Low-voltage fuses: fuse systems A, B and F. Test specification: IEC (2013) Edition together with : IEC (2009) Edition 4.

Transcription

1 Test report form: IEC HD Edition 5.0 Document date: 27 th October 2014 Test object: Low-voltage fuses: fuse systems A, B and F Test specification: IEC (2013) Edition together with : IEC (2009) Edition 4.1 HD (2013) - together with EN (2007) + A1 (2009) Content: Description Pageform Front sheet 01 Signature of the competent persons who performed the tests 02 The samples under tests 03 Characteristics of fuses-links 04 and 05 Characteristics of fuses-holders 06 conditions for construction 07 Test table Test table Test table Test table Tests description 12 to 52 Additional page 53 Number of pageforms: 54 LOVAG Test report Formsheet Valid from : Chairman of Technical Committee TRF IEC HD Ed Author: ASEFA Dr. S. Manganaro

2 Page... /... Test laboratory:... Test Report No.... Client:... Manufacturer:... Test object:... Type designation:... Date(s) of test(s):... Test specification: IEC (2013) Edition together with : IEC (2009) Edition 4.1 HD (2013) - together with EN (2007) + A1 (2009) Test sequence(s): According to table(s). of IEC /EN Test results: The Record of Proving Test consists of:... pages LOVAG test report forms and... other pages All the measurement uncertainties are within the limits of LOVAG General Instruction G2 Measurement Uncertainties Date of issue:.. Authorized Representative of LOVAG Certification Body Name:.. Function:. Signature: Responsible Test Laboratory Name:.. Function:. Signature: Note: The test results relate only to the items tested. The test report shall not be reproduced except in full without the written approval of the test laboratory. TRF IEC HD Ed. 5.0, form 01

3 SIGNATURES OF THE COMPETENT PERSONS FOR PERFORMED THE TESTS Listing of test sequence or subclause (*) Test item description Competent persons who performed the tests Name Date Signature (*) See page form 3 for sample(s) under testing and report page Responsible Observer Name Position: Organisation:.. Address:.. Date Signature Ed. 5.0, form 02

4 Test report no.:... Page... /... THE SAMPLES UNDER TESTS No. SAMPLE Identification no. No. Sequence or subclause Ue (V) Ratings Ie (A) Specific rating Page no. Comments Test laboratory: TRF IEC HD Ed. 5.0, form 03

5 Test report No.... Page... /... CHARACTERISTICS OF FUSE-LINKS Rated voltage, as specified :... V Rated current(s) (in accordance with specified values)... A Type... Kind of current Size... Maxi rated power dissipation... W Rated frequency if a.c.... Hz Limits of time-current characteristics based on reference ambient temperature Ta = 20 C or Time-current zones deviated from standardized or Available in manufacturer documentation (catalogue) Rated breaking capacity of fuse-link a.c. A / d.c....a corresponds to the rated voltage... /... V and is equal or higher than given minimum (in subsequent part of this standard) A Cut-off current and I²t characteristics referred to the values of voltage, frequency and power factor Cut-off current characteristics, if required, given by the manufacturer according with figure 3 (IEC ) Pre-arcing and I²t characteristics for pre-arcing times of less than 0,1 s down to a time corresponding to the rated breaking capacity given by the manufacturer Operating I²t characteristics with specified voltages as parameter for pre-arcing times less than 0,1 s given by the manufacturer Ed. 5.0, form 04

6 Test report No.... Page... /... MARKING Fuse-link (s) except small fuse- link (s) marked by : Name of manufacturer or trade mark which enables identification of fuse-links Manufacturer's identification reference enabling to find all characteristics listed in Sub-clause Rated voltage Rated current (s)...v...a Rated current of "gm" type as specified in sub-clause Note 2 :... A /...A Breaking range and utilisation category (if applicable) (Sub-clause ) Kind of current Rated frequency (Sub-clause 5.4.) if applicable For systems A and B: Fuse-links are marked as described in Table 104 For system F: Fuse-links are marked as described in Table 608 Small fuse-links marked by : Trade mark List reference of manufacturer Rated voltage Rated current (s)...v...a Symbols for the kind of current and frequency... in accordance with IEC 417 Fuse-links with isolated gripping-lugs marked in a place easily visible from the front with symbol of Fig. 112 :... Ed. 5.0, form 05

7 Test report No.... Page... /... CHARACTERISTICS OF FUSES-HOLDERS Rated voltage.. V as specified : Rated current(s) (in accordance with specified values) A Kind of current Rated frequency if a.c. Rated power acceptance Hz W Size Number of poles Peak withstand current ka Degree of protection (complete fuses) IP... Marking Fuse-holder marked by : Name of manufacturer or trade mark Identification of fuse-holder Manufacturer identification reference enabling to find all characteristics listed in Sub-clause Rated voltage Rated current Kind of current. and rated frequency V A Hz Ed. 5.0, form 06

