abb high voltage hrc fuses abb hrc hv fuses

7/29/2019 Abb High Voltage Hrc Fuses Abb Hrc Hv Fuses

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Medium Voltage HRC FUSES

Catalogue sheet B30/06.03e


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1. FEATURES

High rupturing capacity Shortcircuit current limiting Low rated minimum breaking current (I

min)

Low switching overvoltages (Um)

Can be used with switch disconnector (it is fitted witha mediumsize striker pin)

Dimensions acc. to DIN and IEC Standards.

2. APPLICATIONS

The HRC (high rupturing capacity) fuselinks are usedto protect transformers, capacitor banks, cable andoverhead lines against shortcircuits. They protectswitchgears from thermal and electromagnetic effects ofheavy shortcircuit currents by limiting the peak currentvalues (cutoff characteristic) and interrupting the currentsin several milliseconds.

The type BWMW fuselinks interrupt overloadcurrents greater than I

min(for the I

minvalues refer to Table 1).

In situations where overloads lower than Imin are to beinterrupted by the protective system, a switchdisconnector fitted with an overcurrent protecting deviceis to be used together with the type BWMW fuselinks.

BWMW fuselinks can be used with type BWMP,BWMPE, BWMPNS, BWMPNW and BPS01 fusebasesas well as type OR5 or NALF switchdisconnectors.

3. ENVIRONMENTAL OPERATINGCONDITIONS

BWMW fuselinks can be operated under the followingenvironmental conditions:

on indoor and outdoor equipment, at ambient temperatures of 30oC to +40oC, at relative humidity of ambient air of 100% at

a temperature of +20oC.

4. DESIGNATIONS VERSIONS

4.1 BWMWfuselinks numbering systemThe numbering system for the BWMW fuselinks has

four alphanumerical sections as shown in the diagrambelow.

4.2 BWMPfusebase numbering system

The numbering system for the BWMP fusebase hasfour alphanumerical sections as shown in the diagrambelow.

BWMW 7,2 / 100 1

Fuselink Rated Rated Additional

type voltage current designation:

BWMW 7,27,2 kV 3,15 A

1212 kV 6,3 A

2424 kV 10 A

3636 kV 16 A

20 A

25 A

31,5 A

40 A

56 A

63 A

80 A100 A

Type BWMW 7,2

/63;80;100 A

Fuselinks

version that

is 292 mm long

A fuselink when mounted on its fusebase makesa complete fuse. For a list of fuse bases refer to Table 2.

5. COMPLIANCE WITHSTANDARDS

The fuselinks meet the requirements of thefollowing Standards:

Polish Standard PN92/E06110 Polish Standard PN86/E06114 International Standard IEC 2821: 1994 International Standard IEC 644 of 1979 German Standard DIN 43625 Russian Standard GOST 2213: 1979

The fusebases meet the requirements of thefollowing Standards:

Polish Standard PN77/E06110

International Standard IEC 2821: 1994 German Standard DIN 43625

6. HOW TO ORDER

Order by specifying the product name, type symbol,rated voltage, rated current and quantity.

All additional demands which are not listed in thisCatalogue should be agreed with the manufacturer bymeans of an Inquiry where the sources of requirements(regulations, standards, etc.) are to be specified.

6.1 Order example

1. Type BWMW7.2/100 High Rupturing Capacity Fuselink for a rated voltage of 7.2 kV, a rated current of100 A

2. Type BWMPNW12/56 Outdoor Fusebase for a ratedvoltage of 12 kV, a rated current of 56 A. 20 pcs

3. Type BWMW36/20 High Rupturing Capacity Fuselink for a rated voltage of 36 kV, a rated current of 20 A

4. Type BWMPNS36/40 OutdoorStanding Fusebasefor a rated voltage of 36 kV, a rated current of 40 A. 20 pcs.

BWMP E 7,2 / 56

Fuse base Insulator Rated Rated

type type voltage current

BWMP E resin 7,27,2 kV 40 A

NS outdoor 1212 kV 50 A

porcelain 2424 kV 56 Astandinginsulator 3636 kV 63 A

NW outdoor 100 A

porcelain (Refer to Table 2)

