The product is a full range fuse, available for high-voltage indoor electric system, with rated voltage of 15.5KV, rated current up to 63A, 50Hz a.c.. it is used for protecting from overload and short-circuit for power transformer.
◆Applying For appropriate Fuses
|
Transtormer capacity KVA |
Primary voltage of the transformer ( phase to phase ) |
|
|
Rated Current of fuse-link |
||
|
12KV |
15.5KV |
|
|
200 |
20 |
20 |
|
225 |
25 |
20 |
|
300 |
31.5 |
25 |
|
500 |
50 |
40 |
|
750 |
63 |
50 |
◆Order number
|
Rated Current A |
Fuse-link Order Number |
Fuse-base Order Number |
|
20 |
ZGR2-20 |
ZGR2-D |
|
25 |
ZGR2-25 |
|
|
31.5 |
ZGR2-31.5 |
|
|
40 |
ZGR2-40 |
|
|
50 |
ZGR2-50 |
|
|
63 |
ZGR2-63 |
◆Basic parameters
|
Rated Voltage |
MAX.Voltage (KV) |
|
15.5 |
17.2 |
|
Rate current of the fuse (A) |
63 |
|
Rate current of the fuse-link (A) |
20、25、31.5、40、50、63、80*、100* |
|
Rate breaking capacity (KA) |
50 |
|
Operating condition |
In the air and oil of transtormer |
|
Lightning impulse withstand voltage score KV |
|
|
75 to ground |
Fracture 110 |
Note : * parrallel fuse application ( order two fuses )
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