8 Test report No.... Page... /... conditions for construction : Type of metal of the parts gripping the conductor G Replacing of the fuse-link easy and safe G Contact force is not transmitted through insulating material other then ceramic or other material with characteristic not less suitable G There is sufficient resilience in the metallic parts to compensate any possible shrinkage or other deformation of the insulating material G Terminals do not turn or displace when the connecting screws are tightened G Terminals such, that the conductors cannot be displaced G Parts gripping the conductors are of the metal G Terminals readily accessible under the intended conditions of installation Terminals for unprepared copper conductors enable accepting min. and max. cross-sectional area of conductors stated in Table D Terminals capable to accept conductors of cross-sectional area from... mm² to... mm² Terminals suitable for Cu conductors Terminals suitable for Cu and Al conductors Contact silver plated Fuse-link has an indicator Ed. 5.0, form 07

9 Type test according to : IEC, EN / IEC, HD TESTING OF FUSE-LINKS OR LARGEST RATED CURRENT OF HOMOGENEOUS SERIES Test table 11 comprises the following tests : Sub-clause Test Page form G Dimensions 13 to G Resistance G 8.3 Temperature-rise, power dissipation G a) Conventional non-fusing current G b) Conventional fusing current G Rated current G Time-current characteristics, gates 21 to G Overload G Conventional cable overload protection G Indicating device / striker G 8.5 Breaking capacity 27 to 35/36 to G 8.6 Cut-off current characteristics G 8.7 I²t characteristics, overcurrent discrimination 43 and G 8.8 Degree of protection G 8.9 Resistance to heat G 8.10 Non-deterioration of contacts 46 to G Mechanical strength G Freedom from season cracking G Resistance to abnormal heat and fire G Resistance to rusting 51 Ed. 5.0, form 08

10 Type test according to : IEC, EN / IEC, HD TESTING OF FUSE-LINKS OF AN HOMOGENEOUS SERIES HAVING THE SMALLEST RATED CURRENT Test table 12 comprises the following tests : Sub-clause Test Page form G Dimensions 13 to G Resistance G a) Conventional non-fusing current G b) Conventional fusing current G Rated current G Time-current characteristics G Gates "gg" and " gm" fuse-links G Gates "am" fuse-links G Overload G Conventional cable overload protection G Indicating device striker G 8.5 Breaking capacity No to 29 / 36, G 8.6 Cut-off current characteristics G 8.7 I²t characteristics G 8.8 Degree of protection G 8.9 Resistance to heat G 8.10 Non-deterioration of contacts 46 to G Mechanical strength G Resistance to abnormal heat and fire G Resistance to rusting Non deterioration of insulating parts of fuse-link and fuse-base 51 Ed. 5.0, form 09

11 Type test according to : IEC, EN / IEC, HD TESTING OF FUSE-LINKS OF AN HOMOGENEOUS SERIES BETWEEN THE LARGEST AND THE SMALLEST RATED CURRENT Test table 13 comprises the following tests : Sub-clause Test Page form G Dimensions 13 to G Resistance G a) Conventional non-fusing current G Rated current G Time current characteristics No. 4a 21 / G Gates "g" fuse-links G Gates "a" fuse-links G Conventional cable overload protection 25 Ed. 5.0, form 10

12 Type test according to : IEC, EN / IEC, HD TESTING OF FUSE-HOLDERS List of tests (based on table 14 of IEC ) : Sub-clause Test Page form G Dimensions 13 to G 8.2 Insulating properties G 8.3 Temperature-rise and acceptable power dissipation G 8.5 Breaking capacity Test No Verification of the peak withstand current of a fuse-base G 8.8 Degree of protection Resistance to heat G 8.10 Non-deterioration of contacts 46 to Mechanical strength of the fuse-base G Freedom from season cracking G Resistance to abnormal heat and fire G Resistance to rusting Non-deterioration of insulating parts of fuse-link and fuse-base 51 Ed. 5.0, form 11

13 Test report No. : IEC G DIMENSIONS IEC Figure 101 Fuse-links with blade contacts, without striker (Fuse system A) Size : Dimensions Prescribed (mm) (with tolerances) a1... a2... a a4... b1... b2... b b4... c1... c2... d... e1... e2... e e4... f... r... z......mm For size ± ± /+0.5. Detail X / min. 2, / /0.. Ed. 5.0, form 12

14 Test report No. : IEC G IEC Figure 201 DIMENSIONS Fuse-links with blade contacts, with striker (Fuse system B) Size : Reference "A"/"B" Dimensions Prescribed (mm) (with tolerances) a1... a2... a a3... a4... b min.... c1 c2... d... e1... e2... e e4... f max.... r mm For size ± ± /+0.5 2,5 2,5 ± 0.5. Detail X / min.. 2, / /0.. Striker k. l. m m Ed. 5.0, form 13

15 Test report No. : IEC G DIMENSIONS IEC Figure 601 Fuse-links with cylindrical caps, without striker (Fuse system F) Size : Dimensions a b max. c d min. r Prescribed (mm) (with tolerances) IEC Figure 602 Fuse-links with cylindrical caps, with striker (Fuse system F) Size : Dimensions a b max. c d min. r Prescribed (mm) (with tolerances) Striker 3 à 6 8 s0 s1 Ed. 5.0, form 14

16 Test report No. : IEC G DIMENSIONS IEC Figure 102 Bases for fuse-links with blade contacts, without strikers (Fuse system A) Size : Dimensions marking g h Prescribed (mm) (with tolerances)..± 1..± 1.5 n1 max.. n2 max.. p1 max.. p2..± 1.5 r min.. s max.. t min.. v. w1..± 0.7 w2..± 0.7 x min.. y..± 0.5 z max.. Figure 603 a min.. b min.. c min.. d..± 0.25 e..± 0.5 Bases for fuse-links with cylindrical caps (Fuse system F) G1 max... G2 max.. H1 min... H2 min.. L...0/ Ed. 5.0, form 15

