HXGN15-12 Fixed Type Metal-enclosed Ring Main Unit
HXGN15-12 is an indoor AC metal-enclosed ring main unit (RMU), suitable for 12kV distribution networks. It adopts SF6 load break switch or vacuum circuit breaker as the main switch, featuring compact structure, reliable performance, and flexible operation. It is widely applied in urban power distribution, industrial enterprises, and residential areas.
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HXGN15-12 Fixed Type Metal-enclosed Ring Main Unit.pdf Overview
HXGN15-12 switchgear is suitable for power systems with an AC frequency of 50Hz and a voltage of 12kV. It is widely used in industrial and residential cable ring networks and power supply terminals.
It is particularly suitable for the following locations: small secondary substations, switch stations, urban residential area distribution, industrial and mining enterprises, shopping malls, airports, subways, wind power plants, hospitals, stadiums, and railways.
Operating Conditions
1. Ambient temperature: -35℃ ~+45℃;
2. Altitude: 1000m;
3. Relative humidity: daily average 95%, monthly average 90%;
4. Seismic resistance: 8 magnitude.
5. Occasions without flammable and explosive matter, without corrosive chemical and frequent severe vibration, without strong shake.
Model and meaning
Technical Specification
| Item | Unit | Parameter |
| Rated voltage | kV | 12 |
| Rated frequency | Hz | 50 |
| Main busbar rated current | A | 630/125 |
| Main loop, earthing loop rated short time withstand current | kA/s | 20/3 |
| Main loop, earthing loop rated peak withstand current | kA | 50 |
| Main loop, earthing loop rated short circuit making current | kA | 50 |
| Load break switch full capacity breaking time | Times | 100 |
| Fuse breaking current | kA | 31.5 |
| Rated loop breaking current | A | 630 |
| Rated transfer current | A | 870 |
| Mechanlcal life | Times | 2000 |
| 1min P.F. Withstand (virtral value), phase to phase, earth / across open contacts | kV | 42/48 |
| Lightning impulse withstand voltage (peak) phase to phase, earth / across open contacts | kV | 75/85 |
| Secondary loop 1min P.F. Withstand | kV | 2 |
| Protection degree | IP3X |
External Dimensions