suspented insulator

No designation indoor

porcelain insulator


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Fusebase type

Ratedvoltage

Ratedcurrent

Ratedfrequency

Weight

Related fuselink

Un In f

kV A Hz kg

BWMP7,2/567,2

56 5.4 BWMW7,2/3,15 56

BWMP7,2/100 100 6.1 BWMW7,2/63100

BWMP12/5612

56 5.6 BWMW12/3,1556

BWMP12/100 100 50;60 6.2 BWMW12/63100

BWMP24/5024

50 8.7 BWMW24/3,1550

BWMP24/63 63 8.9 BWMW24/63

BWMP36/40 36 40 15.0 BWMW36/3,1540

BWMPE7,2/56

7,2

56 3.4 BWMW7,2/3,15 56

BWMPE7,2/100 100 4.1 BWMW7,2/63100

BWMPE12/56 12 56 3.6 BWMW12/3,1556

BWMPE12/100 100 50;60 4.2 BWMW12/63100

BWMPE24/50 24 50 4.8 BWMW24/3,1550

BWMPE24/63 63 5.0 BWMW24/63

BWMPE36/40 36 40 6.2 BWMW36/3,1540

BWMPNS7,2/567,2

56 BWMW7,2/3,15 56

BWMPNS7,2/100 100 BWMW7,2/63100

BWMPNS12/56 12 56 BWMW12/3,1556

BWMPNS12/100 100 50;60 BWMW12/63100

BWMPNS24/5024

50 17.6 BWMW24/3,1550

BWMPNS24/63 63 18.1 BWMW24/63

BWMPNS36/40 36 40 27.4 BWMW36/3,1540

BWMPNW7,2/567,2

56 BWMW7,2/3,15 56

BWMPNW7,2/100 100 BWMW7,2/63100

BWMPNW12/5612

56 BWMW12/3,1556

BWMPNW12/100 100 50;60 BWMW12/63100

BWMPNW24/5024

50 17.6 BWMW24/3,1550

BWMPNW24/63 63 18.1 BWMW24/63

BWMPNW36/40 36 40 27.4 BWMW36/3,1540

7.2 Fuse bases specifications

BWMP An indoor fusebase with porcelain insulators

BWMPE An indoor fusebase with resin insulators

BWMPNS An outdoor fusebase with porcelain insulators

BWMPNW An outdoor suspended fusebase with porcelain insulators

Table 2


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Type BWMW highrupturingcapacity fuselink

Notes:1. Contact End Caps: silverplated brass2. Deviations of dimensions with no tolerance specified shall be within 3%.

FL Striker Pin Characteristic

Striker Pin free stroke is 4 mm


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8. CONSTRUCTION ANDOPERATION

8.1 Construction and operation of fuselinksA fuselink consists of an insulation tube whose both

ends are terminated with end caps. Fuse elements aremade from specially profiled silver wire and are helicallywound on a porcelain winding stick. Additional fusibleelement intended to control operation of the striker pin

is located in a coaxial hole of the stick. The fuse interioris filled with arcquenching material whose chemicalcomposition and granularity have been appropriatelychosen. The fuselink is sealed at its both ends.

A springtype striker pin is located in one endcapand its forced movement can be employed to trip anoperating mechanism of a switchdisconnector or totrigger alarm and auxiliary circuits.

The fuse operation depends on automatic oneoffinterruption of the fault current in the protected circuitby melting of the fuse element and quenching theelectric arc produced in the fuselink interior. The

operation is indicated by the striker pin which has nowmoved to its tripped position.

The fuselink limits the peak value of the shortcircuitcurrent and in consequence effectively protects thecircuit against thermal and electromagnetic effects ofshortcircuits.

8.2 Construction of fuse basesThe fusebase consists of a steel beam fitted with

a protective earthing terminal and two indoor supportinsulators. Two sets of contacts are mounted on theupper side of the insulator. The set of contacts consistsof a contact spring, compression spring, and terminals.