17 Test report No. : IEC G DIMENSIONS IEC Figure 202 Bases for fuse-links with blade contacts, with strikers (Fuse system B) Size : Reference "A"/"B" Dimensions marking h n1 max. n2 max. p1 max. p2 r min. s max. t min. v v w1 w2 x min. y z max. Prescribed (mm) (with tolerances)..± 1.5..± 1.5..± 0.7..± 0.7..± 0.5 Reference A j1 min.... j2 max.... j3 27 min., 30 max. j4 6.5 min., 9 max. Reference B j 1 min.... j 2 max.... j 3...min.,... max. Ed. 5.0, form 16

18 G INTERNAL RESISTANCE R Ambient air temperature 20 5 C Measuring current 0,1 In Value of resistance Type of fuse-link Sample No. Re (m at 35 C) Ri 3/2... C A m G 8.3 G Table 10 Verification of temperature rise and power dissipation Reference of the fuse-holders One fuse used for test (unless otherwise stated by the manufacturer) mounted in free air Ambient air temperature 20 5 C Cabling characteristics Length Cross section area Tightening torque... m... mm²...nm.... C m ²...Nm Ed. 5.0, form 17

19 IEC Table 111 G MEASUREMENT OF THE TEMPERATURE RISE IEC Table 5 Method of measuring Spring loaded... K...K Bolted contacts... K...K Terminals... K...K Power dissipation Test made with a.c. at the current equal the rated current of the fuse-link A IEC Points of measuring according to figure 106 / figure 301 IEC Figure 101 / Figure 601 Measured value of power dissipation...w...w The rated power acceptance... W of fuse-holder not less than the rated power dissipation of corresponding fuse-link. IEC Table 15 Verification of insulation properties Dielectric test voltage...v...v Compliance with 8.2 Acceptable deformations Ed. 5.0, form 18

20 G 8.4 VERIFICATION OF OPERATION G The test arrangement as specified in sub-clause Length of conductors (busbars) Cross section area m ² m ² G Ambient air temperature 20 5 C... C G Verification of conventional non-fusing current and fusing current Table 2 IEC , Table 101 a) The fuse-link subjected In A to the conventional non-fusing current Inf A The fuse-link did not operate within the conventional time h...a...h b) The same fuse-link subjected to the conventional fusing current If A The fuse-link operates in h...a...min G Verification of rated current of "g" fuse-link Table 2 IEC , Table 101 One fuse-link submitted to a pulse test for 100 h On-period equal to conventional time (h) h Off-period 0.1 of conventional time.....h.... Test current equal 1,05 rated current Verification of conventional non fusing operation of the fuse-link A...A G Verification of conventional non fusing (I nf) Test current Conventional time Operation of the fuse-link A h...a...h Ed. 5.0, form 19

21 G Verification of time-current characteristics and gates G G Time-current characteristics of "g" fuse-links Pre-arcing I²t values not less than stated by the manufacturer and within the limits of Table 7 for I²t at 0,01 s G, Table 7 IEC , Table 102 Values of pre-arcing and operating times within the time-current zones: - Indicated by the manufacturer or - Specified (Subsequent Part:.. ) IEC In case of homogeneous series: Supplementary tests for smaller current ratings, if only one largest rated current fuse-link is subjected to the test according to 8.5 "g" fuse-links (except gd,"gg" an "gm") Test 3a) prospective current equal 10 to 20 In power factor 0,3 to 0,5 time constant 15 to 20 ms Test voltage 1,10 Un U 1,15 Un Pre-arcing time s A....ms V s Test 4a) prospective current 5 to 8 In power factor 0,3 to 0,5 time constant 15 to 20 ms Test voltage 1,10 Un U 1,15 Un Pre-arcing time s...a...ms...v...s Test 5a) prospective current 2,5 to 4 In power factor 0,3 to 0,5 time constant 15 to 20 ms Test voltage 1,10 Un U 1,15 Un Pre-arcing time...s...a...ms...v...s Test Laboratory: TRF IEC HD Ed. 5.0, form 20

22 G Verification of time-current characteristics and gates G Time-current characteristics of "a" fuse-links Pre-arcing I²t values not less than stated by the manufacturer and within the limits of Table 7 for I²t at 0,01 s Values of pre-arcing and operating times within the time-current zones: - Indicated by the manufacturer or - Specified (Subsequent Part:.. ) IEC Figures 2 & 3 In case of homogeneous series: Supplementary tests for smaller current ratings, if only one largest rated current fuse-link is subjected to the test according to Test 3a) prospective current...a power factor 0,3 to 0,5 time constant 15 to 20 ms equal nk2 In 5 n 8 Test voltage 1,10 Un U 1,15 Un Pre-arcing time.... s Test 4a) prospective current A power factor.. 0,3 to 0,5 time constant 15 to 20 ms equal nk2 In 2 n 3 Test voltage 1,10 Un U 1,15 Un Pre-arcing time. s Test 5a) prospective current 2,5 to 4 In power factor 0,3 to 0,5 time constant 15 to 20 ms equal nk2 In 1 n 1,5 Test voltage 1,10 Un U 1,15 Un Pre-arcing time...s...a...ms n =...V...s...A...ms n =......V...s...A...ms n =......V...s Ed. 5.0, form 21

