DIN HV Distribution. DIN HV fuses are partial-range high voltage currentlimiting fuses for use in distribution circuits from kV.

DIN HV Distribution DIN HV fuses are partial-range high voltage currentlimiting fuses for use in distribution circuits from 2.3-38kV. Their compact dimensions and non-venting characteristics make them ideal for restricted enclosures. DIN HV fuses have excellent short circuit performance and good low overcurrent clearing capability. When used in combination with fusible switches with fuse-activated trip feature, full range clearing capability is achieved. True full-range fuses are available in certain voltage and amp ranges. Please contact Fusetek for more information. Features! Highly standardised DIN 43 625 dimensions.! Excellent short circuit performance. Ceramic bodies, pure silver elements.! '30' series fuses have temperature sensitive striker to protect against extended overload conditions, or external overheating.! Sealed for indoor or outdoor use.(on Driescher products - use 'F' suffix on part number)! Striker pin can be used for visual indication or to actuate a 'trip all phase' mechanism.! High amp ratings available for larger installations. DRS factory paralleled configurations available.! Fully plated parts for cool running. Installation Notes 1. DIN fuses are partial range devices with a minimum interrupting rating. Care must be taken to ensure that anticipated currents below the fuse's minimum breaking current (m.b.c) are cleared by other devices. In this regard, DIN fuses are similar to ANSI - 'E' rated fuses. Full range DIN fuses are available in limited voltage and amp ranges. Please contact our offices for information. 2. When DIN fuses are used in conjunction with a trip-all-phase-device, the minimum breaking capacity of the switch or contactor must be equal to or greater than the m.b.c of the fuse. 3. Voltage ranges specified are minimum and maximum voltages for safe operation. The normal +/-10% utility tolerance on voltage must be taken into account when selecting a voltage range. 4. When replacing fuses in the field, ensure that contact clips are clean and free of corrosion, dirt, grease etc... Ensure that the fuse clips still have good tension. (if the fuse will spin easily in the fuse clips, the clips have lost their tension and should be replaced) 5. Fuses should be replaced in sets of three to avoid nuisance blowing caused by element damage.

Dimensions All DIN fuse share common end fittings which fit into 45mm fuse clips. The only dimensional variables are the body length (L) and body diameter (D). As this varies depending on voltage, amperage and other factors, please refer to the tables in this section for D and L dimensions. Striker pins meet industry and DIN requirements for force/travel and can be used for mechanical actuation or visual indication. Transformer application The fuse ratings recommended in the following tables have been chosen with the following conditions in mind:! Fuses must pass normal primary winding magnetising inrush currents: These are taken as 12x the normal full load current(flc) at.1 sec, and 25x FLC at.01 sec. Certain applications may require the use of a higher fuse rating. Please contact FUSETEK with application details.! After a sustained power outage, the fuse must be able to withstand an overload of approximately 6 x FLC for 1 sec. and 3 x FLC for 10 sec.! The maximum voltage rating of the fuse must be equal to, or greater than the maximum line-to-line system voltage. Capacitor application Refer to capacitor selection chart on page 44. Be sure to consider the switching options and proximity of other banks when establishing a base FLC to apply. Companion Products Insulators, clips, single pole bases - page 47-48. For information on our range of load break switches, see the loadbreak section on page 33. peak curent (A) x 1000 100 10 1 Current cut-off characteristics (all voltage classes) 500 400 355 315 250 200 160 125 100 80 63 50 40 32 25 20 16 10 6.3 Note: I 2 t and interrupting ratings shown in following tables are at maximum system voltage. 0.1 0.1 1 10 100 Prospective Short Circuit - rms Amps x 1000 pg 20

3.0/7.2kV Time in seconds 1000 100 10 1 0.1 0.01 Melting Time Current Characteristics 6.3 16 25 40 63 100 160 250 355 500 10 20 31.5 50 80 125 200 315 400 10 100 1000 10000 100000 RMS Amperes Part Number General Specifications A D x L (mm) I.R ka mbc A total I2t x 1000 6.3 25 0.37 10 40 0.57 16 56 2.0 30 098 13 20 53 292 63kA 70 4.9 25 rms 90 7.8 31.5 110 10.3 40 0 19.5 50 170 34 63 210 69 30 099 13 80 67 292 63kA 280 5 100 rms 320 210 125 390 399 30 100 13 160 85 292 40kA 600 580 200 800 740 30 100 250 85 292 40kA 1000 1200 315 rms 1260 1800 355 20 2300 30 110 400 85 442 40kA 1600 2900 500 rms 2000 4800 Other body lengths and configurations available. Please contact Fusetek. Minimum fuse for transformers rated 7.2kV or less kva 2.4kV 4.16kV 4.8kV 6.9kV Dimensions (mm) 15 10A 6.3A 6.3A 6.3A 30 16A 16A 10A 10A 45 25A 16A 16A 16A 75 40A 25A 20A 16A 112.5 50A 40A 25A 20A 150 50A 40A 31.5A 25A 225 80A 50A 50A 40A 300 100A 63A 50A 40A 500 160A 100A 80A 63A 750 250A 125A 100A 80A 1000 315A 160A 160A 100A 1500 500A 250A 250A 160A 2000-355A 315A 200A 2500-500A 400A 250A 3000 - - 500A 315A 4000 - - - 400A

6/12kV Time in seconds 1000 100 10 1 0.1 0.01 Melting Time Current Characteristics 6.3 16 25 40 63 100 160 250 10 20 31.5 50 80 125 200 315 10 100 1000 10000 RMS Amperes Part Number General Specifications A D x L (mm) I.R ka mbc A total I2t x 1000 6.3 25 0.37 10 40 0.57 16 56 2.0 30 004 13 20 53 292 63kA 70 4.9 25 rms 90 7.8 31.5 110 10.3 40 0 19.5 50 170 34 63 210 69 30 012 13 80 67 292 63kA 280 5 100 rm 320 210 125 390 399 30 020 13 160 85 292 63kA 600 580 30 020 200 85 292 800 740 40kA 30 211 250 85 537 1000 1100 rms 30 211 315 85 537 1260 1800 Other body lengths and configurations available. Please contact Fusetek. Minimum fuse for transformers rated 12kV or less kva 6.9kV 7.2kV 8.3kV 12kV Dimensions (mm) 15 6.3A 6.3A 6.3A 6.3A 30 10A 6.3A 6.3A 6.3A 45 16A 16A 10A 6.3A 75 16A 16A 16A 10A 112.5 20A 20A 20A 16A 150 25A 25A 25A 16A 225 40A 31.5A 31.5A 20A 300 40A 40A 40A 25A 500 63A 63A 63A 40A 750 80A 80A 80A 50A 1000 100A 100A 100A 63A 1500 160A 160A 125A 100A 2000 200A 200A 160A 125A 2500 250A 250A 250A 160A 3000 315A 315A 315A 200A 4000 see 7.2kV class - 250A

10/17.5kV Time in seconds 1000 100 10 1 0.1 Melting Time Current Characteristics 6.3 16 25 40 63 100 160 250 400 10 20 32 50 80 125 200 315 0.01 10 100 1000 10000 100000 RMS Amperes Part Number General Specifications A D x L (mm) I.R ka mbc A total I2t x 1000 6.3 25 0.37 10 40 0.57 16 56 2.0 30 231 13 20 53 442 63kA 70 4.9 rms 25 90 7.8 31.5 110 10.3 40 0 19.5 50 170 34 30 232 13 63 67 442 63kA 210 69 rms 80 280 5 30 233 13 100 85 442 63kA 320 210 125 rms 390 399 DRS15/160B4 160 85 40kA 480 300 442 DRS15/200B4 200 85 20kA 800 590 DRS15/250B8 250 442 40kA 375 1000 2x DRS15/315B8 315 442 rms 480 2000 85 DRS15/400B8 400 442 20kA 800 4000 Other body lengths and configurations available. Please contact Fusetek. Minimum fuse for transformers rated 17.5kV or less kva 12.47kV 13.2kV 13.8kV.4kV Dimensions (mm) 45 6.3A 6.3A 6.3A 6.3A 75 10A 10A 10A 6.3A 112.5 16A 16A 16A 10A 150 16A 16A 16A 16A 225 20A 20A 20A 20A 300 25A 20A 20A 20A 500 40A 40A 31.5A 31.5A 750 50A 50A 50A 50A 1000 63A 63A 63A 63A 1500 100A 100A 80A 80A 2000 125A 125A 100A 100A 2500 160A 125A 125A 125A 3000 200A 200A 200A 200A 4000 250A 250A 250A 250A 5000 315A 315A 315A 315A 6000 400A 400A 400A 315A 7000 400A 400A 400A 400A

20/27.6kV Time in seconds Melting Time Current Characteristics 1000 100 10 1 Part Number General Specifications A D x L (mm) I.R ka mbc A total I2t x 1000 30 289 13 6.3 53 442 63kA 25.26 30 289 13 10 53 442 63kA 40.56 30 289 13 16 53 442 63kA 56 2.0 20 70 5.0 25 90 7.8 30 288 13 31.5 63kA 110 12.0 53 442 40 rms 0 20.0 50 170 33.5 63 210 69 30 287 13 80 63kA 280 5 67 442 100 rms 320 210 0.1 6.3 16 25 40 63 100 10 20 31.5 50 80 0.01 10 100 1000 10000 RMS Amperes Other body lengths and configurations available. Please contact Fusetek. Fuse selection for transformers rated 25.8kV or less kva 17kV 23kV 24kV 25.8kV Dimensions (mm) 112.5 10A 10A 10A 10A 150 16A 10A 10A 10A 225 20A 16A 16A 16A 300 20A 16A 16A 16A 500 25A 20A 20A 20A 750 40A 31.5A 31.5A 25A 1000 50A 40A 40A 40A 1500 80A 63A 63A 50A 2000 100A 80A 80A 63A 2500 80A 80A 80A 3000 100A 100A 80A

30/36kV Time in seconds 1000 100 10 1 0.1 Melting Time Current Characteristics 6.3 16 25 40 63 100 160 250 10 20 31.5 50 80 125 200 315 0.01 10 100 1000 10000 RMS Amperes Part Number General Specifications A D x L (mm) I.R ka mbc A total I2t x 1000 6.3 25 0.37 10 40 0.57 30 008 13 16 53 537 40kA 56 2.0 rms 20 70 4.9 25 90 7.8 30 016 13 31.5 67 537 40kA 110 10.3 40 rms 0 19.5 30 024 13 50 85 537 40kA 170 34 63 rms 210 69 DRS30/75B5 75 85 537 20ka 225 38 DRS30/100B5 100 rms 300 88 DRS30/125A9 125 2x 66 537 16kA 158 0 DRS30/150B9 150 2 x 537 20kA 225 200 DRS30/200B9 200 85 rms 300 580 DRX30/250B9 250 2 x DRX30/315B9 315 85 537 Contact Fusetek Other body lengths and configurations available. Please contact Fusetek. DRS/DRX fuses are rated 38kV max. Fuse selection for transformers rated 36kV or less kva 25.8kV 27.6kV 34.5kV 36kV Dimensions (mm) 112.5 10A 6.3 6.3A 6.3A 150 10A 10A 10A 6.3A 225 16A 16A 10A 10A 300 16A 16A 16A 16A 500 20A 20A 16A 16A 750 25A 25A 20A 20A 1000 40A 31.5A 25A 25A 1500 50A 50A 40A 40A 2000 63A 63A 50A 50A 2500 80A 75A 63A 63A 3000 80A 100A 75A 75A 4000 160A 125A 100A 100A 5000 200A 160A 125A 125A 6000 200A 200A 160A 160A 7000 250A 200A 200A 200A 10000 315A 315A 250A 250A

E Rated Distribution fuses FC series power fuses are current limiting partial-range fuses usually used for fusing the primary windings of medium voltage distribution transformers and associated distribution circuits. Their high degree of current limitation greatly reduces the thermal and mechanical stresses imposed on system components during a short circuit. They can be used indoors or outdoors in a suitable enclosure and conform to standard N.American dimensions. E Rating Defined Features! General purpose 'E' rated characteristics.! Pure silver elements! Fully plated metal parts for cool running.! Excellent current limitation for substantial reduction of short circuit stresses.! Blown fuse indicator pin for visual indication or mechanical actua tion (except 2" body)! All D case (3" diam.) fuses can be supplied hermetically sealed and without indicator for use in Hazardous location applications. 100E or less: Fuse must open in 300sec at 200-240% of its rated current over 100E: Fuse must open in 600sec. at 220-264% of its rated current. Thus, fuses with identical E ratings will provide similar overload protection and coordination with transformer and other protective devices. Companion Products Standoff insulators, fuse clips and bases. Please see accessories section in rear of this section. For other ratings and designs, please contact Fusetek. Retrofitting Fusetek power fuses are dimensionally compatible with and interchangeable with other manufacturers' fuses having the same dimensions and ratings. Standard 'E' rated characteristics ensure electrical equivalency. Fuses should be replaced in sets of three to avoid nuiscance blowing caused by element damage. Tag Variations 3" diameter E rated fuses are available with the following options. Add the suffixes shown to the end of the part number - example; X Bi - - 2" longer tube to line up with some manufacturers' longer bodies. Offset mounting brackets for bolt mounting. W CL - - Hookeye disconnect feature. ITE/Gould style clip-lock mounting. See page 17 for drawing details of these options. pg 34

2" Format (B diam.) - General Specifications Vac Dimensions I.R Part Number Ratings available Type L CC Fig. rms sym. 2.5/2.7kV 9.2 7.0 FC468 1, 2, 3, 5, 7, 10, 15, 20, 25A 50kA 11.2 10.0 FC469 1, 2, 3, 5, 7, 10, 15, 20, 25A 50kA 4.8/5.5kV.2 13.0 FC471 1, 2, 3, 5, 7, 10, 15, 20, 25A 50kA B 1 7.2/8.3kV.2 13.0 FC472 1, 2, 3, 5, 7, 10, 15A 50kA 13.8/15.5kV 17.2 16.0 FC473 1, 2, 3, 5, 7, 10, 15, 20, 25A 40kA 23/25.8kV 22.5 21.0 FC474 1, 3, 5, 7,10A 32kA 3" Format (D diam.) Dimensions I.R Ratings available Vac Type L CC Fig. Part Number rms sym. 2.4/2.75 4.8/5.5 7.2/8.3 13.8/15.5 23/25.8 30/38kV D 1 ***E-1C-2.75 10.8 7.0 DD 2 ***-2C-2.75 15.8 12.0 ***-1C-5.5 D 1 17.8.0 5NLE-*** D-ITE 4 ***-1CL-5.5 15.8 12.0 DD 2 17.8.0 5NLE2-*** D DD 10, 15, 20, 25, 30, 40, 50, 65, 80, 100, 125, 150, 175, 200E 125, 150, 175, 200, 225, 250, 300, 350, 400, 450E 10, 15, 20, 25, 30, 40, 50, 65, 80, 100, 125, 150, 175, 200E ***-2C-5.5 150, 200, 225, 250, 300, 350, 400, 450E 15.8 12.0 ***-1C-8.3 10, 15, 20, 25, 30, 40, 50, 65, 80, 1 17.8.0 8NLE-*** 100E 15.8 12.0 ***-2C-8.3 2 17.8.0 8NLE2-*** 18.8 15.0 ***-1C-15.5 D 21.8 18.0 1 15GSE-*** 23.8 20.0 15NLE-*** D-ITE 3 ***-1CL-15.5 18.8 15.0 ***-2C-15.5 DD 21.8 18.0 2 15GSE2-*** 23.8 20.0 15NLE-*** 125, 150, 175 200, 250, 300E 10, 15, 20, 25, 30, 40, 50, 65, 80, 100E 65, 80, 100, 125, 150, 175, 200E D 1 ***-1C-25.8 15, 20, 25, 30, 40, 50E 22.5 20.0 DD 2 ***-2C-25.8 65, 80, 100E D 1 ***-1C-38 15, 20, 25, 30, 40E 30.8 27.0 DD 2 ***-2C-38 50, 65, 80E 50kA 50kA 50kA 40kA 40kA 20kA pg 35

E rated fuse Application E rated fuses are used to isolate the voltage transformer from the supply in the event of a primary winding failure. Properly selected fuses will also operate quickly if there is a short circuit on the secondary side of the transformer. To provide optimum protection without nuisance blowing, it is necessary to consider the following points:! The interrupting rating must be equal to or greater than the largest anticipated short circuit.! The fuse must pass the magnetising inrush to the primary windings without damage or operation. This inrush is normally considered to be 12 times the primary FLC for 0.1 second.! The fuse's voltage rating must be equal to, or greater than the system voltage. 3 phase FLC = kva x 1000 Single phase FLC = kva x 1000 vac x 1.73 vac all 2" (B) Format Transformer Application Table Transformer Primary FLC (A) from to Fuse rating (A) 0 0.30 1 0.31 0.62 2 0.63 1.0 3 1.1 1.5 5 1.6 2.5 7 2.6 4.8 10 4.9 7.5 15 7.6 11.2 20 11.3 15.0 25 Time in seconds 1000 100 10 1 0.1 Melting Time current Characteristics 1 2 3 5 7 10 15 20 25 0.01 1 10 100 1000 RMS Amperes pg 36

5.5kV - 3" Body 'E' rated Distribution fuses Time in seconds 1000 100 10 1 0.1 0.01 Melting Time Current Characteristics 10 20 30 50 80 125 200 300 400 15 25 40 65 100 150 250 350 10 100 1000 10000 100000 RMS Amperes Part Number General Specifications A D x L (mm) I.R ka mbc A 10 20 15 30 20 40 25 50 30 60 40 XXXE-1C-5.5 3 15.8 50kA 80 50 100 rms 65 130 80 160 100 200 125 250 150 300 200 400 250 500 XXXE-2C-5.5 300 2x3 15.8 50kA 600 400 rms 800 450 900 To complete part number, replace XXX with amp rating Fuse selection for transformers rated 5.5kV or less kva 2.4kV 4.16kV 4.8kV 5.5kV Dimensions (in.) 15 10E - - - 30 15E 15E 10E 10E 45 20E 15E 15E 15E 75 30E 20E 15E 15E 112.5 40E 25E 20E 20E Fig. 1 - D 150 65E 30E 30E 25E 225 80E 50E 40E 40E 300 100E 65E 65E 50E 500 125E 100E 100E 80E Fig. 2 - DD 750 250E 125E 100E 100E 1000 300E 200E 125E 125E 1500 450E 250E 250E 200E 2000-350E 300E 250E 2500-450E 350E 350E 3000 - - 450E 400E pg 37

8.3kV - 3" Body 'E' rated Distribution fuses Time in seconds 1000 Melting Time Current Characteristics Part Number General Specifications A D x L (inch) I.R ka mbc A total I2t x1000 10 22.5.25 100 15 35.40 20 50.65 25 60.90 **E-1C-8.25 30 70 1.3 10 3 40 90 2.0 50 125 3.0 65 150 4.0 1 80 15.8 50 190 6.0 100 240 8.5 125 300 12.5 0.1 10 15 25 40 65 100 150 250 350 20 30 50 80 125 200 300 400 150 360 18.0 **E-2C-8.3 200 2x3 480 28.0 250 600 37.0 0.01 300 720 50.0 10 100 1000 10000 100000 350 840 65.0 **E-3C-8.3 3x3 RMS Amperes 400 960 80.0 ** - add amp rating to complete part number Fuse selection for transformers rated 8.3kV or less kva 5.5kV 6.9kV 7.2kV 8.3kV Dimensions (in.) 45 10E 10E 10E - 75 15E 15E 15E - 112.5 20E 15E 15E 10E 150 25E 20E 20E 15E 225 40E 30E 30E 20E 300 40E 40E 40E 30E 500 80E 65E 65E 50E 750 100E 100E 100E 80E 1000 150E 125E 100E 100E 1500 250E 125E 150E 150E 2000 300E 200E 200E 200E 2500 350E 300E 250E 250E 3000 400E 350E 350E 300E 3500-350E 350E 350E 4000 - - 400E 350E Fig.1 - D Fig. 2 - DD pg 38

15.5kV - 3" Body 'E' rated Distribution fuses Time in seconds 1000 100 10 1 0.1 0.01 Melting Time Current Characteristics 10 15 20 30 50 80 125 200 300 25 40 65 100 150 250 10 100 1000 10000 RMS Amperes Part Number **E-1C-15.5 **E-2C-15.5 **E-3C-15.5 General Specifications A D x L (mm) I.R ka mbc A total I2t x1000 10 22.5 1.9 15 34 3.2 20 45 4.7 25 56 6.5 30 68 8 3 40 90 13 50 113 16 65 18.8 32kA 6 23 80 180 30 100 225 41 125 280 58 150 2x3 338 75 200 450 115 250 562 9 3x3 300 675 199 insert amp rating for ** in above part numbers to complete Fuse selection for transformers rated 15.5kV or less kva 12.47kV 13.2kV 13.8kV.4kV Dimensions (in.) 112.5 15E 15E 15E 10E 150 15E 15E 15E 15E 225 25E 20E 20E 20E 300 30E 30E 30E 30E Fig. 1 - D 500 50E 50E 50E 50E 750 80E 80E 80E 65E 1000 100E 100E 100E 80E 1500 125E 125E 125E 125E 2000 150E 150E 150E 150E 2500 200E 150E 150E 150E Fig. 2 - DD 3000 200E 200E 200E 200E pg 39

HV DIN fuse bases DRIWISA fuse bases are available in single or 3 pole versions in 630 or 1250A (dual clip) versions. Supported voltages are 7.2, 17.5, 25.8 and 38kV. Base is heavy duty galvanised steel with epoxy resin standoff insulators. 630A silver plated clips are standard. 3 pole versions can be fitted with auxilliary microswitches for remote blown-fuse annunciation. Note: these bases can be modified to accept North American E rated fuses. Please contact Fusetek for details. Part numbers for 630A single & 3 pole DIN fuse bases Fuse body length (BL) Vac No. Poles BL=192mm BL=292mm BL=442mm BL=537mm 7.2kV 17.5kV 25.8kV 38kV 1 SP07/061AMN SP07/062AMN SP07/064AMN SP07/065AMN 3 DSP07/061AMN DSP07/062AMN DSP07/064AMN DSP07/065AMN 1 - SP15/062AMN SP15/064AMN SP15/065AMN 3 - DSP15/062AMN DSP15/064AMN DSP15/065AMN 1 - - SP20/064AMN SP20/065AMN 3 - - DSP20/064AMN DSP20/065AMN 1 - - - SP30/065AMN 3 - - - DSP30/065AMN Specifications MAXIMUM RATED BASIC IMPULSE LEVEL WITHSTAND VOLTAGE VOLTAGE CURRENT (BIL) 1.2 x 50 s 60 hz 1 min DRY SERIE Up Ud kv A kv kv TO GROUND ACROSS TO GROUND ACROSS Ur Ir AND BETWEEN OPEN AND BETWEEN OPEN POLES GAP POLES GAP 07 7.2 630 60 70 20 23 15 17.5 630 95 110 38 45 20 25.8 630 125 0 60 66 30 38 630 150 165 80 88 pg 32

FUSES HHD HIGH VOLTAGE FUSES GERMAN DIN STANDARD FOR AIR & GAS INSULATED SWITCHGEARS OUTDOOR SWITCHGEARS The striker pin system is connected by means of a high resistance parallel conductor. After melting the main fuse elements the striker pin will indicate the operation status of the fuse and open a load break switch or actuate a microswitch for remote indication. Design and construction SIBA HV Fuse-links have parallel connected pure silver fuse-elements. The design and method of production of the elements ensures narrow tolerances of time-currentcharacteristics. The fuse elements are wound on a ceramic support and are attached to the silver plated connection caps by means of spot-welding. The connection caps are fitted inside the silver plated copper end caps by spot welding. The copper end caps themselves are press-fitted onto the porcelain tube which is glazed inside and outside. The end caps are furthermore mechanically fixed to the porcelain tube and additionally sealed by a durable elastic sealing medium. This sealing method has been proven over many decades of positive field experience and ensures tightness against ingress of humidity. Striker pin SIBA HV Fuse-links are available with striker pins of the force: 80 N (Part No. 30 13 for basic-type) and 120 N (Part No. 30 for variant-type) The characteristics of both striker pins corresponds to IEC 60282-1, VDE 0670 Part 4 and are of the energycategory medium. The temperature limiting function of the fuse striker pin SIBA HV Fuse-links up to and including 160 A with a striker pin of 80 N are equipped with an integrated temperature limiter as standard. The temperature limiter is fitted inside the striker pin system. The SIBA striker pin system therefore has the following functions: thermal protection of adjacent equipment, especially SF6 Insulated switchgear limitation of failure current at the overload region improved properties for the switch-fuse combinations according IEC 60420 The integrated temperature limiter avoids inadmissible high temperatures no matter for whatever reason they are generated in gas-insulated switchgear or narrow switchgear enclosures. By means of a melting activator temperatures inside the fuse link enclosure are limited to below approx. 100 C. This design especially considers continuity of current supply for the end user for as long as possible. The system reacts in such a way that short time overloads do not cause the fuse to interrupt the circuit unnecessarily. Only when inadmissible values are exceedes the fuse will open the switch via the striker pin. Higher temperatures on plastic fuse enclosures in SF6- insulated switchgear can be caused by: selection of a fuse rating too low for transformer protection fuses are loaded with fault currents below the minimum operating current deterioration of fuse links caused by transient fault currents (e.g. lightning strike) transformer faults currents (e.g. winding short-current) overloading of the fuse when loaded with currents as described in IEC 420 Test Duty 3 additional temperatures rise because of poor clip fitting Fuse-links with integrated temperature limiter are compatible with standard Fuse links. All coordination schedules can be used. Further information on our temperature limiter, design, construction, can be obtained from our website. HHD 1

HHD FUSES HIGH VOLTAGE FUSES GERMAN DIN STANDARD FOR AIR & GAS INSULATED SWITCHGEARS OUTDOOR SWITCHGEARS Selection Guide Rated Voltage DIN Size Class Part No. Selection Techn. AC E Guide Data kv mm Page Page 3/7.2 192 Back up 30 002 13 HHD 5 HHD 23 3/7.2 192 Back up 30 010 13 HHD 5 HHD 23 3/7.2 192 Back up 30 018 13 HHD 5 HHD 23 3/7.2 192 Back up 30 018 HHD 5 HHD 23 3/7.2 292 Back up 30 098 13 HHD 6 HHD 23 3/7.2 292 Back up 30 099 13 HHD 6 HHD 23 3/7.2 292 Back up 30 100 13 HHD 6 HHD 23 3/7.2 292 Back up 30 100 HHD 6 HHD 23 3/7.2 442 Back up 30 109 13 HHD 7 HHD 24 3/7.2 442 Back up 30 110 13 HHD 7 HHD 24 3/7.2 442 Back up 30 110 HHD 7 HHD 24 6/12 192 Back up 30 119 13 HHD 8 HHD 25 6/12 192 Back up 30 267 13 HHD 8 HHD 25 6/12 292 Back up 30 004 13 HHD 9 HHD 25 6/12 292 Back up 30 012 13 HHD 9 HHD 25 6/12 292 Back up 30 020 13 HHD 9 HHD 25 6/12 292 Back up 30 020 HHD 9 HHD 25 6/12 442 Back up 30 101 13 HHD 10 HHD 26 6/12 442 Back up 30 102 13 HHD 10 HHD 26 6/12 442 Back up 30 103 13 HHD 10 HHD 26 6/12 442 Back up 30 103 HHD 10 HHD 26 6/12 537 Back up 30 211 13 HHD 11 HHD 26 6/12 537 Back up 30 211 HHD 11 HHD 26 10/17.5 292 Back up 30 255 13 HHD 12 HHD 27 10/17.5 292 Back up 30 221 13 HHD 12 HHD 27 10/17.5 292 Back up 30 222 13 HHD 12 HHD 27 10/17.5 367 Back up 30 176 13 HHD 13 HHD 27 10/17.5 367 Back up 30 177 13 HHD 13 HHD 27 10/17.5 367 Back up 30 178 13 HHD 13 HHD 27 10/17.5 367 Back up 30 178 HHD 13 HHD 27 10/17.5 442 Back up 30 231 13 HHD HHD 28 10/17.5 442 Back up 30 232 13 HHD HHD 28 10/17.5 442 Back up 30 233 13 HHD HHD 28 HHD 2

FUSES HHD HIGH VOLTAGE FUSES GERMAN DIN STANDARD FOR AIR & GAS INSULATED SWITCHGEARS OUTDOOR SWITCHGEARS Selection Guide Rated Voltage DIN Size Class Part No. Selection Techn. AC E Guide Data kv mm Page Page 10/24 292 Back up 30 180 13 HHD 15 HHD 29 10/24 292 Back up 30 225 13 HHD 15 HHD 29 10/24 442 Back up 30 006 13 HHD 16 HHD 29 10/24 442 Back up 30 0 13 HHD 16 HHD 29 10/24 442 Back up 30 022 13 HHD 16 HHD 29 10/24 537 Back up 30 203 13 HHD 17 HHD 30 10/24 537 Back up 30 204 13 HHD 17 HHD 30 10/24 537 Back up 30 196 13 HHD 17 HHD 30 10/24 537 Back up 30 196 HHD 17 HHD 30 20/36 442 Back up 30 181 13 HHD 18 HHD 31 20/36 537 Back up 30 008 13 HHD 19 HHD 31 20/36 537 Back up 30 016 13 HHD 19 HHD 31 20/36 537 Back up 30 024 13 HHD 19 HHD 31 6/12 292 General purpose 30 004 93 HHD 21 HHD 32 6/12 292 General purpose 30 012 93 HHD 21 HHD 32 6/12 292 General purpose 30 020 93 HHD 21 HHD 32 10/24 442 General purpose 30 006 93 HHD 22 HHD 32 10/24 442 General purpose 30 0 93 HHD 22 HHD 32 10/24 442 General purpose 30 022 93 HHD 22 HHD 32 Selection Guide Fuse-bases Article Rated Voltage DIN-Size Part No. Techn. AC E Data kv mm Page Indoor Fuse-bases 7.2 192 31 001 02 HHD 40 12 292 31 003 02 HHD 40 24 442 31 005 02 HHD 40 36 537 31 007 02 HHD 40 24 292 31 221 01 HHD 40 Outdoor Fuse-bases 7.2 192 31 002 01 HHD 41 12 292 31 004 01 HHD 41 24 292 31 006 01 HHD 41 36 537 31 008 01 HHD 41 HHD 3

