High reliability against cyclic and peak current loads / age resistant due to high motor start up currents
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- Norah Owen
- 5 years ago
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1 HHM High Voltage Fuses Motor Circuit Protection DIN and British Standard SIBA Motor Rated Fuses are available in - German DIN Standard and - British Standard Design The large variety in body sizes / mounting style / voltage and amp rating allow great flexibility for the designer of switchboard panels. Standards: - Dimensions: DIN and BS Electrical: IEC IEC IEC Class: Voltage Ratings: Current Ratings: Current Limiting / Back up AC kv A Features / Benefits Protection of Motor circuits according to IEC High reliability against cyclic and peak current loads / age resistant due to high motor start up currents Low power losses / minimizing temperature increase in narrow contactor enclosures Low minimum interrupting currents for operation of overcurrents in the range x rated current Availability of SIBA-Temperature limiters for switchgear protection against excessive temperature rise in DIN housing up to 160 A Type tested according to IEC in cooperation with major European panel builders Available in DIN and BS 2692 dimensions HHM 1
![HHM High Voltage Fuses Motor Circuit Protection DIN and BS Standard Selection Guide Size Rated Voltage Class Part No. Selector Techn. AC Guide Data [kv] [Page] [Page] TA2 3.6 Back-up 30 269 56.](/docs-images/83/87788260/images/2-1.jpg "HHM 3 HHM 12 TA2 3.6 Back-up 30 270 56. HHM 4 HHM 12 TA4 7.2 Back-up 30 271 56. HHM 5 HHM 12 TA4 7.2 Back-up 30 272 56. HHM 6 HHM 12 E= 292 mm 3.6 Back-up 30 201 53. HHM 7 HHM 13 E= 292 mm 3.")
2 HHM High Voltage Fuses Motor Circuit Protection DIN and BS Standard Selection Guide Size Rated Voltage Class Part No. Selector Techn. AC Guide Data [kv] [Page] [Page] TA2 3.6 Back-up HHM 3 HHM 12 TA2 3.6 Back-up HHM 4 HHM 12 TA4 7.2 Back-up HHM 5 HHM 12 TA4 7.2 Back-up HHM 6 HHM 12 E= 292 mm 3.6 Back-up HHM 7 HHM 13 E= 292 mm 3.6 Back-up HHM 7 HHM 13 E= 292 mm 3.6 Back-up HHM 7 HHM 13 E= 292 mm 3.6 Back-up HHM 7 HHM 13 E= 442 mm 7.2 Back-up HHM 7 HHM 13 E= 442 mm 7.2 Back-up HHM 7 HHM 13 E= 442 mm 7.2 Back-up HHM 7 HHM 13 E= 442 mm 7.2 Back-up HHM 7 HHM 13 E= 442 mm 12 Back-up HHM 8 HHM 14 E= 442 mm 12 Back-up HHM 8 HHM 14 E= 442 mm 12 Back-up HHM 8 HHM 14 E= 442 mm 12 Back-up HHM 8 HHM 14 E= 442 mm Back-up HHM 9 HHM 15 E= 442 mm Back-up HHM 9 HHM 15 E= 442 mm Back-up HHM 9 HHM 15 L= 254 mm 3.6 Back-up HHM 10 HHM 16 L= 254 mm 3.6 Back-up HHM 10 HHM 16 L= 254 mm 3.6 Back-up HHM 10 HHM 16 L= 403 mm 7.2 Back-up HHM 11 HHM 17 L= 403 mm 7.2 Back-up HHM 11 HHM 17 L= 403 mm 7.2 Back-up HHM 11 HHM 17 HHM 2
3 HHM High Voltage Fuses Motor Circuit Protection DIN and BS Standard Size Rated Voltage Standard TA 2 AC 3.6 kv BS IEC IEC Rated Part No. Rated Weight Pack Technical Current Breaking Current Data [A] [ka] [kg/1] [Page] HHM HHM HHM HHM HHM HHM HHM HHM HHM HHM 12 A (254 mm) B 2.56 (65 mm) C (38 mm) C (32 mm) D 3.00 (76 mm) E (305 mm) F 0.12 (3 mm) H 3.10 (79 mm) I 0.90 (23 mm) J 0.43 (11 mm) L (337 mm) N 0.50 (13 mm) O 0.30 (8 mm) HHM 3
4 HHM High Voltage Fuses Motor Circuit Protection DIN and BS Standard Size Rated Voltage Standard TA 2 AC 3.6 kv BS IEC IEC Rated Part No. Rated Weight Pack Technical Current Breaking Current Data [A] [ka] [kg/1] [Page] 355 * HHM * HHM * HHM 12 * 2 single fuses A (403 mm) B 2.56 (65 mm) C (38 mm) C (32 mm) D 3.00 (76 mm) E (454 mm) F 0.24 (6 mm) G 3.22 (82 mm) H 6.20 (158 mm) I 0.90 (23 mm) J 0.43 (11 mm) L (486 mm) N 0.50 (13 mm) O 0.30 (8 mm) HHM 4