23 G Verification of gates "gg" and "gm" G, Table 3 IEC , Table 102 Test performed at voltage... V a) testing current... A pre-arcing time > 10 s...a b) testing current... A pre-arcing time 5 s...a c) testing current... A pre-arcing time > 0.1 s...a d) testing current... A pre-arcing time 0.1 s...a G Table 4 Verification of gates "am" a) testing current 4 In = A operation 60 s...a...s b) testing current 6,3 In =...A operation 60 s...a...s c) testing current 10 In =...A operation 5 s...a...s d) testing current 19 In =...A operation 0,10 s...a...s Ed. 5.0, form 22

24 Test report No : G Overload Table 2 Figure 3 The test arrangement the same as for the temperature-rise (sub-clause Part 1) Three fuse-links submitted to 50 pulses having the same duration and test current Test carried at voltage...v Pre-arcing time of sample at overload current:. "g" fuse-link Test current equal to 0,8 times the minimum current stated by the manufacturer for a pre-arcing time of 5 s A A Duration of each pulse 5 s s Interval between pulses... s equal to 0,2 times the conventional time... s After cooling down, operation at overload current A Pre-arcing time within the stated zone... 1)... 2)... 3) "a" fuse-link A s s s Rated current In of fuse-link... A Test current k 1 I n =. A 2% (k1= 4) Pulse duration corresponding to the overload curve for k 1 I n stated by manufacturer. A...s Intervals between pulses equal to 30 times the pulse duration After cooling down, operation at overload current k 1 I n =. A Pre-arcing time within the stated zone... 1)... 2)... 3) A s s s Ed. 5.0, form 23

25 G Conventional cable overload protection (for "gg" fuse-link only) Fuse-link mounted as specified (sub-cl ) Table 17 Connected PVC insulated copper conductors of cross sectional area of... mm² Table 2 Fuse-link and conductor connected to it preheated with rated current... A of fuse-link for time... h equal to the conventional time Table 19 Test current increased to 1,45 I z... A...A The fuse-link operated in time :... s...s Annexe A Required by some contries. Special test to prove that fuses and miniature circuit breakers (MCBs) are equivalent protective devices. Size Fuse... Volume of the box...m 3 3 samples tested.... m 3 Fuse- link and conductor connected to it preheated with a current equal to 1,13 In....A for time... h equal to the conventional time....a None of the fuse-links operates Y/N. Test current is then raised without interruption within 5 s To 1,45 In....A One fuse-link operates within the conventional time...s...s Ed. 5.0, form 24

26 G Operation of indicating devices and strikers Indicating devices Operation of indicating device is verified in combination with the verification of breaking capacity Page... Strikers Test on an additionnal sample Tables 20 & 21 Figure 2 Test current "g" fuse-link I4 =...A "a" fuse-link 2k1 In = A A A Recovery voltage 20 V 0/+10% (if Un 500 V) V 0.04 Un 0/+10% (if Un > 500 V) V Operation of the striker under revovery voltage not less than 20 V. Note : In case during one of these tests the indicating device or strikes failed, the manufacturer shall furnish evidence that the failure is not typical. Failure Evidence not typical. IEC , (system F) Figure 602 Before operation, s0 1 mm. Force of the striker on all points between its final limits 2.5 F (N) 20 After operation: 7 mm s1 10 mm.. Striker remains captive...n.. Ed. 5.0, form 25

27 G 8.5 Verification of breaking capacity The test arrangement as specified in sub-clause and Characteristics of the test circuit as specified Schema of test circuit Page... Deviations from specified characteristics of test circuits : G Calibration of test circuit Calibration oscillograms and their evaluation see additional sheet Page... G The breaking-capacity test made at an ambient air-temperature... C Ed. 5.0, form 26

28 G 8.5 Breaking-capacity test on a.c. fuses G Table 20 Test No 1, I 1 a.c. Rated breaking capacity of the fuse-link... ka Prospective current I 1... ka at the voltage... V "g" / "a" fuse-links "g"/"a".... Prospective current I 1 equal to rated breaking capacity... ka 0/+10%...kA Power factor.... Initiation of arcing after voltage zero : Three samples : 1) within 40 to /+10 2) within 65 to 90 3) within 65 to 90 Power-frequency recovery voltage : 1,1 Ue 0/+5%...V Samples : 1) 2) 3) V V V G Maintained duration of recovery voltage 15s s Cut-off current Samples : 1) 2) 3)...kA...kA...kA G 8.7 I²t characteristics if required Page... Ed. 5.0, form 27

29 G Acceptability of test results No. 1 G 7.5 Table 6 a) maximum arc voltage did not exceed stated values : V...V b) fuse-links operated without external effects or damage to the components of the complete fuse c) no permanent arcing, flashover or ejection of dangerous flames d) no damage of fuse components hindering from their further use e) no damage of fuse-links such, that it is difficult or dangerous to replace them f) fuse-link remains in one piece before it is removal from the fuse carrier... g) resistance between contacts of fuse-links after test not less than 50 k for rated voltage of fuse-links up to 250 V,100 k in all other cases Samples: 1) 50 /100k 2) 50 /100k 3) 50 /100k...k...k...k G Operation of indicating devices. Ed. 5.0, form 28

