Eberry Electric Co., Ltd.
We are a professional manufacturer of vacuum circuit breakers. We have 15 years of experience in design and development. We have a professional team responsible for comprehensive solution.
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FKN12-12 Indoor high voltage load switch Vacuum Load Break Switch
Overview:
FN12-12D and FN12-12DR combination appliances are three-phase high-voltage switchgear with rated voltage of 12KV and rated frequency of 50Hz for splitting load current, closed-loop current, no-load transformer and cable charging current, closing short-circuit current, fuse combination The short-circuit current can be interrupted, and the load switch equipped with the grounding switch can withstand the short-circuit current. It is mainly used in the urban substation and industrial power equipment with three-phase ring network or terminal power supply. It is used for load control and short circuit protection.
The main technical parameters:
| Sr. | name | Unit | Value | ||
| FN12-12/630 | FNR12-12/100-31.5 | ||||
| 1 | Rated voltage | KV | 12 | ||
| 2 | Rated frequency | Hz | 50 | ||
| 3 | Rated current | A | 630 | 1250 | |
| 4 | Lightning impulse withstand voltage | KV | Ground and phase 76, isolation fracture 85 | ||
| 5 | 1min power frequency withstand voltage | KV | Ground and phase 42, isolation fracture 48 | ||
| 6 | Rated thermal stable current | KA | 20(4s) | ||
| 7 | Rated dynamic current | KA | 50 | ||
| 8 | Rated short circuit closing current (peak) | KA | 50 | 50 | |
| 9 | Rated short-circuit breaking current (expected value) | KA | 31.5 | ||
| 10 | Rated transfer current | KA | 1.5 | ||
| 11 | Breaking the capacity of the no-load transformer | KVA | 1250 | ||
| 12 | Rated cable charging current | A | 10 | ||
| 13 | Mechanical life | times | 4000 | ||
| 14 | The fuse triggers the load switch opening time | S | ＜0.06 | ||
| 15 | Grounding switch thermal stability current | KA | 20(2s) | ||
| 16 | Grounding switch dynamic steady current (peak) | KA | 50 | ||
| 17 | Control loop supply voltage | AC DC 110,220 | |||
