Description
The HXGN-12 SF6 insulated metal-enclosed switchgear is used for the three-phase AC power distribution unit with the rated voltage of 12KV and the rated frequency of 50Hz. It is often installed in the end of the industrial and civil ring networks, especially suitable for receiving and distributing power in the small secondary power distribution station, switching station, industrial and mining enterprises, urban residential areas, airports, railways, tunnels, high-rise buildings.
| Item | Data | ||||
| Wire incoming and outgoing units | Combined electrical unit | Contact unit | Metering unit | ||
| Rated voltage (KV) | 12 | ||||
| Rated frequency (Hz) | 50 | ||||
| Rated current of main bus (A) | 630 | ||||
| Rated current (A) | 630 | 125 | 630 | ||
| Rated short circuit breaking current (KA) | 31.5 | ||||
| Rated transfer current (A) | 1700 | ||||
| Thermal stability current (valid value) (KA) | Main loop, 4s | 20 | 20 | ||
| Ground connection loop, 2s | 17.4 | 17.4 | |||
| Dynamic stability current (peak) (KA) | Main loop | 50 | 50 | ||
| Ground connection loop | 43.5 | 43.5 | |||
| Rated short circuit making current (peak) (KA) | Load switch | 50 | 50 | ||
| Grounding switch | |||||
| 1min power frequency withstand voltage | Phase to ground, phase to phase | 42 | |||
| Between isolated fractures | 48 | ||||
| Lightning impulse withstand voltage (KV) | Phase to ground, phase to phase | 75 | |||
| Between isolated fractures | 85 | ||||
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