30 G 8.5, G , G 7.5 Table 6 G 8.7 G G 8.5.8, G 7.5 Table 6 Verification of breaking capacity Test No.2 a.c Prospective current I2 < I1... ka Test made under conditions which approximate those giving maximum arc energy Power factor Making angle after voltage zero (angle tolerance: -0 /+ 20 ) Samples: 1) 3) I²t characteristics if required Power-frequency recovery voltage : samples: 1) 2) 3) Maintained duration of recovery voltage after operation of the fuselink 2 samples: 15 s 1 sample: - not containing organic material: 30 s - containing organic material: 5 min. Acceptability of test results No.2 a) maximum arc voltage did not exceed stated values :... V b) fuse-links operated without external effects or damage to the components of the complete fuse.. c) no permanent arcing, flashover or ejection of dangerous flames.. d) no damage of fuse components hindering from their further use... e) no damage of fuse-links such, that it is difficult or dangerous to replace them f) fuse-link remains in one piece before it is removal from the fuse carrier... g) resistance between contacts of fuse-links after test not less than 50k for rated voltage of fuse-links up to 250 V, 100k in all other cases. Samples : 1) 50 /100k 2) 50 /100k 3) 50 /100k...kA Page......V...V...V...s...s...min....V......k...k...k Operation of indicating devices Ed. 5.0, form 29

31 G 8.5 Verification of breaking capacity Tests No.1 and 2 for I 2 I Prospective current I 2 =... ka...ka Test made on 6 samples. Making angles differ approximately 30 between each test Test made with current I 1 =... ka...ka G Power factor... G 8.6 Maintained duration of recovery voltage after operation of the fuselink Sample :. 15s Cut-off current ka See table results G 8.7 I²t characteristics if required Page... Sample Making angle after voltage zero RESULTS Recovery voltage Cut off current Resistance between contacts [ ] [V] / % [A] [k ] 1 / 2 / 3 / 4 / 5 / 6 / Ed. 5.0, form 30

32 Test report N : G Acceptability of tests results No.1 and 2 G 7.5 Table 6 a) maximum arc voltage did not exceed stated values... V b) fuse-links operated without external effects or damage to the components of the complete fuse.. V. c) no permanent arcing, flashover or ejection of dangerous flames.. d) no damage of fuse components hindering from their further use... e) no damage of fuse-links such, making replacement... f) fuse-link remains in one piece before removal from the fuse carrier g) resistance between contacts of fuse-links after test not less than 50 k for rated voltage of fuse-links up to 250 V, 100 k in all other cases Samples: 1) /100k 2) /100k 3) /100k 4) /100k 5) /100k 6) /100k...k...k...k...k...k...k G Operation of indicating devices Ed. 5.0, form 31

33 G 8.5 Verification of breaking capacity G Test No. 3 a.c "g" fuse-link Prospective current I3 3,2 I f =...A 20%...A "a" fuse-link Prospective current I3 2,5 k 2 I n =...A 20% A Power factor 0,5. G Maintained duration of recovery voltage after operation of the fuselink 15 s... s G Acceptability of test results No. 3 a) fuse-links operated without external effects or damage to the components of the complete fuse. b) no permanent arcing, flashover or ejection of dangerous flames. c) no damage of fuse components hindering from their further use. d) no damage of fuse-links such, making replacement difficult or dangerous. e) fuse-link remains in one piece before removal from the fuse carrier. f) resistance between contacts of fuse-links after test not less than 50 k for rates voltage of fuse-links up to 250 V, 100 k in all other cases measured resistance 50/100k...k G Operation of indicating devices. Ed. 5.0, form 32

34 G 8.5 Verification of breaking capacity G Test No. 4 a.c Tolerance on test current: -0/+20% "g" fuse-link Prospective current I 4 2,0 I f =...A...A "a" fuse-link Prospective current I 4 1,6 k2 In =...A...A Power factor 0,3-0,5 G Maintained duration of recovery voltage after operation of the fuselink For 2 samples: 15 s 1 sample: - not containing organic material: 30 s - containing organic material: 5 min....s...s...min. G Acceptability of test results No. 4 a) fuse-links operated without external effects or damage to the components of the complete fuse b) no permanent arcing, flashover or ejection of dangerous flames c) no damage of fuse components hindering from their further use d) no damage of fuse-links such, making replacement difficult or dangerous e) fuse-link remains in one piece before removal from the fuse carrier f) resistance between contacts of fuse-links after test not less than 50 k for rated voltage of fuse-links up to 250 V, 100 k in all other cases measured resistance 50/100k...k G Operation of indicating devices. Ed. 5.0, form 33

35 G 8.5 Verification of breaking capacity G Test No. 5 a.c Tolerance on test current: -0/+10% "g" fuse-link Prospective current I 5 1,25 If =...A...A "a" fuse-link Prospective current I 5 k2 In =...A...A G Power factor 0.3-0,5 G Maintained duration of recovery voltage after operation of the fuselink 15 s......s Acceptability of test results No. 5 a) fuse-links operated without external effects or damage to the components of the complete fuse b) no permanent arcing, flashover or ejection of dangerous flames c) no damage of fuse components hindering from their further use d) no damage of fuse-links such, making replacement difficult or dangerous e) fuse-link remains in one piece before removal from the fuse carrier f) resistance between contacts of fuse-links after test not less than 50 k for rated voltage of fuse-links up to 250 V, 100 k in all other cases measured resistance 50/100k...k G Operation of indicating devices Ed. 5.0, form 34

