DYGIS-12 Series SF6 Gas Insulated Switchgear, EFX-12 safe gas Insulated Switchgear, have larger rated current than the 12 kV Ring Main Unit. Comparing with air insulated switchgear, they are much smaller in size and are almost free of maintenance during their life time.
- Customized design solutions conform to high standards
- Adopting a hermetically sealed and insulated design, without any live parts exposed, it can operate for a long time in aggressive ambient conditions;
- A standardized and modular design structure facilitates ring loop expansion, unit swapping, and scheme changes;
- Compact in size, providing following typical panels: VCB panel, Load switch panel, Rising Panel, Communication panel, PT panel, Metering panel;
- By using plug-in expansion busbar (top expansion or side expansion), free combination can be achieved with full modularity;
- Capable of achieving intelligent distribution;
- A highly reliable operating mechanism fully meets the required inter lock criteria for middle voltage equipment;
- Advanced processing and testing methods are adopted to ensure the overall airtightness of the gas tank, with an annual leakage rate of 0.01%. When the gas pressure is lower than the require one, VCB is locked and is unable to operate.
Altitude
≤ 2000m (customized products of an available altitude≤ 5000m )
Ambient temperature
-40℃ ～ +55℃
Ambient humidity
The average relative humidity within 24 hours shall not exceed 95%.
Installation environment
There are neither explosive nor corrosive gases in the surrounding air. No severe vibration and impact in site. The pollution level does not exceed pollution degree 3.
Seismic Intensity
not more than 9 degree.
Special condition
support customized solutions
No. | Item | Unit | VCB Unit | ||
1 | Rated voltage | kV | 12 | ||
2 | Rated frequency | Hz | 50/60 | ||
3 | Rated current | A | 630/1250/2000/2500/3150 | ||
4 | Rated Insulation Level | 1 min Working frequency Withstand voltage | InterPhase, Phase-Earthing | KV | 42 |
5 | across the isolating distance | KV | 48 | ||
6 | Lightning impulse withstand voltage | InterPhase, Phase-Earthing | KV | 75 | |
7 | across the isolating distance | KV | 85 | ||
8 | Rated short-term withstand current | kA/s | 31.5KA/4S | ||
9 | Rated Peek withstand current | kA | 80 | ||
10 | Rated Peek withstand current | kA | 80 | ||
11 | Rated short-curcuit close-open current | kA | 31.5 | ||
12 | Protective grade(Gas tank/whole panel) |
| IP67/IP41 | ||
13 | Standard Size W*D*H |
| 600*1200*2300 | ||
