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24FFMSJ45

P1-P3P4-P6P7-P9P10-P12P13-P14
15
DIN - Fuse Links
Min
Max
Min Max
Transformer Primary Voltage
Tranformer
Rating
(kVA)
10
(kV)
20
(kV)
Rated Current of the
High Voltage Fuse Link
Rated Current of the
High Voltage Fuse Link
50
100
125
160
200
250
315
400
500
630
800
1000
6.3
10
16
16
20
25
31.5
40
50
63
80
100
10
20
25
31.5
40
50
63
80
100
100
100
100
6.3
6.3
6.3
10
10
16
16
20
25
31.5
40
45
6.3
10
16
16
20
25
31.5
40
45
45
45
45
General guide to the selection of DIN Fuse Links for use in the primary circuit of three phase transformers
For HV DIN fuse links type FDLSJ, FFLSJ, FXLSJ, FDMSJ, FFMSJ. Selection guide using LV fuse links operating
class gG/gL on low voltage side for individual cable exit protection.
For more information visit our website www.bussmann.com
Min
Max
Min Max Min
Max
Transformer Primary Voltage
Tranformer
Rating
(kVA)
10
(kV)
20
(kV)
30
(kV)
Rated Current of the
High Voltage Fuse Link
Rated Current of the
High Voltage Fuse Link
Rated Current of the
High Voltage Fuse Link
Low Voltage
NH Fuse Size
gTr
(A)
100
125
160
200
250
315
400
500
630
800
1000
100
125
160
200
250
315
400
500
630
800
1000
16
16
20
25
31.5
40
50
63
80
100
125
16
16
25
31.5
40
50
63
80
100
125
160
10
10
16
16
16
25
25
31.5
40
63
63
10
10
16
16
25
25
31.5
40
50
63
80
6.3
10
10
16
16
20
25
25
31.5
40
40
6.3
10
10
16
20
25
25
31.5
40
50
50
For HV DIN fuse links type SXLSJ, SDLSJ, SFLSJ, SKLSJ, SDMSJ, SFMSJ, SXMSJ SDQSJ, SFQSJ. Selection guide
according to DIN VDE 0670 part 402 using LV fuse links operating class gTr on low voltage side for overload
protection of the transformer.
1. The fuse link should withstand transformer magnetising inrush
currents, taken as 12 times full load current for 0.1 seconds.
2. The fuse link should discriminate with the rating of secondary
fuse link stated or where only individual cable exit protection
exists, the highest rating likely to be used.
3. The fuse link should operate within 2 seconds for transformers
complying with IEC60076 - 5 in respect of impedance, voltage
and short circuit withstand current.
4. The fuse link should operate reasonably quickly in the event of a
transformer internal fault, or an earth fault in the secondary
terminal zone of the transformer.
5. In the case where there is no secondary fuse link for overload
protection, the minimum recommended HV fuse link rating
applies to the use of fuse links in encapsulated enclosures where
permissible continuous overload is generally limited to 20% of
transformer full load current. However if greater overload currents
are permissible a higher rating of fuse link may be required.
Where the fuse link is used in open air or conditions of unrestricted
ventilation a higher permissible overload may be possible.
6. In most cases more than one rating of HV fuse link is recommended
for a particular transformer size. Choice of fuse link will then
depend on which fuse offers the best protection e.g. having one fuse
for several transformer sizes.
Recommendations for other voltages are available on request.
Selection of these HV fuse links has been based on the following:
Selection Table for Back-up Fuse LinksSelection Table for Full Range Fuse Links
16
DIN - Fuse Links
Min Max Min Max
Transformer Primary Voltage
Tranformer
Rating
(kVA)
10
(kV)
20
(kV)
Rated Current of the
High Voltage Fuse Link
Rated Current of the
High Voltage Fuse Link
100
125
160
200
250
315
400
500
630
800
1000
100
125
160
200
250
315
400
500
630
800
1000
10
16
16
20
25
40
40
50
80
100
100
20
25
31.5
40
50
63
80
100
100
100
100
6.3
10
10
16
20
20
25
31.5
40
45
-
10
16
16
20
25
31.5
40
45
45
45
-
Low Voltage
NH Fuse Size
gTr
(kVA)
General guide to the selection of DIN Fuse Links for use in the primary circuit of three phase transformers
For fuse links type FDLSJ, FFLSJ, FXLSJ, FDMSJ, FFMSJ. Selection guide according to DIN VDE O670 part 402
using LV fuse links operating class gTr on low voltage side for overload protection of the transformer.
Min Max Min Max
Transformer Primary Voltage
Tranformer
Rating
(kVA)
10
(kV)
20
(kV)
Rated Current of the
High Voltage Fuse Link
Rated Current of the
High Voltage Fuse Link
50
100
125
160
200
250
315
400
500
630
800
80
125
160
200
250
315
400
500
630
800
1000
6.3
10
16
16
20
31.5
40
40
50
100
100
6.3
10
16
20
31.5
40
40
63
63
100
100
6.3
10
10
16
16
16
20
25
31.5
40
-
6.3
10
10
16
16
20
20
31.5
40
45
-
Low Voltage
NH Fuse Size
gG/gL
(A)
For HV DIN fuse links type FDLSJ, FFLSJ, FXLSJ, FDMSJ, FFMSJ. Selection guide using LV fuse links operating
class gG/gL on low voltage side for overload protection of the transformer.
1. The fuse link should withstand transformer magnetising inrush
currents, taken as 12 times full load current for 0.1 seconds.
2. The fuse link should discriminate with the rating of secondary
fuse link stated or where only individual cable exit protection
exists, the highest rating likely to be used.
3. The fuse link should operate within 2 seconds for transformers
complying with IEC60076 - 5 in respect of impedance, voltage
and short circuit withstand current.
4. The fuse link should operate reasonably quickly in the event of a
transformer internal fault, or an earth fault in the secondary
terminal zone of the transformer.
5. In the case where there is no secondary fuse link for overload
protection, the minimum recommended HV fuse link rating
applies to the use of fuse links in encapsulated enclosures where
permissible continuous overload is generally limited to 20% of
transformer full load current. However if greater overload currents
are permissible a higher rating of fuse link may be required.
Where the fuse link is used in open air or conditions of unrestricted
ventilation a higher permissible overload may be possible.
6. In most cases more than one rating of HV fuse link is recommended
for a particular transformer size. Choice of fuse link will then
depend on which fuse offers the best protection e.g. having one fuse
for several transformer sizes.
Recommendations for other voltages are available on request.
Selection of these HV fuse links has been based on the following:
For more information visit our website www.bussmann.com
Selection Table for Full Range Fuse LinksSelection Table for Full Range Fuse Links
P1-P3P4-P6P7-P9P10-P12P13-P14

24FFMSJ45

Mfr. #:
Buy 24FFMSJ45
Manufacturer:
Bussmann / Eaton
Description:
Specialty Fuses 24KV 45A F/R DIN1085
Lifecycle:
New from this manufacturer.
Delivery:
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