5 HHM High Voltage Fuses Motor Circuit Protection DIN and BS Standard Size Rated Voltage Standard TA 4 AC 7.2 kv BS IEC IEC Rated Part No. Rated Weight Pack Technical Current Breaking Current Data [A] [ka] [kg/1] [Page] HHM HHM HHM HHM HHM HHM HHM HHM HHM 12 A (403 mm) B 2.56 (65 mm) C (38 mm) C (32 mm) D 3.00 (76 mm) E (454 mm) F 0.12 (3 mm) H 3.10 (79 mm) I 0.90 (23 mm) J 0.43 (11 mm) L (486 mm) N 0.50 (13 mm) O 0.30 (8 mm) HHM 5
6 HHM High Voltage Fuses Motor Circuit Protection DIN and BS Standard Size Rated Voltage Standard TA 4 AC 7.2 kv BS IEC IEC Rated Part No. Rated Weight Pack Technical Current Breaking Current Data [A] [ka] [kg/1] [Page] 315* HHM * HHM * HHM * HHM 12 * 2 single fuses A (403 mm) B 2.56 (65 mm) C (38 mm) C (32 mm) D 3.00 (76 mm) E (454 mm) F 0.24 (6 mm) G 3.22 (82 mm) H 6.20 (158 mm) I 0.90 (23 mm) J 0.43 (11 mm) L (486 mm) N 0.50 (13 mm) O 0.30 (8 mm) HHM 6
7 HHM High Voltage Fuses Motor Circuit Protection DIN and BS Standard DIN Rated Voltage Standard E= 292 mm AC 3.6 kv IEC IEC Rated Part No. D= Diameter Rated Weight Pack Technical Current Breaking Current Data [A] [inch] [mm] [ka] [kg/1] [Page] HHM HHM HHM HHM HHM HHM HHM HHM HHM HHM * HHM * HHM * HHM 13 DIN Rated Voltage Standard E= 442 mm AC 7.2 kv IEC IEC Rated Part No. D= Diameter Rated Weight Pack Technical Current Breaking Current Data [A] [inch] [mm] [ka] [kg/1] [Page] HHM HHM HHM HHM HHM HHM HHM HHM HHM HHM * HHM * HHM * HHM 13 * 2 single fuses A 1.77 (45 mm) F 1.30 (33 mm) O 0.40 (10 mm) N 1.38 (36 mm) HHM 00 7
8 HHM High Voltage Fuses Motor Circuit Protection DIN and BS Standard DIN Rated Voltage Standard E= 442 mm AC 12 kv IEC IEC Rated Part No. D= Diameter Rated Weight Pack Technical Current Breaking Current Data [A] [inch] [mm] [ka] [kg/1] [Page] HHM HHM HHM HHM HHM HHM HHM 14 A 1.77 (45 mm) F 1.30 (33 mm) O 0.40 (10 mm) N 1.38 (36 mm) HHM 8
9 HHM High Voltage Fuses Motor Circuit Protection DIN and BS Standard DIN Rated Voltage Standard E= 442 mm AC kv IEC IEC Rated Part No. D= Diameter Rated Weight Pack Technical Current Breaking Current Data [A] [inch] [mm] [ka] [kg/1] [Page] R HHM R HHM R HHM R HHM R HHM R HHM R HHM * R HHM * R HHM ** R HHM ** 1) R HHM 15 *2 single fuses ** 3 single fuses 1) Rated voltage 2,4-4,8 kv A 1.77 (45 mm) F 1.30 (33 mm) O 0.40 (10 mm) N 1.38 (35 mm) HHM 9
10 HHM High Voltage Fuses Motor Circuit Protection DIN and BS Standard Size Rated Voltage L= 254 mm AC 3.6 kv Rated Part No. D= Diameter Rated Weight Pack Technical Current Breaking Current Data [A] [inch] [mm] [ka] [kg/1] [Page] R HHM R HHM R HHM R HHM R HHM R HHM R HHM * R HHM * R HHM ** R HHM ** R HHM 16 *2 single fuses ** 3 single fuses F 1.57 (40 mm) N 0.50 (13 mm) O 0.30 (8 mm) HHM 10
11 HHM High Voltage Fuses Motor Circuit Protection DIN and BS Standard Size Rated Voltage L= 403 mm AC 7.2 kv Rated Part No. D= Diameter Rated Weight Pack Technical Current Breaking Current Data [A] [inch] [mm] [ka] [kg/1] [Page] R HHM R HHM R HHM R HHM R HHM R HHM R HHM * R HHM * R HHM ** R HHM ** R HHM 17 *2 single fuses ** 3 single fuses F 1.57 (40 mm) N 0.50 (13 mm) O 0.30 (8 mm) HHM 11
12 HHM Electrical Characteristics Size Rated Voltage Class TA 2 AC 3.6 kv Back-up Rated Part No. Rated Pre-arcing Total Power Current Breaking Current I 2 t-value I 2 t-value Loss [A] [ka] [A 2 s] [A 2 s] [W] Size Rated Voltage Class TA 4 AC 7.2 kv Back-up Rated Part No. Rated Pre-arcing Total Power Current Breaking Current I 2 t-value I 2 t-value Loss [A] [ka] [A 2 s] [A 2 s] [W] Time-current characteristics and cut-off current diagram please refer to pages HHM 18 and HHM 19 HHM 12
13 Electrical Characteristics HHM DIN Rated Voltage Class E= 292 mm AC 3.6 kv Back-up Rated Part No. Rated Pre-arcing Total Power Current Breaking Current I 2 t-value I 2 t-value Loss [A] [ka] [A 2 s] [A 2 s] [W] DIN Rated Voltage Class E= 442 mm AC 7.2 kv Back-up Rated Part No. Rated Pre-arcing Total Power Current Breaking Current I 2 t-value I 2 t-value Loss [A] [ka] [A 2 s] [A 2 s] [W] Time-current characteristics and cut-off current diagram please refer to pages HHM 20 and HHM 21 HHM 00 13
