The GFX series is a new generation SF6 gas insulated switchgear developed by our company in response to the high standardized design requirements of switchgear, based on years of R&D and fabrication of switchgear.
This product is suitable for ring network power supply or radiation power supply systems of three-phase AC 50Hz/60Hz, voltage 6-24kV. All high-voltage live parts of the product, including load switches, circuit breakers, earthing switches, primary busbars, etc., are sealed in a stainless steel tank filled with SF6 gas. With inlet and outlet lines in hermetically sealed elbow-shape cable plugs, switchgears are insensitive to aggressive environment and show superiority in aggressive ambient conditions and narrow spaces, such as urban power supply switch substations, prefabricated substations, underground substations, industrial and mining enterprises, or areas where is humid and dusty.
- 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 busbars (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 meddle voltage equipment;
- Advanced processing and testing methods are adopted to ensure the overall air tightness of the gas tank, with an annual leakage rate of 0.01%. When the gas pressure is below a certain value, VCB close will be inhibited..
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
K
T
V
No. | Item | Unit | Load switch Cubicle | Combination panel | Circuit-breaker Cubicle | ||
1 | Rated voltage | kV | 12/24 | 12/24 | 12/24 | ||
2 | Rated frequency | Hz | 50/60 | 50/60 | 50/60 | ||
3 | Rated current | A | 630 | 125 | 630 | ||
4 | Rated Insulation Level |
1min Working frequency Withstand voltage | InterPhase, Earthing | KV | 42/65 | 42/65 | 42/65 |
5 | across the isolating distance | KV | 48/79 | 48/79 | 48/79 | ||
6 | Lightning impulse withstand voltage | InterPhase, Earthing | KV | 75/125 | 75/125 | 75/125 | |
7 | across the isolating distance | KV | 85/145 | 85/145 | 85/145 | ||
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 | 31.5 | 20 | ||
12 | Protective grade(Gas tank/whole panel) |
| IP67/IP41 | IP67/IP41 | IP67/IP41 | ||
13 | Standard DIM |
| 375*750*（1600+350） | 420*750*（1600+350） | 420*750*（1600+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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