36 G 8.5 Breaking-capacity test on d.c. fuses G Table 21 Test No 1, I 1 Rated breaking capacity of the fuse-links I1... ka at the voltage... V "g" / "a" fuse-links "g" / "a":... Prospective current I 1 equal to rated breaking capacity:. ka (0/+10%)...kA Time constant 15 to 20 ms...ms Initiation of arcing at current:...a...a...a The values are equal or greater than 0.5 I1.. Recovery voltage:. 1,15 Ue (-9%/+5%): Samples : 1) 2) 3) V V V G Maintained duration of recovery voltage 15s s Cut-off current: Samples : 1) 2) 3)...kA...kA...kA G 8.7 I²t characteristics if required Page... Ed. 5.0, form 35

37 G Acceptability of test results No. 1 Table 6 a) maximum arc voltage did not exceed stated values :... V...V b) fuse-links operated without external effects or damage to the components of the complete fuse c) no permanent arcing, flashover or ejection of dangerous flames d) no damage of fuse components hindering from their further use e) no damage of fuse-links such, that it is difficult or dangerous to replace them f) fuse-link remains in one piece before it is removal from the fuse carrier g) resistance between contacts of fuse-links after test not less than 50 k for rated voltage of fuse-links up to 250 V, 100 k in all other cases Samples 1) /100 k 2) /100 k 3) /100 k...k...k...k G Operation of indicating devices. Ed. 5.0, form 36

38 G Table 21 Test No 2, I 2 (if peak value test n 1 0,5 I 1) Prospective current I2..kA Test made under conditions which approximate those giving maximum arc energy at the voltage... V "g" / "a" fuse-links "g" / "a".... Time constant 15 to 20 ms...ms Initiation of arcing at current:...ka...ka...ka Recovery voltage:... 1,15 Ue (-9%/+5%): V V V G Maintained duration of recovery voltage 2 samples: 15 s 1 sample: - not containing organic material: 30 s - containing organic material: 5 min....s...s...min. Cut-off current...ka...ka...ka G 8.7 I²t characteristics if required Page... Ed. 5.0, form 37

39 G Acceptability of test results No. 2 a) maximum arc voltage did not exceed stated values :... V...V b) fuse-links operated without external effects or damage to the components of the complete fuse c) no permanent arcing, flashover or ejection of dangerous flames d) no damage of fuse components hindering from their further use e) no damage of fuse-links such, that it is difficult or dangerous to replace them f) fuse-link remains in one piece before it is removal from the fuse carrier g) resistance between contacts of fuse-links after test not less than 50 k for rated voltage of fuse-links up to 250 V, 100 k in all other cases Samples 1) /100 k 2) /100 k 3) /100 k...k...k...k G Operation of indicating devices Ed. 5.0, form 38

40 G Test No. 3, I 3 Prospective current 3,2 If (±20%)......A Time constant 15 to 20 ms...ms G Maintained duration of recovery voltage 15s...s Cut-off current...ka...ka...ka G 8.7 I²t characteristics if required Page... G Acceptability test results Table 6 a) maximum arc voltage did not exceed stated... V values b) fuse-links operated without external effects or damage to the components of the complete fuse c) no permanent arcing, flashover or ejection of dangerous flames d) no damage of fuse components hindering from their further use e) no damage of fuse-links such, that it is difficult or dangerous to replace them f) fuse-link remains in one piece before it is removal from the fuse carrier g) resistance between contacts of fuse-links after test not less than 50 k for rated voltage of fuse-links up to 250 V, 100 k in all other cases...v measured resistance 50/100k...k G Operation of indicating devices.. Ed. 5.0, form 39

41 G Test No. 4, I 4 Conventional fusing current... A Prospective current 2,0 If (0/+20%)......A Time constant 15 to 20 ms...ms G Maintained duration of recovery voltage 2 samples: 15 s 1 sample: - not containing organic material: 30 s - containing organic material: 5 min. Cut-off current:...s...s...min....ka...ka...ka G 8.7 I²t characteristics if required Page... G Table 6 Acceptability test results a) maximum arc voltage did not exceed stated... V values b) fuse-links operated without external effects or damage to the components of the complete fuse c) no permanent arcing, flashover or ejection of dangerous flames d) no damage of fuse components hindering from their further use e) no damage of fuse-links such, that it is difficult or dangerous to replace them f) fuse-link remains in one piece before it is removal from the fuse carrier g) resistance between contacts of fuse-links after test not less than 50 k for rated voltage of fuse-links up to 250 V, 100 k in all other cases measured resistance 50/100k...V k G Operation of indicating devices.. Ed. 5.0, form 40

