DSGR6 Series is hermetically sealed, fully-insulated, expandable, safe, reliable ring main unit switchgear. It is mainly used in the secondary power distribution system, and provide more reliable electrical equipment for public electrical grid system.
DSGR6 includes a sealed stainless steel tank filled with low pressure safe gas, which integrates all live parts and switch functions inside and avoid the impact of external environment on the primary high-voltage circuit, ultimately achieving various usage requirements, reliability, safety, and maintenance-free and so on.
DSGR6 is mainly applied in medium and low voltage distribution substations, box type substations, high-rise building switchboard rooms, industrial distribution, outdoor distribution substations, etc.
- Customized design solutions conform to high standards
- Using safe dry air as the main insulating medium conforms to the environmental R&D direction of carbon dioxide peaking and carbon neutrality in power equipment;
- Adopting a hermetically sealed and insulated design, without any live parts exposed, it can operate for a long time in aggressive ambient conditions;
- The gas tank adopts a zero gauge pressure design, with an annual leakage rate of ≤ 1 ‰, which can operate safely and continuously under zero gauge pressure and meet all relevant test standards;
- A standardized and modular design structure facilitates ring loop expansion, unit swapping, and scheme changes;
- The positions of the isolation switch are visible for all phases, by directly showing the distances between the contacts;
- 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 busbars (top expansion or side expansion), free combination can be achieved with full modularity;
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 conditions:
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
KPT unit
V unit
No. | Item | UNIT | K Load switch Cubicle | V Circuit-breaker Cubicle | ||
1 | Rated voltage | kV | 12 | 12 | ||
2 | Rated frequency | Hz | 50/60 | 50/60 | ||
3 | Rated current | A | 630 | 630 | ||
4 | Rated Insulation Level | 1 min Working frequency Withstand voltage | InterPhase, Phase-Earthing | KV | 42 | 42 |
5 | across the isolating distance | KV | 48 | 48 | ||
6 | Lightning impulse withstand voltage | InterPhase, Phase-Earthing | KV | 75 | 75 | |
7 | across the isolating distance | KV | 85 | 85 | ||
8 | Rated short-term withstand current | kA/s | 20KA/4S | 20KA/4S | ||
9 | Rated Peek withstand current | kA | 50 | 50 | ||
10 | Rated shortcurcuit close-open current | kA | 50 | 50 | ||
11 | Rated short-curcuit close-open current | kA | 20 | 20 | ||
12 | Protective grade(Gas tank/whole panel) |
| IP67/IP41 | IP67/IP41 | ||
13 | Standard Size |
| 600*850*（1650+350） | 420*850*（1650+350） | ||
The SFX series is a ring main unit switchgear that uses epoxy resin as the main insulation medium. It encapsulates the main electrical circuit, such as the vacuum arc extinguishing chamber and it
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