HHD FUSES HIGH VOLTAGE FUSES GERMAN DIN STANDARD FOR AIR & GAS INSULATED SWITCHGEARS OUTDOOR SWITCHGEARS Selection Guide Microswitch fitting consists of Article Length Part No. Techn. mm Data Page Microswitch 660 31 001 10 HHD 42 900 31 001 HHD 42 Fuse Clip 34 002 01 HHD 43 Distance Plate 31 002 01.3 HHD 43 Selection Guide Accessories Article Rated Part No. Techn. Voltage Data kv Page Extension Adapter 12/24 34 006 01 HHD 44 Test Fuse-link for gas 24 33 010 03 HHD 45 insulated switchgear Contact Clip 200 A 31 003 02.20 HHD 46 indoor and outdoor Contact Clip 34 001 01.20 HHD 46 heavy duty Storage Holder 12 33 004 01 HHD 47 24 33 006 01 HHD 47 36 33 008 01 HHD 47 HHD 4

FUSES HHD HIGH VOLTAGE FUSES GERMAN DIN STANDARD FOR AIR & GAS INSULATED SWITCHGEARS OUTDOOR SWITCHGEARS DIN Size Rated voltage Class Standard E=192 mm AC 3/7.2 kv Back up DIN 43625 IEC 60282-1 Rated Part No. D= Diameter Rated breaking Weight Pack current inch mm current (kg/1) ka 6.3 A 30 002 13 2.10 53 63 1.2 1 10 A 30 002 13 2.10 53 63 1.2 1 16 A 30 002 13 2.10 53 63 1.2 1 20 A 30 002 13 2.10 53 63 1.2 1 25 A 30 002 13 2.10 53 63 1.2 1 31.5 A 30 002 13 2.10 53 63 1.2 1 40 A 30 002 13 2.10 53 63 1.2 1 50 A 30 002 13 2.10 53 63 1.2 1 63 A 30 010 13 2.64 67 63 1.5 1 80 A 30 010 13 2.64 67 63 1.5 1 100 A 30 010 13 2.64 67 63 1.5 1 125 A 30 010 13 2.64 67 63 1.5 1 160 A 30 018 13 3.35 85 63 2.9 1 200 A 30 018 3.35 85 50 2.9 1 250 A 30 018 3.35 85 50 2.9 1 Prefered Standard size 3/7.2 kv A 1.77 (45 mm) F 1.30 (33 mm) O 0.40 (10 mm) N 1.38 (35 mm) HHD 5

HHD FUSES HIGH VOLTAGE FUSES GERMAN DIN STANDARD FOR AIR & GAS INSULATED SWITCHGEARS OUTDOOR SWITCHGEARS DIN Size Rated voltage Class Standard E= 292 mm AC 3/7.2 kv Back up DIN 43625 IEC 60282-1 Rated Part No. D= Diameter Rated breaking Weight Pack current inch mm current (kg/1) ka 6.3 A 30 098 13 2.10 53 63 1.6 1 10 A 30 098 13 2.10 53 63 1.6 1 16 A 30 098 13 2.10 53 63 1.6 1 20 A 30 098 13 2.10 53 63 1.6 1 25 A 30 098 13 2.10 53 63 1.6 1 31.5 A 30 098 13 2.10 53 63 1.6 1 40 A 30 098 13 2.10 53 63 1.6 1 50 A 30 098 13 2.10 53 63 1.6 1 63 A 30 099 13 2.64 67 63 2.0 1 80 A 30 099 13 2.64 67 63 2.0 1 100 A 30 099 13 2.64 67 63 2.0 1 125 A 30 099 13 2.64 67 63 2.0 1 160 A 30 100 13 3.35 85 50 3.8 1 200 A 30 100 3.35 85 50 3.8 1 250 A 30 100 3.35 85 50 3.8 1 315 A 30 100 3.35 85 50 3.8 1 355 A 30 100 3.35 85 50 3.8 1 A 1.77 (45 mm) F 1.30 (33 mm) O 0.40 (10 mm) N 1.38 (35 mm) HHD 6

FUSES HHD HIGH VOLTAGE FUSES GERMAN DIN STANDARD FOR AIR & GAS INSULATED SWITCHGEARS OUTDOOR SWITCHGEARS DIN Size Rated voltage Class Standard E= 442 mm AC 3/7.2 kv Back up DIN 43625 IEC 60282-1 Rated Part No. D= Diameter Rated breaking Weight Pack current inch mm current (kg/1) ka 100 A 30 109 13 2.64 67 63 2.9 1 125 A 30 109 13 2.64 67 63 2.9 1 160 A 30 110 13 3.35 85 63 5.4 1 200 A 30 110 3.35 85 50 5.4 1 250 A 30 110 3.35 85 50 5.4 1 315 A 30 110 3.35 85 50 5.4 1 355 A 30 110 3.35 85 50 5.4 1 400 A 30 110 3.35 85 50 5.4 1 500 A 30 110 3.35 85 50 5.4 1 A F O N 1.77 (45 mm) 1.30 (33 mm) 0.40 (10 mm) 1.38 (35 mm) HHD 7

HHD FUSES HIGH VOLTAGE FUSES GERMAN DIN STANDARD FOR AIR & GAS INSULATED SWITCHGEARS OUTDOOR SWITCHGEARS DIN Size Rated voltage Class Standard E= 192 mm AC 6/12 kv Back up DIN 43625 IEC 60282-1 Rated Part No. D= Diameter Rated breaking Weight Pack current inch mm current (kg/1) ka 6.3 A 30 119 13 2.10 53 63 1.2 1 10 A 30 119 13 2.10 53 63 1.2 1 16 A 30 119 13 2.10 53 63 1.2 1 20 A 30 267 13 2.64 67 63 1.5 1 25 A 30 267 13 2.64 67 63 1.5 1 31.5 A 30 267 13 2.64 67 63 1.5 1 40 A 30 267 13 2.64 67 63 1.5 1 50 A 30 267 13 2.64 67 63 1.5 1 63 A 30 267 13 2.64 67 63 1.5 1 A F O N 1.77 (45 mm) 1.30 (33 mm) 0.40 (10 mm) 1.38 (35 mm) HHD 8

FUSES HHD HIGH VOLTAGE FUSES GERMAN DIN STANDARD FOR AIR & GAS INSULATED SWITCHGEARS OUTDOOR SWITCHGEARS DIN Size Rated voltage Class Standard E= 292 mm AC 6/12 kv Back up DIN 43625 IEC 60282-1 Rated Part No. D= Diameter Rated breaking Weight Pack current inch mm current (kg/1) ka 6.3 A 30 004 13 2.10 53 63 1.6 1 10 A 30 004 13 2.10 53 63 1.6 1 16 A 30 004 13 2.10 53 63 1.6 1 20 A 30 004 13 2.10 53 63 1.6 1 25 A 30 004 13 2.10 53 63 1.6 1 31.5 A 30 004 13 2.10 53 63 1.6 1 40 A 30 004 13 2.10 53 63 1.6 1 50 A 30 004 13 2.10 53 63 1.6 1 63 A 30 012 13 2.64 67 63 2.0 1 80 A 30 012 13 2.64 67 63 2.0 1 100 A 30 012 13 2.64 67 63 2.0 1 125 A 30 012 13 2.64 67 63 2.0 1 160 A 30 020 13 3.35 85 63 3.8 1 200 A 30 020 3.35 85 50 3.8 1 Prefered Standard size 6/12 kv A F O N 1.77 (45 mm) 1.30 (33 mm) 0.40 (10 mm) 1.38 (35 mm) HHD 9

HHD FUSES HIGH VOLTAGE FUSES GERMAN DIN STANDARD FOR AIR & GAS INSULATED SWITCHGEARS OUTDOOR SWITCHGEARS DIN Size Rated voltage Class Standard E= 442 mm AC 6/12 kv Back up DIN 43625 IEC 60282-1 Rated Part No. D= Diameter Rated breaking Weight Pack current inch mm current (kg/1) ka 6.3 A 30 101 13 2.10 53 63 2.2 1 10 A 30 101 13 2.10 53 63 2.2 1 16 A 30 101 13 2.10 53 63 2.2 1 20 A 30 101 13 2.10 53 63 2.2 1 25 A 30 101 13 2.10 53 63 2.2 1 31.5 A 30 101 13 2.10 53 63 2.2 1 40 A 30 101 13 2.10 53 63 2.2 1 50 A 30 101 13 2.10 53 63 2.2 1 63 A 30 102 13 2.64 67 63 2.9 1 80 A 30 102 13 2.64 67 63 2.9 1 100 A 30 102 13 2.64 67 63 2.9 1 125 A 30 102 13 2.64 67 63 2.9 1 160 A 30 103 13 3.35 85 63 5.4 1 200 A 30 103 3.35 85 50 5.4 1 250 A 30 103 3.35 85 50 5.4 1 A 1.77 (45 mm) F 1.30 (33 mm) O 0.40 (10 mm) N 1.38 (35 mm) HHD 10

FUSES HHD HIGH VOLTAGE FUSES GERMAN DIN STANDARD FOR AIR & GAS INSULATED SWITCHGEARS OUTDOOR SWITCHGEARS DIN Size Rated voltage Class Standard E= 537 mm AC 6/12 kv Back up DIN 43625 IEC 60282-1 Rated Part No. D= Diameter Rated breaking Weight Pack current inch mm current (kg/1) ka 100 A 30 211 13 3.35 85 63 6.8 1 125 A 30 211 13 3.35 85 63 6.8 1 160 A 30 211 13 3.35 85 63 6.8 1 200 A 30 211 3.35 85 50 6.8 1 250 A 30 211 3.35 85 50 6.8 1 315 A 30 211 3.35 85 50 6.8 1 A F O N 1.77 (45 mm) 1.30 (33 mm) 0.40 (10 mm) 1.38 (35 mm) HHD 11

HHD FUSES HIGH VOLTAGE FUSES GERMAN DIN STANDARD FOR AIR & GAS INSULATED SWITCHGEARS OUTDOOR SWITCHGEARS DIN Size Rated voltage Class Standard E= 292 mm AC 10/17.5 kv Back up DIN 43625 IEC 60282-1 Rated Part No. D= Diameter Rated breaking Weight Pack current inch mm current (kg/1) ka 6.3 A 30 255 13 2.10 53 63 1.6 1 10 A 30 255 13 2.10 53 63 1.6 1 16 A 30 255 13 2.10 53 63 1.6 1 20 A 30 221 13 2.64 67 63 2.0 1 25 A 30 221 13 2.64 67 63 2.0 1 31.5 A 30 221 13 2.64 67 63 2.0 1 40 A 30 221 13 2.64 67 63 2.0 1 50 A 30 221 13 2.64 67 63 2.0 1 63 A 30 221 13 2.64 67 63 2.0 1 80 A 30 222 13 3.35 85 63 3.8 1 100 A 30 222 13 3.35 85 63 3.8 1 125 A 30 222 13 3.35 85 63 3.8 1 160 A 30 222 13 3.35 85 63 3.8 1 A 1.77 (45 mm) F 1.30 (33 mm) O 0.40 (10 mm) N 1.38 (35 mm) HHD 12

FUSES HHD HIGH VOLTAGE FUSES GERMAN DIN STANDARD FOR AIR & GAS INSULATED SWITCHGEARS OUTDOOR SWITCHGEARS DIN Size Rated voltage Class Standard E= 367 mm AC 10/17.5 kv Back up DIN 43625 IEC 60282-1 Rated Part No. D= Diameter Rated breaking Weight Pack current inch mm current (kg/1) ka 6.3 A 30 176 13 2.10 53 63 2.0 1 10 A 30 176 13 2.10 53 63 2.0 1 16 A 30 176 13 2.10 53 63 2.0 1 20 A 30 176 13 2.10 53 63 2.0 1 25 A 30 176 13 2.10 53 63 2.0 1 31.5 A 30 177 13 2.64 67 63 3.0 1 40 A 30 177 13 2.64 67 63 3.0 1 50 A 30 177 13 2.64 67 63 3.0 1 63 A 30 177 13 2.64 67 63 3.0 1 80 A 30 178 13 3.35 85 63 4.8 1 100 A 30 178 13 3.35 85 63 4.8 1 125 A 30 178 13 3.35 85 63 4.8 1 160 A 30 178 13 3.35 85 63 4.8 1 200 A 30 178 3.35 85 40 4.8 1 A 1.77 (45 mm) F 1.30 (33 mm) O 0.40 (10 mm) N 1.38 (35 mm) HHD 13

HHD FUSES HIGH VOLTAGE FUSES GERMAN DIN STANDARD FOR AIR & GAS INSULATED SWITCHGEARS OUTDOOR SWITCHGEARS DIN Size Rated voltage Class Standard E= 442 mm AC 10/17.5 kv Back up DIN 43625 IEC 60282-1 Rated Part No. D= Diameter Rated breaking Weight Pack current inch mm current (kg/1) ka 6.3 A 30 231 13 2.10 53 63 2.2 1 10 A 30 231 13 2.10 53 63 2.2 1 16 A 30 231 13 2.10 53 63 2.2 1 20 A 30 231 13 2.10 53 63 2.2 1 25 A 30 231 13 2.10 53 63 2.2 1 31.5 A 30 231 13 2.10 53 63 2.2 1 40 A 30 231 13 2.10 53 63 2.2 1 50 A 30 232 13 2.64 67 63 2.9 1 63 A 30 232 13 2.64 67 63 2.9 1 80 A 30 232 13 2.64 67 63 2.9 1 100 A 30 233 13 3.35 85 63 5.4 1 125 A 30 233 13 3.35 85 63 5.4 1 160 A 30 233 13 3.35 85 63 5.4 1 200 A 30 233 3.35 85 40 5.4 1 A F O N 1.77 (45 mm) 1.30 (33 mm) 0.40 (10 mm) 1.38 (35 mm) HHD

FUSES HHD HIGH VOLTAGE FUSES GERMAN DIN STANDARD FOR AIR & GAS INSULATED SWITCHGEARS OUTDOOR SWITCHGEARS DIN Size Rated voltage Class Standard E= 292 mm AC 10/24 kv Back up DIN 43625 IEC 60282-1 Rated Part No. D= Diameter Rated breaking Weight Pack current inch mm current (kg/1) ka 6.3 A 30 180 13 2.10 53 31.5 1.6 1 10 A 30 180 13 2.10 53 31.5 1.6 1 16 A 30 180 13 2.10 53 31.5 1.6 1 20 A 30 225 13 2.64 67 31.5 2.0 1 25 A 30 225 13 2.64 67 31.5 2.0 1 31.5 A 30 225 13 2.64 67 31.5 2.0 1 40 A 30 225 13 2.64 67 31.5 2.0 1 50 A 30 225 13 2.64 67 31.5 2.0 1 63 A 30 225 13 2.64 67 31.5 2.0 1 A F O N 1.77 (45 mm) 1.30 (33 mm) 0.40 (10 mm) 1.38 (35 mm) HHD 15

HHD FUSES HIGH VOLTAGE FUSES GERMAN DIN STANDARD FOR AIR & GAS INSULATED SWITCHGEARS OUTDOOR SWITCHGEARS DIN Size Rated voltage Class Standard E= 442 mm AC 10/24 kv Back up DIN 43625 IEC 60282-1 Rated Part No. D= Diameter Rated breaking Weight Pack current inch mm current (kg/1) ka 6.3 A 30 006 13 2.10 53 63 2.2 1 10 A 30 006 13 2.10 53 63 2.2 1 16 A 30 006 13 2.10 53 63 2.2 1 20 A 30 006 13 2.10 53 63 2.2 1 25 A 30 006 13 2.10 53 63 2.2 1 31.5 A 30 006 13 2.10 53 63 2.2 1 40 A 30 006 13 2.10 53 63 2.2 1 50 A 30 0 13 2.64 67 63 2.9 1 63 A 30 0 13 2.64 67 63 2.9 1 80 A 30 0 13 2.64 67 63 2.9 1 100 A 30 022 13 3.35 85 63 5.4 1 125 A 30 022 13 3.35 85 40 5.4 1 Prefered Standard size 10/24 kv A F O N 1.77 (45 mm) 1.30 (33 mm) 0.40 (10 mm) 1.38 (35 mm) HHD 16

FUSES HHD HIGH VOLTAGE FUSES GERMAN DIN STANDARD FOR AIR & GAS INSULATED SWITCHGEARS OUTDOOR SWITCHGEARS DIN Size Rated voltage Class Standard E= 537 mm AC 10/24 kv Back up DIN 43625 IEC 60282-1 Rated Part No. D= Diameter Rated breaking Weight Pack current inch mm current (kg/1) ka 6.3 A 30 203 13 2.10 53 63 2.8 1 10 A 30 203 13 2.10 53 63 2.8 1 16 A 30 203 13 2.10 53 63 2.8 1 20 A 30 203 13 2.10 53 63 2.8 1 25 A 30 203 13 2.10 53 63 2.8 1 31.5 A 30 203 13 2.10 53 63 2.8 1 40 A 30 203 13 2.10 53 63 2.8 1 50 A 30 204 13 2.64 67 63 3.7 1 63 A 30 204 13 2.64 67 63 3.7 1 80 A 30 204 13 2.64 67 63 3.7 1 100 A 30 196 13 3.35 85 63 6.8 1 125 A 30 196 13 3.35 85 40 6.8 1 160 A 30 196 13 3.35 85 31.5 6.8 1 200 A 30 196 3.35 85 31.5 6.8 1 250 A 30 196 3.35 85 31.5 6.8 1 A F O N 1.77 (45 mm) 1.30 (33 mm) 0.40 (10 mm) 1.38 (35 mm) HHD 17

HHD FUSES HIGH VOLTAGE FUSES GERMAN DIN STANDARD FOR AIR & GAS INSULATED SWITCHGEARS OUTDOOR SWITCHGEARS DIN Size Rated voltage Class Standard E= 442 mm AC 20/36 kv Back up DIN 43625 IEC 60282-1 Rated Part No. D= Diameter Rated breaking Weight Pack current inch mm current (kg/1) ka 6.3 A 30 181 13 2.10 53 20 2.2 1 10 A 30 181 13 2.10 53 20 2.2 1 16 A 30 181 13 2.10 53 20 2.2 1 A F O N 1.77 (45 mm) 1.30 (33 mm) 0.40 (10 mm) 1.38 (35 mm) HHD 18

FUSES HHD HIGH VOLTAGE FUSES GERMAN DIN STANDARD FOR AIR & GAS INSULATED SWITCHGEARS OUTDOOR SWITCHGEARS DIN Size Rated voltage Class Standard E= 537 mm AC 20/36 kv Back up DIN 43625 IEC 60282-1 Rated Part No. D= Diameter Rated breaking Weight Pack current inch mm current (kg/1) ka 6.3 A 30 008 13 2.10 53 40 2.6 1 10 A 30 008 13 2.10 53 40 2.6 1 16 A 30 008 13 2.10 53 40 2.6 1 20 A 30 008 13 2.10 53 40 2.6 1 25 A 30 008 13 2.10 53 40 2.6 1 31.5 A 30 016 13 2.64 67 40 3.5 1 40 A 30 016 13 2.64 67 40 3.5 1 50 A 30 024 13 3.35 85 40 6.0 1 63 A 30 024 13 3.35 85 40 6.0 1 80 A 30 024 13 3.35 85 40 6.0 1 Prefered Standard size 20/36 kv A F O N 1.77 (45 mm) 1.30 (33 mm) 0.40 (10 mm) 1.38 (35 mm) HHD 19

HHD FUSES HIGH VOLTAGE FUSES GERMAN DIN STANDARD GENERAL PURPOSE FOR AIR & GAS INSULATED SWITCHGEARS OUTDOOR SWITCHGEARS According IEC 60 282-1 and VDE 0670 Part 4, a General-Purpose-Fuse interrupts fault currents between the rated breaking current and the current which causes melting within one hour. The protection range of the SIBA- VS-Protector extends this basic demand. The minimum breaking current is about 1.5 times the rated current. In combination with the temperature released striker pin a full range protection is possible. Additional feature is the small powerloss of the VS-Protector. It is up to 40 % smaller than the standard DIN-fuse. VS-Protector for the overload and short-circuit range The dimensions of the VS-Protector are according to DIN 43625. The rated voltages 12 and 24 kv and also the available current ratings allow protection of transformers up to 630 kva. The function of the VS-Protector is comparable to a typical Back up Fuse link. The melting elements of pure silver are wound inside onto a ceramic support. A short section in the center of the fuse is designed as a Heat chamber. Inside this chamber the elements are made of silver-alloy. They generate a certain level of temperature at overloads. As a result the fuses interrupt at low fault-currents without ageing. HHD 20

FUSES HHD HIGH VOLTAGE FUSES GERMAN DIN STANDARD FOR AIR & GAS INSULATED SWITCHGEARS OUTDOOR SWITCHGEARS DIN Size Rated voltage Class Standard E= 292 mm AC 6/12 kv General purpose DIN 43625 IEC 60282-1 Rated Part No. D= Diameter Rated breaking Weight Pack current inch mm current (kg/1) ka 6.3 A 30 004 93 2.10 53 63 1.6 1 8 A 30 012 13 2.64 67 63 2.0 1 10 A 30 012 93 2.64 67 63 2.0 1 16 A 30 012 93 2.64 67 63 2.0 1 20 A 30 012 93 2.64 67 63 2.0 1 25 A 30 012 93 2.64 67 63 2.0 1 31.5 A 30 012 93 2.64 67 63 2.0 1 40 A 30 012 93 2.64 67 63 2.0 1 50 A 30 020 93 3.35 85 63 3.8 1 63 A 30 020 93 3.35 85 63 3.8 1 80 A 30 020 93 3.35 85 63 3.8 1 100 A 30 020 93 3.35 85 63 3.8 1 A F O N 1.77 (45 mm) 1.30 (33 mm) 0.40 (10 mm) 1.38 (35 mm) HHD 21

HHD FUSES HIGH VOLTAGE FUSES GERMAN DIN STANDARD FOR AIR & GAS INSULATED SWITCHGEARS OUTDOOR SWITCHGEARS DIN Size Rated voltage Class Standard E= 442 mm AC 10/24 kv General purpose DIN 43625 IEC 60282-1 Rated Part No. D= Diameter Rated breaking Weight Pack current inch mm current (kg/1) ka 6.3 A 30 006 93 2.10 53 40 2.2 1 10 A 30 0 93 2.64 67 40 2.9 1 16 A 30 0 93 2.64 67 40 2.9 1 20 A 30 0 93 2.64 67 40 2.9 1 25 A 30 0 93 2.64 67 40 2.9 1 31.5 A 30 022 93 3.35 85 40 5.4 1 40 A 30 022 93 3.35 85 40 5.4 1 A F O N 1.77 (45 mm) 1.30 (33 mm) 0.40 (10 mm) 1.38 (35 mm) HHD 22

Electrical Characteristics FUSES HHD DIN Size Rated voltage Class E= 192 mm AC 3/7.2 kv Back up Rated Part No. Rated Minimum Cold Power Pre-arcing Total I 2 t value current breaking breaking resistance loss I 2 t-value @ 3 kv @ 7.2 kv current ka current A mohm W A 2 s A 2 s A 2 s 6.3 A 30 002 13 63 22 178.0 10 45 210 360 10 A 30 002 13 63 34 113.0 17 75 350 560 16 A 30 002 13 63 56 50.0 17 250 1,100 2,000 20 A 30 002 13 63 70 27.0 13 640 2,900 4,800 25 A 30 002 13 63 90 21.0 16 1,050 4,700 7,500 31.5 A 30 002 13 63 110 17.0 21 1,700 6,600 12,000 40 A 30 002 13 63 0 13.0 27 2,900 12,000 19,000 50 A 30 002 13 63 170 9.3 30 5,700 20,000 33,000 63 A 30 010 13 63 210 6.8 38 10,700 40,000 66,000 80 A 30 010 13 63 280 4.8 47 21,000 78,000 0,000 100 A 30 010 13 63 320 3.8 64 33,000 130,000 210,000 125 A 30 010 13 63 390 3.3 98 47,000 1 390,000 160 A 30 018 13 63 600 2.4 124 90,000 330,000 570,000 200 A 30 018 50 800 1.9 6 230,000 4 704,000 250 A 30 018 50 1,000 1.6 210 371,000 750,000 1,101,000 DIN Size Rated voltage Class E= 292 mm AC 3/7.2 kv Back up Rated Part No. Rated Minimum Cold Power Pre-arcing Total I 2 t value current breaking breaking resistance loss I 2 t-value @ 3 kv @ 7.2 kv current ka current A mohm W A 2 s A 2 s A 2 s 6.3 A 30 098 13 63 22 178.0 10 45 210 360 10 A 30 098 13 63 34 113.0 17 75 350 560 16 A 30 098 13 63 56 50.0 17 250 1,100 2,000 20 A 30 098 13 63 70 27.0 13 640 2,900 4,800 25 A 30 098 13 63 90 21.0 16 1,050 4,700 7,500 31.5 A 30 098 13 63 110 17.0 21 1,700 6,600 12,000 40 A 30 098 13 63 0 13.0 27 2,900 12,000 19,000 50 A 30 098 13 63 170 9.3 30 5,700 20,000 33,000 63 A 30 099 13 63 210 6.8 38 10,700 40,000 66,000 80 A 30 099 13 63 280 4.8 47 21,000 78,000 0,000 100 A 30 099 13 63 320 3.8 64 33,000 130,000 210,000 125 A 30 099 13 63 390 3.3 98 47,000 1 390,000 160 A 30 100 13 63 600 2.3 103 90,000 330,000 570,000 200 A 30 100 50 800 1.9 134 230,000 4 704,000 250 A 30 100 50 1,000 1.6 191 371,000 750,000 1,101,000 315 A 30 100 50 1,260 1.2 281 545,000 1,066,000 1,616,000 355 A 30 100 50 1,420 1.0 336 825,000 1,420,000 2,225,000 TIME CURRENT CHARACTERISTICS AND CUT OFF CURRENT DIAGRAM PLEASE REFER TO PAGES HHD 33 AND HHD 34 HHD 23

HHD FUSES Electrical Characteristics DIN Size Rated voltage Class E= 442 mm AC 3/7.2 kv Back up Rated Part No. Rated Minimum Cold Power Pre-arcing Total I 2 t value current breaking breaking resistance loss I 2 t-value @ 3 kv @ 7.2 kv current ka current A mohm W A 2 s A 2 s A 2 s 100 A 30 109 13 63 320 3.8 64 33,000 130,000 210,000 125 A 30 109 13 63 390 3.3 98 47,000 1 390,000 160 A 30 110 13 63 600 2.3 85 90,000 330,000 570,000 200 A 30 110 50 800 2.1 155 230,000 4 704,000 250 A 30 110 50 1,000 1.8 233 371,000 750,000 1,101,000 315 A 30 110 50 1,260 1.5 281 545,000 1,066,000 1,616,000 355 A 30 110 50 1,420 1.3 320 825,000 1,420,000 2,225,000 400 A 30 110 50 1,600 1.1 347 1,000,000 1,900,000 2,528,000 500 A 30 110 50 2,000 0.85 430 1,668,000 3,162,000 4,500,000 TIME CURRENT CHARACTERISTICS AND CUT OFF CURRENT DIAGRAM PLEASE REFER TO PAGES HHD 33 AND HHD 34 HHD 24

Electrical Characteristics FUSES HHD DIN Size Rated voltage Class E= 192 mm AC 6/12 kv Back up Rated Part No. Rated Minimum Cold Power Pre-arcing Total I 2 t value current breaking breaking resistance loss I 2 t-value @ 6 kv @ 12 kv current ka current A mohm W A 2 s A 2 s A 2 s 6.3 A 30 119 13 63 22 297 16 45 210 360 10 A 30 119 13 63 34 189 28 75 350 560 16 A 30 119 13 63 56 87 28 250 1,100 2,000 20 A 30 267 13 63 70 46 23 640 2,900 4,800 25 A 30 267 13 63 90 36 29 1,050 4,700 7,500 31.5 A 30 267 13 63 110 29 38 1,700 6,600 12,000 40 A 30 267 13 63 0 22 50 2,900 12,000 19,000 50 A 30 267 13 63 170 16 56 5,700 20,000 33,000 63 A 30 267 13 63 210 12 63 10,700 40,000 66,000 DIN Size Rated voltage Class E= 292 mm AC 6/12 kv Back up Rated Part No. Rated Minimum Cold Power Pre-arcing Total I 2 t value current breaking breaking resistance loss I 2 t-value @ 6 kv @ 12 kv current ka current A mohm W A 2 s A 2 s A 2 s 6.3 A 30 004 13 63 22 297.0 16 45 210 360 10 A 30 004 13 63 34 189.0 28 75 350 560 16 A 30 004 13 63 56 84.0 28 250 1,100 2,000 20 A 30 004 13 63 70 45.0 23 640 2,900 4,800 25 A 30 004 13 63 90 34.0 29 1,050 4,700 7,500 31.5 A 30 004 13 63 110 28.0 38 1,700 6,600 12,000 40 A 30 004 13 63 0 22.0 50 2,900 12,000 19,000 50 A 30 004 13 63 170 16.0 56 5,700 20,000 33,000 63 A 30 012 13 63 210 12.0 63 10,700 40,000 66,000 80 A 30 012 13 63 280 8.5 76 21,000 78,000 0,000 100 A 30 012 13 63 320 6.5 104 33,000 130,000 210,000 125 A 30 012 13 63 390 5.5 159 47,000 1 390,000 160 A 30 020 13 63 600 3.9 173 90,000 330,000 570,000 200 A 30 020 50 800 3.0 234 230,000 4 704,000 TIME CURRENT CHARACTERISTICS AND CUT OFF CURRENT DIAGRAM PLEASE REFER TO PAGES HHD 33 AND HHD 34 HHD 25