42 Test report No. : G Test No. 5 I 5 Conventional fusing current A Prospective current 1, 25 If (0/+20%)......A Time constant 15 to 20 ms...ms G Maintained duration of recovery voltage 15s s Cut-off current:...ka...ka...ka G 8.7 I²t characteristics if required Page... G Acceptability test results Table 6 a) maximum arc voltage did not exceed stated... V values b) fuse-links operated without external effects or damage to the components of the complete fuse.. c) no permanent arcing, flashover or ejection of dangerous flames.. d) no damage of fuse components hindering from their further use... e) no damage of fuse-links such, that it is difficult or dangerous to replace them f) fuse-link remains in one piece before it is removal from the fuse carrier... g) resistance between contacts of fuse-links after test not less than 50 k for rated voltage of fuse-links up to 250 V, 100 k in all other cases...v measured resistance... 50/100k...k G Operation of indicating devices..... Ed. 5.0, form 41

43 Test report N : G 8.6 Verification of the cut-off current characteristics G G The values measured did not exceed cut-off characteristics indicated by the manufacturer. G 8.7 Verification of I ² t characteristics and overcurrent discrimination G Table 7 IEC Table 106 The operating I²t values measured did not exceed the values indicated by the manufacturer or those specified in subsequent parts The pre-arcing I²t values not less than minimum pre-arcing values given by the manufacturer.. Verification of compliance for "gg" and "gm" fuse-links at 0,01s G Table 7 IEC Table 106 "gg" / "gm" fuse-links at 0,01s comply with Table 106 Or determination as specified. Verification of over-current discrimination & Table 20 Table 615 Discrimination is verified by means of time-current characteristics and operating I²t values. Arrangement of the samples as for the breaking capacity test. Rated current of the fuse-links:. A Prospective current for minimum pre-arcing I²t as stated in Table 113 (samples No. 1 and 2):. A (r.m.s.) Minimum pre-arcing I²t for sample No.1: stated:.. A²s Minimum pre-arcing I²t for sample No.2: stated:.. A²s measured: measured: A²s A²s Test voltage (1.05xUn/ 3 for 690 V fuses or 1.1xUn/ 3 for all other fuses: V Ed. 5.0, form 42

44 Prospective current for maximum pre-arcing I²t as stated in Table 113 (samples No. 3 and 4):. A (r.m.s.) Maximum pre-arcing I²t for sample No.3: stated:.. A²s measured: A²s Maximum pre-arcing I²t for sample No.4: stated:.. A²s measured: A²s Test voltage (1.05xUn/ 3 for 690 V fuses or 1.1xUn/ 3 for all other fuses: The values of I²t lie within the corresponding limits specified in Table 113 V G 8.8 IEC Verification of the degree of protection of enclosures Verification by test under conditions specified in IEC Degree of protection IP... IP... G 8.9 G 8.3, G 8.4, G 8,5 G 8.10 Verification of resistance to heat No damage impaired by heat during the previous operating tests. Ed. 5.0, form 43

45 IEC , , Table 118 Figure 108 Fuse-base for fuse-link with blade contacts (Fuse system A) Test arrangement and test method according to standard. G Figure 102 Acceptability of test results: a- fuse-base not broken b- fuse-base without signs of cracks c- dimensions in conformity... IEC , , Table 118 Figure 108 Fuse-links with gripping lugs of moulded material or of metal fixed in moulded material Test arrangement and test method according to standard. G Figure 101 Acceptability of test results: a- gripping lugs operational b- dimensions specified not exceeding the limit.. Ed. 5.0, form 44

46 Samples 1) 2) 3) 4) 5) 6) 1) 2) 3) 4) 5) 6) 1) 2) 3) 4) 5) 6) 1) 2) 3) 4) 5) 6) G Figure 106 Cycle N 50 Fuse system A Verification of non deterioration of contacts and direct terminal clamps Contacts Ambiant temp. [ C] RT [m ] R20 [m ] Resistance change 250 R250-R50 R R500-R250 R R750-R50 R50 Permissible change of the resistance 15 % 30 % 40 % Difference of temperature-rise between last and 1 st measurement: < 2 % % %.. Table 118 Withdrawal forces... N < F <...N after 250 cycles mini: maxi: after 750 cycles mini: maxi:.n.n.n.n Table 112 If measured F values too low then breaking test N 1 is performed Page... Ed. 5.0, form 45

47 Samples 1) 2) 3) 4) 5) 6) 7) 8) 9) 10) 1) 2) 3) 4) 5) 6) 7) 8) 9) 10) G G Figure 101 Tables 10, 114, Table 2 Figure 110 Table 116 Table 117 Fuse system A Verification of non deterioration of contacts and direct terminal clamps Direct terminal clamps Conductor material Tightening torque Cu / Al Test current Inf =...A Duration of load period (25 % of conventional time)...s Duration of no-load period (10 % of conventional time)...s Direct current value for voltage drop measurement: Im (0/+1%). Permissible tolerance for resistance Rcl 0 for cleaned Al conductors: Rcl max 2 Rcl 0 min Measurement of change of the resistance Ambient Permissible change of RT R20 Resistance Cycle temp. the resistance [m ] [m ] change N [ C] Cleaned Uncleaned Nm...A...s...s...A Conformity Ed. 5.0, form 46