9. PRINCIPLES OF FUSELINKSSELECTION

9.1 Selection of rated voltageThe rated voltage for a fuselink is to be selected in the

following way: if the fuselink is to be operated in an earthed neutral

threephase network, the rated voltage for the fuselinkis to be equal to at least linetoline voltage in the circuitto be protected,

if the fuselink is to be operated in a singlephase

network, the rated voltage for the fuselink is to be equalto at least 115% of the highest voltage in the circuit to beprotected,

if the fuselink is to be operated in an insulated neutralthreephase network or a network compensated by meansof earth fault neutraliser, the rated voltage for the fuselink is to be equal to at least 115% of the linetolinevoltage in this network as double earth faults are possible.

It should be however noted that in situations where a

fuselink featuring an excessive rated voltage has beenselected, excessively high voltages for the circuit underconsideration might occur. Refer to Table 1 for the limitingovervoltage values for this family of fuselinks. Should itbe necessary to obtain more detailed data on theovervoltages, please call the fuse manufacturer.

9.2 Selection of rated currentThe rated current of a fuselink is usually greater than

a longterm load for the circuit under consideration. While

selecting the rated current, the following should be takeninto account.

longterm current load and operating overloads forthe circuit under consideration,

transient overloads involved into such actions asswitching power on and off for such equipment astransformers, electric motors, and capacitor banks,

coordination with other devices intended to protectthe circuit under consideration.

The rated current is determined by heating of a singlefuselink under free air conditions at an ambienttemperature of +10oC to +40oC.

In situations where the fuselinks are to be used inenclosures, cabinets and at places and in a mannermaking heat transfer more difficult or if the fuselinks areto operate at an ambient temperature higher than +35oC,lowering of the rated current value can be required to takethe actual conditions of heat transfer into account.

Refer to Table 3 for selection of fuselinks rated currentrecommended for protecting transformers.

The selection presented above has been developed for atransformer overloaded up to 1.5 In when a condition of

if01

> 12 In, is met, where:

if01

minimum current value corresponding to a prearcing

time of 0.1 sec.I

n rated voltage of the transformer

12 In; 0,1 sec. parameters of the assumed making current

for the transformer.

However, in situations where actual making current valueand waveform are known the fuselink is to be selectedindividually. Besides, when a transformer protecting systemis designed, the recommendations of IEC 787 Publicationof 1983 is to be taken into consideration.

It is suggested to test warm the equipment with fuses ata load of 1.5 In for the transformer to be protectedparticularly in cases where the correct selection is doubtfulor the fuses are installed in a manner and at places(enclosures, cabinets, partitions, neat other heat sources,at higher ambient temperatures, and etc.) worsening theheat transfer. Section can be accepted as satisfactory ifthe produced steady state temperaturerise limits do notexceed the values permitted by respective standards.


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Table 3. Selection of fuselinks rated current for transformers

Rated voltage of the transformer [kV]

Transformerrated power

[kVA]

6 10 15 20 30

Rated voltage for the fuselink

7,2 12 17,5 24 36

Fuselink rated current [A]

20 6,3 6,3 3,15 3,15

30 6,3 6,3 6,3 3,15 3,15

50 10 6,3 6,3 6,3 3,15

75 16 10 6,3 6,3 6,3

100 20 16 10 6,3 6,3

125 20 or 25 16 10 or 16 10 6,3

160 25 20 16 10 10

200 40 20 16 16 10

250 56 31,5 20 16 10

315 56 31,5 or 40 25 20 16

400 63 40 or 56 25 or 31,5 20 16

500 80 56 40 25 25

630 100 63 56 31,5 25

800 80 63 40 31,5

1000 100 63 50 40

1250 63

9.3. Selection of the fuselink rated current for electricmotors protection coordination principles

9.3.1 Selection of the fuselink rated current forelectric motors in a directonline startingarrangement

Electric motors by protected with switches (contactors,switch disconnectors) fitted with operating mechanismsand are additionally protected by fuses of specially selectedcharacteristics. The fuselink must be fitted with strikerpin whose mechanical energy is used to trigger the switch

disconnector.Difficulty with selection of the rated current for fuselinks

intended to protect electric motors in a directonlinestarting arrangement consists in the necessary immunityof fuses to consecutive overload pulses of the motorstartingup current.

