FN7 series Load break switch, generally comes with the spring mechanism for switching ON & OFF the supply, however, option with vacuum circuit breaker is also available. Of course, option with Vacuum circuit breaker is costlier. Choice between these two totally depends on the customer. Load break switch with vacuum circuit breaker is more reliable option.
Category: Switchgear & High Voltage Products
Brand: JGGY Electric
Model: FN7-12D
Power: 12KV/ 630A
FOB Port: Ningbo/Shanghai
Terms of Pyament: Western Union,T/T,Paypal
FN7-12 is used in triphase AC power network of AC 50Hz, rated voltage 12KV for breaking load current and controlling short-circuit current.
FN7(C)-12 type H.V. load switch and fuse box is based on the FN7-12 series H.V. load switch with operating mechanism, making the installation more simpler. It meets orders needs.
Normal service condition
1. The ambient air temperature: MAX.: +40°C, Min.: -10°C.
2. The altitude does not exceed 1000m.
3. The relatire humidity of air daily average ≤90%, monthly average ≤ 95%.
4. The ambient air should not be obviously polluted by corrosivity or the flammability gas and steam. etc.
5. The working situation without frequent violent.
Specification
Model | FN7-12 | FN7-24 | |
Rated Voltage | 12KV | 24KV | |
Rated Frequency | 50/60Hz | 50/60Hz | |
Rated Current | 630A | 630A | |
Rated Short Circuit Closing Current | 50KA | 50KA | |
Rated Peak Withstand Current (Dynamic Steady Current) | 50KA | 50KA | |
Rated Short-Time Withstand Current(Thermally Stable Current) | 1s | 31.5KA | 25KA |
2s | 20KA | 25KA | |
3s | 18KA | 16KA | |
Max. breaking capcity in co-operation with fuse | 1600A | 900A | |
Max.fuse current | 200A | 200A | |
1 min Power Frequency Withstand Voltage(Effective Value)Ground and Phase | to earth and between poles | 42KV | 65KV |
across isolating distance | 48KV | 79KV | |
Lightning Impulse Withstand Voltage(Peak) 1.2/50 μs | to earth and between poles | 75KV | 125KV |
across isolating distance | 85KV | 145KV | |
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