++++General:
It is used in three-phase power distribuiton of AC 50Hz rated voltage 12kv and rated current 630A Esp For power ring network in city net work construction improvement high-rise buildings and public facilities as an ideal product to protect package substation and transformer It has the featrres of advanced design simple operation impact structruee smatr appearancelight weight complete function fast on-and off speed and high reliability.
++++Technical parameter: |
Number | Name | Unit | FN18-12D/630 | FN18-12DR/100-31.5 | 1 | Rated voltage | KV | 12 | 2 | Rated frequency | Hz | 50 | 3 | Rated current | A | 630 | 100 | 4 | 1min power frequency withstand volage | kv | To ground and interphase42 isolation break48 | Lighting impulse resisting voltage | To ground and interphase75 isolation break85 | 5 | Distance between phases | mm | 170 | 6 | Rated machine stabling current | KA | 50 |
| 7 | Rated heat-stabling current | KA/S | 20/2 |
| 8 | Rated cble chrgig current | A | 10 | 9 | Rated transfer current |
| 1600 | 10 | Switch-off no-load transformer capacity | KVA | 1250 | 11 | Rated short-circuit switch-off current(fuse value) | KA |
| 31.5-50 | 12 | Rated short-circuit controlly current(peak) | 50 | 13 | Rated power load switch-off current | 630 |
| 14 | Earth switch rated heat-stabling current | KA/S | 16/2 | 15 | Breaking times of rated power load current |
| 100 | 16 | Mechanical life | 2000 |
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