Bussmann® E-Rated Medium Voltage Fuses MV155 For Transformer and Feeder Protection 15.5 kV Electrical Characteristics Part Numbers† Ampere Rating Min/ Melt I2t Max. Clear I2t MV155F1CBX5E 5A 180 2900 MV155F1CBX7E 7A 850 8000 MV155F1CBX10E 10A 850 8000 MV155F1CBX15E 15A 2070 12000 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 MV155F1DBX50E 50A 13600 90000 MV155F1DBX65E 65A 30700 181000 MV155F1DBX80E 80A 54600 270000 MV155F1DBX100E 100A 116200 600000 MV155F2DBX125E 125A 123000 677000 MV155F2DBX150E 150A 218700 1287000 MV155F2DBX175E 175A 314700 1689000 MV155F2DBX200E 200A 465100 2405000 MV155F1DCX65E 65A 30700 181000 MV155F1DCX80E 80A 54600 270000 MV155F1DCX100E 100A 116200 600000 MV155F2DCX125E MV155F2DCX150E 125A 150A 123000 218700 677000 1287000 MV155F2DCX175E 175A 314700 1689000 MV155F2DCX200E 200A 465100 2405000 Physical Size (inches) Length Dia. Clip Center Barrels 18.75 2 15 1 18.75 3 15 1 18.75 3 15 2 21.75 3 18 1 21.75 3 18 2 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 surrounding 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 I2t to guarantee undamaged elements. This test does not affect undamaged elements. A damaged element completely opens when subjected to 90% of the minimum melt I2t, allowing it to be detected by a resistance check. • Full Range Fuses. Bussmann medium voltage fuses provide full range protection and are capable of interrupting 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. † To order with the optional striker pin, see Part Number Construction chart below. Part Number Construction Example Medium Voltage Voltage Rating MV 155 F 055 = 5.5 kV F = Full Range 155 = 15.5 kV Number of Barrels Barrel Diameter Clip Center Distance Indication Type Ampere Rating 1 C B X 5E 1 C = 2 inches A = 12 inches X = Indicator only 2 D = 3 inches B = 15 inches S = Striker Pin C = 18 inches 2-26-03 SB03044 Form No. MV155 Page 1 of 5 Data Sheet: 6701 Bussmann® E-Rated Medium Voltage Fuses MV155 For Transformer and Feeder Protection 15.5 kV - MV155F1CB Series 100 AMPERE RATING 100 10 .01 100 10 10 .01 7,000 .1 1,000 .1 7,000 1 1,000 1 100 TIME IN SECONDS 10 TIME IN SECONDS 15A 20A 25A 30A 15A 20A 25A 30A 5A 7A 10A AMPERE RATING 5A 7A 10A Time-Current Characteristics Total Clearing Time-Current Characteristics Minimum Melt CURRENT IN AMPERES CURRENT IN AMPERES MV155F1CBX 18.61" 17.77" 2.03" .21" BUSSMANN .63" Ø2.095" INDICATOR 15.00" CLIP CENTER 2-26-03 SB03044 POSITION OF BLOWN INDICATOR AFTER OPERATING. Form No. MV155 Page 2 of 5 Data Sheet: 6701 Bussmann® E-Rated Medium Voltage Fuses MV155 For Transformer and Feeder Protection 15.5 kV - MV155F1DB & MV155F1DC Series Time-Current Characteristics Minimum Melt Time-Current Characteristics Total Clearing 1000 100 200A 125A 150A 175A 50A 65A 80A 100A 10A 15A 20A 25A 30A 40A 200A 125A 150A 175A 10A 15A 20A 25A 30A 40A 50A 65A 80A 100A 1000 100 10 TIME IN SECONDS TIME IN SECONDS 10 1 1 .1 .1 DOUBLE BARREL FUSE ASSY. DOUBLE BARREL FUSE ASSY. SINGLE BARREL FUSE ASSY. SINGLE BARREL FUSE ASSY. MV155F1DBX Double Barrel Dimensions 18.61" 17.77" .21" 2.40" BUSSMANN .63" Ø2.96" Ø1.30" INDICATOR Ø3.38" 15.00" POSITION OF BLOWN INDICATOR AFTER OPERATING. CLIP CENTER 3.50" 6.68" MV155F1DCX 21.61" 20.77" 2.40" .21" Ø2.96" BUSSMANN .63" INDICATOR Ø3.38" 18.00" Ø1.30" POSITION OF