Medium Voltage Fuses - Cooper Bussmann

1 71 MediumVoltageFusesSection ContentsPageIntroduction .. 72E-Rated FuesFor transformers & feeders ..75CL-14 & bolt-in .. 76CL-14 ..77 For potential & small power transformers .. 78-79R-Rated Fuses for motor circuit protection .. 80-82 British IEC Fuses for motor circuit protection .. 83 DIN IEC Fuses for transformer protection .. 84 Potential transformer Fuses .. 85 British IEC Fuses for oil-filled switchgear .. 86 Fast-acting Fuses .. 87 EEI-NEMA Type K & T and Type H & N Fuses .. 88 BBU Boric acid Fuses ..89-90 Fuseclips for Medium and high Voltage Fuses .. 91 Medium Voltage FusesFor detailed information, visit the Electrical IEC section at Voltage FusesMedium Voltage FusesWorldwide Circuit Protection SolutionsCooper Bussmann is a world-leading supplier of mediumvoltage Fuses .

2 Each product is backed by an efficient worldwide distribution network with unrivaled service andtechnical support. Cooper Bussmann circuit protection solutions comply with major international standards: ANSI,BS, DIN, IEC and TypesMedium Voltage Fuses generally fit into two categories expulsion Fuses and current limiting Fuses . The definitions perANSI are:Expulsion fuse : A vented fuse in which the expulsion effectof the gases produced by internal arcing, either alone oraided by other mechanisms results in current interruption. Expulsion Fuses will limit the duration of an overcurrentevent, but they will not limit the magnitude of fault Bussmann offers two types of expulsion Fuses :replacement fuse links for fused cutouts and boric Limiting fuse : A fuse unit that, when in its current-responsive element is melted by a current within the fuse sspecified current-limiting range, abruptly introduces a highresistance to reduce current magnitude and duration, resulting in subsequent current interruption.

3 A current limiting fuse will reduce the magnitude a fault current as wellas limit the duration of the overcurrent event when operatingin its current limiting range. Cooper Bussmann offers a broadrange of current limiting Fuses for protection of feeders,transformers and motor circuits designed to ANSI, BS, DINand IEC Voltage Current Limiting FusesCurrent limiting Fuses are classified into three categories:1. Full Range defined by ANSI as a fuse capableof interrupting all currents from the maximum rated interrupting current down to the minimum continuous currentthat causes the melting of the fusible element(s), when thefuse is applied at the maximum ambient temperature specified by the manufacturer.

4 It is able to interrupt any current that will melt its General Purpose defined by ANSI as a fusecapable of interrupting all currents from the maximum ratedinterrupting current down to the current that causes meltingof the fusible element(s) in one hour. Not all currents fallwithin this range. It is possible for the fuse to be exposed toan overcurrent lower than the value given by the one hourcriteria. In that case, a different overcurrent protection devicewould be required to interrupt the Back-up defined by ANSI as a fuse capable ofinterrupting all currents from the maximum interrupting ratingcurrent down to the minimum interrupting current.

5 The minimum interrupting current is the lowest current thatthe fuse will be able to clear properly. This creates a need toplace a low current interrupting device, such as motor overloads, in series with the back-up rated and R-Rated FusesIn North America, current limiting Fuses typically fall into thecategory of E-Rated Fuses and R-Rated Fuses . CooperBussmann also offers a wide range of current limiting fusesdesigned to BS, DIN and IEC Fuses are used to protect feeder circuits, powertransformers and potential transformers. E-Rated Fuses havedefined current response times specified by ANSI E-Rated Fuses 100A and below must melt in 300sec at anrms current within the range of 200% to 240% of the continuous current rating.

6 E-Rated Fuses above 100A mustmelt in 600sec at an rms current within the range of 240% to264% of the continuous current rating of the fuse . CooperBussmann offers a wide variety of full range and general purpose E-Rated Fuses from up to Fuses are back-up Fuses that provide short-circuitprotection for motor circuits. They are applied with MV motorstarters which provide the overload protection for the Fuses also have defined current response timesspecified by ANSI R-Rated Fuses will melt in a rangeof 15 35sec at a current equal to 100 times the R Bussmann offers , , and R-Rated Fuses for motor circuit product data sheets, visit Voltage FusesMV055 andMV155 SpecificationsDescription:E-ratedmedium, Voltage current-limiting Fuses : for transformer and feeder :See Catalog Numbers :Silver ribbon element surrounded by silicafiller housed in a fiberglass tube and plated endcaps.