14 HHM Electrical Characteristics DIN Rated Voltage Class E= 442 mm AC 12 kv Back-up Rated Part No. Rated Pre-arcing Total Power Current Breaking Current I 2 t-value I 2 t-value Loss [A] [ka] [A 2 s] [A 2 s] [W] Time-current characteristics and cut-off current diagram please refer to page HHM 22 HHM 14
15 Electrical Characteristics HHM DIN Rated Voltage Class E= 442 mm AC kv Back-up Rated Part No. Rated Pre-arcing Total Power Current Breaking Current I 2 t-value I 2 t-value Loss [A] [ka] [A 2 s] [A 2 s] [W] R R R R R R R R R R * R * 2.4 kv kv Time-current characteristics and cut-off current diagram please refer to page HHM 23 HHM 15
16 HHM Electrical Characteristics Size Rated Voltage Class L= 254 mm AC 3.6 kv Back-up Rated Part No. Rated Pre-arcing Total Power Current Breaking Current I 2 t-value I 2 t-value Loss [A] [ka] [A 2 s] [A 2 s] [W] R R R R R R R R R R * R Time-current characteristics and cut-off current diagram please refer to page HHM 23 HHM 16
17 Electrical Characteristics HHM Size Rated Voltage Class L= 403 mm AC 7.2 kv Back-up Rated Part No. Breaking Pre-arcing Total Power Current Current I 2 t-value I 2 t-value Loss [A] [ka] [A 2 s] [A 2 s] [W] R R R R R R R R R R * R Time-current characteristics and cut-off current diagram please refer to page HHM 23 HHM 17
18 HHM Technical Data Time-Current Characteristics 3.6 kv BS Standard t(s) Virtual pre-arcing time RMS prospective current I(A) Cut-Off Current Diagram 3.6 kv BS Standard îc (ka) Cut-off current peak Prospective short circuit current I(kA) HHM 18
19 Technical Data HHM Time-Current Characteristics 7.2 kv BS Standard t(s) Virtual pre-arcing time RMS prospective current I(A) Cut-Off Current Diagram 7.2 kv BS Standard îc (ka) Cut-off current peak Prospective short circuit current I(kA) HHM 19
20 HHM Technical Data Time-Current Characteristics 3.6 kv DIN Standard t(s) Virtual pre-arcing time RMS prospective current I(A) Cut-Off Current Diagram 3.6 kv DIN Standard îc (ka) Cut-off current peak Prospective short circuit current I(kA) HHM 20
21 Technical Data HHM Time-Current Characteristics 7.2 kv DIN Standard t(s) Virtual pre-arcing time RMS prospective current I(A) Cut-Off Current Diagram 7.2 kv DIN Standard îc (ka) Cut-off current peak Prospective short circuit current I(kA) HHM 21
22 HHM Technical Data Time-Current Characteristics 12 kv DIN Standard t(s) Virtual pre-arcing time RMS prospective current I(A) Cut-Off Current Diagram 12 kv DIN Standard îc (ka) Cut-off current peak Prospective short circuit current I(kA) HHM 22
23 Technical Data HHM Time-Current Characteristics R-rated t(s) Virtual pre-arcing time RMS prospective current I(A) Cut-Off Current Diagram R-rated îc (ka) Cut-off current peak Prospective short circuit current I(kA) HHM 23
24 HHM High Voltage Fuses Motor Circuit Protection DIN and BS Standard Application Guide for SIBA Motor Circuit Protection Fuses The SIBA HHM fuse-links fulfil all requirements according to IEC Specification for high-voltage fuse-links for motor circuit application. The specific characteristic allows a full short circuit protection for the motor circuit components as well as the capability to withstand inrush currents and cyclic current impulses. Application guideline The suitable rated current of the fuse-link is mainly determined by two important parameters: the inrush-current during the run-up period of the motor due to high magnetising-currents the objective to create less heating in the enclosure In general, the inrush current can be calculated as five to six times the rated current of the motor. For practical purposes the run-up time of different motor types are separated into three main categories: Table 1. run-up times run-up times [s] example of motor type 6 pump-motor 15 mill-motor fan-motor To avoid any ageing due to frequent switching-operations, the following derating-coefficients have to taken into account: Table 2: derating-coefficients maximum starts per hour derating-coefficient 2 0,59 4 0,53 8 0, , ,39 Note: Two immediate successive starts are admissible. HHM 24