HHD FUSES Electrical Characteristics DIN Size Rated voltage Class E= 442 mm AC 6/12 kv Back up Rated Part No. Rated Minimum Cold Power Pre-arcing Total I 2 t value current breaking breaking resistance loss I 2 t-value @ 6 kv @ 12 kv current ka current A mohm W A 2 s A 2 s A 2 s 6.3 A 30 101 13 63 22 297.0 16 45 210 360 10 A 30 101 13 63 34 189.0 28 75 350 560 16 A 30 101 13 63 56 87.0 19 250 1,100 2,000 20 A 30 101 13 63 70 46.0 22 640 2,900 4,800 25 A 30 101 13 63 90 36.0 28 1,050 4,700 7,500 31.5 A 30 101 13 63 110 29.0 37 1,700 6,600 12,000 40 A 30 101 13 63 0 22.0 48 2,900 12,000 19,000 50 A 30 101 13 63 170 16.0 54 5,700 20,000 33,000 63 A 30 102 13 63 210 12.0 58 10,700 40,000 66,000 80 A 30 102 13 63 280 8.5 70 21,000 78,000 0,000 100 A 30 102 13 63 320 6.5 96 33,000 130,000 210,000 125 A 30 102 13 63 390 5.5 7 47,000 1 390,000 160 A 30 103 13 63 600 3.9 172 90,000 330,000 570,000 200 A 30 103 50 800 2.9 193 230,000 4 704,000 250 A 30 103 50 1,000 2.6 269 371,000 750,000 1,101,000 DIN Size Rated voltage Class E= 537 mm AC 6/12 kv Back up Rated Part No. Rated Minimum Cold Power Pre-arcing Total I 2 t value current breaking breaking resistance loss I 2 t-value @ 6 kv @ 12 kv current ka current A mohm W A 2 s A 2 s A 2 s 100 A 30 211 13 63 320 6.5 96 33,000 130,000 210,000 125 A 30 211 13 63 390 5.5 7 47,000 1 390,000 160 A 30 211 13 63 600 3.9 172 90,000 330,000 570,000 200 A 30 211 50 800 3.2 193 230,000 4 704,000 250 A 30 211 50 1,000 2.6 274 371,000 750,000 1,101,000 315 A 30 211 50 1,260 2.2 382 545,000 1,066,000 1,616,000 TIME CURRENT CHARACTERISTICS AND CUT OFF CURRENT DIAGRAM PLEASE REFER TO PAGES HHD 33 AND HHD 34 HHD 26

Electrical Characteristics FUSES HHD DIN Size Rated voltage Class E= 292 mm AC10/17.5 kv Back up Rated Part No. Rated Minimum Cold Power Pre-arcing Total I 2 t value current breaking breaking resistance loss I 2 t-value @ 10 kv @ 17.5 kv current ka current A mohm W A 2 s A 2 s A 2 s 6.3 A 30 255 13 53 22 397.0 21 45 210 360 10 A 30 255 13 53 34 252.0 38 75 350 560 16 A 30 255 13 53 56 116.0 37 250 1,100 2,000 20 A 30 221 13 63 70 62.0 40 640 2,900 4,800 25 A 30 221 13 63 90 48.0 56 1,050 4,700 7,500 31.5 A 30 221 13 63 110 39.0 65 1,700 6,600 12,000 40 A 30 221 13 63 0 29.0 84 2,900 12,000 19,000 50 A 30 221 13 63 170 21.0 101 5,700 20,000 33,000 63 A 30 222 13 85 210 16.0 106 10,700 40,000 66,000 80 A 30 222 13 85 280 11.0 137 21,000 78,000 0,000 100 A 30 222 13 85 320 8.7 182 33,000 130,000 210,000 125 A 30 222 13 85 390 7.5 235 47,000 1 390,000 160 A 30 222 13 85 600 5.2 290 90,000 330,000 570,000 DIN Size Rated voltage Class E= 367 mm AC 10/17.5 kv Back up Rated Part No. Rated Minimum Cold Power Pre-arcing Total I 2 t value current breaking breaking resistance loss I 2 t-value @ 10 kv @ 17.5 kv current ka current A mohm W A 2 s A 2 s A 2 s 6.3 A 30 176 13 63 22 397.0 21 45 210 360 10 A 30 176 13 63 34 252.0 38 75 350 560 16 A 30 176 13 63 56 116.0 37 250 1,100 2,000 20 A 30 176 13 63 70 62.0 40 640 2,900 4,800 25 A 30 176 13 63 90 48.0 56 1,050 4,700 7,500 31.5 A 30 177 13 63 110 39.0 65 1,700 6,600 12,000 40 A 30 177 13 63 0 29.0 84 2,900 12,000 19,000 50 A 30 177 13 63 170 21.0 101 5,700 20,000 33,000 63 A 30 177 13 63 210 16.0 106 10,700 40,000 66,000 80 A 30 178 13 63 280 11.0 137 21,000 78,000 0,000 100 A 30 178 13 63 320 8.7 182 33,000 130,000 210,000 125 A 30 178 13 63 390 7.5 235 47,000 1 390,000 160 A 30 178 13 63 600 5.2 290 90,000 330,000 570,000 200 A 30 178 40 800 3.85 330 230,000 4 704,000 TIME CURRENT CHARACTERISTICS AND CUT OFF CURRENT DIAGRAM PLEASE REFER TO PAGES HHD 33 AND HHD 34 HHD 27

HHD FUSES Electrical Characteristics DIN Size Rated voltage Class E= 442 mm AC 10/17.5 kv Back up Rated Part No. Rated Minimum Cold Power Pre-arcing Total I 2 t value current breaking breaking resistance loss I 2 t-value @ 10 kv @ 17.5 kv current ka current A mohm W A 2 s A 2 s A 2 s 6.3 A 30 231 13 63 22 397.0 21 45 210 360 10 A 30 231 13 63 34 252.0 38 75 350 560 16 A 30 231 13 63 56 116.0 37 250 1,100 2,000 20 A 30 231 13 63 70 62.0 42 640 2,900 4,800 25 A 30 231 13 63 90 48.0 56 1,050 4,700 7,500 31.5 A 30 231 13 63 110 39.0 60 1,700 6,600 12,000 40 A 30 231 13 63 0 29.0 84 2,900 12,000 19,000 50 A 30 232 13 63 170 21.0 101 5,700 20,000 33,000 63 A 30 232 13 63 210 16.0 106 10,700 40,000 66,000 80 A 30 232 13 63 280 11.0 137 21,000 78,000 0,000 100 A 30 233 13 63 320 8.7 182 33,000 130,000 210,000 125 A 30 233 13 63 390 7.5 235 47,000 1 390,000 160 A 30 233 13 63 600 5.2 290 90,000 330,000 570,000 200 A 30 233 40 800 3.85 330 230,000 4 704,000 TIME CURRENT CHARACTERISTICS AND CUT OFF CURRENT DIAGRAM PLEASE REFER TO PAGES HHD 33 AND HHD 34 HHD 28

Electrical Characteristics FUSES HHD DIN Size Rated voltage Class E= 292 mm AC 10/24 kv Back up Rated Part No. Rated Minimum Cold Power Pre-arcing Total I 2 t value current breaking breaking resistance loss I 2 t-value @ 10 kv @ 24 kv current ka current A mohm W A 2 s A 2 s A 2 s 6.3 A 30 180 13 31.5 22 546 29 45 210 360 10 A 30 180 13 31.5 34 347 52 75 350 560 16 A 30 180 13 31.5 56 160 59 250 1,100 2,000 20 A 30 225 13 31.5 70 86 46 640 2,900 4,800 25 A 30 225 13 31.5 90 66 56 1,050 4,700 7,500 31.5 A 30 225 13 31.5 110 53 72 1,700 6,600 12,000 40 A 30 225 13 31.5 0 41 106 2,900 12,000 19,000 50 A 30 225 13 31.5 170 29 108 5,700 20,000 33,000 63 A 30 225 13 31.5 210 21 132 10,700 40,000 66,000 DIN Size Rated voltage Class E= 442 mm AC 10/24 kv Back up Rated Part No. Rated Minimum Cold Power Pre-arcing Total I 2 t value current breaking breaking resistance loss I 2 t-value @ 10 kv @ 24 kv current ka current A mohm W A 2 s A 2 s A 2 s 6.3 A 30 006 13 63 22 546 29 45 210 360 10 A 30 006 13 63 34 347 52 75 350 560 16 A 30 006 13 63 56 151 59 250 1,100 2,000 20 A 30 006 13 63 70 83 46 640 2,900 4,800 25 A 30 006 13 63 90 62 56 1,050 4,700 7,500 31.5 A 30 006 13 63 110 52 72 1,700 6,600 12,000 40 A 30 006 13 63 0 41 106 2,900 12,000 19,000 50 A 30 0 13 63 170 29 108 5,700 20,000 33,000 63 A 30 0 13 63 210 22 132 10,700 40,000 66,000 80 A 30 0 13 63 280 16 174 21,000 78,000 0,000 100 A 30 022 13 63 320 13 234 33,000 130,000 210,000 125 A 30 022 13 40 390 11 320 47,000 1 390,000 TIME CURRENT CHARACTERISTICS AND CUT OFF CURRENT DIAGRAM PLEASE REFER TO PAGES HHD 33 AND HHD 34 HHD 29

HHD FUSES Electrical Characteristics DIN Size Rated voltage Class E= 537 mm AC 10/24 kv Back up Rated Part No. Rated Minimum Cold Power Pre-arcing Total I 2 t value current breaking breaking resistance loss I 2 t-value @ 10 kv @ 24 kv current ka current A mohm W A 2 s A 2 s A 2 s 6.3 A 30 203 13 63 22 546.0 29 45 210 360 10 A 30 203 13 63 34 347.0 52 75 350 560 16 A 30 203 13 63 56 160.0 57 250 1,100 2,000 20 A 30 203 13 63 70 86.0 45 640 2,900 4,800 25 A 30 203 13 63 90 66.0 55 1,050 4,700 7,500 31.5 A 30 203 13 63 110 53.0 70 1,700 6,600 12,000 40 A 30 203 13 63 0 43.0 103 2,900 12,000 19,000 50 A 30 204 13 63 170 29.0 101 5,700 20,000 33,000 63 A 30 204 13 63 210 21.0 121 10,700 40,000 66,000 80 A 30 204 13 63 280 16.0 7 21,000 78,000 0,000 100 A 30 196 13 63 320 13.0 240 33,000 130,000 210,000 125 A 30 196 13 40 390 11.0 320 47,000 1 390,000 160 A 30 196 13 31.5 600 8.0 381 90,000 330,000 570,000 200 A 30 196 31.5 800 5.3 440 230,000 4 704,000 TIME CURRENT CHARACTERISTICS AND CUT OFF CURRENT DIAGRAM PLEASE REFER TO PAGES HHD 33 AND HHD 34 HHD 30

Electrical Characteristics FUSES HHD DIN Size Rated voltage Class E= 442 mm AC 20/36 kv Back up Rated Part No. Rated Minimum Cold Power Pre-arcing Total I 2 t value current breaking breaking resistance loss I 2 t-value @ 20 kv @ 36 kv current ka current A mohm W A 2 s A 2 s A 2 s 6.3 A 30 181 13 20 22 819 44 45 210 360 10 A 30 181 13 20 34 521 78 75 350 560 16 A 30 181 13 20 56 241 74 250 1,100 3,000 DIN Size Rated voltage Class E= 537 mm AC 20/36 kv Back up Rated Part No. Rated Minimum Cold Power Pre-arcing Total I 2 t value current breaking breaking resistance loss I 2 t-value @ 20 kv @ 36 kv current ka current A mohm W A 2 s A 2 s A 2 s 6.3 A 30 008 13 40 22 819 44 45 210 360 10 A 30 008 13 40 34 521 78 75 350 560 16 A 30 008 13 40 56 241 79 250 1,100 2,000 20 A 30 008 13 40 70 129 66 640 2,900 4,800 25 A 30 008 13 40 90 99 87 1,050 4,700 7,500 31.5 A 30 016 13 40 110 80 102 1,700 6,600 12,000 40 A 30 016 13 40 0 60 4 2,900 12,000 19,000 50 A 30 024 13 40 170 44 186 5,700 20,000 33,000 63 A 30 024 13 40 210 32 224 10,700 40,000 66,000 80 A 30 024 13 40 280 23 280 21,000 78,000 0,000 TIME CURRENT CHARACTERISTICS AND CUT OFF CURRENT DIAGRAM PLEASE REFER TO PAGES HHD 33 AND HHD 34 HHD 31

HHD FUSES Electrical Characteristics DIN Size Rated voltage Class E= 292 mm AC 6/12 kv General Purpose Rated Part No. Breaking Cold Power Pre-arcing Total I 2 t value current current resistance loss I 2 t-value @ 12 kv ka mohm W A 2 s A 2 s 6.3 A 30 004 93 63 150 7 110 900 8 A 30 012 93 63 120 9 180 1,400 10 A 30 012 93 63 100 12 240 2,000 16 A 30 012 93 63 40 12 530 4,400 20 A 30 012 93 63 31 15 850 7,000 25 A 30 012 93 63 25 18 1,330 11,000 31.5 A 30 012 93 63 20 23 2,100 18,000 40 A 30 012 93 63 16 29 3,400 28,000 50 A 30 020 93 63 15 42 5,500 33,000 63 A 30 020 93 63 12 54 8,500 68,000 80 A 30 020 93 63 9 79 16,200 2,000 100 A 30 020 93 63 7.7 108 23,500 183,000 DIN Size Rated voltage Class E= 442 mm AC 10/24 kv General Purpose Rated Part No. Breaking Cold Power Pre-arcing Total I 2 t value current current resistance loss I 2 t-value @ 24 kv ka mohm W A 2 s A 2 s 6.3 A 30 006 93 40 273 13 110 900 8 A 30 0 93 40 220 17 180 1,400 10 A 30 0 93 40 180 22 240 2,000 16 A 30 0 93 40 70 19 530 4,400 20 A 30 0 93 40 55 27 850 7,000 25 A 30 0 93 40 45 38 1,330 11,000 31.5 A 30 022 93 40 41 54 2,100 18,000 40 A 30 022 93 40 33 77 3,400 28,000 TIME CURRENT CHARACTERISTICS AND CUT OFF CURRENT DIAGRAM PLEASE REFER TO PAGE HHD 35 HHD 32

Electrical Characteristics FUSES HHD Time Current Characteristics Back up t(s) Virtual Pre-arcing Time RMS Prospective Current I(A) Cut Off Current Diagram Back up Ic (ka) Cut-off Current Peak Prospective Short Circuit Current I(kA) HHD 33

HHD FUSES Electrical Characteristics Time Current Characteristics Back up t(s) Cut-off Current Peak Virtual Pre-arcing Time RMS Prospective Current I(A) Cut Off Current Diagram Back up Ic (ka) Prospective Short Circuit Current I(kA) HHD 34

Electrical Characteristics FUSES HHD Time Current Characteristics General Purpose t(s) Virtual Pre-arcing Time RMS Prospective Current I(A) Cut Off Current Diagram General Purpose Ic (ka) Cut-off Current Peak Prospective Short Circuit Current I(kA) HHD 35

HHD FUSES HV fuse link Vertical Cross Section Weather resistant label Integrated temperature limiter Sealing compound Shaped cap Melting element support Thermal Zone (at General Purpose fuse only) Ceramic insulating tube Silver melting element welded to contact strap Force / distance diagram Connecting straps pastened to contactcap by resistance welding 80 N 120 N Quarzsand mm mm HHD 36

FUSES HHD Recommendation for the protection of main transformer with HV-Fuse links DIN Standard Protection using LV-Fuse links* operating class gg / gl on the low voltage side TYPE A Transformer Line Voltage (kv) LV fuse rated capacity 6-7.2 10-12 20-24 30-36 gg / gl (kva) Rated current of the HV-fuse (A) (A) 50 10-16 10 6.3 4-6.3 63 100 20-31.5 16-20 10 6.3-10 125 125 25-40 16-25 10-16 10 160 160 31.5-50 20-31.5 16-20 10-16 200 200 40-63 25-40 16-20 16 250 250 50-80 31.5-50 20-25 16-20 315 315 63-100 40-50 20-25 20-25 400 400 80-100 50-80 25-40 20-25 500 500 100-125 63-80 31.5-50 25-31.5 630 630 125-160 80-125 40-63 31.5-40 800 800 160 100-125 63 40-50 1000 1000 160-200 125-160 63-80 40-50 1250 1250 250 160 80 50 1600 2 x 160 200 100 63 2000 2 x 200 250 125 80 * Use of the recommended HV-Fuse links in connection with LV-fuse links of other manufacturer must be checked before installation TYPE A SIBA HV SIBA LV - gg / gl SIBA LV - gg / gl HHD 37

HHD FUSES Recommendation for the protection of main transformer with HV-Fuse links DIN Standard Protection without using a common LV-Fuse link on the low voltage side; the individual cable exits are protected with a LV-Fuse link operating class gl / gg TYPE B Transformer Line Voltage (kv) rated capacity 6-7.2 10-12 15-17.5 20-24 30-36 (kva) Rated current of the HV-fuse (A) 50 10-16 10 6.3-10 6.3 4-6.3 100 16-31.5 16-25 16 10 6.3-10 125 20-40 16-31.5 20 10-16 6.3-10 160 31.5-50 20-31.5 20-25 16-20 10-16 200 31.5-63 25-40 20-31.5 16-20 10-16 250 40-80 25-40 25-31.5 16-25 10-20 315 50-100 31.5-50 31.5 16-25 16-25 400 63-100 40-63 31.5-50 20-40 16-25 500 80-125 50-80 31.5-63 25-50 20-31.5 630 100-160 63-100 40-80 31.5-63 20-40 800 125-160 80-125 63-100 40-63 25-50 1000 160-200 100-160 63-100 50-80 31.5-50 1250 250 160 100 80 50 1600 2 x 160 200 125 100 63 2000 2 x 200 250 160 125 80 TYPE B SIBA HV SIBA LV - gg / gl HHD 38

FUSES HHD Application recommendation for protection of capacitors with HV-Fuse links DIN Standard Assignment of rated currents of HV-Fuse links to DIN Standard to Capacitor rated capacities Capacitor Line Voltage (kv) rated capacity 6-7.2 10-12 20-24 (kvar) Rated current of the HV-fuse (A) 50 10 6.3 6.3 100 20 10 6.3 200 40 20 10 250 50 25 16 300 63 31.5 16 400 80 40 20 500 100 50 25 750 160 80 40 1000 200 100 50 1250 250 125 63 1600 315 160 80 2000 315 200 100 To control the occuring voltage during switch off Fuse link should be chosen from the next higher voltage range. e.g. 10 kv Capacitor with 20 kv Fuse links. (See also IEC 549, Chapter II, 3.2) HHD 39

HHD FUSES HV Fuse-bases for indoor application Rated Voltage 7.2 kv Part No. 31 001 02 Rated Voltage 12 kv Part No. 31 003 02 Rated Voltage 24 kv Part No. 31 005 02 Rated Voltage 36 kv Part No. 31 007 02 Rated Voltage 24 kv Part No. 31 221 01* A 13.78 (350 mm) A 17.72 (450 mm) A 23.62 (600 mm) A 27.36 (695 mm) A 17.72 (450 mm) B 1.38 (35 mm) C 3.35 (85 mm) D 0.70 (18 mm) E 7.60 (193 mm) F 6. (156 mm) G 12.20 (310 mm) H 9.53 (242 mm) I 0.60 (15 mm) J 2.17 (55 mm) K 1.38 (35 mm) L.96 (380 mm) B 1.38 (35 mm) C 3.35 (85 mm) D 0.70 (18 mm) E 11.54 (293 mm) F 6. (156 mm) G 16. (410 mm) H 9.53 (242 mm) I 0.60 (15 mm) J 7.10 (180 mm) L 18.90 (480 mm) B 1.38 (35 mm) C 3.35 (85 mm) D 0.70 (18 mm) E 17.44 (443 mm) F 9.30 (236 mm) G 22.60 (574 mm) H 12.68 (322 mm) I 0.60 (15 mm) J 11.80 (300 mm) L 24.80 (630 mm) B 1.38 (35 mm) C 3.35 (85 mm) D 0.70 (18 mm) E 21.18 (538 mm) F 12.83 (326 mm) G 26.60 (676 mm) H 16.22 (412 mm) I 0.60 (15 mm) J.96 (380 mm) L 28.54 (725 mm) B 1.38 (35 mm) C 3.35 (85 mm) D 0.70 (18 mm) E 11.54 (293 mm) F 9.30 (236 mm) G 16. (410 mm) H 12.68 (322 mm) I 0.60 (15 mm) J 7.10 (180 mm) L 18.90 (480 mm) * Reduced Length for 24 kv Fuse links, E= 292 mm HHD 40

FUSES HHD HV Fuse-bases for outdoor application Rated Voltage 7.2 kv Part No. 31 002 01 Rated Voltage 12 kv Part No. 31 004 01 Rated Voltage 24 kv Part No. 31 006 01 Rated Voltage 36 kv Part No. 31 008 01 A 13.78 (350 mm) A 17.72 (450 mm) A 23.62 (600 mm) A 27.36 (695 mm) B 1.38 (35 mm) C 4.72 (120 mm) D 0.80 (20 mm) E 7.60 (193 mm) F 9.33 (237 mm) G 16. (410 mm) H 12.80 (325 mm) I 0.60 (15 mm) J 2.17 (55 mm) K 1.38 (35 mm) L.96 (380 mm) N 3.15 (80 mm) O 0.43 (11 mm) P.57 (370 mm) B 1.38 (35 mm) C 4.72 (120 mm) D 0.80 (20 mm) E 11.54 (293 mm) F 9.33 (237 mm) G 20.08 (510 mm) H 12.80 (325 mm) I 0.60 (15 mm) J 7.10 (180 mm) L N O P 18.90 (480 mm) 3.15 (80 mm) 0.43 (11 mm) 18.50 (470 mm) B 1.38 (35 mm) C 4.72 (120 mm) D 0.80 (20 mm) E 17.44 (443 mm) F 12.09 (307 mm) G 25.98 (660 mm) H 15.55 (395 mm) I 0.60 (15 mm) J 11.81 (300 mm) L N O P 24.80 (630 mm) 3.15 (80 mm) 0.43 (11 mm) 24.40 (620 mm) B 1.38 (35 mm) C 4.72 (120 mm) D 0.80 (20 mm) E 21.18 (538 mm) F 15.24 (387 mm) G 30.91 (785 mm) H 18.70 (475 mm) I 0.60 (15 mm) J.95 (380 mm) L N O P 28.54 (725 mm) 3.15 (80 mm) 0.43 (11 mm) 29.33 (620 mm) HHD 41

HHD FUSES Microswitch Part No. L= 660 mm 31 001 10 L= 900 mm 31 001 Microswitch Part No. 28 001 04 250 V / 6 A 1 change over contact Flexible Cable Connection bar of the spring clip contact Part No. 34 002 01 HV-Fuse cap HHD 42

FUSES HHD Fuse Clip Part No. HV-Spring clip contact with connection bar 34 002 01 A 1.38 (35 mm) B 1.26 (32 mm) F 0.24 (156 mm) G 2.80 (71.5 mm) H 3.74 (95 mm) L 3.66 (93 mm) M M 10 Spacer Part No. 31 002 01.3 A 1.26 (32 mm) B 1.38 (35 mm) C 0.24 (6 mm) D 0.40 (18 mm) E 0.20 (5 mm) F 0.70 (18 mm) G 0.26 (6.5 mm) HHD 00 43

HHD FUSES 24 kv Extension adapter for high voltage Fuses 12kV Part No. 34 006 01 A 1.77 (45 mm) B 0.06 (1.5 mm) C 2.00 (51 mm) D 1.73 (44 mm) F 1.77 (45 mm) G 0.20 (5 mm) H 2.76 (70 mm) L 7.28 (185 mm) HV-Fuse with 24 kv Extension adapter (Part No. 34 006 01) A 1.77 (45 mm) E1 11.50 (292 mm) E2 17.40 (442 mm) F 1.30 (33 mm) L 20.00 (508 mm) HHD 44

FUSES HHD Test-Fuse with time delayed release for testing the release mechanism in enclosed medium voltage switchgear Part No. 33 010 03 A 1.77 (45 mm) D 2.76 (70 mm) E 7.56 (192 mm) F 1.34 (34 mm) G 0.30 (8 mm) H 1.06 (27 mm) L 10.24 (260 mm) Clamp lever for timer Force (N) To change E an adaptor is available from 192 mm to 292 mm Part No. 34 004 02 from 192 mm to 442 mm Part No. 34 006 02 Travel (mm) HHD 00 45

HHD FUSES HV-Contact clip Rated Current for indoor and outdoor application 200 A Part No. 31 003 02.20 B 1.26 (32 mm) G 2.80 (71.5 mm) H 3.74 (95 mm) HV-Contact clip Rated Current for indoor and outdoor application > 200 A Part No. 34 001 01.20 B 1.26 (32 mm) G 2.90 (73.5 mm) H 4.92 (125 mm) HHD 46

HHD FUSES HHD 48

DRIWISA HIGH VOLTAGE CURRENT-LIMITING FUSES HIGH INTERRUPTING CAPACITY INDOOR AND OUTDOOR USE Overview DRIWISA high voltage, current-limiting fuses are devices with a high interrupting capacity to protect high voltage systems against short-circuits. They are selective elements for individual operation, with very well defined time-current characteristics, ideal for protection of transformers, motors, capacitors banks, cables, lines and other high voltage equipment installed in switchgear and distribution networks. The accumulated experience for almost 30 years of DRIESCHER Y WITTJOHANN, S.A. in Mexico with the support of FRITZ DRIESCHER GmbH in Germany, has permitted the use of the electrical principles and phenomena involved during the fusing and arcing process, which are the basis to design and manufacture the fuses with a high dependability and quality level. The company has also characterized herself for the support and instructing capacity for its customers, making sure, that every technical problem the client has, is solved to a complete satisfaction. DRIWISA high voltage, current-limiting fuses are designed and manufactured according to international standards. This means, that the mechanical and dimensional features, such as the tube diameters and lenghts and the force of the tripping pin of the fuses are according to these standards. The electrical features and specifications, such as the maximum interrupting current (I 1 ), the critical interrupting current (I 2 ), and the minimum interrupting current (I 3 ) have been satisfactorily tested in internationally recognized labotarories. DRIWISA fuses are built within a service range from 2.4 to 38 kv. The DRS series is built for indoor use, while the DRS series (with "F" end-code) is used in outdoor applications, even for installation in tropical and very humid climates, for system frecuencies from 40 to 60 Hz. These fuses can be installed on special fuse-holders, non-load isolator switches and load-break disconnecting switches, thus giving an adecuate protection against the dangerous thermic and dynamic stresses during a short-circuit (refer to the corresponding sections in the catalogue). Fuses from the DRK series, having tapped end-caps, may be used for capacitor protection, being screwed directly onto the capacitor bushings. HIGH VOLTAGE EQUIPMENT MANUFACTURERS SAN LUIS TLATILCO Nº 29 PARQUE INDUSTRIAL NAUCALPAN, C.P.53470 NAUCALPAN, EDO. DE MEX. TEL. (5255) 5300 8219, (5255) 5300 0210 FAX (5255) 5301 3707 EDITION 2003 I-1

DRIWISA HIGH VOLTAGE CURRENT-LIMITING FUSES HIGH INTERRUPTING CAPACITY INDOOR AND OUTDOOR USE Currrent-limiting: When protecting equipment such as transformers, motors, capacitors, cables or lines with DRIWISA fuses the currents flowing in case of a short-circuit are considerably reduced, due to the current-limiting characteristic of the fuses (refer to Figure 5 in the Fuse Manual). Fuses not sensitive to transformer or motor inrush currents: Due to their relatively slow time-current characteristic, DRIWISA fuses installed to protect transformers or motors do not exhibit premature fusion or degradation of the fuse-elements if selected according to the recommendations given in Technical Bulletins 201 and 202. Permanently fixed fuse-elements: The fuse-elements are wound on special element-holders with dented borders to ensure they are held in place permanently, thus avoiding dislocation and preventing internal short-circuits, which would provoke a degradation of the fuses characteristics. Tripping device with excellent operation characteristics: DRIWISA fuses are equipped with a tripping device (striker pin) acting through a stored-energy mechanism in a precompressed spring, which trips with a force of 120 N (120 kp), large enough to even open disconnecting switches which have not been operated during an extended period of time, thus presenting friction and resistance due to dust, dirt and corrosion (refer to Figure 3 in the Fuse Manual). High interrupting capacity: DRIWISA fuses display a high interrupting capacity which permits the interruption of very high short-circuit currents (refer to Figure 6 in the Fuse Manual). Selectivity and protection coordination: Maintaining a ratio of 1:1.6 between fuses installed in series the right coordination and protection selectivity is achieved, which makes isolation and faultdetection easy. Unnecessary power interruptions can be avoided (refer to section "Selection" in the Fuse Manual). Special sealing of fuses for outdoor service: The sealing of the fuses is accomplished by the use of special epoxic resins to avoid moisture penetration. For outdoor service fuses a special weld is used to perfectly seal against humidity. Repair with factory warranty: Due to their special design and construction DRIWISA fuses are the only ones that permit repairing in the factory, guaranteeing their original characteristics, when the porcelain tube has not been damaged. This means an interesting economic saving feature and an alternative for recicling materials, as a contribution to the environment protection. Immediate availability: Due to the large distribution network set up by DRIESCHER Y WITTJOHANN S.A. with authorized representatives located at strategic locations, DRIWISA fuses are made available on short notice, thus representing a great advantage for the immediate replacement of used elements. Technical support: DRIESCHER Y WITTJOHANN, S.A. offers her customers immediate technical support and advise when needed as for the proper selection of the right fuse for each particular case, to protect transformers, motors, capacitors, distribution lines and any other high voltage equipment, editing technical bulletins with complementary information on the fuses and on subjects related to their application, selection and maintenance. HIGH VOLTAGE EQUIPMENT MANUFACTURERS SAN LUIS TLATILCO Nº 29 PARQUE INDUSTRIAL NAUCALPAN, C.P.53470 NAUCALPAN, EDO. DE MEX. TEL. (5255) 5300 8219, (5255) 5300 0210 FAX (5255) 5301 3707 EDITION 2003 I-2

DRIWISA HIGH VOLTAGE CURRENT-LIMITING FUSES HIGH INTERRUPTING CAPACITY INDOOR AND OUTDOOR USE SELECTION CHART DRIESCHER Y WITTJOHANN, S.A. manufactures DRIWISA fuses types DRS, DRK and DRN for the voltage and current ratings shown in the Tables of pages 5 to 11 with the interrupting capacities and dimensions given in the corresponding columns. The following versions are available: TYPE END-CODE CHARACTERISTICS / APPLICATION DRS without Indoor service, with striker-pin from 2 Amperes. For transformer, end-code motor and overhead lines and cable feeders protection. Commonly used in combination with load-break switches and vacuum contactors. DRS...F...F Outdoor service, for polluted or humid environments. For transformer, motor and overhead lines and cable feeders protection. DRK without Indoor service, tapped end-caps, without striker pin. For capacitor protection. end-code Screw-mounted on bushings. DRN without Indoor service, without striker-pin, 1, 2 and 4 Amperes only for potential end-code transformer protection. They have special "e" lenghts. For mounting on fuse-holders. MAXIMUM VOLTAGE SERIE (phase to phase) kv DR...04 4.8 DR...07 7.2 DR...12 12 DR...13 13.8 DR...15 17.5 DR...20 25.8 DR...30 38 Selection criteria are chosen according to the application, as described in Technical Bulletins 201 to 205. HIGH VOLTAGE EQUIPMENT MANUFACTURERS SAN LUIS TLATILCO Nº 29 PARQUE INDUSTRIAL NAUCALPAN, C.P.53470 NAUCALPAN, EDO. DE MEX. TEL. (5255) 5300 8219, (5255) 5300 0210 FAX (5255) 5301 3707 EDITION 2003 I-3

