Since 1991
FN7-12DR Model indoor AC HV Load Switch is suitable in 50Hz,rated voltage of 12Kv the three-phase AC power system
as the breaking load short-circuit current of the power and used the Closing,
until the combination of electrical short -circuit current can be breaking any current
can be used as protection purposes .
FN7-12DR Indoor High Voltage Load Break Switch
Summary
FN7-12DR Model indoor AC HV Load Switch is suitable in 50Hz,rated voltage of 12Kv the three-phase AC power system as the breaking load short-circuit current of the power and used the Closing, until the combination of electrical short -circuit current can be breaking any current can be used as protection purposes .
Specifications
| Rated voltage(KV) | 12 | ||||
| Insulation level | 1min frequency voltage(KV) | Phase to phase earth42 | Isolation fracture48 | ||
| Lightning impulse withstand voltage(KV) |
Phase to phase earth75 | Isolation fracture85 | |||
| Rated current(A) | 400 | 630 | |||
| 4S Rated thermal current(KA) | 12.5 | 20 | |||
| Rated active load breaking currentKA(Peak) | 31.5 | 50 | |||
| Rated short circuit making current(KA peak) | 31.5 | 50 | |||
| Name | Models | DS | DX | L | R | RA | F | USE | |
| Grounding switch incoming fedder side |
Grounding switch outgoing fedder side |
Interlock device |
Fuse | Impact Fuse | Electric sub- gate devices |
||||
| Load switches |
Non-impact fuse |
FN7-12 | — | — | — | — | — | — | Line load switch |
| FN7-12DSL | △ | — | △ | — | — | — | |||
| FN7-12DXL | — | △ | △ | — | — | — | |||
| FN7-12R | — | — | — | △ | — | — | Transformer Protection |
||
| FN7-12DSLR | △ | — | △ | △ | — | — | |||
| FN7-12DXLR | — | △ | — | △ | — | — | |||
| With impact fuse |
FN7-12RAF | — | — | — | — | △ | △ | Transformer Protection |
|
| FN7-12SLRAF | △ | — | △ | — | △ | △ | |||
| FN7-12XLRAF | — | △ | △ | — | △ | △ | |||
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