25 HHM High Voltage Fuses Motor Circuit Protection DIN and BS Standard Application Guide for SIBA Motor Circuit Protection Fuses Selection-procedure > determine the inrush-current (individually given, or multiply the normal operating of the motor by 6) and divide it by the derating-coefficient which corresponds with the quantity of starts per hour (table 2) > transfer this value to the X-axis of the time-current characteristic of the fuse-link > link the corresponding run-up time to the Y-axis of the time-current characteristic > mark the crossing-point of these X- and Y-values The time-current curve of the fuse-link, which is placed directly on the right side next to the marked point, reflects the correct rated current of the fuse-link to be chosen. This rated current of the fuse-link must be at least 1.3 times the normal operating current of the motor. In some cases the next highest rated current has to be taken. The above-mentioned procedure is valid for direct-staring motors as well as for assisted-starting. In this case the calculated inrush current is decreased and a smaller rated current of the fuse-link could be chosen as in the case of direct-starting. For such applications an unacceptable temperature increase must be avoided by a rated current of the fuse-link higher than or equal to 1.3 times the normal operating current of the motor. HHM 00 25
26 HHM Electrical Characteristics Recommendation Motor Circuit Application Run-up Time 6 s Motor starts / h Fuse-link rated current Motor starting current (A) Fuse selection for motors with a run-up time not exceeding 6 seconds; e.g. pump motors. Two immediate successive starts are admissible. HHM 26
27 Electrical Characteristics HHM Recommendation Motor Circuit Application Run-up Time 15 s Motor starts / h Fuse-link rated current Motor starting current (A) Fuse selection for motors with a run-up time not exceeding 15 seconds; e.g. fan motors. Two immediate successive starts are admissible. HHM 27
28 HHM Electrical Characteristics Recommendation Motor Circuit Application Run-up Time 30 s Motor starts / h Fuse-link rated current Motor starting current (A) Fuse selection for motors with a run-up time not exceeding 30 seconds; e.g. mill motors. Two immediate successive starts are admissible. HHM 28
29 Electrical Characteristics HHM Recommendation Motor Circuit Application Run-up Time 6 s Motor starts / h Fuse-link rated current Motor starting current (A) Fuse selection for motors with a run-up time not exceeding 6 seconds; e.g. pump motors. Two immediate successive starts are admissible. HHM 29
30 HHM Electrical Characteristics Recommendation Motor Circuit Application Run-up time 15 s Motor starts / h Fuse-link rated current Motor starting current (A) Fuse selection for motors with a run-up time not exceeding 15 seconds; e.g. fan motors. Two immediate successive starts are admissible. HHM 30
31 Electrical Characteristics HHM Recommendation Motor Circuit Application Run-up Time 30 s Motor starts / h Fuse-link rated current Motor starting current (A) Fuse selection for motors with a run-up time not exceeding 30 seconds; e.g. mill motors. Two immediate successive starts are admissible. HHM 31
32 HHM Notes HHM 32
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