DRIWISA HIGH VOLTAGE CURRENT-LIMITING FUSES HIGH INTERRUPTING CAPACITY INDOOR AND OUTDOOR USE General specifications Fuse dimensions according to international standards. Type DRS and DRS F with striker-pin Indoor service: without end-code Outdoor service: with F end-code DRS..A DRS..B 2 66 mm 85 mm size e 1 192 mm e 2 292 mm 4 442 mm 5 537 mm L e + 66 mm DW-2002 Type DRK and DRK F without striker-pin For capacitor protection Indoor and outdoor service DRK..A DRK..B 2 66 mm 85 mm size e 1 192 mm e 2 292 mm 4 442 mm 5 537 mm L e + 66 mm DW-2003 Type DRN and DRN F without striker-pin Indoor service: without end-code Outdoor service: with F end-code For potential transformer protection. 1, 2 and 4 Amp. DRN Voltage size e 1 162 mm 7.2 y 17.5 kv e 2 280 mm 25.8 kv 4 433 mm 38 kv L e + 60 mm Dimensions in mm DW-2001 HIGH VOLTAGE EQUIPMENT MANUFACTURERS SAN LUIS TLATILCO Nº 29 PARQUE INDUSTRIAL NAUCALPAN, C.P.53470 NAUCALPAN, EDO. DE MEX. TEL. (5255) 5300 8219, (5255) 5300 0210 FAX (5255) 5301 3707 EDITION 2003 I-4

DRIWISA HIGH VOLTAGE CURRENT-LIMITING FUSES HIGH INTERRUPTING CAPACITY INDOOR AND OUTDOOR USE Fuses with striker pin for transformer, motor and overhead lines and cable feeders protection. INTERRUPTING MINIMUM RATED CAPACITY INTERRUPTING DIMENSIONS WEIGHT TYPE CURRENT I n I 1 CURRENT I 3 e L 1 2 approx. A ka A mm mm mm mm kg Vmax = 13.8 kv DRS13/002-A2 2 31.5 5 292 358 45 66 2.1 DRS13/004-A2 4 31.5 10 292 358 45 66 2.1 DRS13/006-A2 6 31.5 15 292 358 45 66 2.1 DRS13/010-A2 10 31.5 25 292 358 45 66 2.1 DRS13/016-A2 16 31.5 40 292 358 45 66 2.1 DRS13/025-A2 25 31.5 63 292 358 45 66 2.1 DRS13/032-A2 32 31.5 80 292 358 45 66 2.1 DRS13/040-A2 40 31.5 100 292 358 45 66 2.1 DRS13/050-A2 50 31.5 125 292 358 45 66 2.1 DRS13/063-A2 63 31.5 189 292 358 45 66 2.1 DRS13/075-B2 75 20 240 292 358 45 85 3.2 DRS13/100-B2 100 20 300 292 358 45 85 3.2 Vmax = 17.5 kv DRS15/002-A4 2 80 5 442 508 45 66 2.8 DRS15/004-A4 4 80 10 442 508 45 66 2.8 DRS15/006-A4 6 80 15 442 508 45 66 2.8 DRS15/010-A4 10 80 25 442 508 45 66 2.8 DRS15/016-A4 16 80 40 442 508 45 66 2.8 DRS15/025-A4 25 80 63 442 508 45 66 2.8 DRS15/032-A4 32 80 80 442 508 45 66 2.8 DRS15/040-A4 40 80 100 442 508 45 66 2.8 DRS15/050-A4 50 80 125 442 508 45 66 2.8 DRS15/063-A4 63 40 189 442 508 45 66 2.8 DRS15/075-B4 75 63 240 442 508 45 85 4.5 DRS15/100-B4 100 40 300 442 508 45 85 4.5 DRS15/125-B4 125 40 375 442 508 45 85 4.5 DRS15/160-B4 160 20 480 442 508 45 85 4.5 DRS15/200-B4 200 25 800 442 508 45 85 4.5 DRS15/200-B5 200 25 800 537 603 45 85 5.4 Vmax = 25.8 kv DRS20/002-A4 2 40 5 442 508 45 66 2.8 DRS20/004-A4 4 40 10 442 508 45 66 2.8 DRS20/006-A4 6 40 15 442 508 45 66 2.8 DRS20/010-A4 10 40 25 442 508 45 66 2.8 DRS20/016-A4 16 40 40 442 508 45 66 2.8 DRS20/025-A4 25 40 63 442 508 45 66 2.8 DRS20/032-A4 32 40 80 442 508 45 66 2.8 DRS20/040-A4 40 40 100 442 508 45 66 2.8 DRS20/050-A4 50 25 125 442 508 45 66 2.8 DRS20/063-A4 63 25 189 442 508 45 66 2.8 DRS20/063-B4 63 40 189 442 508 45 85 4.3 DRS20/075-B4 75 25 240 442 508 45 85 4.3 DRS20/100-B4 100 25 300 442 508 45 85 4.3 DRS20/125-B4 125 40 375 442 508 45 85 4.3 DRS20/160-B4 160 25 480 442 508 45 85 4.3 DRS20/125-B5 125 40 375 537 603 45 85 5.4 DRS20/160-B5 160 25 480 537 603 45 85 5.4 HIGH VOLTAGE EQUIPMENT MANUFACTURERS SAN LUIS TLATILCO Nº 29 PARQUE INDUSTRIAL NAUCALPAN, C.P.53470 NAUCALPAN, EDO. DE MEX. TEL. (5255) 5300 8219, (5255) 5300 0210 FAX (5255) 5301 3707 EDITION 2003 I-5

DRIWISA HIGH VOLTAGE CURRENT-LIMITING FUSES HIGH INTERRUPTING CAPACITY INDOOR AND OUTDOOR USE Fuses with striker pin for transformer, motor and overhead lines and cable feeders protection. INTERRUPTING MINIMUM RATED CAPACITY INTERRUPTING DIMENSIONS WEIGHT TYPE CURRENT I n I 1 CURRENT I 3 e L 1 2 approx. A ka A mm mm mm mm kg Vmax = 4.8 kv DRS04/125-B1 125 40 375 192 258 45 85 2.6 DRS04/160-B1 160 40 480 192 258 45 85 2.6 DRS04/125-B2 125 63 375 292 358 45 85 3.2 DRS04/160-B2 160 63 480 292 358 45 85 3.2 DRS04/200-B2 200 63 800 292 358 45 85 3.2 DRS04/250-B2 250 40 1000 292 358 45 85 3.2 DRS04/315-B2 315 40 1260 292 358 45 85 3.2 Vmax = 7.2 kv DRS07/002-A1 2 40 5 192 258 45 66 1.5 DRS07/004-A1 4 40 10 192 258 45 66 1.5 DRS07/006-A1 6 40 15 192 258 45 66 1.5 DRS07/010-A1 10 40 25 192 258 45 66 1.5 DRS07/016-A1 16 40 40 192 258 45 66 1.5 DRS07/025-A1 25 40 63 192 258 45 66 1.5 DRS07/032-A1 32 40 80 192 258 45 66 1.5 DRS07/040-A1 40 40 100 192 258 45 66 1.5 DRS07/050-A1 50 40 125 192 258 45 66 1.5 DRS07/063-A1 63 40 189 192 258 45 66 1.5 DRS07/075-A1 75 40 240 192 258 45 66 1.5 DRS07/100-A1 100 40 300 192 258 45 66 1.5 Vmax = 7.2 kv DRS07/002-A2 2 63 5 292 358 45 66 2.1 DRS07/004-A2 4 63 10 292 358 45 66 2.1 DRS07/006-A2 6 63 15 292 358 45 66 2.1 DRS07/010-A2 10 63 25 292 358 45 66 2.1 DRS07/016-A2 16 63 40 292 358 45 66 2.1 DRS07/025-A2 25 63 63 292 358 45 66 2.1 DRS07/032-A2 32 63 80 292 358 45 66 2.1 DRS07/040-A2 40 63 100 292 358 45 66 2.1 DRS07/050-A2 50 63 125 292 358 45 66 2.1 DRS07/063-A2 63 63 189 292 358 45 66 2.1 DRS07/075-A2 75 63 240 292 358 45 66 2.1 DRS07/100-A2 100 63 300 292 358 45 66 2.1 DRS07/100-B4 100 63 300 442 508 45 85 4.5 DRS07/125-B4 125 40 375 442 508 45 85 4.5 DRS07/160-B4 160 40 480 442 508 45 85 4.5 DRS07/200-B4 200 63 800 442 508 45 85 4.5 DRS07/250-B4 250 40 1000 442 508 45 85 4.5 DRS07/315-B4 315 40 1260 442 508 45 85 4.5 DRS07/400-B4 400 20 1600 442 508 45 85 4.5 DRS07/500-B4 500 20 2000 442 508 45 85 4.5 Vmax = 12 kv DRS12/125-B2 125 63 375 292 358 45 85 3.1 DRS12/160-B2 160 63 480 292 358 45 85 3.1 DRS12/200-B2 200 63 800 292 358 45 85 3.1 HIGH VOLTAGE EQUIPMENT MANUFACTURERS SAN LUIS TLATILCO Nº 29 PARQUE INDUSTRIAL NAUCALPAN, C.P.53470 NAUCALPAN, EDO. DE MEX. TEL. (5255) 5300 8219, (5255) 5300 0210 FAX (5255) 5301 3707 EDITION 2003 I-6

DRIWISA HIGH VOLTAGE CURRENT-LIMITING FUSES HIGH INTERRUPTING CAPACITY INDOOR AND OUTDOOR USE Fuses with striker pin for transformer, motor and overhead lines and cable feeders protection. INTERRUPTING MINIMUM RATED CAPACITY INTERRUPTING DIMENSIONS WEIGHT TYPE CURRENT I n I 1 CURRENT I 3 e L 1 2 approx. A ka A mm mm mm mm kg Vmax = 38 kv DRS30/002-A5 2 31.5 5 537 603 45 66 3.3 DRS30/004-A5 4 31.5 10 537 603 45 66 3.3 DRS30/006-A5 6 31.5 15 537 603 45 66 3.3 DRS30/010-A5 10 31.5 25 537 603 45 66 3.3 DRS30/016-A5 16 31.5 40 537 603 45 66 3.3 DRS30/025-A5 25 31.5 63 537 603 45 66 3.3 DRS30/032-A5 32 31.5 80 537 603 45 66 3.3 DRS30/040-A5 40 31.5 100 537 603 45 66 3.3 DRS30/050-A5 50 31.5 125 537 603 45 66 3.3 DRS30/063-A5 63 16 189 537 603 45 66 3.3 DRS30/075-B5 75 20 240 537 603 45 85 5.4 DRS30/100-B5 100 20 300 537 603 45 85 5.4 Fuses without striker-pin for potential transformer protection: Vmax = 7.2 kv DRN07/001-A1R 1 40 3 162 228 45 66 1.4 DRN07/002-A1R 2 40 5 162 228 45 66 1.4 DRN07/004-A1R 4 40 10 162 228 45 66 1.4 DRN07/001-A1 1 40 3 192 258 45 66 1.5 DRN07/002-A1 2 40 5 192 258 45 66 1.5 Vmax = 13.8 kv DRN13/001-A1R 1 31.5 3 162 228 45 66 1.4 DRN13/002-A1R 2 31.5 5 162 228 45 66 1.4 DRN13/004-A1R 4 31.5 10 162 228 45 66 1.4 DRN13/001-A2 1 31.5 3 292 358 45 66 2.1 DRN13/002-A2 2 31.5 5 292 358 45 66 2.1 Vmax = 23 kv DRN20/001-A2R 1 31.5 3 280 346 45 66 1.9 DRN20/002-A2R 2 31.5 5 280 346 45 66 1.9 DRN20/004-A2R 4 31.5 10 280 346 45 66 1.9 DRN20/001-A4 1 40 3 442 508 45 66 2.1 DRN20/002-A4 2 40 5 442 508 45 66 2.1 Vmax = 38 kv DRN30/001-A4R 1 31.5 2.5 433 499 45 66 3.2 DRN30/002-A4R 2 31.5 5 433 499 45 66 3.2 DRN30/004-A4R 4 31.5 10 433 499 45 66 3.2 DRN30/001-A5 1 31.5 2.5 537 603 45 66 3.3 DRN30/002-A5 2 31.5 5 537 603 45 66 3.3 ❶ Real rated current is determined applying a factor of 90% over the value given in the table, for instance, a 400 A fuse, 400 x 0.9 = 360 A HIGH VOLTAGE EQUIPMENT MANUFACTURERS SAN LUIS TLATILCO Nº 29 PARQUE INDUSTRIAL NAUCALPAN, C.P.53470 NAUCALPAN, EDO. DE MEX. TEL. (5255) 5300 8219, (5255) 5300 0210 FAX (5255) 5301 3707 EDITION 2003 I-7

DRIWISA HIGH VOLTAGE CURRENT-LIMITING FUSES HIGH INTERRUPTING CAPACITY INDOOR AND OUTDOOR USE DUAL VERSION. Fuses with striker pin for transformer, motor and overhead lines and cable feeders protection. INTERRUPTING MINIMUM RATED CAPACITY INTERRUPTING DIMENSIONS WEIGHT TYPE CURRENT I n I 1 CURRENT I 3 e L 1 2 approx. A ka A mm mm mm mm kg Vmax = 4.8 kv Length 1 (192 mm) DRS04/250-B6 250 40 750 192 258 45 85 5.4 DRS04/315-B6 315 40 960 192 258 45 85 5.4 Length 2 (292 mm) DRS04/400-B7 400 63 1600 292 358 45 85 6.4 DRS04/500-B7 500 40 2000 292 358 45 85 6.4 DRS04/630-B7 630 40 2520 292 358 45 85 6.4 Vmax = 7.2 kv Length 2 (292 mm) DRS07/125-A7 125 63 378 292 358 45 66 4.4 DRS07/150-A7 150 63 480 292 358 45 66 4.4 DRS07/200-A7 200 63 600 292 358 45 66 4.4 Length 4 (442 mm) DRS07/315-B8 315 63 960 442 508 45 85 9.4 DRS07/400-B8 400 63 1600 442 508 45 85 9.4 DRS07/500-B8 500 40 2000 442 508 45 85 9.4 DRS07/630-B8 630 40 2520 442 508 45 85 9.4 Vmax = 12 kv Length 2 (292 mm) DRS12/250-B7 250 63 750 292 358 45 85 6.4 DRS12/315-B7 315 40 960 292 358 45 85 6.4 DRS12/400-B7 400 40 1600 292 358 45 85 6.4 Vmax = 13.8 kv Length 2 (292 mm) DRS13/125-A7 125 31.5 378 292 358 45 66 4.4 DRS13/150-B7 150 20 480 292 358 45 85 6.4 DRS13/200-B7 200 20 600 292 358 45 85 6.4 Vmax = 17.5 kv Length 4 (442 mm) DRS15/250-B8 250 40 750 442 508 45 85 9.4 DRS15/315-B8 315 40 960 442 508 45 85 9.4 DRS15/400-B8 400 20 1600 442 508 45 85 9.4 Length 5 (537 mm) DRS15/400-B9 400 25 1600 537 603 45 85 11 Vmax = 25.8 kv Length 4 (442 mm) DRS20/200-B8 200 25 600 442 508 45 85 9.4 DRS20/250-B8 250 20 750 442 508 45 85 9.4 DRS20/315-B8 315 20 960 442 508 45 85 9.4 Length 5 (537 mm) DRS20/250-B9 250 40 750 537 603 45 85 11 DRS20/315-B9 315 25 960 537 603 45 85 11 Vmax = 38 kv Length 5 (537 mm) DRS30/125-A9 125 16 378 537 603 45 66 6.8 DRS30/150-B9 150 20 480 537 603 45 85 11 DRS30/200-B9 200 20 600 537 603 45 85 11 HIGH VOLTAGE EQUIPMENT MANUFACTURERS SAN LUIS TLATILCO Nº 29 PARQUE INDUSTRIAL NAUCALPAN, C.P.53470 NAUCALPAN, EDO. DE MEX. TEL. (5255) 5300 8219, (5255) 5300 0210 FAX (5255) 5301 3707 EDITION 2003 I-8

DRIWISA HIGH VOLTAGE CURRENT-LIMITING FUSES HIGH INTERRUPTING CAPACITY INDOOR AND OUTDOOR USE Fuses without striker-pin for capacitor protection: INTERRUPTING MINIMUM RATED CAPACITY INTERRUPTING DIMENSIONS WEIGHT TYPE CURRENT I n I 1 CURRENT I 3 e L 1 2 approx. A ka A mm mm mm mm kg Vmax = 4.8 kv DRK04/125-B1 125 40 375 192 258 45 85 2.6 DRK04/160-B1 160 40 480 192 258 45 85 2.6 DRK04/125-B2 125 63 375 292 358 45 85 3.2 DRK04/160-B2 160 63 480 292 358 45 85 3.2 DRK04/200-B2 200 63 800 292 358 45 85 3.2 DRK04/250-B2 250 40 1000 292 358 45 85 3.2 DRK04/315-B2 315 40 1260 292 358 45 85 3.2 Vmax = 7.2 kv DRK07/004-A1 4 40 10 192 258 45 66 1.5 DRK07/006-A1 6 40 15 192 258 45 66 1.5 DRK07/010-A1 10 40 25 192 258 45 66 1.5 DRK07/016-A1 16 40 40 192 258 45 66 1.5 DRK07/025-A1 25 40 63 192 258 45 66 1.5 DRK07/032-A1 32 40 80 192 258 45 66 1.5 DRK07/040-A1 40 40 100 192 258 45 66 1.5 DRK07/050-A1 50 40 125 192 258 45 66 1.5 DRK07/063-A1 63 40 189 192 258 45 66 1.5 DRK07/075-A1 75 40 240 192 258 45 66 1.5 DRK07/100-A1 100 40 300 192 258 45 66 1.5 Vmax = 7.2 kv DRK07/006-A2 6 63 15 292 358 45 66 2.1 DRK07/010-A2 10 63 25 292 358 45 66 2.1 DRK07/016-A2 16 63 40 292 358 45 66 2.1 DRK07/025-A2 25 63 63 292 358 45 66 2.1 DRK07/032-A2 32 63 80 292 358 45 66 2.1 DRK07/040-A2 40 63 100 292 358 45 66 2.1 DRK07/050-A2 50 63 125 292 358 45 66 2.1 DRK07/063-A2 63 63 189 292 358 45 66 2.1 DRK07/075-A2 75 63 240 292 358 45 66 2.1 DRK07/100-A2 100 63 300 292 358 45 66 2.1 DRK07/100-B4 100 63 300 442 508 45 85 4.5 DRK07/125-B4 125 40 375 442 508 45 85 4.5 DRK07/160-B4 160 40 480 442 508 45 85 4.5 DRK07/200-B4 200 63 800 442 508 45 85 4.5 DRK07/250-B4 250 40 1000 442 508 45 85 4.5 DRK07/315-B4 315 40 1260 442 508 45 85 4.5 DRK07/400-B4 400 20 1600 442 508 45 85 4.5 DRK07/500-B4 500 20 2000 442 508 45 85 4.5 Vmax = 12 kv DRK12/125-B2 125 63 375 292 358 45 85 3.1 DRK12/160-B2 160 63 480 292 358 45 85 3.1 DRK12/200-B2 200 63 800 292 358 45 85 3.1 HIGH VOLTAGE EQUIPMENT MANUFACTURERS SAN LUIS TLATILCO Nº 29 PARQUE INDUSTRIAL NAUCALPAN, C.P.53470 NAUCALPAN, EDO. DE MEX. TEL. (5255) 5300 8219, (5255) 5300 0210 FAX (5255) 5301 3707 EDITION 2003 I-9

DRIWISA HIGH VOLTAGE CURRENT-LIMITING FUSES HIGH INTERRUPTING CAPACITY INDOOR AND OUTDOOR USE Fuses without striker-pin for capacitor protection: INTERRUPTING MINIMUM RATED CAPACITY INTERRUPTING DIMENSIONS WEIGHT TYPE CURRENT I n I 1 CURRENT I 3 e L 1 2 approx. A ka A mm mm mm mm kg Vmax = 13.8 kv DRK13/004-A2 4 31.5 10 292 358 45 66 2.1 DRK13/006-A2 6 31.5 15 292 358 45 66 2.1 DRK13/010-A2 10 31.5 25 292 358 45 66 2.1 DRK13/016-A2 16 31.5 40 292 358 45 66 2.1 DRK13/025-A2 25 31.5 63 292 358 45 66 2.1 DRK13/032-A2 32 31.5 80 292 358 45 66 2.1 DRK13/040-A2 40 31.5 100 292 358 45 66 2.1 DRK13/050-A2 50 31.5 125 292 358 45 66 2.1 DRK13/063-A2 63 31.5 189 292 358 45 66 2.1 DRK13/075-B2 75 20 240 292 358 45 85 3.2 DRK13/100-B2 100 20 300 292 358 45 85 3.2 Vmax = 17.5 kv DRK15/006-A4 6 80 15 442 508 45 66 2.8 DRK15/010-A4 10 80 25 442 508 45 66 2.8 DRK15/016-A4 16 80 40 442 508 45 66 2.8 DRK15/025-A4 25 80 63 442 508 45 66 2.8 DRK15/032-A4 32 80 80 442 508 45 66 2.8 DRK15/040-A4 40 80 100 442 508 45 66 2.8 DRK15/050-A4 50 80 125 442 508 45 66 2.8 DRK15/063-A4 63 40 189 442 508 45 66 2.8 DRK15/075-B4 75 63 240 442 508 45 85 4.5 DRK15/100-B4 100 40 300 442 508 45 85 4.5 DRK15/125-B4 125 40 375 442 508 45 85 4.5 DRK15/160-B4 160 20 480 442 508 45 85 4.5 DRK15/200-B4 200 25 800 442 508 45 85 4.5 DRK15/200-B5 200 25 800 537 603 45 85 5.4 Vmax = 25.8 kv DRK20/004-A4 4 40 10 442 508 45 66 2.8 DRK20/006-A4 6 40 15 442 508 45 66 2.8 DRK20/010-A4 10 40 25 442 508 45 66 2.8 DRK20/016-A4 16 40 40 442 508 45 66 2.8 DRK20/025-A4 25 40 63 442 508 45 66 2.8 DRK20/032-A4 32 40 80 442 508 45 66 2.8 DRK20/040-A4 40 40 100 442 508 45 66 2.8 DRK20/050-A4 50 25 125 442 508 45 66 2.8 DRK20/063-A4 63 25 189 442 508 45 66 2.8 DRK20/063-B4 63 40 189 442 508 45 85 4.3 DRK20/075-B4 75 25 240 442 508 45 85 4.3 DRK20/100-B4 100 25 300 442 508 45 85 4.3 DRK20/125-B4 125 40 375 442 508 45 85 4.3 DRK20/160-B4 160 25 480 442 508 45 85 4.3 DRK20/125-B5 125 40 375 537 603 45 85 5.4 DRK20/160-B5 160 25 480 537 603 45 85 5.4 HIGH VOLTAGE EQUIPMENT MANUFACTURERS SAN LUIS TLATILCO Nº 29 PARQUE INDUSTRIAL NAUCALPAN, C.P.53470 NAUCALPAN, EDO. DE MEX. TEL. (5255) 5300 8219, (5255) 5300 0210 FAX (5255) 5301 3707 EDITION 2003 I-10

DRIWISA HIGH VOLTAGE CURRENT-LIMITING FUSES HIGH INTERRUPTING CAPACITY INDOOR AND OUTDOOR USE Fuses without striker-pin for capacitor protection: INTERRUPTING MINIMUM RATED CAPACITY INTERRUPTING DIMENSIONS WEIGHT TYPE CURRENT I n I 1 CURRENT I 3 e L 1 2 approx. A ka A mm mm mm mm kg Vmax = 38 kv DRK30/004-A5 4 31.5 10 537 603 45 66 3.3 DRK30/006-A5 6 31.5 15 537 603 45 66 3.3 DRK30/010-A5 10 31.5 25 537 603 45 66 3.3 DRK30/016-A5 16 31.5 40 537 603 45 66 3.3 DRK30/025-A5 25 31.5 63 537 603 45 66 3.3 DRK30/032-A5 32 31.5 80 537 603 45 66 3.3 DRK30/040-A5 40 31.5 100 537 603 45 66 3.3 DRK30/050-A5 50 31.5 125 537 603 45 66 3.3 DRK30/063-A5 63 16 189 537 603 45 66 3.3 DRK30/075-B5 75 20 240 537 603 45 85 5.4 DRK30/100-B5 100 20 300 537 603 45 85 5.4 FOR MECHANICAL AND ELECTRICAL SPECIFICATIONS, SEE SECTION I OF CATALOG. HIGH VOLTAGE EQUIPMENT MANUFACTURERS SAN LUIS TLATILCO Nº 29 PARQUE INDUSTRIAL NAUCALPAN, C.P.53470 NAUCALPAN, EDO. DE MEX. TEL. (5255) 5300 8219, (5255) 5300 0210 FAX (5255) 5301 3707 EDITION 2003 I-11

DRIWISA HIGH VOLTAGE CURRENT-LIMITING FUSES HIGH INTERRUPTING CAPACITY INDOOR AND OUTDOOR USE Fuse selection chart for transformer protection: 1.- Determine the system voltage in kv. 2.- Determine the transformer power in kva. 3.- Find the rated current of the fuse (In) on the table below, in the intersection of the voltage column and the transformer power row. Pow er Operation voltage in kv in kva 2.4 4.16 4.8 7.2 13.2 13.8 15 17.5 23 25.8 34.5 36 Comments Serie 07 Serie 15 Serie 20 Serie 30 15 10 4 4 4 2 2 1 1 1 1 1 1 Fuse without 30 16 10 10 6 4 4 2 2 2 2 1 1 striker-pin 45 25 16 10 10 4 4 4 4 4 2 2 2 (1and 2 A) 75 40 25 25 16 6 6 6 6 4 4 4 4 112.5 63 32 32 25 10 10 10 10 6 6 4 4 150 75 40 40 25 16 16 16 10 10 6 6 6 225 125 63 63 40 25 25 25 16 16 10 10 10 300 160 100 75 50 32 25 25 25 16 16 10 10 Standard 400 200 125 100 75 40 40 32 32 25 25 16 16 Fuse w ith 500 250 160 125 100 50 40 40 32 25 25 16 16 striker-pin 750 400 200 200 125 75 63 63 50 40 40 25 25 (from 2 Amp) 1000 500 315 250 160 100 100 100 75 50 50 40 32 1250 2x315 400 315 200 125 125 100 100 63 63 50 40 One fuse 1500 == 500 400 250 160 125 125 100 75 75 50 50 per-phase 2000 == 2x315 500 400 200 160 160 160 100 100 75 75 2500 == == 2x315 400 2x125 200 200 200 125 125 100 100 3000 == == == 500 2x160 2x160 2x125 200 160 160 100 100 3750 == == == 2x315 2x200 2x160 2x160 2x125 2x100 2x100 2x63 2x63 Tw o fuses 5000 == == == == == == 2x200 2x200 2x160 2x125 2x100 2x100 per-phase 7500 == == == == == == == == == == == == Circuit-breaker 10000 == == == == == == == == == == == == required Rated fuse current (In) in Amperes 4.- For cases not considered in the table, calculate the fuse rated current using the formula below: In = 1.155 x kva. kv 5.- Choose the next higher current rating from the table below: Standardized fuse current ratings (In) 1 2 4 6 10 16 25 32 40 50 63 75 100 125 160 200 250 315 400 500 Serie 30: 30...38 kv Serie 20: 20...25.8 kv Serie 15: 12...17.5 kv Serie 07: 2.4...7.2 kv 6.- Consult the fuse Selection Charts and determine the corresponding type. 7.- For further details consult Technical Bulletin 201. HIGH VOLTAGE EQUIPMENT MANUFACTURERS SAN LUIS TLATILCO Nº 29 PARQUE INDUSTRIAL NAUCALPAN, C.P.53470 NAUCALPAN, EDO. DE MEX. TEL. (5255) 5300 8219, (5255) 5300 0210 FAX (5255) 5301 3707 EDITION 2003 I-12

DRIWISA HIGH VOLTAGE CURRENT-LIMITING FUSES HIGH INTERRUPTING CAPACITY INDOOR AND OUTDOOR USE FIGURE 8 DRIWISA fuses time-current characteristic curves. For fuses from 1 to 6 A HIGH VOLTAGE EQUIPMENT MANUFACTURERS SAN LUIS TLATILCO Nº 29 PARQUE INDUSTRIAL NAUCALPAN, C.P.53470 NAUCALPAN, EDO. DE MEX. TEL. (5255) 5300 8219, (5255) 5300 0210 FAX (5255) 5301 3707 EDITION 2003 H-13

DRIWISA HIGH VOLTAGE CURRENT-LIMITING FUSES HIGH INTERRUPTING CAPACITY INDOOR AND OUTDOOR USE FIGURE 9 DRIWISA fuses time-current characteristic curves. For fuses from 6 to 500 A HIGH VOLTAGE EQUIPMENT MANUFACTURERS SAN LUIS TLATILCO Nº 29 PARQUE INDUSTRIAL NAUCALPAN, C.P.53470 NAUCALPAN, EDO. DE MEX. TEL. (5255) 5300 8219, (5255) 5300 0210 FAX (5255) 5301 3707 EDITION 2003 H-

DRIWISA HIGH VOLTAGE CURRENT-LIMITING FUSES HIGH INTERRUPTING CAPACITY INDOOR AND OUTDOOR USE FIGURE 10 DRIWISA fuses I 2 t characteristic curve for operation times less than 0.1 sec HIGH VOLTAGE EQUIPMENT MANUFACTURERS SAN LUIS TLATILCO Nº 29 PARQUE INDUSTRIAL NAUCALPAN, C.P.53470 NAUCALPAN, EDO. DE MEX. TEL. (5255) 5300 8219, (5255) 5300 0210 FAX (5255) 5301 3707 EDITION 2003 H-15

