BS 88 industrial fuses - gg and gm curves

Transcription

1 BS 88 gg and gm Industrial fuses A, B and C types - gg curve Applications Power cable protection Distribution panel protection Control Panel Main circuit Distribution panel Lighting, heating and electrical equipments Capacitor, Circuit breakers, batteries DC circuit protection. The fuse complies with standard EN section II and standard BS 88 part 2. These fuses are designed for : - General purpose use protection (gg type) - motor protection (gm type) This fuse range insures an excellent current limitation for all overloads on a large range of applications. Their size cannot allow exchange by other fuses of higher rating in their range. They are screwed into fuseholders or bolted directly onto busbars, or in fuse interruptors disconnectors. Features Approval Fast gg curve Asta 20 Certified Very current limiting Tested in DC Voltage 45VAC and 250VDC High breaking capacity : 45VAC and 250VDC tested A type : bracket connection, B type : blade with single central fixing hole connection C type : blade with two central fixing hole connection. Ratings A type A : from 2A to 32A A2 : from 2A to 32A A3 : from 40A to 0A A4 : from 32A to 0A Overrating till 200A B type B : from 32A to 0A B2 : from 25A to 200A B3 : from 250A to 35A B4 : from 355A to 400A C type C : from 355A to 400A C2 : from 450A to 630A C3 : from 670A to 800A A and B types - gm curve Applications Motor protection Inductive load protections Transient overloads Electrical equipment using motors protection Capacitor Features Fast curve gm Very current limiting Voltage 45VAC High breaking capacity : 45VAC tested A type : bracket connection, B type : blade with single central fixing hole connection Approval Asta 20 Certified Ratings A type A : 20A A2 : 30A A3 : 63A A4 : 0A and 200A B type B : 0A B2 : 200A B3 : 35A 43

2 Standard fuse ampere rating A, B and C types - gg curve A type A 2 N A A 4 P A A 6 Q A A R A A 6 S A A 20 T A A 25 V A A 32 W A A2 2 Z A2 A2 4 A A2 A2 6 B A2 A2 C A2 A2 6 D A2 A2 20 V A2 A2 25 E A2 A2 32 F A2 A3 40 L A3 A3 50 M A3 A3 63 N A3 A3 80 P A3 A3 0 Q A3 A4 32 T A4 5 A4 40 V A4 5 A4 50 W A4 5 A4 63 X A4 5 A4 80 Y A4 5 A4 0 Z A4 5 A4X* 25 D A4X 5 A4X* 60 E A4X 5 A4X* 200 F A4X 5 B type BX* 32 J BX BX* 40 K BX BX* 50 L BX BX* 63 M BX B 80 N B 5 B 0 P2263 0B 5 B2 25 T B2 5 B2 60 V B2 5 B2 200 W B2 5 B3 250 Z B3 B3 35 A B3 B3X* 250 C B3X B3X* 35 D B3X B4 355 E B4 B4 400 F B4 C type C 355 G C C 400 H C C2 450 J C2 C2 500 K C2 C2 560 L C2 C2 630 M C2 C3 670 N C3 C3 7 P C3 C3 750 Q C3 C3 800 R C3 A and B types - gm curve A type A 20M25 X M25A A 20M32 Y M32A A2 32M40 G M40A2 A2 32M50 H M50A2 A2 32M63 K M63A2 A3 63M80 R M80A3 A3 63M0 S M0A3 A4 0M25 A M25A4 5 A4 0M60 B M60A4 5 A4 0M200 C M200A4 5 A4X 200M250 G M250A4X A4X 200M35 H M35A4X B type B 0M25 Q2263 0M25B 5 B 0M60 R M60B 5 B 0M200 S M200B 5 B2 200M250 X M250B2 B2 200M35 Y M35B2 B3 35M400 B M400B3 44