7 Anepoxy paint protects the fuse tube from the surrounding :Volts: (5-450A) (5-200A)Amps: 5-450A ( ) 5-200A ( )IR: 50kA Sym. MaxAgency Information:Meets E requirements per , Meets full range requirements per ANSI Features and Benefits Standard clip center distance of 12 inches with 2 and 3 inchbarrel diameters for retrofitting in existing hardware Open fuse indicator for ease in troubleshooting Full range rating with 50,000 Interrupting Rating Double pulsed at 90% of minimum I2t to establish manufacturing reliabilityMV055 Typical Applications Transformer Primary Protection Feeder Circuit Protection Voltage Switches Metal-enclosed SwitchgearMV155 Features and Benefits Standard clip center distance of 15 and 18 inches with 2 and3 inch barrel diameters for retrofitting in existing hardware Open fuse indicator for ease in troubleshooting Full range rating with 50.

8 000 Interrupting Rating Double pulsed at 90% of minimum I2t to establish manufacturing reliabilityMV155 Typical Applications Transformer Primary Protection Feeder Circuit Protection Voltage Switches Metal-enclosed SwitchgearE-rated Fuses for Transformers and Catalog NumbersMMiinnMMaaxxDDiimmeennssiioonnss* * ,900 ,000MV155F1 CBX10E108508,000MV155F1 CBX15E152,07012,0002MV155F1 CBX20E202,37023,000MV155F1 CBX25E254,65031,000MV155F1 CBX30E309,49045,000MV155F1 DBX10E108508,000 3151MV155F1 DBX15E152,07012,000MV155F1 DBX20E202,37023,000MV155F1 DBX25E254,65031,000MV155F1 DBX30E309,49045,000MV155F1 DBX40E409,49045,000MV155F1 DBX50E5013,60090,000MV155F1 DBX65E6530,700181,000MV155F1 DBX80E8054,600270,000MV155F1 DBX100E100116,200600,000MV155F2 DBX125E125 123,000677,000 3152MV155F2 DBX150E150 218,700 1,287,000MV155F2 DBX175E175 314,700 1,689,000MV155F2 DBX200E200 465,100 2,405,000MV155F1 DCX65E6530,700181,000 3181MV155F1 DCX80E8054,600270,000MV155F1 DCX100E100116,200600,000MV155F2 DCX125E125 123,000677,000 3182MV155F2 DCX150E150 218,700 1,287,000MV155F2 DCX175E175 314,700 1,689,000MV155F2 DCX200E200 465,100 2,405.

9 000*1 = Sheet: 6700 Data Sheet: 6701 (MV155) Catalog NumbersMMiinnMMaaxxDDiimmeennssiioonnss ((iinn))** ,400 2 121MV055F1 CAX7E78508,000MV055F1 CAX10E108508,000MV055F1 CAX15E152,07011,000MV055F1 CAX20E202,37023,000MV055F1 CAX25E254,65031,000MV055F1 CAX30E309,49045,000MV055F1 CAX40E409,49045,000MV055F1 CAX50E5013,60090,000MV055F1 CAX65E6530,700181,000MV055F1 DAX10E108508,000 3 121MV055F1 DAX15E152,07012,000MV055F1 DAX20E202,37023,000MV055F1 DAX25E254,65031,000MV055F1 DAX30E309,49045,000MV055F1 DAX40E409,49045,000MV055F1 DAX50E5013,60090,000MV055F1 DAX65E6530,700181,000MV055F1 DAX80E8054,600270,000MV055F1 DAX100E 100116,200580,000MV055F1 DAX125E 125167,400600.

10 000 3 121MV055F1 DAX150E 150218,700786,000MV055F1 DAX175E 175227,900 1,100,000MV055F1 DAX200E 200297,600 1,520,000MV055F2 DAX250E 250669,600 2,400,000 3 122MV055F2 DAX300E 300874,800 3,149,000MV055F2 DAX350E 350911,600 4,376,000MV055F2 DAX400E 400 1,190,400 6,071,000MV055F2 DAX450E 450 1,555,000 9,796,0001 = fuse Clips - see page fuse Clips - see page 91 For product data sheets, visit Voltage FusesJCX, JCY, JCU, JCZand JDZS pecificationsDescription:Indoor/enclosur e E-rated Medium Voltage , current-limiting Fuses for feeders andpower transformers with blown :See CatalogNumbers :plated :Volts: 2750-8300V (See Catalog Numbers table fordetails)Amps: 1 2-750 AIR.