DRIWISA HIGH VOLTAGE CURRENT-LIMITING FUSES HIGH INTERRUPTING CAPACITY INDOOR AND OUTDOOR USE RATED CURRENT (A) MAXIMUM RATED VOLTAGES (kv) 4.8 7.2 12 13.8 17.5 25.8 38 1 2 4 6 10 16 25 32 40 50 63 75 100 125 160 200 250 315 400 500 TABLE 1 DRIWISA current-limiting fuses manufacturing program DESIGN AND CONSTRUCTION: The fuse design ponders on a several compartments system or series of arcing chambers, where the voltaic arc produced by the fusion and/or evaporation of the fuse link is quenched. Fuse links, formed by one or several 99.9 % pure silver strips, are uniformly wound over a star shaped strip-holder (star-shaped body) built out of steatite (a ceramic material with great mechanical and thermal resistance), in agreement to every particular fuse design. Due to its tooth edges design, the star-shaped body guarantees the fuse link safe and firm position. Together the star-shaped body and the fuse links are put into a porcelain tube which sets up the fuse cilindric body, thus forming the series of arcing chambers (Figure 1). In every one of these arcing chambers a part of the voltaic arc produced by the fusion and/or evaporation of the fuse link when a short-circuit occurs, is started, developed and quenched. This process is described farther on. Therefore the fusion and interrupting process is carried out without the influence of external factors. Fuse links have a group of precision holes regularly spaced lengthwise, calibrated in agreement to each fuse feature, which constitutes a reduction in the conduction cross-section. When a short-circuit current is flowing, it is in these zones where the elements fusion is produced and the voltaic arc during the first part of the current wave is established. Type and number of parallel connected silver strips depend of the fuse rated current. HIGH VOLTAGE EQUIPMENT MANUFACTURERS SAN LUIS TLATILCO Nº 29 PARQUE INDUSTRIAL NAUCALPAN, C.P.53470 NAUCALPAN, EDO. DE MEX. TEL. (5255) 5300 8219, (5255) 5300 0210 FAX (5255) 5301 3707 EDITION 2003 H-6

DRIWISA HIGH VOLTAGE CURRENT-LIMITING FUSES HIGH INTERRUPTING CAPACITY INDOOR AND OUTDOOR USE According to the above mentioned, the uniform distribution of the voltaic arc and the resulting voltage of the fuse operation is assured. The high interrupting capacity and the rated current wide range available, are mainly the result of these design features which allow the dissipation of the thermic energy generated during the fusion and/or evaporation process in a uniformly distributed shape. The fuse is filled with silica sand of specific granulometry and formulation, thus providing the proper environment for voltaic arc cooling and quenching through the absorption and dissipation of the generated heat and condensation and solidification of the evaporated metal. DW-2009 DRIWISA fuse before and after a short-circuit current interruption Figure 2 shows a fuse after it has operated, where the melted strip elements in each chamber, uniformly distributed and parts of intact strips in the transition points from one chamber to another can be seen. The voltaic arc starts in the middle of each chamber where the thicker melted elements are found. They become thinner at the same time as they get closer to the walls that separate one chamber from another, showing the interrupting characteristic in a distributed shape. Intact strip residues at the transition points indicate the availability of an additional fuse interrupting capacity. Fuse ends have silver coated electrolitic copper caps which are connected inside to the silver strips ends. DRS and DRS...F types have a mechanic indicator which operates through a stored energy system in a preloaded spring mechanism with a striker pin that emerges by one fuse end when the fuse blows out with a force of 120 N (12 Kg-force) and a travel of 35 mm. In accordance with IEC standard classifications, the striker pin features of DRIWISA fuses place it as heavy duty (strong) type. Exhaustive tests have demonstrated that it is capable of activating the DRIWISA disconnector switch quick make mechanisms even in critical conditions, such as a blocked mechanism after a long period of time without operation, overcoming friction and resistance caused by the presence of dust, dirtiness, rust on hinges or lack of lubrication. Figure 3 shows the mechanic indicator force-displacement characteristic. HIGH VOLTAGE EQUIPMENT MANUFACTURERS SAN LUIS TLATILCO Nº 29 PARQUE INDUSTRIAL NAUCALPAN, C.P.53470 NAUCALPAN, EDO. DE MEX. TEL. (5255) 5300 8219, (5255) 5300 0210 FAX (5255) 5301 3707 EDITION 2003 H-7

DRIWISA HIGH VOLTAGE CURRENT-LIMITING FUSES HIGH INTERRUPTING CAPACITY INDOOR AND OUTDOOR USE FIGURE 3 DRIWISA fuse before and after a short-circuit current interruption DRIWISA fuses work satisfactorily in any mounting position. In every case epoxy-resin is used as a seal between the caps and the porcelain tube, to assure great resistance and long life sealing, waterproof and resistant to most severe and extreme atmospheric conditions. For outdoor fuses, additionally a special welding between the caps and porcelain tube is used to offer an optimum sealing. At facilities with high degree of humidity, coastal, tropic or rainy zones, it is recommended to use outdoor fuses (type DRS...F) even when installed in interiors. In regard to their electrical, dimensional and mechanical characteristics (diameters, lenghts, striker pin operation force, etc) DRIWISA fuses are manufactured in accordance with international standards. For further details, consult the catalog Selection Guide (Section I) which contains the specifications and mechanical and electrical data. OPERATION: OPERATION PRINCIPLE: When a short-circuit condition occurs in an electric network, very appreciable thermic and dynamic effects are produced because of the high current values. The interruption of these currents in the shortest time possible is very important, since the damages produced by overheating of conducting parts and by dynamic stresses must be avoided or at least minimized. Current-limiting and high interrupting capacity fuses are used as protection against short-circuit currents. The importance falls on the current-limiting effect, which is the fuse capacity to interrupt a short-circuit current before it reaches its maximum peak value by limiting the value of I D to the breaking current or fusion current I S. This is considerably less than the non-limited short-circuit current (prospective current) I k " shown in Figure 4 with a dotted line and which corresponds to the short-circuit current available at the point where the fault occurs. Figure 4 shows the current and voltage behavior during a short-circuit current and the interrupting process. HIGH VOLTAGE EQUIPMENT MANUFACTURERS SAN LUIS TLATILCO Nº 29 PARQUE INDUSTRIAL NAUCALPAN, C.P.53470 NAUCALPAN, EDO. DE MEX. TEL. (5255) 5300 8219, (5255) 5300 0210 FAX (5255) 5301 3707 EDITION 2003 H-8

DRIWISA HIGH VOLTAGE CURRENT-LIMITING FUSES HIGH INTERRUPTING CAPACITY INDOOR AND OUTDOOR USE I k " I S I D I D = I S t S t L short-circuit prospective current (in case that fuse does not exist) (rms value) fusion current (peak value) let-through current (peak value) short-circuit current limited by the fuse prearcing time (fusion time) arcing time FIGURE 4 Short-circuit current interrupting process in a current-limiting fuse When the short-circuit begins, a minimum resistance opposes the flow of the current I D thus increasing at the same time the current I k " and starting the temperature elevation process in the fuse link (silver strips). When they reach the I S value, (fuse breaking current or fusion current) the fuse link melts and/or evaporates and interrupts the circuits on several points, with multiple voltaic arcs showing up, whose length increases quickly with the material melting and/or evaporating. Voltage increases rapidly from the moment of the fusion, reaching a maximum (interruption voltage) and the current is limited to the I S value. At this moment a current decreasing process begins. The limiting process is therefore the result of the insertion of the voltaic arcs resistance at several points from the fusion. When arcs turn cold by effect of the surrounding sand consequently the conductivity is reduced and therefore, the resistance to the current flow increases quickly. The current decreases gradually at the same time as the voltage. Near to the next pass through voltage zero, the voltaic arcs are extinguished and the current remains totally interrupted. The described events occur within the first half cycle of the short-circuit current, meaning, in less than 8 to 10 milliseconds. Formation of multiple voltaic arcs at the fuse length as a consecuence of DRIWISA fuses special design gives a uniform voltage distribution as result as well as of and the great amount of energy (heat) produced during this short process, thus preventing the posibility of arc reignition. HIGH VOLTAGE EQUIPMENT MANUFACTURERS SAN LUIS TLATILCO Nº 29 PARQUE INDUSTRIAL NAUCALPAN, C.P.53470 NAUCALPAN, EDO. DE MEX. TEL. (5255) 5300 8219, (5255) 5300 0210 FAX (5255) 5301 3707 EDITION 2003 H-9

DRIWISA HIGH VOLTAGE CURRENT-LIMITING FUSES HIGH INTERRUPTING CAPACITY INDOOR AND OUTDOOR USE Figure 5 shows DRIWISA current-limiting fuses characteristic indicating the let-through current maximum value I D (equal to the fusion current I S ) with regard to the prospective short-circuit current rms value ( I k " ) for fuses from 6 to 500 A. FIGURE 5 Maximum let-through current I D refered to the short-circuit prospective current I k " Line A-A' represents the maximum asymmetrical peak current that would show up in the circuit for every value of the symmetrical short-circuit prospective current I k " (rms value) in case a fuse would not exist. The value of 1.8 x 2 corresponds to the maximum asymmetric value possible in the network for the first phase to interrupt, which represents the most critical condition. The lines corresponding to every fuse rated current show the maximum let-through current I D (which corresponds to the fusion current I S ) in relation to the short-circuit prospective current I k " (rms value). For example, for a short-circuit prospective current of I k " = 20 ka rms a let-through current I D = 1.8 x 2 x 20 ka = 50.9 ka peak would show in case a currentlimiting fuse would not exist. With a 32 A fuse this value is limited to only I D = I S = 4 ka peak within an operation time lower than 10 milliseconds (figure 7). It is obvious that for low currents, for which the fusion time is long (including times over one cycle) the fuse does not act as a current-limiting fuse. Fuses will show their current-limiting characteristic only from a current value where I Dpeak is the same as I S. Starting at this level of current, the fuse will operate as a current-limiting fuse (on the right side of the A-A' line in Figure 5). The point where the line corresponding to I S of every fuse meets with the A-A' straight line, defines over the abscissa (X axis) the short-circuit current value as of which the fuse operates as current-limiting. If the short-circuit current is lower, the fuse will not operate as a current-limiting one. For example, a 75A fuse will operate as a current-limiting fuse as of approximately 2000 A of short-circuit. HIGH VOLTAGE EQUIPMENT MANUFACTURERS SAN LUIS TLATILCO Nº 29 PARQUE INDUSTRIAL NAUCALPAN, C.P.53470 NAUCALPAN, EDO. DE MEX. TEL. (5255) 5300 8219, (5255) 5300 0210 FAX (5255) 5301 3707 EDITION 2003 H-10

DRIWISA HIGH VOLTAGE CURRENT-LIMITING FUSES HIGH INTERRUPTING CAPACITY INDOOR AND OUTDOOR USE RATED CURRENT (I n ): The fuse rated current is the maximum current value that the fuse can conduct for indefinite time without reaching fusion and the one to generate an energy such as the fuse can satisfactorily dissipate. INTERRUPTING CAPACITY ( I 1 ) (MAXIMUM INTERRUPTING CURRENT) : The interrupting capacity (maximum interrupting current) I 1 corresponds to the maximum short-circuit current that a fuse is capable of interrupting safely lying of the neighborhood of several tenths of ka. The interrupting capacity (maximum interrupting current) of DRIWISA fuses lies above the short-circuit currents usually available in electric networks. Nevertheless it is recommended to verify the short-circuit current of the network when selecting a fuse. The corresponding Selection Guides specify the maximum interrupting current and the interrupting capacity (MVA) for each type of fuse. When the short-circuit power instead of the short-circuit current is specified, the ratio between them is deduced from the following formula: MINIMUM INTERRUPTING CURRENT ( I 3 ): P short-circuit = kv net x kashort-circuit x 3 For values above I n fusion times are very long and they decrease at the same time the current increases (Figure 6). In this range, heat dissipation capacity is lower than the amount of heat generated inside. Therefore severe thermic stresses that may damage the fuse show up. While the current increases, the fusion times are reduced, until a point is reached where the fusion occurs in a relatively short time, before thermic stresses and damages to the fuse show up. This current value is called the minimum interrupting current I3 and corresponds to the lower limit of current ranges that the fuse may satisfactorily interrupt. FIGURE 6 Characteristic time-current curves for current-limiting fuses Considering the above, time-current curves define a minimum interrupting current value ( I 3 ) for each fuse type, below which an operation during a long period of time is not recommended, since the current (overcurrent) does not have the magnitude high enough to produce fusion, but produces an excessive heating, modifying the fuse links characteristics and producing thermic damages to the fuse body. Therefore current-limiting fuses must not operate during long periods of time in the range of currents higher than the rated one ( In ) and lower to the minimum interrupting current ( I 3 ). However, in case of high currents ( higher to I 3 ), that is within the short-circuit current range, the fuse operation is quick, defined and predictible. Figure 7 shows - in a graphic way - the different fuse operation zones and the conditions and limitations of each one. HIGH VOLTAGE EQUIPMENT MANUFACTURERS SAN LUIS TLATILCO Nº 29 PARQUE INDUSTRIAL NAUCALPAN, C.P.53470 NAUCALPAN, EDO. DE MEX. TEL. (5255) 5300 8219, (5255) 5300 0210 FAX (5255) 5301 3707 EDITION 2003 H-11

DRIWISA HIGH VOLTAGE CURRENT-LIMITING FUSES HIGH INTERRUPTING CAPACITY INDOOR AND OUTDOOR USE Even though the fusion process is based on known physical principles and laws, when currents higher than I n (overcurrents) show up during a time greater than the reply time corresponding to I 3 (t I3 ) or overcurrents of an intermittent type, there are difficulties in analysing and evaluating, because the behavior of the fuse will depend on their magnitude and duration, as well as on the periods between these overcurrents, during which the fuse is able to return to a normal regime or even to the cool condition. If an overcurrent lasts a relatively long time and then stops, it can start fusion or reach the amalgamating condition with a rise in temperature because of energy disipation during that period of time, changing in a significant way the fuse links characteristics. When later found subject to a new overcurrent regime or shortcircuit, the fuses will react in a different way as to the standard characteristic, producing first heatings or inexplicable interruptions and then a reaction completely out of specification. Consulting Figures 8 and 9 which show DRIWISA fuses time-current characteristic for the range of available rated currents in the manufacturing program, it can be seen that the minimum interrupting current I 3 (begining at the dotted line) for fuses with rated currents up to 63 A, is about 2.5 times higher than the fuse rated current I n. For rated currents larger than 63 A, the minimum interrupting current I 3 is about 3 times the fuse rated current I n, while for fuse rated currents of 200 A and higher it corresponds to 4 times the rated current I n. RATED CURRENT SELECTION ( I n ): To avoid fuse operation within the overload range, the fuse rated current I n is selected with an overdimensioned factor according to the equipment to protect, which for example, in case of transformers lies between 1.6 and 2 times the circuit rated current. This way the fuse will be able to hold up with the magnetization currents (inrush) and even if the transformer works within an overload regime, the fuse will not be exposed to such, due to the transformer higher thermic capacity. Appling this factor it will be possible to coordinate protection with other devices such as overcurrent relays, phase fault relays and protection elements on the low voltage side, for example, fuses, thermomagnetic switches and other protections. Any current higher than I 3, will be interrupted in a time no longer than 10 to 100 sec., according to the corresponding curve in Figures 8 and 9. For further information regarding transformer protection, refer to Technical Bulletin 201. In regard to motor protection similar criteria are followed as described in Technical Bulletin 202, while capacitor protection is explained in Bulletin 203. For overhead lines or underground cables it is reccomended to consult Bulletin 204. TIME-CURRENT CHARACTERISTIC CURVES: FIGURE 7 Current-limiting fuses operation zones Graphics in Figures 8 and 9 correspond to DRIWISA fuses time-current performance and represent the response curves under cool condition, without previous load (preloading), at surrounding temperature of 20 C, with a tolerance margin of + 20%, for operating times larger than 0.01 sec. Graphics in Figure 10 correspond to the I 2 t characteristic (Joule integral) applicable for operating times lower than 0.1 sec. HIGH VOLTAGE EQUIPMENT MANUFACTURERS SAN LUIS TLATILCO Nº 29 PARQUE INDUSTRIAL NAUCALPAN, C.P.53470 NAUCALPAN, EDO. DE MEX. TEL. (5255) 5300 8219, (5255) 5300 0210 FAX (5255) 5301 3707 EDITION 2003 H-12

DRIWISA HIGH VOLTAGE CURRENT-LIMITING FUSES HIGH INTERRUPTING CAPACITY INDOOR AND OUTDOOR USE The tight tolerance in the fuse links lineal resistance and a strict quality assurance during the manufacturing process guarantee the characteristic curves repeatibility. Applying the overdimensioning factors and following the selection criteria in agreement with the different applications, there is little probability of overloading of the fuse due to values lying above the rated current I n to occur. However, in accordance with the knowledge of the net, if the risk probability is high, the protection against overloads with currents larger than I n but smaller than I 3 during longer periods of time, should be provided by other means, such as overcurrent relays connected to disconnection devices like switches or load-break disconnectors. For further details consult Technical Bulletin 302. The oscillogram in Figure 11 shows the current characteristic performance and the voltage during a short-circuit interruption when a DRIWISA fuse type DRS07/100-A2 with 12 kv rated voltage and 100 A rated current subjected to a short-circuit prospective current of I k " = 63 ka rms is used. The current-limiting effect can be deduced when observing that the maximum let-through current I D reaches a value of 15 ka peak corresponding to the fuse fusion current I S, while the current that would have flown in the test circuit, replacing the fuse by a very low resistance conductor, would have reached a value of 160.5 ka peak of the maximum asymmetrical peak current ( 1.8 x 2 x 63 A = 160.5 ka peak ). Ve I P I D I D = I S Recovery voltage Short-circuit prospective current (rms value) Maximum let-trough current Breaking curent (fusion current) FIGURE 11 Interruption of a 63 ka rms short-circuit current when a fuse type DRS07/100-A2 is used In accordance with international standards, recovery voltage at a system frecuency (V e ) is 87% of the fuse maximum rated voltage (V O ). Therefore, in the example shown in Figure 11 the result is: V e = 0.87 x V o = 0.87 x 12 kv = 10.5 kv HIGH VOLTAGE EQUIPMENT MANUFACTURERS SAN LUIS TLATILCO Nº 29 PARQUE INDUSTRIAL NAUCALPAN, C.P.53470 NAUCALPAN, EDO. DE MEX. TEL. (5255) 5300 8219, (5255) 5300 0210 FAX (5255) 5301 3707 EDITION 2003 H-16

DRIWISA HIGH VOLTAGE CURRENT-LIMITING FUSES HIGH INTERRUPTING CAPACITY INDOOR AND OUTDOOR USE OPERATION VOLTAGE ( V n ): The interrupting voltage or maneuver voltage generated during the arc extintion process, by inserting its high resistance and interrupting currents with a high grade of inductance, is of special interest. Transient voltage during interruption must not exceed the insulation levels, usually coordinated in the network, since it would provoke trouble mainly at the insulation of other components of the system, among others, at arresters placed on the line side. For this reason it is important to use fuses with a rated voltage in agreement to the network voltage. When using a fuse with less rated voltage in regard to the network voltage, problems to manage the voltage gradients will present, while using one with greater rated voltage and consequently greater interruption voltage would cause a higher voltage gradient and consequently would create problems with the insulation of other equipments in the system. In multiple tests accomplished on DRIWISA fuses, the highest arc interruption voltage value found was of V U = 1.95 x 2 x V O = 2.76 x V O. This value is considerably lower than those admitted by the standards (Table 2). Consequently, using fuses with rated voltages corresponding to network voltages, there is no danger of provoking damages to the insulation of equipments connected to the load side, such as transformers, switches, substations, motors, etc. and avoiding the arresters operation. Table 2 lists the maximum arc interruption voltages admissible for high voltage fuses in accordance with international standards. FUSE RATED SYSTEM RATED MAXIMUM MANEUVER VOLTAGE VOLTAGE (MEXICO) VOLTAGE ❶ kv rms kv rms kv peak 2.75 2.4 9 3.6 ----- 12 5.5 4.16 18 7.2 6.6 23 8.25 ----- 26 12 ----- 38 15 13.8 47 15.5 ----- 49 17.5 ----- 55 24 23 75 25.8 ----- 81 36 34.5 112 38 ----- 119 ❶ Also defined as maximum interruption voltage TABLE 2 Maximum interruption voltage levels corresponding to the fuses rated voltage DRIWISA fuses can be installed in three-phase networks whose service voltage does not exceed the fuse rated voltage. In one-phase networks the service voltage must not be larger as 87% of the fuse rated voltage. In other cases, fuse voltage selection must be such that the maximum interruption voltage (maneuver voltage) does not exceed the maximum voltages established for the network (see Table 2). APPLICATION WITH LOAD-BREAK DISCONNECTOR SWITCHES: Using current-limiting fuses in combination with DRIWISA load-break disconnector switches, three-phase group operated with automatic and auxilliary trip type LDTP, an economical and reliable connection and disconnection equipment is obtained. In this case, minimum interrupting current values I 3 may be considered lower ( from 1.8 to 2 times the fuse rated current I n ). This is because of the premature reply of the fuse striker pin, which in case of being used within load-break switches, provokes the tripping of the auxilliary mechanism and the simultaneous opening of the three phases. HIGH VOLTAGE EQUIPMENT MANUFACTURERS SAN LUIS TLATILCO Nº 29 PARQUE INDUSTRIAL NAUCALPAN, C.P.53470 NAUCALPAN, EDO. DE MEX. TEL. (5255) 5300 8219, (5255) 5300 0210 FAX (5255) 5301 3707 EDITION 2003 H-17

DRIWISA HIGH VOLTAGE CURRENT-LIMITING FUSES HIGH INTERRUPTING CAPACITY INDOOR AND OUTDOOR USE This way, when the first fuse acts, the disconnector switch operates opening the three poles, interrupting the current of the remaining phases that otherwise would not have been interrupted but until the respectives fuses had acted maybe after several minutes or even hours, subjecting them to thermic stresses and eventually producing damages to the protected equipment, also preventing a two-phase operation. During the interruption of the remaining phases, the disconnector switch is not subject to large stresses because it just has to interrupt the rated load current of the net voltage. In case that some of the other fuses would have started its fusion process, the disconnector switch will only have to deal with the small arcing currents, thus remaining the fault disconnected and isolated. In accordance with international standards, for the extreme condition of operating an unfused load-break switch an inductive power factor = 0.7 (cos φ = 0.7) is specified. However, under short-circuit conditions at the transformer secundary terminals for instance, the value of cos f can be considerably lower, around 0.1. Nevertheless when using a combination of fuses with a DRIWISA load-break switch disconnector, this last will just have to disconnect a much lower current value due to the fuse current-limiting characteristic and with a power factor within its rated range, thanks to the high arc resistance of the fuse. The utilization of fuses with striker pin in combination with load-break disconnector switches is recommended for its excellent features and behavior in case of short-circuits at transformer secundary terminals. This is the reason why many electric utilities around the world use and specify DRIWISA fuses with striker pin to operate within three-pole load-break disconnector switches. ADVANTAGES: DRIWISA high interrupting capacity fuses guarantee a safe operation even for networks with a high short-circuit power. Their current-limiting characteristic guarantees the reduction to a minimum of damages to the network and other equipments, that could originate because of dangerous short-circuit currents dynamic and thermic effects. Because of their relatively slow time-current characteristic, DRIWISA fuses used for transformer or motor protection do not show untimely fusion or fuse link degradation if they are selected accordingt to the corresponding recommendations. Fuses are sealed with epoxy resin to achieve great airtightness against humidity. For outdoor use fuses, a special welding between covers and caps is used in order to offer a perfect protection against humidity. Costs savings when the same fuses can be used in networks that have increased their short-circuit power. DRIWISA fuses are recyclable and can be repaired with the original manufacturer guarantee by DRIESCHER Y WITTJOHANN, S.A. DRIWISA fuses are manufactured in a wide range of operation currents and voltages to satisfy any necessity. DRIWISA fuses are standardized in dimensions which makes the selection and replacement easy. USE AND HANDLING PRECAUTIONS: The following precautions must be taken into consideration when handling and using fuses: - Water or humidity must not penetrate into the fuse, since the high temperatures that are reached when fusion takes place, will provoke the abrupt generation of steam which causes the possibility of an explosion. - Handling fuses with precaution, avoid breakage of the porcelain and the caps to get dented. If this happens, DO NOT USE THE FUSE, AS SERIOUS RISK OF DAMAGES, HAZARDS OR INJURIES MAY OCCUR. - Fuse copper caps are silver-plated to give them excellent conductivity and assure a good electric contact. DO NOT USE SANDPAPER OR FIBER TO CLEAN THE CAPS IF THEY ARE DIRTY OR IF THEY HAVE TURNED BLACK, since this does not affect their electric conductivity features. Use a soft cloth lightly wet with silver cleaning solution not containing any abrasive or agressive materials. - Do not place metallic or metallized labels on the fuse body, since this may provoke an external flashover, as the dielectric distance along the air between the caps is reduced. - Fuse repair or rehabilitation must be done by skilled and responsible personnel; they must know about the operation principles and electrical phenomena, and must have the technical ability, skills, equipment and technology to perform these activities. DRIWISA fuses can be repaired renewing their original guarantee only by DRIESCHER Y WITTJOHANN, S.A. or they can be exchanged through Authorized Distributors or Service Centers. - When buying or repairing fuses, consider the equipment, installations and personnel value they are protecting and remember that "THE CHEAPEST MAY BE THE MOST EXPENSIVE". Entrust your installations and personal safety to DRIWISA fuses. - Even when just one fuse had operated after a short-circuit condition in a three-phase system, it is necessary and very advisable to replace the set of three fuses since the unblown fuses may have inside damage if the fusion process (pre-arcing) had begun, this will cause later problems such as inexplicable temperature rise or undesirable interruption. This recommendation is also contained in international standards. HIGH VOLTAGE EQUIPMENT MANUFACTURERS SAN LUIS TLATILCO Nº 29 PARQUE INDUSTRIAL NAUCALPAN, C.P.53470 NAUCALPAN, EDO. DE MEX. TEL. (5255) 5300 8219, (5255) 5300 0210 FAX (5255) 5301 3707 EDITION 2003 H-18

DRIWISA HIGH VOLTAGE CURRENT-LIMITING FUSES HIGH INTERRUPTING CAPACITY INDOOR AND OUTDOOR USE TRANSPORTATION AND STORAGE: During transport of DRIWISA fuses avoid strikes that can break or crack the porcelain fuse body or dent the caps. In case of indoor service fuses, do not allow them to get wet or to stay in humid enviroments to avoid the penetration of moist. When receiving new fuses, inspect them before storage, informing the Authorized Distributor or the factory of any problem. Fuse storage must be done in a closed, cool and dry place. Do not store them in places where there are vibrations, moist or pollution. Keep the fuses inside their original package on a shelf in order to be safe against falling and do not stack more than 5 boxes. MAINTENANCE: DRIWISA high voltage and high interrupting capacity fuses do not require any maintenance. However it is recommended that after the fuse operation in a three-phase system, to replace the set of three, even when only one fuse has blown, since the others could have been subjected to thermic stresses that may caused them damages and then cause later problems such as inexplicable temperature rise or unexpected interruptions without any suitable cause. In cases of high or prolonged overloading in the circuit protected by fuses, it is recommended these being verified as to its features in factory or with any Authorized Distributor or Service Center besides to have been subjected to overcurrent, they may have suffered irreversible thermic damages that modify and demote its original characteristics. It is advisable in all cases to be equipped with a set of at least 3 fuses as spare for emergency cases. These fuses must be of the same characteristics to those installed. Keep them following the instructions given in the section "transportation and storage". Fuse copper caps are silver-plated to give them excellent conductivity and assure a good electric contact. Do not use sandpaper or fiber to clean the caps if they are dirty or if they have turned black, since this does not affect their electric conductivity features. Use a soft cloth lightly wet with silver cleaning solution not containing any abrasive or agressive materials. Do not place metallic or metallized labels on the fuse body, since this may provoke an external flashover, as the dielectric distance along the air between the caps is reduced. Fuse repair or rehabilitation must be done by skilled and responsible personnel; they must know about the operation principles and electrical phenomenon, and must have the technical ability, skills, equipment and technology to perform these activities. DRIWISA fuses can be repaired renewing their original guarantee only by DRIESCHER Y WITTJOHANN, S.A. or they can be exchange through Authorized Distributors or Service Centers. INSTALLATION AND/OR REPLACEMENT: It is recommended to follow the following instructions when placing or replacing fuses: A) ACCOMPLISH THE SAFETY PREPARATIONS: 1) Use special pliers for the handling of high voltage fuses ( brand DRIWISA type DW-018) 2) Use insulating gloves properly guaranteed for use in high voltage. 3) Use a headpiece made of insulating material. 4) Have ready cable, hook stick and equipment to connect to ground. 5) Have ready a sand bed where fuses can be placed. 6) In front of the equipment which contains the fuses, place an insulating platform for high voltage or a wood platform with an insulating rug and stay above it all the time the operation lasts, even more if the environment is humid. 7) If working in branch circuits or remote substations, place placards in the main substation or switch where it let knows that someone is working there "DO NOT CONNECT" " MEN WORKING...". B) THINK FIRST AND THEN ACT, remember that when working with high voltage, the FIRST MISTAKE may be THE LAST ONE. 8) Disconnect the high voltage supply: 8.1) Be sure that the main load-break disconnector or main switch is open. If not, open it. 8.2) Open the non load-break isolator. 8.3) Connect the ground switch ( in case of having this kind of equipment). 9) Open the door cabinet; stay strategically where the door does not hit you, nor get projections from inside. HIGH VOLTAGE EQUIPMENT MANUFACTURERS SAN LUIS TLATILCO Nº 29 PARQUE INDUSTRIAL NAUCALPAN, C.P.53470 NAUCALPAN, EDO. DE MEX. TEL. (5255) 5300 8219, (5255) 5300 0210 FAX (5255) 5301 3707 EDITION 2003 H-19