48 Samples 1) 2) 3) 4) 5) 6) 7) 8) 9) 10) 1) 2) 3) 4) 5) 6) 7) 8) 9) 10) 1) 2) 3) 4) 5) 6) 7) 8) 9) 10) Measurement of change of the resistance Ambient Permissible change of RT R20 Resistance Cycle temp. the resistance [m ] [m ] change N [ C] Cleaned Uncleaned 250 Rcl 250-Rcl 50 Rcl Rcl 500-Rcl 250 Rcl Rcl 750-Rcl 500 Rcl 500 Permissible change of the resistance: (Rcl 750-Rcl 50) / Rcl 50 1) 2) 3) 15% 4) 5) 6) 1) 2) 3) 20% 4) 5) 6) 1) 2) 3) 15% 4) 5) 6) 40% 1), 2), 3), 4) 5), 6) Temperature-rise at point F 75 K 7) 8) 30% 9) 10) 7) 8) 40% 9) 10) 7) 8) 30% 9) 10) 80% 7), 8), 9),10) Conformity Ed. 5.0, form 47

49 G.8.10 Fuse system F Verification of non deterioration of contacts and direct terminal clamps Dummy fuse with dimensions according to Figure 601 and with rated power dissipation acc. to Table 604 Y/N Y/N Test current Inf =...A Duration of load period (25 % of conventional time) Duration of no-load period (10 % of conventional time)...s...s...s...s Difference of temperature-rise: After 250 cycles: 15K After 750 cycles: 20K Y/N (value). Y/N (value)....(.)...(.) G Mechanical strength Mechanical characteristics of fuse-links, fuse-base, fuse-carrier respond to their normal handling and mounting.. G Mechanical strength of the fuse-base Figure 108 Table 118 Withdrawal forces according to Table 118 F mini...n F maxi...n Measured value of F Steel screws 3 times fastened at tightening torques: 1,2 x relevant value in Table F...Nm Or specified by manufacturer...nm N N N...Nm...Nm : Further use not affected Fuse-base not broken No any sign of craks... Ed. 5.0, form 48

50 G Figure 109 Impact resistance of gripping lugs of moulded material or of metal fixed in moulded material Test results : a) no damage hindering their further use b) gripping-lugs bent out not exceeding 3 mm c) coupling with handle of Figuree 3(I) not hindered G Miscellaneous tests G Verification of freedom from season cracking Current-currying parts made of rolled copper alloy with less then 83% copper content.. After the test no damage in sense of this sub-clause.. G Verification of resistance to abnormal heat and fire Parts of insulating material, except ceramic, have a limited duration of burning without spreading fire by flames of burning droplets of glowing particles falling from the specimen Glow-wire test C Parts of insulating material not necessary to retain current-carrying parts in position eventhough they are in contact with them satisfy the glowwire 650 C 10 C... C Glow-wire test C Parts of insulating material necessary to retain current-carrying parts in position eventhough they are in contact with them satisfy the glow-wire test 960 C 10 C... C No visible flame G or burning or glowing of the specimen Extinguishing after removal of the glow-wire within No burning of the tissue paper No scorching of the pinewood board 30s 1s...s Ed. 5.0, form 49

51 G Verification of resistance to rusting Test according to ISO 6988 with cycling moist atmosphere containing 0.2% SO2 (SFW 0.2 S) Surface of tested parts shows no signs of rust Non deterioration of insulating part of fuse-link and fuse-base 3 samples exposed to : 168h, C 168h, C 1h, C Then, after cooling to ambient temperature, G.8.5 Fuse-links: Test n 1 Test n 2 I1 I2 Page... Page... G Fuse-base: Mechanical strength Acceptability of the results a- no change of the fuse-base contact affecting correct functioning b- tests No.1 No.2 are satisfactory c- marking easily legible Ed. 5.0, form 50

52 G 8.2 Verification of insulating properties G The fuse-holder fitted with fuse-link(s) of the largest dimensions for the type of fuse-holder The fuse-base fixed to a metal plate, unless otherwise specified G Table 9 The r.m.s. value of test voltage V...V G The test voltage applied between : a) Live parts and the frame with the fuse-link and the device for replacing it or the fuse-carrier, if any, in position No breakdown of insulation or flashover during 1 min of applying test voltage b) The terminals without fuse-link, device for replacing or the fuse-carrier No breakdown of insulation or flashover during 1 min of applying test voltage c) Live parts of different polarity in the case of multiple fuse-holder with fuse-link(s), fuse-carrier(s) of device(s) for replacing the fuse-links No breakdown of insulation or flashover during 1 min of applying test voltage d) Live parts which in the case of multiple holder reach different potential after the fuse-link operates (equipped by fuse-carrier of device for replacing without fuse-link) e) Isolated metal gripping-lugs and the terminals of the test fuse-base No breakdown of insulation of flashover during 1 min. of applying test voltage Ed. 5.0, form 51

53 G Temperature-rise and power acceptance of the fuse-holder Table 5 Measured on sample as stated Applied current for test equal to the rated current of the fuse-holder... A...A Table 613 Tightening torque Nm...Nm Test made with fuse-link... A or with dummy fuse-link specified in subsequent part of IEC A Maxi temperature-rise of contact of : - Spring loaded K - Bolted contacts K - Terminals K K K K Verification of the peak withstand current of the fuse-base Size fuse... Value of cut-off current... ka peak...ka Acceptability of test results Fuse-link : not ejected... No sign of arcing... No sign of welding... Other damage... Ed. 5.0, form 52

54 Type test according to : IEC, EN / IEC, HD Additional page Test report No. : Type : Ed. 5.0, form 53