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Location: >> Products >> Electrical products >> ProductsVF (R)-12 type withdrawout vacuum load switch combined electrical apparatus (handcart)
General
VF (R)-12 [FZ (R)N withdrawout vacuum load switch and its combined electrical apparatus are independently designed, developed by this company. It is small-sized, compact structure
VF (R) are stable, long live, high numbers of rated drop-out current, strong ability of breaking and making, easy maintenance
The vacuum interrupter is insulation coated, and thus the switch is pollution free, explosion free, low noise, high insulation level, less maintenance, which is applied to the frequently operated working condition.
Unique design of the combined electrical apparatus and the three-phase fuse is installed on the top of the load switch
Load switch and combined electrical apparatus (withdrawout handcart unit), which match the VS1, VD4, ZN21, applied to KYN44, GZS1, KYN28 and other withdrawout HV cabinets
Vacuum load switch and combined electrical apparatus can be manually or electrically operated. Sequence of closing: closing spring stored-energy release (opening spring pre-stored)-closing; sequence of opening: opening spring energy release-opening
Two drop-out mode: 1. fuse impact operation: when break the load current, the relay protection action instruct the magnetic release vacuum load switch; 2. magnetic release operation: when short circuit, the mechanical system open the fuse; fuse is just as the backup short circuit protection.
The switch can be with va
Vacuum circuit breaker interrupter, rated current
Vacuum load switch-fuse combined electrical apparatus can effectively protect the transformer
technical parameters
|
Serial No |
Item |
Unit |
Load switch VF-12/T630/20 |
Combined electrical apparatus VFR-12/T125/50 |
|
|
1 |
Rated voltage |
KV |
12 |
12 |
|
|
2 |
Rated frequency |
HZ |
50 |
50 |
|
|
3 |
Rated current |
A |
630 |
125 |
|
|
4 |
Rated insulation 1min |
Power frequency withstand voltage |
KV |
Interrupter fracture 42; phase-earth, phase-earth 42 |
|
|
Lightning impulse withstand voltage |
KV |
Phase-earth, phase-phase; isolation fracture |
|||
|
5 |
Rated short circuit drop-out current |
KA |
50 |
||
|
6 |
Active load drop-out current |
A |
630 |
- |
|
|
7 |
Rated close loop drop-out current |
A |
630 |
- |
|
|
8 |
Active load low current drop-out |
A |
31.5 |
- |
|
|
9 |
Rated cable charge drop-out current |
A |
10 |
10 |
|
|
10 |
Breaking no-load transformer |
KVA |
1250 |
1250 |
|
|
11 |
Rated short circuit making current (peak) |
KA |
50 |
125 |
|
|
12 |
Rated short time withstand current |
KA |
20 |
- |
|
|
13 |
Rated short time withstand current duration |
S |
4 |
- |
|
|
14 |
Rated withstand current (peak) |
KA |
50 |
- |
|
|
15 |
Rated connection electric current |
A |
- |
3150 |
|
|
16 |
Circuit resistance |
UW |
≤100 |
≤250 |
|
|
17 |
Motor power |
W |
70 |
70 |
|
