Indoor 35kV RMU / Ring Main Unit / SF6 Gas insulated Switchgear GIS
NINGBO TIANAN (GROUP) CO., LTD.
Overview:
The indoor HV SF6 RMU are used in high voltage distribution networks. They offer a sealed stainless steel tank which contains all the live components and switching functions. The transformer is protected either by a switch fuse combination or a vacuum circuit breaker.
Operating Conditions:
Description | Requirement | |
1 | Altitude(installed indoors) | ≤2000m |
2 | Ambient air temperature | -5℃ ~ +40℃ |
3 | Monthly average relative humidity | ≤90%(+25℃) |
4 | Anti-seismic intensity | ≤8° |
5 | Maximum daily temperature difference | < 25℃ |
Parameter:
Rated voltage | kV | 33~40.5KV | |
Rated short time power frequency withstand voltage(1min) | kV | 95 | |
Rated lighting impulse withstand voltage | kV | 185 | |
Rated current(LBS) | A | 630 | |
Rated short circuit breaking current | kA | 50 | |
Rated peak value withstand current(LBS) | kA | 50 |