For the fuse selection requirements, tests, andregulations concerned with motor protection systems referto IEC 644 Standard: 1979 and its Polish equivalent PN86/E06114.

The Types BWMW for rated voltages of 7.2 kV and 12kV and rated current range of 63 A to 100 A meet therequirements of the Standards mentioned above withrespect to their timecurrent curves and are featured bytheir kfactors determined by tests for a prearcing timeof 10 sec. with characteristic accuracy taken intoconsideration according to these Standards. For the valuesof kfactors refer to Table 4. The kfactor is to be used fordetermining the overload curve of fuselink.

According to these Standards, the kfactor valuesdetermined for a prearcing time of 10 sec. is valid formotor startingup periods of 5 to 60 sec if the rate of motorstarts is not greater than 6 per hour and no more than twoconsecutive starts per hour are made provided that thepeak value of the startingup current is not greater thanthe fullload value multiplied by a factor of 6.


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FuselinkFuse type

Un nDimensionL kfactor for part icular I

kV mm 63 A 80 A 100 A

BWMW 7,2 7,2 292 0,56 0,55 0,56

442 0,60 0,60 0,60

BWMW 12 12 537 0,60 0,59 0,59

Table 5. ifand i

rmax, values against sup periods

Un In DimensionL Startingup periods in seconds

kV A mm A 5 10 20 30 40 60

63 I f 210 190 170 160 155 145

I r max =k If 118 106 95 90 87 81

80 292 I f 300 270 240 230 215 205

I r max 165 148 132 126 118 113100 I f 400 360 320 300 285 270

7,2 I r max 224 201 179 168 159 151

63 I f 220 200 180 170 165 160

I r max 132 120 108 102 99 96

80 442 I f 300 270 240 230 215 205

I r max 180 162 144 138 129 123

100 I f 370 330 300 280 265 250

I r max 222 198 180 168 159 150

63 I f 220 200 180 170 165 160I r max 132 120 108 102 99 96

12 80 I f 300 270 240 230 215 205

557 I r max 177 159 142 136 127 121

100 I f 380 340 305 285 275 260

I r max 224 200 180 168 162 153

Table 4. kfactor Values

k If10

6

According to these Standards, the kfactor values

determined for a prearcing time of 10 sec. is valid formotor startingup periods of 5 to 60 sec if the rate of motorstarts is not greater than 6 per hour and no more than twoconsecutive starts per hour are made provided that thepeak value of the startingup current is not greater thanthe fullload value multiplied by a factor of 6.

Thus,

Ir k I

f10and I

ns

where:Ir

motor startingup current,

Ins

motor fullload current

if01 fusing current as read in the fuselink timecurrentcharacteristic for a prearcing time of 10 seconds.

If the actual startingup period differs from 10 seconds,a value of i

fis to be read in the fuselink timecurrent

characteristic for a prearcing time equal to the actualstartingup period (within a range of 5 to 60 seconds)and substituted in the formula.

To make the selection of fuse easier, Table 5 lists fusingcurrent values, i

f, and corresponding motor startingup

current values, irmax

against startingup periods 5, 10, 20,30, 40, and 60 seconds.


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Ir

6

190

6

Ir

k

190

0,59

ExampleSelect a fuselink of 12 kV rated voltage to protect

a motor having a startingup current of Ir= 190 A and

a startingup period tr= 12 seconds for a rate of motor

starts not greater than 6 per hour".First, you should compare the value of Ir to respective

ones listed in Table 4. In our case these are 10 s and 20 s.By comparing the respective values it can be seen that theproper fuselink is that having a current rating of 100 Abecause

Ir max 10

(200) > Ir(190) > I

r max 20(180)

Accurate check can be done by calculating:

If= = = 322 A

(Where the value of kfactor has been read in Table 2for 12 kV/100 A)

and reading the prearcing time amounting to 14 s (thus,greater than t

r= 12 s) from the appropriate timecurrent

curve (here 12 kV/100 A).The fullload of the motor for the selected fuselink

should not exceed a value of

Ins

31,7 A

Note: The Types BWMW7,2 kV / 63100 A are availablein two sizes of dimension L = 292 mm and 442 mm. Thoselonger ones (442 mm) should be selected if smaller ratedminimum fusing current I min offers a special attractionwhile by selecting the shorter ones (292 mm) the fusescan be installed at a location of smaller space.

