2-26-03 sb03044 e-rated medium voltage fuses mv155 for transformer and feeder protection 15.5 kv form no. mv155 page 1 of 5 data sheet: 6701 bussmann catalog symbol: mv155 e-rated medium voltage fuses: meets e requirements per ansi c37.46 meets full range requirements per ansi c37.40 for transformer and feeder protection voltage rating: 15.5 kv interrupting rating: 50 ka maximum sym. current limiting construction: silver ribbon element surrounded by silica filler housed in a fiberglass tube and plated endcaps. an epoxy paint protects the fuse tube from the surround- ing environment. features: standard clip center lengths and barrel diameters. the new line of bussmann 15.5 kv medium voltage fuses have standard clip center distances of 15 or 18 inches and barrel diameters of 2 or 3 inches which allow fuses to retrofit exisiting hardware. blown fuse indication with indicator. 100% tested for reliability. all medium voltage fuses are pulsed twice with 90% of their minimum melt i 2 t to guarantee undamaged elements. this test does not affect undamaged elements. a damaged element completely opens when subjected to 90% of the minimum melt i 2 t, allowing it to be detected by a resistance check. full range fuses. bussmann medium voltage fuses provide full range protection and are capable of interrupt- ing fault currents of 50,000a sym. time current curves and dimensional data: mv155f1cb series, see page 2; mv155f1db and mv155f1dc series, see page 3. peak arc voltage curves and peak let-through data, see page 4. fuse clips, see page 4. part number construction medium voltage voltage rating number of barrels barrel diameter clip center distance indication type ampere rating example mv 155 f 1 c b x 5e 055 = 5.5 kv f = full range 1 c = 2 inches a = 12 inches x = indicator only 155 = 15.5 kv 2 d = 3 inches b = 15 inches s = striker pin c = 18 inches electrical characteristics ampere min/ max. physical size (inches) part numbers ? rating melt i 2 t clear i 2 t length dia. clip center barrels mv155f1cbx5e 5a 180 2900 mv155f1cbx7e 7a 850 8000 mv155f1cbx10e 10a 850 8000 mv155f1cbx15e 15a 2070 12000 18.75 2 15 1 mv155f1cbx20e 20a 2370 23000 mv155f1cbx25e 25a 4650 31000 mv155f1cbx30e 30a 9490 45000 mv155f1dbx10e 10a 850 8000 mv155f1dbx15e 15a 2070 12000 mv155f1dbx20e 20a 2370 23000 mv155f1dbx25e 25a 4650 31000 mv155f1dbx30e 30a 9490 45000 mv155f1dbx40e 40a 9490 45000 18.75 3 15 1 mv155f1dbx50e 50a 13600 90000 mv155f1dbx65e 65a 30700 181000 mv155f1dbx80e 80a 54600 270000 mv155f1dbx100e 100a 116200 600000 mv155f2dbx125e 125a 123000 677000 mv155f2dbx150e 150a 218700 1287000 18.75 3 15 2 mv155f2dbx175e 175a 314700 1689000 mv155f2dbx200e 200a 465100 2405000 mv155f1dcx65e 65a 30700 181000 mv155f1dcx80e 80a 54600 270000 21.75 3 18 1 mv155f1dcx100e 100a 116200 600000 mv155f2dcx125e 125a 123000 677000 mv155f2dcx150e 150a 218700 1287000 mv155f2dcx175e 175a 314700 1689000 21.75 3 18 2 mv155f2dcx200e 200a 465100 2405000 ? to order with the optional striker pin, see part number construction chart below.
