Customization: | Available |
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Type: | High Voltage |
Structure: | Three-column Disconnector |
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Overview: FZRN25-12D FZN25-12D FZN25-12 Indoor high voltage vacuum load switch & FZRN25-12D FZN25-12D FZN25-12-fuse combination of three-phase AC 50HZ, 12KV power distribution system control and protection devices. Products are oil-free, non-toxic, non-flammable and explosive hazards, widely used in miners and urban buildings and other places. The latter of the transformer and other electrical equipment protection than the circuit breaker more reliable, especially for ring network, dual-radiation power supply unit and box-type substation.
Technical data
# | It | Unit | Date | |
LXFZN25-12(D)/2000-31.5 vacuum load switch +fuse | ||||
1 | Rated voltage | KV | 12 | |
2 | Rated current | A | 630/1250 | |
3 | Rated frequency | HZ | 40/50 | |
4 | 1min power frequency withstand voltage | ground& phase | KV | 42 |
isolation fracture | KV | 48 | ||
vacuum interrupter | KV | 42 | ||
5 | Lightning impulse withstand voltage | ground& phase | KV | 75 |
isolation fracture | KV | 85 | ||
vacuum interrupter | KV | 75 | ||
6 | Breaking the no-load transformer | KVA | 2500 | |
7 | Rated cable charging current | A | 10 | |
8 | Rated short circuit breaking current (expected)) | KA | 31.5 | |
9 | Rated breaking transfer current | A | 3150 | |
10 | Interphase center distance | mm | 210+/-2 | |
11 | Vacuum interrupter contact open distance | mm | 8+/-1 | |
12 | Synchronicity | ms | ≤3 | |
13 | Average closing speed | m/s | 0.6+/-0.2 | |
14 | Average opening speed | m/s | 1.0+/-0.2 | |
15 | Mechanical life | Times | 10000 |