FKN12-12D series indoor compressed load switch-fuse combination electrical appliances
FKN12-12D compressed load switch, FKRN12A-12D series compressed load switch-fuse combination electrical appliances, suitable for 12kV and below three-phase distribution system, as transformers, cables, overhead lines and other power equipment control and protection, especially suitable for urban grid, rural power grid terminal substation and box-type substation. And it is suitable for the control and protection of ring network and double radiation power supply unit. FKN12-12D series compressor load switch can split load current and overload current. FKRN12-12D series compressed load switch-fuse combination can split load current, overload current, and short circuit current of breaking line.
It is suitable for the control and protection of power equipment such as variable instrument cables and overhead lines in three-phase distribution systems of 12KV and below;
It is especially suitable for terminal substations and box-type substations of urban and rural power grids.
| serial number | project | unit | FKN12-12D/630-20 | FKN12-12R.D/125-31.5 |
| 1 | Rated voltage | KV | 12 | |
| 2 | Rated frequency | HZ | 50 | |
| 3 | Current rating | A | 630 | 125 |
| 4 | Withstand voltage for lightning impulses | KV |
75 to the ground and phase, 85 for isolation |
|
| 5 | 1min power frequency withstand voltage | KV | Ground and phase 42. Isolation 48 | |
| 6 | Rated thermal stabilization current | KA | 20(4s) | |
| 7 | Rated dynamic and stable current | KA | 50 | |
| 8 | Rated closing current (peak) | KA | 50 | |
| 9 | Rated short-circuit interrupting current | KA | 20 | 31.5 |
| 10 | Rated transfer current | KA | 1.5 | |
| 11 | Maximum Breaking Current (Reference Value) | KA | 1.8 | |
| 12 | Interrupt no-load transformer capacity | Kva | 1250 | |
| 13 | Rated charging current at the power end | A | 10 | |
| 14 | Rated number of active negative interception current interruptions | times | >100 | |
| 15 | The number of times the impactor triggers a negative interception current break | S | >0.06 | |
| 16 | Grounding switch thermally stable current | KA | 20(2s) | |
| 17 | Thermal Stabilization Current of Grounding Switch (Peak) | KA | 50 | 50 |
| 18 | The motor operates the power supply voltage | V | AC/DC 220、110 | |
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Tel：+86 15538537280
Email：lycnelectric@163.com
Add：No. 9 Duyu Street, Luolong District, Luoyang City, Henan Province
