Ningbo Tianan (Group) Co.,Ltd.
Ningbo Tianan (Group) Co.,Ltd
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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 | |