The fuselinks selected in this way are intended foroperating under standard environmental conditions

specified for the types BWMW. Should it be necessary toinstall the fuselinks together with other devices in a closedenclosure it is necessary to check whether the ambienttemperature of the enclosure interior does not exceed thepermissible value of +35oC and, if necessary, a fuselinkof successive higher level of the rated current should thenbe selected.

9.3.2 How to select the rated current of fuselinkIntended to protect electric motors in anindirect starting arrangement

Because the fuselinks intended to protect electricmotors in an indirect starting arrangement are overloaded

with excessive pulses of the motorstartingup current,their rated current may be lower than that for the motorprotection in a directonline starting arrangement.

Provision for keeping fuselink temperature permanentlywithin the permissive temperaturerise limits in longtermduty of the motor to be protected irrespectively of theoperating overloads is a decisive selection factor.

To provide satisfactory operation without simultaneousfast deterioration of the fuselinks in the motor circuit inan indirect starting arrangement, the fuselink ratedcurrent should be always greater than the most severeload with operating overloads being taken into account.Therefore, it is recommended to select a rated current

equal to the motor fullload current multiplied by a factorof 1.5 to 2.

9.4 How to select the rated breaking current (Iws

) ofa fuselink

The rated breaking current (Iws

) of a fuselink is to beequal to at least an initial fault current (I

p) at the location

the fuselink is installed.

9.5 How to Select the Rated Peak Current(determining the required electromagneticstrength of the devices protected by means offuselinks)

According to the requirements of Polish Standard

PN74/E05002, the rated peak current insz

should fulfil the

following inequality condition

insz

iu

where: iu

(prospective) impulse short circuit current.

In situations where the fuse limits the value of prospective

impulse short circuit current, a product Iogr

h is to be substituted

instead of iu

in the relation presented above.

Where:

Iogr

fuse cutoff current for the prospective impulse short

circuit current. Iu

corresponding to the largest designed fuse

link.

h a factor depending on the fuse cutoff current characteristicband width. In situations where no accurate data is available, a

hfactor = 1.5 is to be accepted.


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Fig. 1 Cutoff current characteristics for the types BWMW7,2; 12; 24; 36 kVhigh rupturing capacity fuselinks


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time

current

time

current

Fig. 2 Timecurrent characteristics for the types BWMW7,2/3.15100 A(63 A excluded; dimension L = 292 mm); BWMW12/3,1540A and 63 A and 80 A Fuselinks

I3

Current Designations:

BWMW7.2 kV Fuselinks

q BWMW12 kV Fuselinks

Fig. 3 Timecurrent characteristics for the types BWMW7,2/63A (dimension L = 292 mm);BWMW24/3,1563A; BWMW12/56 and 100 A; and BWMW36/3,1540 A Fuselinks

I3

Current Designations:

BWMW7.2 kV Fuselinks BWMW24 kV Fuselinks

q BWMW12 kV Fuselinks BWMW36 kV Fuselinks


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Fusebase Dimensions

type A3 A2 A1 B2 B1 C D1

BWMP36/403801 6881 5381

3291 3941

BWMP24/63

BWMP24/50 3001 5931 4431 2391 3041

BWMP12/100 3801 6881 53810

105

85

75BWMP7,2/100 3001 5931 4431

BWMP12/56 1801 4451 2931 1591 2241BWMP7,2/56 551 3451 1931 351

Two 15 mm dia. holes

Type BWMP indoor highrupturingcapacity fusebase

Notes:1. Earthing Terminal; tinned steel.2. Connections: silverplated brass

3. Contact Springs: silverplated brass4. Deviations of dimensions with no tolerance specified shall be within 3%.


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Type BWMPE indoor highrupturingcapacity fusebase