e-rated medium voltage fuses mv155 for transformer and feeder protection 15.5 kv - mv155f1cb series form no. mv155 page 2 of 5 data sheet: 6701 bussmann time in seconds 100 10 1 .1 .01 30a 25a 20a 15a 10a 7a 5a ampere rating 1,000 7,000 100 10 current in amperes time in seconds ampere rating 1,000 7,000 100 10 current in amperes 30a 25a 20a 15a 10a 7a 5a 100 10 1 .1 .01 time-current characteristics minimum melt time-current characteristics total clearing mv155f1cbx .63" 2.095" 17.77" 15.00" 2.03" 18.61" .21" position of blown indicator after operating. clip center bussmann indicator 2-26-03 sb03044
mv155f1dcx .63" 2.96" 2.40" 3.38" 20.77" 18.00" 21.61" .21" 1.30" position of blown indicator after operating. clip center bussmann indicator e-rated medium voltage fuses mv155 for transformer and feeder protection 15.5 kv - mv155f1db & mv155f1dc series form no. mv155 page 3 of 5 data sheet: 6701 bussmann time in seconds current in amperes .1 10 100 1000 .01 1 10000 1000 10 100 20000 10a 15a 20a 25a 30a 40a 50a 65a 80a 100a 125a 150a 175a 200a single barrel fuse assy. double barrel fuse assy. .1 10 100 1000 .01 1 100 10 1000 10000 20000 time in seconds current in amperes 10a 15a 20a 25a 30a 40a 50a 65a 80a 100a 125a 150a 175a 200a double barrel fuse assy. single barrel fuse assy. time-current characteristics minimum melt time-current characteristics total clearing mv155f1dbx double barrel dimensions 17.77" 15.00" .63" 2.96" 2.40" 3.38" 1.30" 18.61" .21" position of blown indicator after operating. clip center bussmann indicator 3.50" 6.68" 2-26-03 sb03044
e-rated medium voltage fuses mv155 for transformer and feeder protection 15.5 kv - peak arc voltage & peak let-through data bussmann 1 available current in kiloamperes (rms symmetrical) maximum let-through (peak kiloamperes) 100 10 .1 .1 1 10 100 15a 20a 25a 30&40a 50a 65a 80a 100a 07&10a 05a 125a 150a 175a 200a a b maximum peak arc voltage (kv) 50 40 circuit voltage (kv) 30 20 10 0 0 5 10 15 20 maximum peak arc voltage for "e" rated full range power fuse (bussmann) max. peak let-through current curves form no. mv155 page 4 of 5 data sheet: 6701 recommended fuse clips for medium voltage fuses part fuse clip dimensions no. diameter a b c d e f g a3354710 2 3.74 1.97 2.00 1.18 4.53 1.50 .39 a3354730 3 4.13 2.44 3.00 1.18 5.63 1.50 .39 fuseclips are for single barrel applications up to 200e only. c b a g e f d 2-26-03 sb03044
e-rated medium voltage fuses mv155 for transformer and feeder protection 15.5 kv - cross reference data bussmann form no. mv155 page 5 of 5 data sheet: 6701 the only controlled copy of this data sheet is the electronic read-only version located on the bussmann network drive. all oth er copies of this bif document are by definition uncontrolled.this bulletin is intended to clear- ly present comprehensive product data and provide technical information that will help the end user with design applications. b ussmann reserves the right, without notice, to change design or construction of any prod- ucts and to discontinue or limit distribution of any products. bussmann also reserves the right to change or update, without no tice, any technical information contained in this bulletin. once a product has been selected, it should be tested by the user in all possible applications. bussmann medium voltage cross reference clip overall sym. e ratings available s = single barrel d = double barrel kv dia. center length ka manufacturer 5 7 10 15 20 25 30 40 50 65 80 100 125 150 175 200 250 300 350 400 450 15.5 kv 2 15 18-3/4 50 bussmann s s s s s s s 17-3/100 50 gould? s s s s s s s 18-3/4 50 bussmann s s s s s s s s s s d d d d d 18-7/8 40 gould? s s s s s s s d d d 15.5 kv 3 15 18-7/8 50 westinghouse? s s s s s s s s s d d d d 18-7/8 40 general electric? s s s s s s s s d d d d d 15.5 kv 3 18 21-3/4 50 bussmann s s s s s d d 21-3/4 50 gould? s s s d d d d ? gould, westinghouse and general electric are general purpose fuses. catalog number cross reference bussmann gould (new) gould (old) westinghouse general electric mv155f1cbxxxxe a155f1coro-xxxe a1550x-xxxe-1b ---- ---- ---- mv155f1dbxxxxe a155f1doro-xxxe a1550x-xxxe-1f 15hle-xxxe 9f62dddxxx 9f60fmhxxx mv155f1dcxxxxe a155f1doro-xxxe a1550x-xxxe-1d ---- ---- ---- mv155f2dcxxxxe a155f2doro-xxxe a1550x-xxxe-1d ---- ---- ---- current-limiting medium voltage fuses are classified into three categories: full range - defined by ansi as ? fuse capable of interrupting all currents from the maximum rated interrupting current down to the minimum continuous current that causes melting of the fusible element(s), when the fuse is applied at the maximum ambient temperature specified by the manufacturer.? it is able to interrupt any normal 60 cycle current that will melt its element. general purpose - defined by ansi c37.40 as ? fuse capable of interrupting all currents from the maximum rated interrupting current down to the current that causes melting of the fusible element in one hour.? not all currents fall within this range. it is possible to receive an overcurrent lower than the value given by the one hour criterion. back-up - defined by ansi c37.40 as ? fuse capable of interrupting all currents from the maximum rated interrupting current down to the rated minimum interrupting current.? the minimum rated interrupting current is the lowest current that the fuse wi ll be able to clear properly. this creates a need to place a low current interrupting device in series with the back-up rated fuse. all bussmann mv series medium voltage fuses are e-rated and offer full range protection. 2-26-03 sb03044
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