3 Dimensions A type Ref. BS 88 A A2 2, 4, 6,, 6, 20, 25*, 32*, 20M25, 20M32 2, 4, 6,, 6, 20, 25, 32, 32M40, 32M50, 32M63 A3 40, 50, 63 A3 80*, 0*, 63M80, 63M0 A4 32, 40, 50, 63 A4 80, 0 A4X 25, 60, 200, 0M25, 0M60, 0M200 A4X 200M250*, 200M35* B type Ref. BS 88 BX 32, 40, 50, 63 B 80, 0 B 0M25, 0M60, 0M200 B2 25, 60, 200 B2 B3 250, 35 B3 200M250, 200M35 35M400 B3X 250, 35 B4 355, 400 Current ratings (A) Current ratings (A) Dimensions (mm & In) A max B max D max E max F nom G nom H nom J nom K max mm 33 2,7 56 9,5 0,8 44,25 4,8 couteau In -/4 /2 2-3/6 3/8 /32-3/4 3/6 ouvert 4,3 9/6 mm ,2 73 5, In -5/6 7/8 3-3/8 /32 3/64 2-7/8 7/32 5/6 5/6 mm ,2 73 5,5 couteau In -5/6 7/8 3-/2 /2 3/64 2-7/8 7/32 ouvert 24 5/6 mm In 49-5/6 26 -/ /2 3 /2,2 3/ /8 5,5 7/32 couteau ouvert 28-3/32 mm ,4 94 8,7 25,4 In 2 7/8 4-5/6 3/4 3/32 3-/6 /32 7/6 mm ,4 94 8,7 29 In 2 -/32 4-5/6 3/4 3/32 3-/6 /32 7/6 -/8 mm ,4 94 8,7 38 In 2-3/8 4-5/6 3/4 3/32 3-/6 /32 7/6 -/2 mm ,4 94 8,7 45 In 2-5/8 4-5/6 3/4 3/32 3-/6 /32 7/6-3/4 Dimensions (mm & In) A max B max D max E max F nom G nom H nom I nom mm ,4 8,7 4 in -3/4 7/8 5-3/8 9/6 3/64 4-3/8 /32 9/6 mm ,2 8,7 4 in -3/4 /32 5-3/8 3/4 /8 4-3/8 /32 9/6 mm ,2 8,7 4 in -3/4-3/8 5-3/8 3/4 /8 4-3/8 /32 9/6 mm ,2 8,7 4 in -3/4-3/8 5-3/8 3/4 /8 4-3/8 /32 9/6 mm ,2 8,7 4 in -3/4-5/8 5-3/8 -/32 /8 4-3/8 /32 9/6 mm ,2 8,7 4 in -3/4-5/8 5-3/8 -/32 /8 4-3/8 /32 9/6 mm ,4 8,7 4 in -3/ /8 -/32 /4 4-3/8 /32 9/6 mm ,2 33,3 4 in -3/4-5/8 6-/4 -/32 /8 5-/4 3/32 9/6 mm ,4 8,7 6 in 2-/ /8 -/32 /4 4-3/8 /32 5/8 C type Ref. BS 88 C 355*, 400 C2 450*, 500, 560*, 630 C3 670*, 7, 750*, 800 Current ratings (A) Dimensions (mm & In) A max B max D max E max F nom G nom H nom J nom L nom mm ,3 33,3 6 25,4 In 2-/6 2 8-/4 -/32 /4 5-/4 3/32 5/8 mm ,8 33,3 6 25,4 In 2-/8 2-3/8 8-/4 -/32 5/6 5-/4 3/32 5/8 mm ,5 33,3 6 25,4 In 2-/6 2 8-/4 -/32 3/8 5-/4 3/32 5/8 45

4 gg and gm fuse-link selection Fuse-link selection for 3 phase 45 V AC induction motor circuit Motor rating Direct-on-line start (7 x FLC for sec) Fuse-link rating (amperes) Assisted start (3,5 x FLC for 20 sec) Fuse-link rating (amperes) kw HP In gg gm gg gm 0, ,,5 2,5-6 -,5 2 3, , , M25 6-5,5 7, M , M M25 3, M M M M M40 8, M M M M M M M M M M M M M M M M M * 35M400* M400* M M400* * 400M500* M500* 355* 35M400* M500* 355* 35M400* * * M500* * * - 560* Maximum full load current starting capability Direct-on-line start (7 x FLC for sec) Fuse-link rating (amperes) Maximum motor gg gm In 2-0,6 4 -,3 6-2,3-4, 6-6,0 20-7, M M M M M M M M M M M * 35M400* M400* * 400M500* M500* 3 560* * * * Assisted start (3,5 x FLC for 20 sec) Fuse-link rating (amperes) Maximum motor gg gm In 2 -,3 4-2,4 6-4,3-6, M M * * 400M500* * * * * gm This data is based upon normal starting conditions and usual efficiency and power factor. Conditions such as long run-up times, large numbers of start in succession, high ambient temperature or abnormal transients during start/delta switching may necessitate adjustments to fuse-link selection. 46

5 hours 000 gg Pre-arcing time (sec) 00 Fuse-link rating (A) 0 0, 0, Prospective current (R.M.S. symmetrical A) heures 000 gm 00 Fuse-link rating (A) Temps de préarc (A) Pre-arcing time (s) Time/current data 0 0, 0, Courant présumé symétrique en A) A) Prospective current(r.m.s. (R.M.S. symmetrical Curves from BS88 standard part and 2 (sections 2. and 2.2) of 988. Voltage rating : 45 V. Interrupting rating : 80 ka under 45 V