DRIWISA HIGH VOLTAGE CURRENT-LIMITING FUSES HIGH INTERRUPTING CAPACITY INDOOR AND OUTDOOR USE PRECAUTION: FUSES MAY REACH HIGH TEMPERATURES SO THAT WHEN THE CABINET DOOR IS OPENED, THEY CAN RECEIVE A THERMAL IMPACT, THAT MAY CRASH AND/OR MAKE EXPLODE THE PORCELAIN TUBE. THEREFORE LET THE FRESH AIR ENTER SLOWLY. 10) Connect the ground cable; use the correct size of cable and a hook stick. Connect it first to the substation or switchgear ground bus or grounding structures and then to the phases (in case of not having a ground switch integrated to the equipment). 11) Find out and determine the cause that made the fuse blow, it can be a short-circuit or an overload. Eliminate the trouble, remove the remains and make a general cleaning. 12) Verify the condition of equipment and installations. 13) Inspect the new fuses and make sure they do not show maltreatment, cracks or fissures, check that the porcelain tube is not broken, grooved or scratched, nor the caps are dented or plunged. If some things mentioned before would happen, do not use them since their use is very risky. Verify that the fuse striker pin is brought back and is in its place. ) Fuse copper caps are silver-plated to give them excellent conductivity and assure a good electric contact. DO NOT USE SANDPAPER OR FIBER TO CLEAN THE CAPS IF THEY ARE DIRTY OR IF THEY HAVE TURNED BLACK, since this does not affect their electric conductivity features. Use a soft cloth lightly wet with silver cleaning solution not containing any abrasive or agressive materials. Do not place metallic or metallized labels on the fuse body, since this may provoke an external flashover, as the dielectric distance along the air between the caps is reduced. 15) Remove the old fuses with pliers DW-018 and replace them for DRIWISA fuses of the same characteristics: Type, rated voltage and rated current. Never use fuses of different brands in the same circuit or different type, rated voltage or current even if they're of the same brand, since their characteristics are not the same. In three-phase systems it is recommended to replace the set of three fuses even when only one had blown since the others may be damaged and cause problems later. PRECAUTION: FUSES MAY STAY HOT, PLACE THEM ON THE SAND BED, LETTING ENOUGH TIME PASS BEFORE TOUCHING THEM WITH BARE HANDS. 16) If the fuses are installed in load-break disconnectors, verify the operation of the auxiliary trip mechanism. 17) Place the new fuses carefully, making sure the clips assemblies make the proper contact with the fuse caps. When inserting the fuses in the clip assemblies, make pressure on the ends and not on the middle of the fuse. Do not hit the fuse. 18) Remove all the tools that have been used and verify that are complete and it has not stayed behind anything inside the cabinet. 19) Disconnect the grounding switch or the ground connections, wherever it is the case. 20) Close the cabinet door, connect the non-load isolator switch and connect the high voltage supply. 21) Replace damaged fuses for new fuses, of the same rated voltage and current. In some cases, when the fuse operation is because of overloads, verify the load calculations and if necessary ask for three new fuses at the adecuate rated current according to the new calculation. DRIWISA fuses can be repaired including their original guarantee only by DRIESCHER Y WITTJOHANN, S.A. or they can be exchanged through Authorized Distributors or Service Centers. Fuse repair or rehabilitation must be done by skilled and responsible personnel; they must know about the operation principles and electric phenomena, and must have the technical ability, skills, equipment and technology to perform these activities. Do not expose installations, equipments and own security. SELECTION: When selecting current-limiting fuses always consider the following factors: - Network rated voltage - Interrupting capacity - Installation altitude - Fuse rated current, according to application - Coordination with other protections - Type of service (indoor or outdoor) - Dimensions - Availability of spare, service and technical assistance - Security and reliability : always use DRIWISA fuses HIGH VOLTAGE EQUIPMENT MANUFACTURERS SAN LUIS TLATILCO Nº 29 PARQUE INDUSTRIAL NAUCALPAN, C.P.53470 NAUCALPAN, EDO. DE MEX. TEL. (5255) 5300 8219, (5255) 5300 0210 FAX (5255) 5301 3707 EDITION 2003 H-20

DRIWISA HIGH VOLTAGE CURRENT-LIMITING FUSES HIGH INTERRUPTING CAPACITY INDOOR AND OUTDOOR USE Fuse selection must be done in agreement to the equipment to protect, since the selection criteria are different for each application. For further information consult additionally the following information which is included in section J: TECHNICAL BULLETIN No. C O N T E N T S 201 Recommendations for protection with current-limiting fuses: TRANSFORMERS. 202 Recommendations for protection with current-limiting fuses: MOTORS. 203 Recommendations for protection with current-limiting fuses: CAPACITORS. 204 Recommendations for protection with current-limiting fuses: OVERHEAD LINES AND CABLE FEEDERS. 205 Considerations and criteria for the parallel-connection of fuses (two-per phase arrangement). 206 Equivalency between DRIWISA fuses and american fuses type "R" and "E". 302 Shunt-trip coil for electrical remote control. 304 Selection of non-load break isolator switches and load-break disconnector switches with fuse-holders. Selectivity and coordination of protections is reached by keeping a rate of 1 : 1.6 between fuse rated currents, being the smallest the one connected closest to the load and the biggest the one connected from the supply side, assuring this way that the smallest blow first, interrupting and isolating the fault. In case of transformer protection, to establish selectivity and coordination with protections on the low voltage side it is necessary to refer to the high voltage fuses time-current characteristic curves and to the curves of the devices and/or fuses of the low voltage side (for further information refer to Technical Bulletin 201). Sometimes, for big transformer protection, it is necessary to appeal to a two-per-phase fuse arrangement to reach the required rated current value. For these cases it is recommended to consult Technical Bulletin 205 before deciding on this arrangement. For motor protection it is required to know the starting time, the maximum starting current, and the motor startings frecuency to select the correct fuse. It is recommended to consult Technical Bulletin 202. Capacitor and capacitor-bank protection invest special importance, because of the increasing use they have to keep the power factor within the acceptable limits and the relative rank of difficulty for its adequate protection, since connection currents reach, in many cases, levels very close to those of short-circuit. For further information consult Technical Bulletin 203. For fuse selection for overhead lines and cable feeders, the selection criteria are described in Technical Bulletin 204, considering that it must be done in function of the transversal section and the admissible current in the conductor. In the fuse selection for networks and circuits with high probabilities of long duration or high overloadings which require therefore of fuses with high currents rates, it is reminded that these must be used for protection against short-circuits and not for protection against overloading. Requeriments for specific arrangements in networks have to be calculated in detail by the customer to control and/or verify the continuous load regime over the fuses, the interruption current, and the fuse interrupting capacity. All data corresponding to voltage, current, interrupting capacity given in this Manual and/or Selection Guides of Catalogs, Technical Bulletins, etc., are refered to installation heights up to 1000 m over sea level and an enviroment temperature up to 40 C. In any way, once selected the correct fuse for its application, consider the installation altitude correction factors included in Table 3, in the fuse rated current as in the interrupting capacity and rated voltage reduction. If it is calculated with the correction by altitude in the rated current, do not use the temperature rising correction and viceversa. In some cases, a temperature correction factor should be additionally considered, in those cases in which the fuses are installed inside of cabinets or switchboards with little ventilation and/or high temperatures, in accordance with Table 4. When there exist several sizes of fuses for a specific rate of current, it is advisable to consider the future installation growth (greater rated current) or the increase of short-circuit capacity, this means to verify if for the selected fuse size exist larger rated currents or interrupting capacities, in such a way that when selecting them it is chosen a size that allows to increase the capacity, by means of just changing fuses by others of greater current or interrupting capacity when this growth requires it. Bulletin 206 establishes equivalency criteria between american fuses curves type "R" y "E" and DRIWISA fuses curves. Fuses must have a rated voltage equal or greater to the system highest voltage between phases, when they are used in three-phase systems with neutral firmly grounded or with neutral connected through an impedance or resistance. When using fuses in systems with isolated neutral (not grounded), the rated voltage should be at least 1.15 times the system highest voltage between phases. When fuses are used in one-phase systems, its rated voltage should be at least 1.15 times greater than the voltage between phase and ground. HIGH VOLTAGE EQUIPMENT MANUFACTURERS SAN LUIS TLATILCO Nº 29 PARQUE INDUSTRIAL NAUCALPAN, C.P.53470 NAUCALPAN, EDO. DE MEX. TEL. (5255) 5300 8219, (5255) 5300 0210 FAX (5255) 5301 3707 EDITION 2003 H-21

DRIWISA HIGH VOLTAGE CURRENT-LIMITING FUSES HIGH INTERRUPTING CAPACITY INDOOR AND OUTDOOR USE CORRECTION FACTORS BY INSTALLATION ALTITUDE AND TEMPERATURE: Installation altitude Correction factor Correction factor Correction factor (meters over sea level) for rated current for voltage and for temperature interrupting capacity rising 0 a 1000 1.00 1.00 1.000 1000 a 1200 0.995 0.98 0.992 1200 a 1500 0.990 0.95 0.980 1500 a 1800 0.985 0.92 0.968 1800 a 2100 0.980 0.89 0.956 2100 a 2400 0.970 0.86 0.944 2400 a 2700 0.965 0.83 0.932 2700 a 3000 0.960 0.80 0.920 3000 a 3600 0.950 0.75 0.896 3600 a 4200 0.935 0.70 0.872 TABLE 3 Correction factors by altitude according to international standards Operation Correction factor Temperature for fusion time ( C ) - 20 a - 10 1.03-10 a 0 1.02 0 a + 10 1.01 + 10 a + 20 1.01 + 20 a + 30 1.00 + 30 a + 40 0.99 + 40 a + 50 0.98 + 50 a + 60 0.98 TABLE 4 Correction factors by temperature DRIWISA fuses are manufactured in a range from 2.4 to 38 kv in series DRS, DRN, and DRK, in lenghts in agreement to voltage level and dimensions in ccordance with international standards, as described in Figures and Tables of the Selection Guide of Section I, and they are used in combination with load-break fused disconnector switches and fuse-holders. The more common use is for transformers, motors, capacitors, potential transformers, overhead lines and feeder cables protection in substations and for medium and high voltage (2.4 kv up to 38 kv) industrial, rural and urban applications. NOTES: Selection criteria, calculation factors and electric and mechanical data, are included in this manual, Technical Bulletins of reference and Selection Guides and specifications, are exclusively for high interrupting capacity current-limiting DRIWISA fuses to be used in high voltage systems. Concepts and recommendations described in this manual should be considered and applied in agreement to the specific conditions of every case. When using similar fuses of other brands the corresponding data must be obtained or consulted with the respective manufacturer. HIGH VOLTAGE EQUIPMENT MANUFACTURERS SAN LUIS TLATILCO Nº 29 PARQUE INDUSTRIAL NAUCALPAN, C.P.53470 NAUCALPAN, EDO. DE MEX. TEL. (5255) 5300 8219, (5255) 5300 0210 FAX (5255) 5301 3707 EDITION 2003 H-22

DRIWISA HIGH VOLTAGE CURRENT-LIMITING FUSES HIGH INTERRUPTING CAPACITY INDOOR AND OUTDOOR USE COMPLEMENTARY INFORMATION FIGURE 12 Structure of DRIWISA information regarding current-limiting fuses and related subjects For further information contact: DRIESCHER Y WITTJOHANN, S.A. San Luis Tlatilco # 29 Parque Industrial Naucalpan 53470, Naucalpan, Edo. de México Tel: (525) 300-8219 300-0210 Fax: (525) 301-3707 e-mail: driwisa@df1.telmex.net.mx HIGH VOLTAGE EQUIPMENT MANUFACTURERS SAN LUIS TLATILCO Nº 29 PARQUE INDUSTRIAL NAUCALPAN, C.P.53470 NAUCALPAN, EDO. DE MEX. TEL. (5255) 5300 8219, (5255) 5300 0210 FAX (5255) 5301 3707 EDITION 2003 H-23

HV Expulsion cut-out fuselinks Specifications Voltage Rating: Speeds O/L Capacity 7.2-34.5kV K - fast T - slow 150% for both speeds Amp Range: 1-200A Approvals: complies with ANSI/NEMA Ratings: 1, 2, 3, 6, 8, 10, 12, 15, 20, 25, 30, 40, 50, 65, 70, 80, 100, 0, 200A Description Fusetek expulsion links are semi-enclosed buttonhead pattern fuse-links for use in standard expulsion distribution cut-outs. They are available in 'K' (fast) or 'T' (slow) speed and have industry standard, removeable button heads. Their braided leads are tin-plated copper and of sufficient length for the voltage ratings encountered in the field. Part Numbers Amps K Speed T Speed 1 CM1KA23 CM1TA23 2 CM2KA23 CM2TA23 3 CM3KA23 CM3TA23 6 CM6KA23 CM6TA23 8 CM8KA23 CM8TA23 10 CM10KA23 CM10TA23 12 CM12KA23 CM12TA23 15 CM15KA23 CM15TA23 20 CM20KA23 CM20TA23 25 CM25KA23 CM25TA23 30 CM30KA23 CM30TA23 40 CM40KA23 CM40TA23 50 CM50KA23 CM50TA23 65 CM65KA23 CM65TA23 80 CM80KA23 CM80TA23 100 CM100KA23 CM100TA23 0 CM0KA23 CM0TA23 200 CM200KA23 CM200TA23 1234567890123456789 < 23" 26" available as special order (change 23 to 26 in p/n) > pg 45

Delle Retrofit kits Fusetek adapter kits allow obsolete Delle Alsthom fuses to be upgraded to a standard DIN HV fuse. These kits are designed to replace all the hardware from the existing insulators up.! Upgrade obsolete equipment to modern DIN HV fuses.! Direct bolt-in replacement.! DIN fuses have superior electrical performance to fuses being replaced. Note: Adapter kits consist of 1 pair of 45mm fuse clips, transition plates and hardware. Fuses must be purchased seperately. See table below for fuse and adapter kit part numbers. If complete bases are required, please contact Fusetek. Adapter Kits for upgrading Delle Alsthom HV fuses Delle Fusetek Delle fuse part Adapter kit See amp range Service kv Fuse type number part number page FD3, 3M 6.3-320A 3.2/6.6 7.2kV Din series pg.21 FD4 6.3-125A 10/12 12kV Din series pg.22 FD5 6.3-125A 13.2/15 not req d 17.5kV Din series pg.23 FD6 6.3-100A 20/24 25.8kV Din series pg.24 FD7 6.3-50A 30/34.5 38kV Din series pg.25 FLR3 63-125A 6.6 FK102 7.2kV Din series pg.21 FLR5 63-125A 15 FK107 17.5kV Din series pg.23 FLP2 160-200A 5.5 250A 3.2 FK103 7.2kV Din series pg.21 FLP3 160-200A 6.6 250A 5.5 FK104 7.2kV Din series pg.21 FTR3 2-10A FK100 6.6 16-50A FK101 7.2kV Din series pg.21 2-10A FK105 FTR5 16-32A 15 FK106 17.5kV Din series pg.23 40-50A FK107 FTR6 FTR6 FTR7 2-10A FK106 15 16-50A FK107 2-10A FK106 20 16-50A FK107 2-10A FK111 20 16-50A FK112 17.5 kv Din series pg.23 25.8 kv Din series pg.24 25.8Kv Din series pg.24 2-10A FK108 FTR7 30 38kV Din series pg.25 16-50A FK109 FLR7 63-100A 25/30 FK110 38kV Din series pg.25 Delle replacement consists of one adapter kits (2 pair clips, adapter paltes and hardware) plus a DIN fuse. FD series Delle fuses are standard DIN distribution fuses and do not require an adapter kit. pg 46

HV Indicators DRIWISA voltage indicators emit a red glow to indicate presence of voltage in switchgear up to 38kV. They operate by capacitive effect, ionizating a gas inside a sealed tube. One end is connected to the live part and the path is completed through air. Standard model (photo) has articulated arm and dust hood. Economy model includes glow tube and mounting clips only.!#available in standard and economic models!#compact dimensions!#no maintenance required!#replaceable indicator tube. Part Numbers for HV Indicators System voltage Standard model Economy model 7.2kV DW-019-0 17.5kV DW-019-1 DW-019-10 25.8kV DW-019-2 DW-019-12 38kV DW-019-3 DW-019-13 HV Indicators for remote signaling Our microswitch assembly allow remote annuciation of fuse operation. It consists of an insulated Bowden cable operating a microswitch. On end of the cable in terminated in a bracket at the fuse end, the other terminating in a bracket that also houses the microswitch. The actuating force is provided by the fuse striker pin.!#provide remote annunciation of fuse operation (per phase.)!#easily adaptable to a variety of clip/fuse configurations.!#no maintenance required!#standard Form C NO/NC contacts. Insulation rating Max cable length up to 36kV 590mm Part Number 31 001 10 pg 47

Epoxy resin insulators In stock solutions for supported high voltage busbar, clips or other components. Hole pattern matches our 630A 45mm, clips shown on next page. RATED MAX. Cantilever No. Withstand Vac Vac Class Strength of fins Vac 60 Hz B.I.L TYPE MODEL kv KV N kv(1min) kv A DWA-07A 6.6 7.2 4 4000 1 27 60 A DWA-15A 13.8 17.5 4 4000 4 45 95 A DWA-20A 23 25.8 4 4000 5 55 125 A DWA 30A 34.5 38 4 4000 9 75 150 B DWA-07B 6.6 7.2 8 8000 1 27 60 B DWA-15B 13.8 17.5 8 8000 4 45 95 B DWA-20B 23 25.8 8 8000 5 55 125 B DWA-30B 34.5 38 8 8000 9 75 150 C DWA-07C 6.6 7.2 16 16000 3 27 60 C DWA-15C 13.8 17.5 16 16000 5 45 95 C DWA-20C 23 25.8 16 16000 7 55 125 C DWA-30C 34.5 38 16 16000 11 75 150 GENERAL DIMENSIONS: TYPE MODEL A B C D E F G H mm mm mm inches inches inches mm mm base upper lower upper radial C to C of creepage height dia face dia hole φ hole φ hole φ radial hole distance A DWA-07A 100 60 60 1/2 3/8 1/4 36 115 A DWA-15A 165 75 57 5/8 3/8 1/4 36 230 A DWA-20A 210 82 57 5/8 3/8 1/4 36 290 A DWA 30A 300 100 71 5/8 3/8 1/4 36 430 B DWA-07B 100 75 75 5/8 5/8 3/8 46 120 B DWA-15B 165 85 77 3/4 5/8 3/8 46 230 B DWA-20B 210 90 77 3/4 5/8 3/8 46 290 B DWA-30B 300 100 100 1 5/8 3/8 46 433 C DWA-07C 100 127 127 3/4 5/8 3/8 66 253 C DWA-15C 165 127 127 3/4 5/8 3/8 66 403 C DWA-20C 210 127 127 3/4 5/8 3/8 66 533 C DWA-30C 300 127 127 1 5/8 3/8 66 719 pg 48

FC45R - reinforced 45mm clip Rating - 200A H - 95mm W - 40mm L - 32mm w/o tang Mntg holes - 2-1/4" &1/2" on clip centerline. see below for tang info. DW-820-2 heavy duty 45mm clip Rating - 630A H - 92mm W - 80mm L - 96.5mm incl. tang fmtng. holes - drilled to match our insulator bolt pattern. See page 47. DW-820-13 1250A dual 45mm Rating - 1000A H - 92mm W - 171mm L - 82mm incl. tang Mtng. holes -to fit our insulators. See page 47. PT1-1" spring clip Rating - 60A H - 1.30" W - 1.12" L - 0.625" Mntg. hole - 0.26" on clip centerline. FC3R - 3" spring clip Rating - 600A H - 4.5" W - 4.3" L - 1.5" Mntg. holes - 2 x 3/8" holes, 2" apart on clip centerline. PT156-1-9/16" spring clip Rating - 200A H - 95mm W - 40mm L - 32mm w/o tang Mntg hole - 1 x 1/2" on clip centerline. see below for tang info. Metric/UNC Adapter stud Receptacle Thread Specs & Part Numbers Extension for FC45R & PT156 Use terminal tang when clip is mounted to non conducting support or alternate termination is required. For use with PT156 part no. PT156-EXT Part No. Stud Receptacle S13-R12 1/2-13 unc M12 S38-R12 3/8-16 unc M12 S12-R13 M12 1/2-13 unc S12-R38 M12 3/8-16 unc For use with FC45R part no. FC45R-EXT pg 49

TCCF 2.4/4.8kV Capacitor fuses TCCF fuses are current-limiting, partial range fuse designed to provide short circuit protection for capacitors. The primary application of these fuses is for the individual unit fusing of three phase capacitors in metal enclosed equipments. They are non-indicating and nondisconnecting.! Direct stud-mounting on 1/2-13 capacitor studs eliminates seperate holder.! replaces Westinghouse and CGE fuses! Adapters are available to convert to other stud threads(pg49) p/n example TCCF- 50A Application Please refer to the fuse selection chart on page 44 of this publication. For higher amp and voltage ratings - please refer to our Dreischer section on pages 26-31. Ratings: 25, 50, 75, 100, 125, 200A Vac: 25-75A 4.8kV 100-200A 2.4kV I.R: 50kA rms symm m.b.c 200% of rating Approvals: self certified to ANSI 47.40 TFCF Melting time current characteristics 1000 Dimensions (mm) 100 Stud 1/2-13unc 50 20 185 225 Time in seconds------> 10 1 25 50 75 100 200 125 0.1 Boss 1/2-13unc internal 25 hex 20 0.01 1 10 100 1000 10000 RMS Amperes-------> pg 42

TFCF 600V Capacitor fuses TFCF fuses are current limiting fuses designed for unit fusing of 600v (or less) capacitors. They are threaded for M12 metric capacitor bushings, but may be adapted to 3/8 or 1/2" UNC threads with the adapters shown on page 48.! Metric threaded for direct screw on mounting to metric capacitor studs.! Excellent short circuit performance.! Fully plated metal parts for cooler running. 600Vac 200kA IR TFCF fuses should be selected at 250-300% of the nominal capacitor full load current or next nearest size up. If capacitor is installed in close proximity to other capacitor banks, or is switched frequently, select higher amp fuses within this range. p/n example TFCF- 50A 1000 100 Melting Time Current Characteristics Part number TFCF General Specifications - in. (mm) Amp ratings L D 6, 10, 15, 20, 25, 30A 35, 40, 50, 60A 70, 80, 90, 100A 110,125, 150, 175, 200A 4.13" (105) 4.84" (123) 1.10" (28) 1.62" (41) Time in seconds------> 10 1 1.18 (30).78 (20) Stud M12 external top D L 0.1 6 10 15 20 30 40 60 80 100 125 175 25 35 50 70 90 110 150 200 bottom.78 (20) 0.01 1 10 100 1000 10000 RMS Amperes------->.85 (22) Boss M12 internal pg 43

Fuse Selection chart for Capacitors Applicable for all current limiting fuses - high and low voltage. Use dotted line for single phase and star connections, solid line for delta connections. Above 100A, curves are identical. For auto-switching, or switching in close proximity to other capacitor banks, multiply capacitor FLA x 1.6 before using scale at bottom. Read up from capacitor FLA scale at bottom to intersection of appropriate curve (star or delta). Fuse rating is whatever band intersection occurs in. Read fuse rating on left scale. pg 44

Stud Mount Capacitor fuses All the Driescher fuses listed on the preceding 2 pages can be ordered with tapped 1/2-13unc inserts for mounting directly to capacitor bushings. (see page 26 for dimensions). Additional sizes are listed below. To order this feature, change the DRS to DRK. eg: DRK07/100-A2 Note: DRK series fuses have the striker pin omitted. Electrical data and nominal dimensions are the same as for DRS. 2.4-7.2kV Part Numbers DRK07/4-A1 Amps 4A DRK07/32-A1 32A 40kA 500 80A DRK07/40-A1 40A 100A DRK07/50-A1 50A 125A DRK07/63-A1 63A 158A DRK07/75-A1 75A 225A DRK07/100-A1 100A 300A Interrupting Rating Major Dimensions (mm) m.b.c (A) I.R mva TL L D 10A DRK07/6-A1 6A 15A DRK07/10-A1 10A 25A DRK07/16-A1 16A 40A DRK07/25-A1 25A 63A 258 192 66 100 Driescher Current Cut-off characteristics all voltage classes peak current (A) x 1000 10 500 400 315 250 200 160 125 100 75 63 50 40 32 25 16 10 6.3 1 1 10 100 Prospective Short Circuit - rms amps x 1000 pg 30

Driescher DIN 43 625 melting time current characteristics 1000 100 Time in seconds------> 10 1 0.1 0.01 6 10 16 25 32 40 50 63 75 100 160 250 400 630 125 200 315 500 1 10 100 1000 10000 100000 RMS Amperes-------> pg 31

Driescher DIN HV Distribution Driescher fuses are preferred in some utility applications due to their faster characteristic which improves upstream co-ordination with utility devices.! Very high amp ratings available! Available in stud mount versions for mount ing on capacitor bushings.! Interchangeable with other standard DIN dimension HV fuses. Please see application notes for DIN fuses on page 19. Dresicher fuses have standard DIN 43 625 dimensions. Please refer to the specification tables on the following pages for dimensions and technical data. Dimensions (mm) 1/2-13unc inserts for DRK series (both ends indentical) TL pg 26

Transformer application The fuse ratings recommended in the following tables have been chosen with the following conditions in mind:! Fuses must pass normal primary winding magnetising inrush currents: These are taken as 12x the normal full load current(flc) at.1 sec, and 25x FLC at.01 sec. Certain applications may require a higher amp rating than recommended. Please contact Fusetek with application details.! After a sustained power outage, the fuse must be able to withstand an overload of approximately 6 x FLC for 1 sec. and 3 x FLC for 10 sec.! The maximum voltage rating of the fuse must be equal to, or greater than the maximum line-to-line system voltage including utility tolerances. Capacitor Application Minimum fuse rating for Transformer Application Tx System kv Kva 2.4 4.16 4.8 7.2 13.8.4 15.5 23 25.8 27.6 34 Fuse amp rating 15 6 6 4 3 2 2 2 1 1 1 1 30 16 10 6 4 3 3 2 2 2 2 1 45 25 16 16 10 4 4 4 3 2 2 2 75 32 25 25 16 6 6 6 4 4 3 3 112.5 50 32 32 25 10 10 10 6 6 6 4 150 63 40 40 32 16 16 16 10 6 6 6 225 100 63 50 40 25 25 25 16 10 10 10 300 100 75 63 50 32 25 25 16 16 16 10 400 125 100 75 63 32 32 32 25 25 25 16 500 200 100 100 75 40 40 40 32 25 25 25 750 250 160 125 100 63 63 50 32 32 32 32 1000 315 200 160 125 75 75 63 50 50 32 32 1250 400 250 200 160 75 75 75 63 50 40 40 1500 500 315 250 200 100 100 100 75 63 63 50 2000 630 400 315 250 160 160 100 75 75 75 63 2500-500 400 315 160 160 125 100 100 100 75 3000-630 500 315 200 200 160 125 100 100 100 3750 - - 630 400 250 250 200 125 125 100 100 4000 - - 800 500 250 250 200 160 125 125 100 5000 - - - 630 315 315 250 200 160 160 125 6000 - - - 630 355 315 315 250 200 200 160 7000 - - - 800 400 400 400 250 250 250 200 8000 - - - - - - - 315 250 250 200 10000 - - - - - - - - 315 315 250 All Dreischer fuses can be supplied with 1/2-13unc threaded inserts (single barrel only) for direct mounting to capacitor bushings. Characteristics remain unchanged from standard Dreischer fuses. Change DRS in part number to DRK if this option is required. See selection table on page 44 for correct fuse sizing. pg 27

Driescher DIN distribution fuses Part Numbers Amps Interrupting Rating Major Dimensions (mm) m.b.c (A) I.R mva TL L D 2.3-4.8kV DRS04/125-B1 125A 500 375A 40kA DRS04/160-B1 160A 530 480A 258 192 DRS04/200-B2 200A 63kA 500 800A 85 DRS04/250-B2 250A 1000A 40kA 330 DRS04/315-B2 315A 1260A DRS04/400-B7 400A 63kA 500 800A DRS04/500-B7 500A 1000A 40kA 330 DRS04/630-B7 600A 1260A 2.4-7.2kV DRS07/2-A2 2A 5A DRS07/4-A2 4A 10A DRS07/6-A2 6A 15A DRS07/10-A2 10A 25A DRS07/16-A2 16A 1000 40A DRS07/25-A2 25A 63A 63kA DRS07/32-A2 32A 80A DRS07/40-A2 40A 100A DRS07/50-A2 50A 125A DRS07/63-A2 63A 158A DRS07/75-A2 75A 800 225A DRS07/100-A2 100A 300A 4.8-7.2kV DRS07/125-B4 125A 375A 1300 DRS07/160-B4 160A 63kA 480A DRS07/200-B4 200A 500 800A DRS07/250-B4 250A 1000A 40kA 500 DRS07/315-B4 315A 1260A DRS07/400-B4 400A 1600A 20kA 300 DRS07/500-B4 500A 1750A 2.4/7.2kV DRS07/125-A7 125A 158A DRS07/150-A7 150A 63kA 800 225A DRS07/200-A7 200A 300A DRS07/315-B8 315A 1300 480A 63kA DRS07/400-B8 400A 500 800A DRS07/500-B8 500A 1000A 40kA 500 DRS07/630-B8 630A 1260A 7.2-12kV DRS12/125-B4 125A 63kA 375A DRS12/160-B4 160A 480A 40kA DRS12/200-B4 200A 800A 500 DRS12/250-B7 250A 63kA 375A DRS12/315-B7 315A 480A 40kA DRS12/400-B7 400A 800A 10-17.5kV DRS15/2-A4 2A 5 DRS15/4-A4 4A 10 DRS15/6-A4 6A 80Ka 2000 15 DRS15/10-A4 10A 25 DRS15/16-A4 16A 40 358 292 Double 85 358 292 66 508 442 85 358 292 double 66 508 442 double 85 358 292 85 358 292 double 85 508 442 66 pg 28