Notes:1. Earthing Terminal; tinned steel.2. Connections: silverplated brass

3. Contact Springs: silverplated brass4. Deviations of dimensions with no tolerance specified shall be within 3%.

D

70

56

Fusebase Dimensions

type A3 A2 A1 B2 B1 C1

BWMPE36/403801 6881 5381

3261 3981

BWMPE24/63

BWMPE24/50 3001 5931 44312361 3081

BWMPE12/100 3801 6881 5381 0

BWMPE7,2/100 3001 5931 4431

BWMPE12/56 1801 4451 2931 1561 2281

BWMPE7,2/56 551 3451 1931 351


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Type BWMPNS outdoorstanding highrupturingcapacity fusebase

Notes:1. Earthing Terminal; tinned steel.2. Connections: silverplated brass3. Contact Springs: silverplated brass4. Deviations of dimensions with no tolerance specified shall be within 3%.

D

Fusebase Dimensions

type A4 A3 A2 A1 B2 B1 C1

BWMPNS36/40 72313801 6441 5381

4741 5421 155

BWMPNS24/63 70813341 4021

BWMPNS24/50 6131 3001 5491 4431

BWMPNS12/100 7081 3801 6441 5381

BWMPNS7,2/100 6131 3001 5491 44312441 3121

140

BWMPNS12/56 4631 1801 3991 2931

BWMPNS7,2/56 3631 551 2991 1931 351

0


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Type BWMPNW outdoorsuspension highrupturingcapacity fusebase

Notes:1. Earthing Terminal; tinned steel.2. Connections: silverplated brass3. Contact Springs: silverplated brass4. Deviations of dimensions with no tolerance specified shall be within 3%.

D

Fusebase Dimensions

type A4 A3 A2 A1 B2 B1 C1

BWMPNW36/40 7231

3801 6441 5381

4741 5421 155

BWMPNW24/63 70813341 4021

BWMPNW24/50 6131 3001 5491 4431

BWMPNW12/100 7081 3801 6441 5381 0

BWMPNW7,2/100 6131 3001 5491 44312441 3121

140

BWMPNW12/56 4631 1801 3991 2931

BWMPNW7,2/56 3631 551 2991 1931 351


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NewType

Edition0

8.

2001

ABB Zwar S.A.Export Department1, egaska Str.PL-04-713 Warsaw, POLANDphone: +48 22/51 52 831fax: +48 22/51 52 659e-mail: [email protected]

www.abb.comwww.abb.pl

Fusebase type BPS01 is intended for indoor use with MV fuselinks rated at up to 7.2 kV / 200 A. The fusebase fitted withfuselinks may be used for protecting transformers or electric motors. The BPS01 fusebase is equipped with auxiliary circuitrywhich, when the fuse operates, may be used to trigger other switchgear equipment or indicate fuse operation at a distance, forexample in the control room. Another advantage of the fusebase is such that it may be used with fuses of different lengths. Thedimensions of the fuselink, to be used with the BPS01 fusebase, must comply with the DIN 43625 standard and the fuselink must be fitted with a striker pin to ensure proper operation of the fusebase auxiliary circuitry. The BPS01 fusebase isparticularly recommended for use with the BWMW, CEF and CMF type of fuselinks.

Type BPS01 indoorhighrupturingcapacity fusebase

Information given in this publication is generallyapplicable to equipment described. Changes maybe made in future without notice.

Note: Due to the introduction of improvements, the right is reserved to modify the products.

CABLE JOINTS, CABLE TERMINATIONS, CABLE GLANDS, CABLE CLEATSFEEDER PILLARS, FUSE LINKS, ARC FLASH, CABLE ROLLERS, CUT-OUTS

11KV 33KV CABLE JOINTS & CABLE TERMINATIONSFURSE EARTHINGwww.cablejoints.co.uk

Thorne and Derrick UK

Tel 0044 191 490 1547 Fax 0044 191 477 5371Tel 0044 117 977 4647 Fax 0044 117 9775582

abb high voltage hrc fuses abb hrc hv fuses

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