The MISELA / NILELA series gas–insulated switchgear (C–GIS) represents the latest generation of power distribution technology, combining solid and gas insulation, vacuum interruption, modular plug–in design, optimized heat dissipation, and helium leak detection. Featuring high reliability, compact and maintenance–free design, the system adopts solid–sealed poles and a modular structure to achieve a 30–year maintenance–free lifecycle and an ultra–low gas leakage rate (≤0.05%) . It is ideally suited for intelligent substation applications.
MISELA/NISELA series Gas Insulated Switchgear (C-GIS)
Main technical parameters
| Rated volage | kV | 12 | 12 | 12 | 12 | 12 | 12 | |
|---|---|---|---|---|---|---|---|---|
| Rated current | A | 1250 / 2500 / 3150 / 4000 | 1250 / 2500 / 3150 / 4000 | 1250 / 2500 / 3150 / 4000 | 1250 / 2500 / 3150 / 4000 | 1250 / 2500 / 3150 / 4000 | 1250 / 2500 / 3150 / 4000 | |
| Rated frequency | Hz | 50 / 60 | 50 / 60 | 50 / 60 | 50 / 60 | 50 / 60 | 50 / 60 | |
| Rated power frequency withstand voltage (50 / 60 hz 1min) | General | kV | 42 | 42 | 42 | 42 | 42 | 42 |
| Isolating gap | 48 | 48 | 48 | 48 | 48 | 48 | ||
| Rated lightning impulse withstand voltage (1.2 / 50 μs impulse) | General | kV | 75 | 75 | 75 | 75 | 75 | 75 |
| Isolating gap | 85 | 85 | 85 | 85 | 85 | 85 | ||
| Rated Short–time Withstand Current | kA | 1250A: 25 / 31.5 2500A: 31.5 3150A: 40 4000A: 40 | 1250A: 25 / 31.5 2500A: 31.5 3150A: 40 4000A: 40 | 1250A: 25 / 31.5 2500A: 31.5 3150A: 40 4000A: 40 | 1250A: 25 / 31.5 2500A: 31.5 3150A: 40 4000A: 40 | 1250A: 25 / 31.5 2500A: 31.5 3150A: 40 4000A: 40 | 1250A: 25 / 31.5 2500A: 31.5 3150A: 40 4000A: 40 |
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| Rated Duration of Short–circuit | s | 4 | 4 | 4 | 4 | 4 | 4 | |
| Rated Peak Withstand Current | kA | 1250A: 25 / 31.5 2500A: 31.5 3150A: 40 4000A: 40 | 1250A: 25 / 31.5 2500A: 31.5 3150A: 40 4000A: 40 | 1250A: 25 / 31.5 2500A: 31.5 3150A: 40 4000A: 40 | 1250A: 25 / 31.5 2500A: 31.5 3150A: 40 4000A: 40 | 1250A: 25 / 31.5 2500A: 31.5 3150A: 40 4000A: 40 | 1250A: 25 / 31.5 2500A: 31.5 3150A: 40 4000A: 40 |
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| Rated Short–circuit Breaking Current | kA | 1250A: 25 / 31.5 2500A: 31.5 3150A: 40 4000A: 40 | 1250A: 25 / 31.5 2500A: 31.5 3150A: 40 4000A: 40 | 1250A: 25 / 31.5 2500A: 31.5 3150A: 40 4000A: 40 | 1250A: 25 / 31.5 2500A: 31.5 3150A: 40 4000A: 40 | 1250A: 25 / 31.5 2500A: 31.5 3150A: 40 4000A: 40 | 1250A: 25 / 31.5 2500A: 31.5 3150A: 40 4000A: 40 |
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| Rated Short–circuit Making Current | kA | 1250A: 25 / 31.5 2500A: 31.5 3150A: 40 4000A: 40 | 1250A: 25 / 31.5 2500A: 31.5 3150A: 40 4000A: 40 | 1250A: 25 / 31.5 2500A: 31.5 3150A: 40 4000A: 40 | 1250A: 25 / 31.5 2500A: 31.5 3150A: 40 4000A: 40 | 1250A: 25 / 31.5 2500A: 31.5 3150A: 40 4000A: 40 | 1250A: 25 / 31.5 2500A: 31.5 3150A: 40 4000A: 40 |
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