6-10kV Ring Main Unit, HXGN口- 12
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6-10kV ring main unit is an electrical power distribution system suitable for indoor installation and is designed to operate in three phase AC 50Hz ring main and terminal power distribution networks. It is applicable to receive and distribute electricity in mines, residential areas, high-rise buildings, schools, and other areas where power distribution is required.
Environmental Conditions
- Altitude: lower than 1000 m;
- Ambient temperature: up to 40°C, greater than -25°C;
- Relative humidity: daily average ≤ 95%, monthly average ≤ 90% ( 25°C);
- Areas without risks of fire, explosion, pollution, chemical corrosion and severe vibration;
Technical Parameters
| Item | Unit | Parameter | |
| Rated voltage／Maximum working voltage | KV | 10/ 12 | |
| Rated current | A | 630 | |
| Busbar current | Incoming cable | A | 630 |
| Outgoing cable | 125 | ||
| Rated short time withstand current | KA | 20 | |
| Rated peak withstand current | KA | 50 | |
| Rated closed-loop breaking current | KA | 50 | |
| Rated mainly active load-breaking current | A | 630 | |
| Rated cable-charging current | KA | 20 | |
| Power frequency withstand voltage (1 min) | KV | 42 | |
| Rated lightening impulse withstand voltage | KV | 75 | |
| Mechanical endurance | Vacuum load break switch | times | 10000 |
| Dimension (W×D×H) | mm | 850×900×2000 | |
| Weight | kg | 200 ~ 300kg | |
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