High voltage inserts for transformers
  • High voltage inserts for transformers

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Manufacturer: EATON Bussmann

High voltage inserts for transformers

COOPER BUSSMANN produces following high voltage fuse inserts:
•Short circuit current limit   non full range „S” and full range„F” in    DIN standard,
• Short circuit current limit     for connection devices with oil insulation
• Short circuit current limit    for air application,
• motor inserts,
• voltage transducers inserts,
• and other

Recommended selection for high voltage inserts for transformer protection.

1) Fuse insert should withstand transformer magnetising currents with 12xIn current for 01. sec.
2) Insert should be selective with the highest insert from the low voltage side.

Table.Technical data

Transformer
[kVA]
Transformer nominal voltage
10kV 15kV* 15kV* 20kV
Insert12kV Insert17,5kV Insert 24kV Insert 24kV
20   17.5TDMSJ6.3 24TDMSJ6.3  
30   17.5TDMSJ6.3 24TDMSJ6.3  
50   17.5TDMSJ6.3 24TDMSJ6.3  
75   17.5TDMSJ10  24TDMSJ6.3  
100 12TDLSJ16 17.5TDMSJ10 24TDMSJ10 24TDMSJ10
125 12TDLSJ16 17.5TDMSJ10 24TDMSJ10 24TDMSJ10
160 12TDLSJ16 17.5TDMSJ16 24TDMSJ16 24TDMSJ10
200 12TDLSJ20 17.5TDMSJ16 24TDMSJ16 24TDMSJ16
250 12TDLSJ25 17.5TDMSJ16 24TDMSJ16 24TDMSJ16
315 12TDLSJ31.5 17.5TDIV1SJ20 24TDIV1SJ20 24TDMSJ16
400 12TDLSJ40 17.5TDMSJ25 24TDMSJ20 24TDMSJ20
500 12TFLSJ50 17.5TDMSJ31.5 24TDMSJ25 24TDMSJ25
630 12TFLSJ63 17.5TDMSJ40 24TDMSJ31.5 24TDMSJ31.5
800 12TFLSJ80 17.5TDMSJ40 24TDMSJ40 24TDMSJ40
1000 12TFLSJ80 17.5TFMSJ50 24TFMSJ50 24TFMSJ50
1250 12TFLSJ100 17.5TFMSJ63 24TFMSJ63 24TFMSJ50
1600       24TFMSJ63
2000       24TFMSJ71

Caution:
* - Minimum acceptable fuses nominal currents for given transformers 15kV 

Table. Technical data for fuse inserts in DIN standard

Type Nominal voltage
UN
[kV]
nominal current
IN
[A]
Max turn off current
IWS
[kA]
Min turn off current
Imin
[A]
Resistance and power losses at nominal current I2t Insert length
[mm]
Insert diameter
[mm]
R
[mΩ]
P
[w]
before arc
[A2s]
max
[A2s]
7.2TDLSJ6.3 7,2 6,3 40 20 205 11 4,8*10' 6,5*102 292 50,8
7.2TDLSJ10 7,2 10 40 31 99 19 2,5*102 2,7*103 292 50,8
7.2TDLSJ16 7,2 16 40 49 64 23 5,5*102 8,2*103 292 50,8
7.2TDLSJ20 7,2 20 40 49 48 27 9,7*102 1,1*104 292 50,8
7.2TDLSJ25 7,2 25 40 80 32 28 5,7*102 8*103 292 50,8
7.2TDLSJ31.5 7,2 31,5 40 100 26 36 8,9*102 1*104 292 50,8
7.2TDLSJ40 7,2 40 40