BLOWN INDICATOR AFTER OPERATING. CLIP CENTER 2-26-03 SB03044 Form No. MV155 Page 3 of 5 Data Sheet: 6701 20000 CURRENT IN AMPERES 10000 10 1000 CURRENT IN AMPERES .01 100 20000 10000 1000 100 10 .01 Bussmann® E-Rated Medium Voltage Fuses MV155 For Transformer and Feeder Protection 15.5 kV - Peak Arc Voltage & Peak Let-Through Data Max. Peak Let-Through Current Curves MAXIMUM PEAK ARC VOLTAGE FOR "E" RATED FULL RANGE POWER FUSE (BUSSMANN) B 100 50 200A 175A 150A 125A 100A 80A 65A MAXIMUM PEAK ARC VOLTAGE (KV) 50A 30&40A 10 25A 20A 15A 07&10A 05A 1 30 20 10 A 20 0 15 0 AVAILABLE CURRENT IN KILOAMPERES (RMS Symmetrical) 10 10 1 .1 5 .1 100 MAXIMUM LET-THROUGH (Peak Kiloamperes) 40 CIRCUIT VOLTAGE (KV) Recommended Fuse Clips for Medium Voltage Fuses Part No. A3354710 A3354730 Fuse Clip Dimensions Diameter A B 2” 3” 3.74” 4.13” 1.97” 2.44” C 2.00” 3.00” D E F G 1.18” 4.53” 1.50” .39” 1.18” 5.63” 1.50” .39” Fuseclips are for single barrel applications up to 200E only. C A G F D E B 2-26-03 SB03044 Form No. MV155 Page 4 of 5 Data Sheet: 6701 Bussmann® E-Rated Medium Voltage Fuses MV155 For Transformer and Feeder Protection 15.5 kV - Cross Reference Data Catalog Number Cross Reference Bussmann Gould (New) Gould (Old) Westinghouse MV155F1CBXxxxE A155F1CORO-xxxE A1550X-xxxE-1B ---- ---- General Electric ---- MV155F1DBXxxxE A155F1DORO-xxxE A1550X-xxxE-1F 15HLE-xxxE 9F62DDDxxx 9F60FMHxxx MV155F1DCXxxxE A155F1DORO-xxxE A1550X-xxxE-1D ---- ---- ---- MV155F2DCXxxxE A155F2DORO-xxxE A1550X-xxxE-1D ---- ---- ---- Bussmann Medium Voltage Cross Reference Overall Sym. Length kA Manufacturer 18-3/4” 50 Bussmann 15.5 kV 17-3/100” 50 Gould† 18-3/4” 50 Bussmann 18-7/8” 40 Gould† 15.5 kV 3” 15” 18-7/8” 50 Westinghouse† 18-7/8” 40 General Electric† 3” 18” 21-3/4” 50 Bussmann 15.5 kV 21-3/4” 50 Gould† † Gould, Westinghouse and General Electric are General Purpose Fuses. kV Dia. 2” Clip Center 15” E Ratings Available 5 7 10 15 S S S S S S S S S S S S S = Single Barrel 20 S S S S S S 25 S S S S S S 30 S S S S S S D = Double Barrel 40 50 65 80 S S S S S S S S S D S S S S S D S S S S 100 125 150 175 S D S S S S 200 250 300 350 400 450 D D D D D S D S D D D S D D D D D D D D D D D Current-limiting medium voltage fuses are classified into three categories: Full Range - defined by ANSI as “a 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 “a 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 “a 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 will 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. The only controlled copy of this Data Sheet is the electronic read-only version located on the Bussmann Network Drive. All other copies of this BIF document are by definition uncontrolled.This bulletin is intended to clearly present comprehensive product data and provide technical information that will help the end user with design applications. Bussmann reserves the right, without notice, to change design or construction of any products and to discontinue or limit distribution of any products. Bussmann also reserves the right to change or update, without notice, any technical information contained in this bulletin. Once a product has been selected, it should be tested by the user in all possible applications. 2-26-03 SB03044 Form No. MV155 Page 5 of 5 Data Sheet: 6701