Part Numbers Amps Interrupting Rating Major Dimensions (mm) m.b.c (A) I.R mva TL L D 10-17.5kV continued DRS15/25-A4 25A 63 DRS15/32-A4 32A 2000 80 80 DRS15/40-A4 40A 100 66 DRS15/50-A4 50A 1600 125 DRS15/63-A4 63A 32 100 158 508 442 DRS15/75-B4 75A 2000 225 20 DRS15100-A4 100A 1600 300 DRS15/125-B4 125A 1600 375 85 40 DRS15/160-B4 160A 1000 480 DRS15/200-B4 200A 20 500 800 DRS15/200-B5 200A 25 750 800 603 537 DRS15/250-B8 250A 1600 375 508 442 40 DRS15/315-B8 315A 1000 480 508 442 double 85 DRS15/400-B8 400A 20 500 800 DRS15/400-B9 400A 25 750 800 603 537 20/25.8kV DRS20/6-A4 6A 15 DRS20/10-A4 10A 25 DRS20/16-A4 16A 40 40 1600 DRS20/25-A4 25A 63 508 442 66 DRS20/32-A4 32A 80 DRS20/40-A4 40A 100 DRS20/50-A4 50A 125 DRS20/63-A4 63A 158 25 1000 DRS20/75-B4 75A 225 DRS20/100-B4 100A 300 85 DRS20/125-B4 125A 375 20 800 DRS20/160-B4 160A 480 508 442 DSR20/200-B8 200A 25 1000 300 DRS20/250-B8 250A 375 20 800 DRS20/315-B8 315A 480 double 85 DRS20/250-B9 250A 40 1600 375 DRS20/315-B9 315A 25 1000 480 603 537 30/38kV DRS30/2-A5 2A 5 603 DRS30/4-A5 4A 10 DRS30/6-A5 6A 15 603 DRS30/10-A5 10A 25 603 2000 DRS30/15-A5 16A 32 40 603 537 66 DRS30/25-A5 25A 63 603 DRS30/32-A5 32A 80 603 DRS30/40-A5 40A 100 603 DRS30/50-A5 50A 1600 125 603 DRS30/63-A5 63A 16 1000 158 603 DRS30/75-B5 75A 20 2000 225 603 DRS30/100-B5 100A 20 2000 300 603 537 85 DRS30/125-A9 125A 16 1000 158 603 double 66 DRS30/150-B9 150A 225 20 2000 DRS30/200-B9 200A 300 603 537 double 85 DRX30/250-B9 250A 30 1000 375 DRX30/315-B9 315A 30 1000 480 pg 29

Stud Mount Capacitor fuses All the Driescher fuses listed on the preceding 2 pages can be ordered with tapped 1/2-13unc inserts for mounting directly to capacitor bushings. (see page 26 for dimensions). Additional sizes are listed below. To order this feature, change the DRS to DRK. eg: DRK07/100-A2 Note: DRK series fuses have the striker pin omitted. Electrical data and nominal dimensions are the same as for DRS. 2.4-7.2kV Part Numbers DRK07/4-A1 Amps 4A DRK07/32-A1 32A 40kA 500 80A DRK07/40-A1 40A 100A DRK07/50-A1 50A 125A DRK07/63-A1 63A 158A DRK07/75-A1 75A 225A DRK07/100-A1 100A 300A Interrupting Rating Major Dimensions (mm) m.b.c (A) I.R mva TL L D 10A DRK07/6-A1 6A 15A DRK07/10-A1 10A 25A DRK07/16-A1 16A 40A DRK07/25-A1 25A 63A 258 192 66 100 Driescher Current Cut-off characteristics all voltage classes peak current (A) x 1000 10 500 400 315 250 200 160 125 100 75 63 50 40 32 25 16 10 6.3 1 1 10 100 Prospective Short Circuit - rms amps x 1000 pg 30

Driescher DIN 43 625 melting time current characteristics 1000 100 Time in seconds------> 10 1 0.1 0.01 6 10 16 25 32 40 50 63 75 100 160 250 400 630 125 200 315 500 1 10 100 1000 10000 100000 RMS Amperes-------> pg 31

Driescher HV loadbreak switches DRIWISA load-break switches are used to connect or disconnect high voltage distribution circuits under load conditions. The fused version of the switch provides automatic 3 phase disconnect if any of the fuses operates. Operation of the fused and non-fused versions can also be initiated through a shunt trip or manual operation.!#high speed operating mechanism!#compact dimensions!#ansi ratings!#available in fusible and non-fusible versions Note: for complete data please request Dreischer bulletin. Part numbers for 630A, RH operating mech, automatic trip Fusible version - for fuse length Vac Non fusible BL=192mm BL=292mm BL=442mm BL=537mm 7.2kV LDTP07/060CKN LDTP07/061CKN LDTP07/062CKN LDTP07/064CKN LDTP07/065CKN 17.5kV LDTP15/060CKN - - LDTP15/064CKN LDTP15/065CKN 25.8kV LDTP20/060CKN - - LDTP20/064CKN LDTP20/065CKN 38kV LDTP30/060CKN - LDTP30/065CKN Specifications MAXIMUM RATED ASYMMETRICAL SHORT-TIME BASIC IMPULSE LEVEL WITHSTAND VOLTAGE VOLTAGE CURRENT PEAK CURRENT (BIL) 1.2 x 50 s 60 Hz 1 min DRY SERIE CURRENT Up Ud KV A KA(rms) KA(rms) KV KV TO GROUND ACROSS TO GROUND ACROSS Ur Ir Ip Ik AND BETWEEN OPEN AND BETWEEN OPEN $ # # POLES GAP POLES GAP 07 7.2 630 65 25 60 70 20 23 1250 99 38.1 60 70 20 23 15 17.5 630 65 25 95 110 38 45 1250 99 38.1 95 110 38 45 20 25.8 630 65 25 125 0 60 66 1250 99 38.1 125 0 60 66 30 38 630 65 25 150 165 80 88 1250 99 38.1 150 165 80 88 pg 33

HV Motor Fuses Specifications Voltage Rating: Interrupting Rating: Amp Range: 2500-7200Vac 50kA rms. symm. 2R-36R (50-650A) Designed to: Ansi (2.5 & 5.5) IEC 269-2 (7.2kV) Ratings available: 2.5kV 2, 4, 5, 6, 9, 12R 5.5kV 2, 4, 5, 6, 9, 12, 18, 24, 30, 36R 7.2kV 50-355A (2R-18R) Description MR series fuses are current-limiting backup fuses designed to protect medium voltage motors and their associated control. They have standardised dimensions and are fully interchangeable with other fuses of the same type and rating. Blown fuse indication is standard on all types. The design of the striker travel and force meets standard requirements for mechanical actuation. 'R' Rating Defined Features! Integral indicating pin for visual or mechanical operation! 2.5kV and 5.5kV fuses can be hermetically sealed and supplied without indicator for use in hazardous location application.! fully plated metal parts for low contact resistance! standard 'R' ratings ensure interchangeability. Installation notes The 'R' rating for a fuse is established by dividing the 20-35 second melt current of the fuse by 100. In this way, fuses having the same 'R' rating will melt at the same current level at 20s - thus ensuring identical motor starting capability and coordination with the overload relays. When replacing motor starting fuses, always match the 'R' rating - not the amp rating - to maintain identical co-ordination and motor starting capability. Fusetek MR fuses can replace any manufacturers' motor fuse having the same dimensions. Ensure that fuse clips still have good tension and clean all contact surfaces before re-installing fuses. The striker pin should be pointing up when installing fuses. Fuses should be replaced in sets of three to avoid nuisance blowing caused by element damage. Motor Circuits There are motor/fuse selection charts in each section. To use these fuse charts it is necessary to know the starting current and run-up time of the motor. For starting conditions not shown, please contact Fusetek.! Select appropriate run-up time (6 or 15 seconds)! Read down to appropriate starting current range.! Read across to find 'R' rating. Companion Products Insulators, fuse clips, adapter kits - see rear of HV section. Loadbreak switches pg

2.5kV Motor fuses - 7" centre Clip- in style 100 10 Time in seconds 1 Melting Time Current Characteristics General Specifications D x L Part Number R FLA (inches) 70-2R-1C-2.75 2R 70 I.R ka total I2t x 1000 100-3R-1C-2.75 3R 100 150 130-4R-1C-2.75 4R 130 230 150-5R-1C-2.75 5R 150 3 50 300 170-6R-1C-2.75 200-9R-1C-2.75 6R 9R 170 200 10.8 ka rms 380 550 230-12R-1C-2.75 12R 230 720 390-18R-2C-2.75 18R 390 2x3 1700 450-24R-2C-2.75 24R 450 2200 75 0.1 2R 3R 4R 6R 9R 12R 24R 5R 18R 0.01 100 1000 10000 100000 RMS Amperes Fuse selection for Motors rated 2.5kV or less Motor Starting Current (A) Fuse for 6 sec. run-up for 15 sec. run-up Rating from to from to 2R 0 165 120 150 3R 165 250 150 215 4R 250 340 215 350 5R 340 430 300 420 6R 430 550 420 480 9R 550 800 480 680 12R 800 00 680 1200 18R 00 1650 1200 00 24R 1650 2300 00 1800 Peak amps x 1000 100 10 1 0.1 Current Cut-off at rated voltage 0.1 1 10 100 Prospective Short Circuit - rms Amps x 1000 24R 18R 12R 9R 6R 5R 4R 3R 2R pg 15

5.5kV Motor fuses - 12" centre Clip-in style 100 10 Time in seconds 1 0.1 Melting Time Current Characteristics General Specifications Part Number A F.L.A D x L I.R total I2t (inches) ka x1000 70-2R-1C5.5 2R 70 75 100-3R-1C-5.5 3R 100 150 130-4R-1C-5.5 4R 130 230 150-5R-1C-5.5 5R 150 300 3 170-6R-1C-5.5 6R 170 380 200-9R-1C-5.5 9R 200 15.8 50kA 550 230-12R-1C-5.5 12R 230 rms 720 390-18R-2C-5.5 18R 390 1700 450-24R-2C-5.5 24R 450 2200 2x3 550-30R-2C-5.5 30R 550 3300 650-36R-2C-5.5 36R 650 5200 0.01 2R 3R 4R 6R 9R 12R 24R 36R 5R 18R 30R 38R 100 1000 10000 100000 RMS Amperes Fuse selection for Motors rated 5.5kV or less Fuse Rating Motor Starting Current (A) for 6 sec. run-up for 15 sec. run-up from to from to 2R 0 165 120 150 3R 165 260 150 225 4R 260 360 225 315 5R 360 435 315 375 6R 435 540 375 450 9R 540 780 450 675 12R 780 1080 675 950 18R 1080 1650 950 1350 24R 1650 2100 1350 1800 30R 2100 2750 1800 2250 36R 2750 3300 2250 2850 Peak amps x 1000 100 10 1 0.1 Current Cut-off at rated voltage 0.1 1 10 100 Prospective Short Circuit - rms Amps x 1000 38R 36R 30R 24R 18R 12R 9R 6R 5R 4R 3R 2R pg 16

7.2kV Motor fuses - British bolt-in style 1000 Melting Time Current Characteristics Part Number General Specifications F.L.A Equiv R rating D x L (inches) I.R ka 50 2R 63 3R Time in seconds------> 100 10 1 3027136 80-100 4R 125 5R 0 6R 160-200 9R 250 12R 315 18R 3 15.8 50 0.1 50 80 125 160 250 63 100 0 200 315 0.01 100 1000 10000 100000 RMS Amperes-------> Fuse selection for Motors rated 7.2kV or less Fuse Rating Motor Starting Current (A) for 6 sec. run-up for 15 sec. run-up from to from to 2R 0 195 0 172 3R 196 278 173 240 4R 279 435 241 375 5R 436 503 376 412 6R 504 585 413 510 9R 586 825 511 675 12R 826 1300 676 675 18R 1301 1800 676 1500 Peak Current - assym. amps x 1000 100 10 1 Current Cut-off at rated voltage 315 250 200 160 0 125 100 80 63 50 0.1 0.1 1 10 100 Prospective Short Circuit - rms Amps x 1000 pg 17

Other types and tag arrangements Our 3" diameter R and E rated ferrule (clip-in) are available with modified caps/tags as shown below.the modification of the end fittings does not affect the electrical performance of the fuse. Please refer to the appropriate basic ferrule fuse data. 2" Hookeye Feature - add 'W' to part number Bolt-in Tags - add 'Bi' to part number 2" Extension - add 'X' to part number Types 1B 1iB ITE Clip-Loc feature - add 'CL' to part number GE Bolt in tags add 1B or 1iB to part number Option Availability 2.75kV - R 5.5kV - R 8.3kV - R 2.75kV - E 5.5kV - E 8.3kV - E 15.5kV - E 25.8kV - E 38kV - E Plain Ferrule " " " " " " " " " Bi bolt-in W Hookeye 1B bolt-in 1iB bolt-in CL ClipLoc X body extension " " " " " " " " " " " " " " " " " " " " " pg 18

Potential Transformer fuses FC series fuses are current limiting, non-indicating, partial range HRC fuses available in a variety of voltage, amperage and interrupting ratings. (see chart). FC series are North American dimensioned PT fuses and provide equals to Westinghouse and CGE. BPT series are British dimensioned PT fuses and offer equals to GEC, Brush, CCL, and EMP.! Pure silver elements! Fully plated metal parts for cool running.! Excellent current limitation for substantial reduction of short circuit stresses. Retrofitting Fusetek PT fuses can replace any other manufacturers' PT fuse with same dimensions and voltage/amp rating. When replacing fuses, ensure that fuse clips still have good spring tension. Adjust or replace if necessary. Make sure contact surfaces are clean and free of corrosion. Companion Products Insulators, fuse clips and bases. Please see the end of this section for these items. PT Fuses - General Specifications Vac Part Number Ratings D x L (inches) I.R rms symm. North American dimensions 625 FC460 1/2, 1, 2, 3, 5A 4.6 13/16 2.75kV FC461 1/4, 1/2, 1, 1, 2, 3A 4.6 37.5kA 2.75kV FC462 7.4 1/2, 1, 1.5 2, 3, 5A 1-9/16 FC463 9.5 37.5kA 4.8kV 4.8NPT 1/2, 1, 2, 3, 5A 13/16 5.6 50kA 5.5kV FC464 7.4 1/2, 1, 1.5 2, 3, 5A 1-9/16 FC465 9.5 50kA 8.3kV FC466 1/2, 1, 1.5 2, 3, 5A 1-9/16 9.5 50kA 15.5kV FC467 1/2, 1, 1.5 2, 3, 5A 1-9/16 12.8 35kA 25.8kV FCA22 1/2, 1, 2, 3, 5A 1-9/16 17.5 32kA British dimensions 5.5kV 5.5BPT 1/2, 1, 3, 5A 1.0 5.6 40kA 8.5kV 8.5BPT 1/2, 1, 3A 1.0 7.6 40kA Other types 1.2kV 7003409 125mA-6.3A 8mm 50mm 35A 3.0kV 7003709 125mA-4A 8mm 85mm 35A 6.0kV 7004010 125mA-4A 8mm 120mm 35A 10.0kV 7004310 125mA-2A 8mm 150mm 35A 15.5kV FC493-1/2E Ozonator 1/2A only 15mm 153mm 30kA pg 40

Application PT fuses are used to isolate the voltage (or PT) transformer from the supply in the event of a primary winding failure. Properly selected fuses will also operate quickly if there is a short circuit on the secondary side of the transformer. To provide optimum protection without nuisance blowing, it is necessary to consider the following points:! The interrupting rating must be equal to or greater than the largest anticipated short circuit.! The fuse must pass the magnetising inrush to the primary windings without damage or operation. This inrush is normally considered to be 12 times the primary FLC for 0.1 second.! The fuse's voltage rating must be equal to, or greater than the system voltage. 3 phase FLC = kva x 1000 Single phase FLC = kva x 1000 vac x 1.73 vac all PT fuses Transformer Application Table Transformer Primary FLC (A) from to Fuse rating (A) 0 0.15 1/2 0.16 0.30 1 0.31 0.43 1.5 0.44 0.60 2.061 1.0 3 1.1 1.54 5 1000 100 10 Melting Time current Characteristics Time in seconds 1 0.1 1/2 1 1.5 2 3 5 0.01 0.1 1 10 100 RMS Amperes pg 41

Potential Transformer fuses FC series fuses are current limiting, non-indicating, partial range HRC fuses available in a variety of voltage, amperage and interrupting ratings. (see chart). FC series are North American dimensioned PT fuses and provide equals to Westinghouse and CGE. BPT series are British dimensioned PT fuses and offer equals to GEC, Brush, CCL, and EMP.! Pure silver elements! Fully plated metal parts for cool running.! Excellent current limitation for substantial reduction of short circuit stresses. Retrofitting Fusetek PT fuses can replace any other manufacturers' PT fuse with same dimensions and voltage/amp rating. When replacing fuses, ensure that fuse clips still have good spring tension. Adjust or replace if necessary. Make sure contact surfaces are clean and free of corrosion. Companion Products Insulators, fuse clips and bases. Please see the end of this section for these items. PT Fuses - General Specifications Vac Part Number Ratings D x L (inches) I.R rms symm. North American dimensions 625 FC460 1/2, 1, 2, 3, 5A 4.6 13/16 2.75kV FC461 1/4, 1/2, 1, 1, 2, 3A 4.6 37.5kA 2.75kV FC462 7.4 1/2, 1, 1.5 2, 3, 5A 1-9/16 FC463 9.5 37.5kA 4.8kV 4.8NPT 1/2, 1, 2, 3, 5A 13/16 5.6 50kA 5.5kV FC464 7.4 1/2, 1, 1.5 2, 3, 5A 1-9/16 FC465 9.5 50kA 8.3kV FC466 1/2, 1, 1.5 2, 3, 5A 1-9/16 9.5 50kA 15.5kV FC467 1/2, 1, 1.5 2, 3, 5A 1-9/16 12.8 35kA 25.8kV FCA22 1/2, 1, 2, 3, 5A 1-9/16 17.5 32kA British dimensions 5.5kV 5.5BPT 1/2, 1, 3, 5A 1.0 5.6 40kA 8.5kV 8.5BPT 1/2, 1, 3A 1.0 7.6 40kA Other types 1.2kV 7003409 125mA-6.3A 8mm 50mm 35A 3.0kV 7003709 125mA-4A 8mm 85mm 35A 6.0kV 7004010 125mA-4A 8mm 120mm 35A 10.0kV 7004310 125mA-2A 8mm 150mm 35A 15.5kV FC493-1/2E Ozonator 1/2A only 15mm 153mm 30kA pg 40

Application PT fuses are used to isolate the voltage (or PT) transformer from the supply in the event of a primary winding failure. Properly selected fuses will also operate quickly if there is a short circuit on the secondary side of the transformer. To provide optimum protection without nuisance blowing, it is necessary to consider the following points:! The interrupting rating must be equal to or greater than the largest anticipated short circuit.! The fuse must pass the magnetising inrush to the primary windings without damage or operation. This inrush is normally considered to be 12 times the primary FLC for 0.1 second.! The fuse's voltage rating must be equal to, or greater than the system voltage. 3 phase FLC = kva x 1000 Single phase FLC = kva x 1000 vac x 1.73 vac all PT fuses Transformer Application Table Transformer Primary FLC (A) from to Fuse rating (A) 0 0.15 1/2 0.16 0.30 1 0.31 0.43 1.5 0.44 0.60 2.061 1.0 3 1.1 1.54 5 1000 100 10 Melting Time current Characteristics Time in seconds 1 0.1 1/2 1 1.5 2 3 5 0.01 0.1 1 10 100 RMS Amperes pg 41

HV DIN fuse bases DRIWISA fuse bases are available in single or 3 pole versions in 630 or 1250A (dual clip) versions. Supported voltages are 7.2, 17.5, 25.8 and 38kV. Base is heavy duty galvanised steel with epoxy resin standoff insulators. 630A silver plated clips are standard. 3 pole versions can be fitted with auxilliary microswitches for remote blown-fuse annunciation. Note: these bases can be modified to accept North American E rated fuses. Please contact Fusetek for details. Part numbers for 630A single & 3 pole DIN fuse bases Fuse body length (BL) Vac No. Poles BL=192mm BL=292mm BL=442mm BL=537mm 7.2kV 17.5kV 25.8kV 38kV 1 SP07/061AMN SP07/062AMN SP07/064AMN SP07/065AMN 3 DSP07/061AMN DSP07/062AMN DSP07/064AMN DSP07/065AMN 1 - SP15/062AMN SP15/064AMN SP15/065AMN 3 - DSP15/062AMN DSP15/064AMN DSP15/065AMN 1 - - SP20/064AMN SP20/065AMN 3 - - DSP20/064AMN DSP20/065AMN 1 - - - SP30/065AMN 3 - - - DSP30/065AMN Specifications MAXIMUM RATED BASIC IMPULSE LEVEL WITHSTAND VOLTAGE VOLTAGE CURRENT (BIL) 1.2 x 50 s 60 hz 1 min DRY SERIE Up Ud kv A kv kv TO GROUND ACROSS TO GROUND ACROSS Ur Ir AND BETWEEN OPEN AND BETWEEN OPEN POLES GAP POLES GAP 07 7.2 630 60 70 20 23 15 17.5 630 95 110 38 45 20 25.8 630 125 0 60 66 30 38 630 150 165 80 88 pg 32

Medium Voltage Fuses 2400-25,500 VAC Current Limiting Current limiting E and R rated fuses are equipped with a mechanical indicator or striker pin that protrudes through the fuse cap upon operation of the fuse. This provides visual identification of a blown fuse and can be used as a trigger for external devices. Littelfuse now offers a complete selection of E and R rated medium voltage fuses for the protection of transformers, potential transformers, feeders, and motor circuits. Single, double, and triple barrel designs are available to cover a wide range of current, voltage, and interrupting ratings. Conventional ferrule type, clip lock, and bolt-in mounting configurations are now available for virtually any application. Hermetically sealed fuses for use in hazardous environments are also offered. Contact the factory or your local Littelfuse representative for additional fuse ratings or custom mounting configurations. 24 Hour Emergency Service is available. Call 1-800-227-0029. GENERAL INFORMATION The terms Medium Voltage and high voltage have been used interchangeably by many people to describe fuses operating above 600 volts. Technically speaking, medium voltage fuses are those intended for the voltage range from 2,400 to 38,000 VAC. High voltage fuses are for circuits carrying voltages greater than 38,000 VAC. E Rated fuses are considered to be general purpose fuses and can be used to protect against low and high values of fault current. R rated fuses are designed for back-up protection. They must be used in series with other devices, such as motor overload relays, in order to achieve both overload and short circuit protection. Medium voltage fuses are not intended to provide overload protection in the same sense as fuses rated 600 volts or less. Medium voltage fuse current ratings do not have the same meanings as the ampere ratings of low voltage fuses. All medium voltage fuses are limited in their ability to interrupt low value overcurrents, especially those between 100% and 200% of the fuse s continuous current rating. They are designed to carry their rated current without exceeding the temperature rise permitted by NEMA and ANSI standards. Additional application data can be found in the Fuse Application section of the POWR-GARD Products catalog (PF101). APPLICATIONS Power Transformer Protection Potential Transformer Protection Motor Controller Back-up Protection Fused Switches Feeder Circuits Bolt-in Mount Fuses 61

R Rated Medium Voltage Fuses Current Limiting FEATURES R rated fuses provide required short-circuit protection for medium voltage motors, motor controllers and associated circuitry. These components have limited ability to absorb the energy of large short circuit currents. Medium voltage motor controllers contain overload relays which provide both overload protection and locked rotor protection to the motor. The controllers are also intended to interrupt low value short circuits within the capability of the motor controller. This protects the medium voltage fuse from sustained overcurrents which are less than their minimum interrupting rating. NEMA Standards for R rated medium voltage power fuses require that they operate within 15-35 seconds when subjected to an rms current 100 times the R rating. For example, a fuse with a 2R rating will open within 15 to 35 seconds on an applied current of 2 x 100 = 200 amperes. Part Number System 130-4R-1C-5.5 Max Voltage (KV) Style (C-Cartridge) No. of Barrels Rating (size) Continuous Current CHARACTERISTICS Voltage Rating: 2,400 volts 15,500 volts Current Range: 2R 36R OPTIONS Hermitically sealed for use in hazardous locations (add S suffix to part number) Hookeye attachment (add W suffix to part number) Bolt-in mounting configurations Hookeye Feature* *For hookeye attachment; add W suffix to part number 3"DIA 6.38" 9.75" Dim.A Clip Center Dim.B D DD DDD FIGURE 1 FIGURE 2 FIGURE 3 R RATED 2.75 KV Catalog Number 70-2R-1C-2.75 100-3R-1C-2.75 130-4R-1C-2.75 150-5R-1C-2.75 170-6R-1C-2.75 200-9R-1C-2.75 230-12R-1C-2.75 390-18R-2C-2.75 450-24R-2C-2.75 Old Catalog Number LCK 2R LCK 3R LCK 4R LCK 5R LCK 6R LCK 9R LCK 12R LCK 18R LCK 24R Size 2R 3R 4R 5R 6R 9R 12R 18R 24R Maximum Continuous Current @ 40 deg C. 70 100 130 150 170 200 230 390 450 Dim. A (inches) 7" 7" Dim. B (inches) 10.875" 10.875" Minimum Interrupting Rating RMS Amps 170 250 340 390 500 760 1000 1500 1950 Max Interrupting Rating RMS Asym Figure Number 1 1 1 1 1 1 1 2 2 Add w suffix to part number for hookeye attachment. 62

R Rated Medium Voltage Fuses Current Limiting 3"DIA 6.38" 9.75" Dim.A (Clip Center) Dim.B FIGURE 4 FIGURE 5 FIGURE 6 R RATED 5.5 KV Catalog Number 70-2R-1C-5.5 100-3R-1C-5.5 130-4R-1C-5.5 150-5R-1C-5.5 170-6R-1C-5.5 200-9R-1C-5.5 230-12R-1C-5.5 390-18R-2C-5.5 450-24R-2C-5.5 480-26R-2C-5.5 550-30R-2C-5.5 600-32R-2C-5.5 650-36R-2C-5.5 550-30R-3C-5.5 600-32R-3C-5.5 650-36R-3C-5.5 Old Catalog Number LCL 2R LCL 3R LCL 4R LCL 5R LCL 6R LCL 9R LCL 12R LCL 18R LCL 24R LCL 36R Size 2R 3R 4R 5R 6R 9R 12R 18R 24R 26R 30R 32R 36R 30R 32R 36R Maximum Continuous Current @ 40 deg C. 70 100 130 150 170 200 230 390 450 480 550 600 650 550 600 650 Dim. A (inches) 12" 12" 12" Dim. B (inches) 15.875" 15.875" 15.875" Minimum Interrupting Rating RMS Amps 170 250 340 390 500 760 1000 1500 1950 2100 2400 2600 2900 2400 2600 2900 Max Interrupting Rating RMS (Asym) Figure Number 4 4 4 4 4 4 4 5 5 5 5 5 5 6 6 6 5.5 KV Clip Centers 70-2R-1C-5.5X 100-3R-1C-5.5X 130-4R-1C-5.5X 150-5R-1C-5.5X 170-6R-1C-5.5X 200-9R-1C-5.5X 230-12R-1C-5.5X 390-18R-2C-5.5X 450-24R-2C-5.5X 2R 3R 4R 5R 6R 9R 12R 18R 24R 70 100 130 150 170 200 230 390 450 " " 17.875" 17.875" 170 250 340 390 500 760 1000 1500 1950 4 4 4 4 4 4 4 5 5 R RATED 8.25 KV Catalog Number 70-2R-1C-8.25 100-3R-1C-8.25 130-4R-1C-8.25 150-5R-1C-8.25 170-6R-1C-8.25 200-9R-1C-8.25 230-12R-1C-8.25 390-18R-2C-8.25 450-24R-2C-8.25 Old Catalog Number Size 2R 3R 4R 5R 6R 9R 12R 18R 24R Maximum Continuous Current @ 40 deg C. 70 100 130 150 170 200 230 390 450 Dim. A (inches) 12" 12" Dim. B (inches) 15.875" 15.875" Minimum Interrupting Rating RMS Amps 190 225 330 440 500 740 955 40 1910 Max Interrupting Rating RMS (Asym) Figure Number 4 4 4 4 4 4 4 5 5 Add w suffix to part number for hookeye attachment. 63

R Rated Medium Voltage Fuses Current Limiting Littelfuse s POWR-GARD medium voltage fuses are available in several bolt-in mounting configurations. Contact factory for custom configurations B Bolt mount BI Bolt-In mount IB Inverted-Bolt mount Refer to illustrations for mounting dimensions. Indicator (2).34" X.660 Slots 1.38" Apart 3" Dia. Indicator Indicator 3" Dia. Indicator Dim.B Dim.B Dim.B (2).34" Holes 1.38" Apart Dim.A Dim.A FIGURE 7 FIGURE 8 FIGURE 9 FIGURE 10 Bolt Mount B Inverted Bolt IB R RATED 2.75 KV Bolt Mount B Catalog Number 70-2R-1B-2.75 100-3R-1B-2.75 130-4R-1B-2.75 150-5R-1B-2.75 170-6R-1B-2.75 200-9R-1B-2.75 230-12R-1B-2.75 390-18R-2B-2.75 450-24R-2B-2.75 Old Catalog Number Size 2R 3R 4R 5R 6R 9R 12R 18R 24R Maximum Continuous Current @ 40 deg C. 70 100 130 150 170 200 230 390 450 Dim. A (inches) 4.6" 7.4" Dim. B (inches) 13" 13" Minimum Interrupting Rating RMS Amps 170 250 240 390 500 760 1000 1500 1950 Max Interrupting Rating RMS (Asym) Figure Number 7 7 7 7 7 7 7 8 8 2.75 KV Inverted Bolt IB 70-2R-1IB-2.75 100-3R-1IB-2.75 130-4R-1IB-2.75 150-5R-1IB-2.75 170-6R-1IB-2.75 200-9R-1IB-2.75 230-12R-1IB-2.75 390-18R-2IB-2.75 450-24R-2IB-2.75 2R 3R 4R 5R 6R 9R 12R 18R 24R 70 100 130 150 170 200 230 390 450 13" 13" 170 250 340 390 500 760 1000 1500 1950 9 9 9 9 9 9 9 10 10 64