6 I 2 t (A 2 S) I 2 t characteristics Fuse-link rating (amperes) * Current ratings additional to BS88 Dissipated power 70 Operating I 2 t at 45 V. Pre-arcing I 2 t 60 Power (Watts) BS 88 part 2 (Section 2.2) standardized limit 20 0 * Current ratings additional to BS88 Fuse-link rating (Amperes) 48

7 Peak let-through current Nominal current derating by temperature Fuse-link rating (A) Maximum value of current (ka peak) Current carrying capability (in amperes) at elevated temperatures 40 C 45 C 50 C 55 C 60 C 65 C 70 C 75 C 80 C 2, 4, 6, FUSE-LINKS FULLY RATED * * * * * * Prospective current (ka R.M.S. symmetrical) * Current ratings additional to BS88 Curves and derating comply with BS88 standard part and 2 sections 2. and 2.2 of 988. * Derating also applies, to additional current ratings. - When the fuse-link is mounted in the open, the elevated temperature is the ambient air temperature (Ta). - When the fuse-link is mounted in an enclosure, the elevated temperature is the internal fluid environment temperature (Te) within the enclosure. When it is not known, it should be assumed to be 5 C higher than the ambient air temperature external to the enclosure, i.e. Te = Ta + 5 C. Examples : - 0 fuse-link mounted in the open at an ambient air temperature of 65 C. Current carrying capability = 0A A fuse-link mounted in the open at an ambient air temperature of 60 C. Current carrying capability = 95A A fuse-link mounted in an enclosure having an internal temperature of 65 C. Current carrying capability = 370A A fuse-link mounted in an enclosure with an unknown internal temperature and an external ambient air temperature of 40 C. Assume the internal temperature is 55 C (40 C + 5 C). Current carrying temperature = 740A. 49

8 Industrial fuses BS 88 gg and gm - F and F2 types Applications Power cable protection Distribution panel protection Control panel Main circuit Lighting, heating and electrical equipments Capacitor, batteries Can be used with circuit breakers. Ratings F type from 2A to 32A The fuse comply with standard EN section II and standard BS88 part 2. This fuses are designed for : - general purpose use protection, (gg type) - motor protection (gm type) This fuse range insures an excellent current limitation for all overloads on a large range of applications. Their size cannot allow exchange by other fuses of higher rating in the F type range. They are compact and can be connected with clips. Features Compact design Curve gg and gm Very current limiting Tested in DC Voltage 45VAC High breaking capacity : 45VAC Connection by clips or appropriate fuse holders. Approval Asta 20 Certified F2 type from A to 63A Fuses designations and ratings F type F 2 S F F 4 T F F 6 V F F W F F 6 X F F 20 Y F F 25 Z F F 32 A F F* 20M25 B M25F F* 20M32 C M32F F2 type F2 D F2 F2 6 E F2 F2 20 F F2 F2 25 G F2 F2 32 H F2 F2 40 J F2 F2 50 K F2 F2 63 L F2 * Selection table for gm fuses : refer to A, B and C types 50

9 Dimensions Ref. BS 88 Time/current data hours 000 Voltage (Vac) F 45V 2, 4, 6,, 6, 20, 25, 32, 20M25*, 20M32* F2 45V, 6, 20, 25, 32, 40, 50, 63 Current ratings (A) * Current ratings additional to BS88 also comply to the BS 88 standard part 6 of 988. Dimensions (mm) A max B max D max E max F nom N nom mm 35,5 4,3 62,5 0,8 3,5 in -2/5 9/6 2-7/6 9/20 /32 /8 mm 39 7,5 69 5,4 3,5 In -7/3 /6 2-3/8 9/6 /8 /8 00 Pre-arcing time (sec.) 0 Fuse-link ampere rating 0, 0,0 0, Prospective current (RMS symmetrical A) Ip 5

10 I 2 t (A 2 S) I 2 t characteristics Operating I 2 t at 45 V. pre-arcing I 2 t 4 6 Fuse-link rating (Amperes) Curves from BS88 standard part 6 of 988. Voltage rating : 45 VAC. Interrupting rating : 40 ka under 45 VAC * Current ratings additional to BS88 also comply to the BS 88 standard part 6 of 988. Peak let-through current & 20M32$ 25 & 20M25* Power (Watts) Curves from BS88 standard part 6 of 988. Voltage rating : 45 VAC. Interrupting rating : 40 ka under 45 VAC. ASTA 20 certified Dissipated power * Current ratings additional to BS88 also comply to the BS 88 standard part 6 of 988. BS 88-part 6 standardized limit 0 Fuse-link rating (Amperes) Maximum value of current (ka) Curves from BS88 standard part 6 of 988. Voltage rating : 45 VAC. Interrupting rating : 40 ka under 45 VAC. * Current ratings additional to BS88 also comply to the BS 88 standard part 6 of 988. Prospective current (ka R.M.S. symmetrical) 52