65 Catalog Number 70-2R-1BI-5.5 100-3R-1BI-5.5 130-4R-1BI-5.5 150-5R-1BI-5.5 170-6R-1BI-5.5 200-9R-1BI-5.5 230-12R-1BI-5.5 390-18R-2BI-5.5 450-24R-2BI-5.5 480-26R-2BI-5.5 550-30R-2BI-5.5 600-32R-2BI-5.5 650-36R-2BI-5.5 550-30R-3BI-5.5 600-32R-3BI-5.5 650-36R-3BI-5.5 700-38R-3BI-5.5 Dim.B Dim.A Dim.B Dim.A Dim.A 3"Dia. Front View.44" X.91" Slots (1.53" c.t.c.) Indicator Indicator R RATED 5.5 KV Bolt In Mount BI Old Catalog Number Size 2R 3R 4R 5R 6R 9R 12R 18R 24R 26R 30R 32R 36R 30R 32R 36R 38R Maximum Continuous Current @ 40 deg C. 70 100 130 150 170 200 230 390 450 480 550 600 650 550 600 650 700 Dim. A (inches) 3.6 7.6 Dim. B (inches) 18" 18" 18" Minimum Interrupting Rating RMS Amps 170 250 340 390 500 760 1000 1500 1950 2200 2400 2650 2900 Max Interrupting Rating RMS (Asym) Figure Number 11 11 11 11 11 11 11 12 12 12 12 12 12 13 13 13 13 70-2R-1BI-8.25 100-3R-1BI-8.25 130-4R-1BI-8.25 150-5R-1BI-8.25 170-6R-1BI-8.25 200-9R-1BI-8.25 230-12R-1BI-8.25 390-18R-2BI-8.25 450-24R-2BI-8.25 8.25 KV Bolt-In Mount BI 2R 3R 4R 5R 6R 9R 12R 18R 24R 70 100 130 150 170 200 230 390 450 3.6 7.6 18" 18" 190 225 330 400 500 740 955 40 1910 11 11 11 11 11 11 11 12 12 Bolt-In Mount BI 5.5 KV Bolt Mount B 70-2R-1B-5.5 100-3R-1B-5.5 130-4R-1B-5.5 150-5R-1B-5.5 170-6R-1B-5.5 200-9R-1B-5.5 230-12R-1B-5.5 390-18R-2B-5.5 450-24R-2B-5.5 550-30R-2B-5.5 600-32R-2B-5.5 650-36R-2B-5.5 2R 3R 4R 5R 6R 9R 12R 18R 24R 30R 32R 36R 70 100 130 150 170 200 230 390 450 550 600 650 4.6 7.4 8.4 18" 18" 170 250 340 390 500 760 1000 1500 1950 2400 2650 2900 7 7 7 7 7 7 7 8 8 8 8 8 FIGURE 11 FIGURE 12 FIGURE 13 70-2R-1IB-5.5 100-3R-1IB-5.5 130-4R-1IB-5.5 150-5R-1IB-5.5 170-6R-1IB-5.5 200-9R-1IB-5.5 230-12R-1IB-5.5 390-18R-2IB-5.5 450-24R-2IB-5.5 550-30R-2IB-5.5 600-32R-2IB-5.5 650-36R-2IB-5.5 2R 3R 4R 5R 6R 9R 12R 18R 24R 30R 32R 36R 70 100 130 150 170 200 230 390 450 550 600 650 18" 18" 170 250 340 390 500 760 1000 1500 1950 2400 2650 2900 9 9 9 9 9 9 9 10 10 10 10 10 5.5 KV Inverted Bolt IB

E Rated Medium Voltage Fuses Current Limiting E Rated fuses have time current characteristics designed to provide current limiting protection for power transformers, potential transformers, power centers, feeder centers, and unit sub stations. When properly applied, they can protect against high and low value fault currents. NEMA Standards for E rated medium voltage fuses require that fuses rated 100E or less open within 300 seconds (5 minutes) when subjected to an RMS value of 200-240% of the fuse s continuous current rating; and fuses with an E rating larger than 100E must open within 600 seconds (10 minutes) when subjected to an rms current of 220-240% of the fuse s continuous current rating. These values establish one point on the time-current curve. Application Note: Since these fuses are used for the protection of general purpose circuits which may contain transformers, motors, and other equipment producing inrush and/or overload currents, fuses should generally be rated at 0% of the normal full load current, and circuits should be analyzed to ensure that system load currents will not exceed the current rating of the fuse. CHARACTERISTICS Voltage Rating: 2,400 volts 38,000 volts Current Range: 10E 600E OPTIONS Hermetically Sealed for use in hazardous locations (add S suffix to part number) Clip-lock (CL) and bolt-in styles available. 3"DIA 6.38" 9.75" Dim.A (Clip Center) Dim.B FIGURE FIGURE 15 FIGURE 16 E RATED 2.75 Max. KV Catalog Number 10E-1C-2.75 15E-1C-2.75 20E-1C-2.75 25E-1C-2.75 30E-1C-2.75 40E-1C-2.75 50E-1C-2.75 65E-1C-2.75 80E-1C-2.75 100E-1C-2.75 125E-1C-2.75 150E-1C-2.75 200E-1C-2.75 125E-2C-2.75 150E-2C-2.75 175E-2C-2.75 200E-2C-2.75 225E-2C-2.75 250E-2C-2.75 300E-2C-2.75 350E-2C-2.75 400E-2C-2.75 450E-2C-2.75 Old Catalog Number LCX 10E LCX 30E LCX 40E LCX 50E LCX 65E LCX 80E LCX 100E LCX 125E LCX 150E LCX 175E LCX 200E LCX 250E LCX 300E LCX 400E Size 10E 15E 20E 25E 30E 40E 50E 65E 80E 100E 125E 150E 200E 125E 150E 175E 200E 225E 250E 300E 350E 400E 450E Dim. A (inches) 7" 7" Dim. B (inches) 10.875" 10.875" Max Interrupting Rating RMS (Asym) Figure Number 15 15 15 15 15 15 15 15 15 15 66

E Rated Medium Voltage Fuses Current Limiting E RATED 5.5 Max. KV Catalog Number 10E-1C-5.5 15E-1C-5.5 20E-1C-5.5 25E-1C-5.5 30E-1C-5.5 40E-1C-5.5 50E-1C-5.5 65E-1C-5.5 80E-1C-5.5 100E-1C-5.5 125E-1C-5.5 150E-1C-5.5 175E-1C-5.5 200E-1C-5.5 125E-2C-5.5 150E-2C-5.5 175E-2C-5.5 200E-2C-5.5 250E-2C-5.5 300E-2C-5.5 350E-2C-5.5 400E-2C-5.5 450E-2C-5.5 500E-3C-5.5 550E-3C-5.5 600E-3C-5.5 Old Catalog Number LCY 30E LCY 40E LCY 50E LCY 60E LCY 80E LCY 100E LCY 125E LCY 150E LCY 175E LCY 200E LCY 250E LCY 300E LCY 350E LCY 400E LCY 450E Size 10E 15E 20E 25E 30E 40E 50E 65E 80E 100E 125E 150E 175E 200E 125E 150E 175E 200E 250E 300E 350E 400E 450E 500E 550E 660E Dim. A (inches) 12" 12" 12" Dim. B (inches) 15.875" 15.875" 15.875" Max Interrupting Rating RMS (Asym) Diagram 15 15 15 15 15 15 15 15 15 16 16 16 5.5 Max. KV 5NLE-10E 5NLE-15E 5NLE-20E 5NLE-25E 5NLE-30E 5NLE-40E 5NLE-50E 5NLE-65E 5NLE-80E 5NLE-100E 5NLE-125E 5NLE-150E 5NLE-175E 5NLE-200E 5NLE2-225E 5NLE2-250E 5NLE2-300E 5NLE2-350E 5NLE2-400E 5NLE2-450E LCU 30E LCU 40E LCU 50E LCU 65E LCU 80E LCU 100E LCU 125E LCU 150E LCU 175E LCU 200E LCU 250E LCU 300E LCU 350E LCU 400E LCU 450E 10E 15E 20E 25E 30E 40E 50E 65E 80E 100E 125E 150E 175E 200E 225E 250E 300E 350E 400E 450E " 17-7/8" 17-7/8" 15 15 15 15 15 15 67

E Rated Medium Voltage Fuses Current Limiting E RATED 8.25 Max. KV Catalog Number 10E-1C-8.25 15E-1C-8.25 20E-1C-8.25 25E-1C-8.25 30E-1C-8.25 40E-1C-8.25 50E-1C-8.25 65E-1C-8.25 80E-1C-8.25 100E-1C-8.25 125E-1C-8.25 150E-1C-8.25 125E-2C-8.25 150E-2C-8.25 200E-2C-8.25 250E-2C-8.25 300E-2C-8.25 350E-3C-8.25 400E-3C-8.25 Old Catalog Number LDZ 30E LDZ 40E LDZ 50E LDZ 65E LDZ 80E LDZ 100E LDZ 125E LDZ 150E LDZ 125E LDZ 150E LDZ 200E LDZ 250E LDZ 300E LDZ 350Z Size 10E 15E 20E 25E 30E 40E 50E 65E 80E 100E 125E 150E 125E 150E 200E 250E 300E 350E 400E Dim. A (inches) 12" 12" 12" Dim. B (inches) 15-7/8" 15-7/8" 15-7/8" Max Interrupting Rating RMS (Asym) Diagram 15 15 15 15 15 16 16 8.25 Max. KV 8NLE-10E 8NLE-15E 8NLE-20E 8NLE-25E 8NLE-30E 8NLE-40E 8NLE-50E 8NLE-65E 8NLE-80E 8NLE-100E 8NLE2-100E 8NLE2-125E 8NLE2-150E 8NLE2-200E 8NLE2-250E LCZ 30E LCZ 40E LCZ 50E LCZ 65E LCZ 80E LCZ 100E LCZ 100E LCZ 125E LCZ 150E LCZ 200E 10E 15E 20E 25E 30E 40E 50E 65E 80E 100E 100E 125E 150E 200E 250E " " 17-7/8" 17-7/8" 15 15 15 15 15 E RATED 15.5 Max. KV Catalog Number 10E-1C-15.5 15E-1C-15.5 20E-1C-15.5 25E-1C-15.5 30E-1C-15.5 40E-1C-15.5 50E-1C-15.5 65E-1C-15.5 80E-1C-15.5 100E-1C-15.5 65E-2C-15.5 80E-2C-15.5 100E-2C-15.5 125E-2C-15.5 150E-2C-15.5 175E-2C-15.5 200E-2C-15.5 200E-3C-15.5 250E-3C-15.5 300E-3C-15.5 Old Catalog Number LDN 10E LDN 15E LDN 20E LDN 25E LDN 30E LDN 40E LDN 50E LDN 65E LDN 80E LDN 100E LDN 150E LDN 175E Size 10E 15E 20E 25E 30E 40E 50E 65E 80E 100E 65E 80E 100E 125E 150E 175E 200E 200E 250E 300E Dim. A (inches) 15" 15" 15" Dim. B (inches) 18.875" 18.875" 18.875" Max Interrupting Rating RMS (Asym) 60,000 60,000 60,000 Figure Number 15 15 15 15 15 15 15 16 16 16 68

E Rated Medium Voltage Fuses Current Limiting E RATED 15.5 Max. KV Catalog Number 15GSE-65E 15GSE-80E 15GSE-100E 15GSE2-125E 15GSE2-150E 15GSE2-175E 15GSE2-200E Old Catalog Number Size 65E 80E 100E 125E 150E 175E 200E Dim. A (inches) 18" 18" Dim. B (inches) 21-7/8" 21-7/8" Max Interrupting Rating RMS (Asym) 60,000 60,000 Figure Number 15 15 15 15 15.5 Max. KV 15NLE-10E 15NLE-15E 15NLE-20E 15NLE-25E 15NLE-30E 15NLE-40E 15NLE-50E 15NLE-65E 15NLE-80E 15NLE-100E 15NLE2-80E 15NLE2-100E 15NLE2-125E 15NLE2-150E 15NLE2-175E 15NLE2-200E 15NLE3-150E 15NLE3-175E 15NLE3-250E 15NLE3-300E LCN 30E LCN 40E LCN 50E LCN 65E LCN 80ES LCN 100ES LCN 80E LCN 100E LCN 125X LCN 150E LCN 200ED 10E 15E 20E 25E 30E 40E 50E 65E 80E 100E 80E 100E 125E 150E 175E 200E 150E 175E 250E 300E 20" 20" 20" 23-7/8" 23-7/8" 23-7/8" 60,000 60,000 60,000 15 15 15 15 15 15 16 16 16 16 E RATED 25.8 Max. KV Catalog Number 15E-1C-25.8 20E-1C-25.8 25E-1C-25.8 30E-1C-25.8 40E-1C-25.8 50E-1C-25.8 65E-2C-25.8 80E-2C-25.8 100E-2C-25.8 Old Catalog Number Size 15E 20E 25E 30E 40E 50E 65E 80E 100E Dim. A (inches) 21" 21" Dim. B (inches) 24-5/8" 24-5/8" Max Interrupting Rating RMS (Asym) 40,000 40,000 Figure Number 15 15 15 E RATED 38 Max. KV Catalog Number 3E-1C-38.0 7E-1C-38.0 10E-1C-38.0 15E-1C-38.0 20E-1C-38.0 25E-1C-38.0 30E-1C-38.0 40E-1C-38.0 50E-2C-38.0 65E-2C-38.0 80E-2C-38.0 Old Catalog Number Size 3E 7E 10E 15E 20E 25E 30E 40E 50E 65E 80E Dim. A (inches) 27" 27" Dim. B (inches) 30-5/8" 30-5/8" Max Interrupting Rating RMS (Asym) 20,000 20,000 Figure Number 15 15 15 69

E Rated Medium Voltage Fuses Current Limiting Clip Lock Design 4.31 7.94 11.56 The clip lock type designs ensures a positive contact between the fuse and the connection cam. The fuse s clip lock tab slides in between the clip casting and the cam to prevent the fuse from slipping or blowing out of the holder. This positive contact improves heat dissipation and allows fuses to run cooler. 1.25 A B FIGURE 17 FIGURE 18 1.25 FIGURE 19 3.0.25 E RATED 5.5 Max. KV Clip Lock Catalog Number 10E-1CL-5.5 15E-1CL-5.5 20E-1C-5.5 25E-1CL-5.5 30E-1CL-5.5 40E-1CL-5.5 50E-1CL-5.5 65E-1CL-5.5 80E-1CL-5.5 100E-1CL-5.5 125E-1CL-5.5 150E-1CL-5.5 225E-2CL-5.5 250E-2CL-5.5 300E-2CL-5.5 350E-2CL-5.5 400E-2CL-5.5 450E-2CL-5.5 500E-3CL-5.5 550E-3CL-5.5 600E-3CL-5.5 Old Catalog Number Size 10E 15E 20E 25E 30E 40E 50E 65E 80E 100E 125E 150E 225E 250E 300E 350E 400E 450E 500E 550E 600E Dim. A (inches) 16.38" 17.38" 17.38" Dim. B (inches) 15.13" 16.13" 16.13" Max Interrupting Rating RMS (Asym) Figure Number 17 17 17 17 17 17 17 17 17 17 17 17 18 18 18 18 18 18 19 19 19 E RATED 8.25 Max. KV Clip Lock Catalog Number 10E-1CL-8.25 15E-1CL-8.25 20E-1C-8.25 25E-1CL-8.25 30E-1CL-8.25 40E-1CL-8.25 50E-1CL-8.25 65E-1CL-8.25 80E-1CL-8.25 100E-1CL-8.25 125E-2CL-8.25 150E-2CL-8.25 175E-2CL-8.25 200E-2CL-8.25 225E-2CL-8.25 250E-2CL-8.25 300E-2CL-8.25 350E-3CL-8.25 Old Catalog Number Size 10E 15E 20E 25E 30E 40E 50E 65E 80E 100E 125E 150E 175E 200E 225E 250E 300E 350E Dim. A (inches) 17.38" 17.38" 17.38" Dim. B (inches) 16.13" 16.13" 16.13" Max Interrupting Rating RMS (Asym) Figure Number 17 17 17 17 17 17 17 17 17 17 18 18 18 18 18 18 18 19 E RATED 15.5 Max. KV Clip Lock Catalog Number 10E-1CL-15.5 15E-1CL-15.5 20E-1CL-15.5 25E-1CL-15.5 30E-1CL-15.5 40E-1CL-15.5 50E-1CL-15.5 65E-1CL-15.5 80E-1CL-15.5 100E-1CL-15.5 125E-2CL-15.5 150E-3CL-15.5 175E-3CL-15.5 200E-3CL-15.5 225E-3CL-15.5 250E-3CL-15.5 300E-3CL-15.5 Old Catalog Number Size 10E 15E 20E 25E 30E 40E 50E 65E 80E 100E 125 150E 175E 200E 225E 250E 300E Dim. A (inches) 19.8" 22.81" 22.81" 22.81" Dim. B (inches) 18.1" 21.13" 19.1" 19.1" Max Interrupting Rating RMS (Asym) 60,000 60,000 60,000 60,000 Figure Number 17 17 17 17 17 17 17 17 17 17 18 19 19 19 19 19 19 70

E Rated Potential Transformer Fuses Current Limiting Potential Transformer (PT) fuses are current limiting fuses with high interrupting ratings designed for the protection of potential transformers. Application Note: When applying fuses for the protection of transformers, the magnetizing current inrush must be considered. The characteristics of the inrush, which can be matched with a fuse s time-current curve, should be available from the transformer manufacturer. CHARACTERISTICS Voltage Rating: 600VAC 25,500 VAC Current Range: 1/2E 10E B A E PT 600 Volt Catalog Number 3E-4PT-6 5E-4PT-6 7E-4PT-6 10E-4PT-6 Old Catalog Number Size 3E 5E 7E 10E Length Dim. A (inches) 4.625 4.625 4.625 4.625 Diameter Dim. B (inches) 0.8125 0.8125 0.8125 0.8125 Max Interrupting Rating RMS (Asym) 62,500 62,500 62,500 62,500 2.4 Max. KV 1E-4PT-2.4 2E-4PT-2.4 LCD 1E-4 LCD 2E-4 1E 2E 4.625 4.625 0.8125 0.8125 40,000 40,000 2.75 Max. KV 1E-6PT-2.75 2E-6PT-2.75 3E-6PT-2.75 1E-8PT-2.75 2E-8PT-2.75 3E-8PT-2.75 1E 2E 3E 1E 2E 3E 7.375 7.375 7.375 9.5 9.5 9.5 1.625 1.625 1.625 1.625 1.625 1.625 37,500 37,500 37,500 50,000 50,000 50,000 4.8 Max. KV 1E-5PT-4.8 2E-5PT-4.8 LCE 1E-4 LCE 2E-4 1E 2E 5.5 5.5 0.8125 0.8125 50,000 50,000 5.5 Max. KV 1/2E-6PT-5.5 1E-6PT-5.5 2E-6PT-5.5 3E-6PT-5.5 5E-6PT-5.5 1/2E-8PT-5.5 1E-8PT-5.5 2E-8PT-5.5 3E-8PT-5.5 5E-8PT-5.5 10E-8PT-5.5 LCQ.5E LCQ 1E LCQ 2E LCQ 3E LCQ 5E LCQ 10E 1/2E 1E 2E 3E 5E 1/2E 1E 2E 3E 5E 10E 7.375 7.375 7.375 7.375 7.375 9.5 9.5 9.5 9.5 9.5 9.5 1.625 1.625 1.625 1.625 1.625 1.625 1.625 1.625 1.625 1.625 1.625 37,500 37,500 37,500 37,500 37,500 37,500 37,500 37,500 37,500 37,500 37,500 8.25 Max. KV 1/2E-8PT-8.25 1E-8PT-8.25 2E-8PT-8.25 3E-8PT-8.25 1/2E 1E 2E 3E 9.5 9.5 9.5 9.5 1.625 1.625 1.625 1.625 50,000 50,000 50,000 50,000 15.5 Max. KV 1/2E-11PT-15.5 1E-11PT-15.5 2E-11PT-15.5 3E-11PT-15.5 3E-16PT-15.5 5E-16PT-15.5 LCT.5E LCT 1E LCT 2E LCT 3E 1/2E 1E 2E 3E 3E 5E 12.875 12.875 12.875 12.875 17.5 17.5 1.625 1.625 1.625 1.625 1.625 1.625 25.5 Max. KV 1/2E-16PT-25.5 1E-16PT-25.5 LCJ 1E-4 LCJ 2E-4 1/2E 1E 17.5 17.5 1.625 1.625 43,500 43,500 71

Live Parts Live parts are available for mounting E, R, and PT single, double, and triple barrel fuses. Mounting clips are available for ferrule type and clip lock style fuses. All clips are sold in pairs. Contact factory for additional live parts. Part Number: 700-500* For use with all 13/16" diameter PT fuses..78.08.31.71.30.08 Part Number: 700-530*.41 X1.06 SLOT 1.50 1.56 4.00 For use with all 3 diameter fuses. 1.15.05 3.08 4.66 * One Pair.78.63 * One Pair Part Number: 700-520-CL* Clip Lock Design (For CL-) Mounting Details for Clip Lock 3.63 TRIPLE BARREL 3.63 DOUBLE BARREL Bottom Lever In Closed Position 4.85 SINGLE BARREL * One Pair Blown Fuse Indicator 2.00 4.9 TOP VIEW 3.75 2.00 Top Lever in Open Position A 1.00 1.75.56 Dia. (2) Holes 2.00 For Mounting Cable/Bus.44 DIA. (2) HOLES 72

FUSES HHC MEDIUM VOLTAGE FUSES FOR CAPACITORS NORTH AMERICAN STYLE SIBA Capacitor protection fuses can easily be fitted direct onto capacitor bushings, because they are fitted with threaded holes at both ends. Their electrical characteristic suits the protection requirements of capacitors. The capacitor fuses are available in the following ratings: Voltage ratings: Amp. ratings: 4.8 / 7.2 / 15.5 kv 6.3-250 A Features/Benefits Standards: IEC 60 282-1 IEC 60 549 High interrupting rating 63 ka Characteristic following capacitor protection needs for back up protection Suitable for direct fitting onto capacitor bushing Cartridge type current limiting Special mounting brackets available on request HHC 1

HHC FUSES Selection Guide Thread Rated Voltage Diameter Class Part No. Selector Techn. AC mm Guide Data kv Page Page 1/2 UNC 4.8 63.5 Back up 30 349 21 HHC 3 HHC 9 1/2 UNC 4.8 76 Back up 30 350 21 HHC 3 HHC 9 1/2 UNC 4.8 76 Back up 30 351 21 HHC 3 HHC 9 1/2 UNC 7.2 63.5 Back up 30 352 21 HHC 4 HHC 9 1/2 UNC 7.2 76 Back up 30 353 21 HHC 4 HHC 9 1/2 UNC 15.5 63.5 Back up 30 354 21 HHC 5 HHC 10 M16 4.8 63.5 Back up 30 356 21 HHC 6 HHC 10 M16 4.8 76 Back up 30 357 21 HHC 6 HHC 10 M16 4.8 76 Back up 30 358 21 HHC 6 HHC 10 M16 7.2 63.5 Back up 30 359 21 HHC 7 HHC 11 M16 7.2 76 Back up 30 360 21 HHC 7 HHC 11 M16 15.5 63.5 Back up 30 361 21 HHC 8 HHC 11 HHC 2

FUSES HHC MEDIUM VOLTAGE FUSES FOR CAPACITORS NORTH AMERICAN STYLE Rated voltage Class thread Standard AC 4.8 kv Back up 1/2 UNC IEC 60 282-1 IEC 60 549 Rated Part No. D= Diameter Rated breaking Weight Pack current inch mm capacity (kg/1) ka 6.3 A 30 349 21 2.5 63.5 63 1.8 1 10 A 30 349 21 2.5 63.5 63 1.8 1 16 A 30 349 21 2.5 63.5 63 1.8 1 20 A 30 349 21 2.5 63.5 63 1.8 1 25 A 30 349 21 2.5 63.5 63 1.8 1 31.5 A 30 349 21 2.5 63.5 63 1.8 1 40 A 30 349 21 2.5 63.5 63 1.8 1 50 A 30 349 21 2.5 63.5 63 1.8 1 63 A 30 349 21 2.5 63.5 63 1.8 1 80 A 30 349 21 2.5 63.5 63 1.8 1 100 A 30 349 21 2.5 63.5 63 1.8 1 125 A 30 350 21 2.99 76 63 2.5 1 160 A 30 350 21 2.99 76 63 2.5 1 200 A 30 351 21 2.99 76 63 3.6 1 250 A 30 351 21 2.99 76 63 3.6 1 30 349 21/30 350 21 E 10.00 (254 mm) L 10.75 (273 mm) F 1.57 (40 mm) 30 351 21 E.13 (359 mm) L.88 (378 mm) F 1.57 (40 mm) HHC 3

HHC FUSES MEDIUM VOLTAGE FUSES FOR CAPACITORS NORTH AMERICAN STYLE Rated voltage Class thread Standard AC 7.2 kv Back up 1/2 UNC IEC 60 282-1 IEC 60 549 Rated Part No. D= Diameter Rated breaking Weight Pack current inch mm capacity (kg/1) ka 6.3 A 30 352 21 2.5 63.5 63 1.8 1 10 A 30 352 21 2.5 63.5 63 1.8 1 16 A 30 352 21 2.5 63.5 63 1.8 1 20 A 30 352 21 2.5 63.5 63 1.8 1 25 A 30 352 21 2.5 63.5 63 1.8 1 31.5 A 30 352 21 2.5 63.5 63 1.8 1 40 A 30 352 21 2.5 63.5 63 1.8 1 50 A 30 352 21 2.5 63.5 63 1.8 1 63 A 30 352 21 2.5 63.5 63 1.8 1 80 A 30 352 21 2.5 63.5 63 1.8 1 100 A 30 352 21 2.5 63.5 63 1.8 1 125 A 30 353 21 2.99 76 63 3.6 1 160 A 30 353 21 2.99 76 63 3.6 1 200 A 30 353 21 2.99 76 63 3.6 1 30 352 21 E 10.00 (254 mm) L 10.75 (273 mm) F 1.57 (40 mm) 30 353 21 E.13 (359 mm) L.88 (378 mm) F 1.57 (40 mm) HHC 4

FUSES HHC MEDIUM VOLTAGE FUSES FOR CAPACITORS NORTH AMERICAN STYLE Rated voltage Class thread Standard AC 15.5 kv Back up 1/2 UNC IEC 60 282-1 IEC 60 549 Rated Part No. D= Diameter Rated breaking Weight Pack current inch mm capacity (kg/1) ka 6.3 A 30 354 21 2.5 63.5 63 2.5 1 10 A 30 354 21 2.5 63.5 63 2.5 1 16 A 30 354 21 2.5 63.5 63 2.5 1 20 A 30 354 21 2.5 63.5 63 2.5 1 25 A 30 354 21 2.5 63.5 63 2.5 1 31.5 A 30 354 21 2.5 63.5 63 2.5 1 40 A 30 354 21 2.5 63.5 63 2.5 1 50 A 30 354 21 2.5 63.5 63 2.5 1 63 A 30 354 21 2.5 63.5 63 2.5 1 80 A 30 354 21 2.5 63.5 63 2.5 1 100 A 30 354 21 2.5 63.5 63 2.5 1 E.13 (359 mm) L.88 (378 mm) F 1.57 (40 mm) HHC 5

HHC FUSES MEDIUM VOLTAGE FUSES FOR CAPACITORS NORTH AMERICAN STYLE Rated voltage Class thread Standard AC 4.8 kv Back up M16 IEC 60 282-1 IEC 60 549 Rated Part No. D= Diameter Rated breaking Weight Pack current inch mm capacity (kg/1) ka 6.3 A 30 356 21 2.5 63.5 63 1.8 1 10 A 30 356 21 2.5 63.5 63 1.8 1 16 A 30 356 21 2.5 63.5 63 1.8 1 20 A 30 356 21 2.5 63.5 63 1.8 1 25 A 30 356 21 2.5 63.5 63 1.8 1 31.5 A 30 356 21 2.5 63.5 63 1.8 1 40 A 30 356 21 2.5 63.5 63 1.8 1 50 A 30 356 21 2.5 63.5 63 1.8 1 63 A 30 356 21 2.5 63.5 63 1.8 1 80 A 30 356 21 2.5 63.5 63 1.8 1 100 A 30 356 21 2.5 63.5 63 1.8 1 125 A 30 357 21 2.99 76 63 2.5 1 160 A 30 357 21 2.99 76 63 2.5 1 200 A 30 358 21 2.99 76 63 3.6 1 250 A 30 358 21 2.99 76 63 3.6 1 30 356 21/30 357 21 E 10.00 (254 mm) L 10.75 (273 mm) F 1.57 (40 mm) 30 358 21 E.13 (359 mm) L.88 (378 mm) F 1.57 (40 mm) HHC 6

FUSES HHC MEDIUM VOLTAGE FUSES FOR CAPACITORS NORTH AMERICAN STYLE Rated voltage Class thread Standard AC 7.2 kv Back up M16 IEC 60 282-1 IEC 60 549 Rated Part No. D= Diameter Rated breaking Weight Pack current inch mm capacity (kg/1) ka 6.3 A 30 359 21 2.5 63.5 63 1.8 1 10 A 30 359 21 2.5 63.5 63 1.8 1 16 A 30 359 21 2.5 63.5 63 1.8 1 20 A 30 359 21 2.5 63.5 63 1.8 1 25 A 30 359 21 2.5 63.5 63 1.8 1 31.5 A 30 359 21 2.5 63.5 63 1.8 1 40 A 30 359 21 2.5 63.5 63 1.8 1 50 A 30 359 21 2.5 63.5 63 1.8 1 63 A 30 359 21 2.5 63.5 63 1.8 1 80 A 30 359 21 2.5 63.5 63 1.8 1 100 A 30 359 21 2.5 63.5 63 1.8 1 125 A 30 360 21 2.99 76 63 2.5 1 160 A 30 360 21 2.99 76 63 2.5 1 200 A 30 360 21 2.99 76 63 2.5 1 30 359 21 E 10.00 (254 mm) L 10.75 (273 mm) F 1.57 (40 mm) 30 360 21 L1.13 (359 mm) L2.88 (378 mm) F 1.57 (40 mm) HHC 7

HHC FUSES MEDIUM VOLTAGE FUSES FOR CAPACITORS NORTH AMERICAN STYLE Rated voltage Class thread Standard AC 15.5 kv Back up M16 IEC 60 282-1 IEC 60 549 Rated Part No. D= Diameter Rated breaking Weight Pack current inch mm capacity (kg/1) ka 6.3 A 30 361 21 2.5 63.5 63 2.5 1 10 A 30 361 21 2.5 63.5 63 2.5 1 16 A 30 361 21 2.5 63.5 63 2.5 1 20 A 30 361 21 2.5 63.5 63 2.5 1 25 A 30 361 21 2.5 63.5 63 2.5 1 31.5 A 30 361 21 2.5 63.5 63 2.5 1 40 A 30 361 21 2.5 63.5 63 2.5 1 50 A 30 361 21 2.5 63.5 63 2.5 1 63 A 30 361 21 2.5 63.5 63 2.5 1 80 A 30 361 21 2.5 63.5 63 2.5 1 100 A 30 361 21 2.5 63.5 63 2.5 1 E.13 (359 mm) L.88 (378 mm) F 1.57 (40 mm) HHC 8