1.overview
PXGW-12 Environmentally Friendly Gas-Insulated Circuit Breaker Automation Complete Set Cabinet comes with various cabinet configurations, including circuit breaker cabinets, PT cabinets, busbar connection cabinets, section cabinets, and metering cabinets. The core components of each unit are housed within a metal enclosure filled with environmentally friendly gas (dry air). The main switch uses vacuum interruption technology, while the isolating and grounding switches employ a three-position operating mechanism. High-voltage incoming and outgoing lines are fully encapsulated with organic insulating materials, achieving a truly fully insulated state, which ensures the product is safe, environmentally friendly, and reliable.
The control unit is based on our company's independently developed, patented centralized or distributed Ring Main Unit Automation Controller(DTU).
|
Parameter Category |
Parameter Index |
|
Rated Voltage |
12 kV |
|
Rated Frequency |
50 Hz |
|
Rated Current |
630 A |
|
1-Minute Power Frequency Withstand Voltage (Phase to Ground, Phase to Phase) |
42 kV |
|
1-Minute Power Frequency Withstand Voltage (Vacuum Breaker, Isolating Switch) |
48 kV |
|
Lightning Impulse Withstand Voltage (Phase to Ground, Phase to Phase, Vacuum Breaker) |
75 kV |
|
Lightning Impulse Withstand Voltage (Vacuum Breaker, Isolating Switch) |
85 kV |
|
Thermal Stability Current (RMS) Main Circuit for 4 Seconds |
20 kA |
|
Thermal Stability Current (RMS) Grounding Switch for 4 Seconds |
|
|
Thermal Stability Current (RMS) Grounding Connection Circuit for 2 Seconds |
21.8 kA |
|
Dynamic Stability Current (Peak) Main Circuit |
50 kA |
|
Dynamic Stability Current (Peak) Grounding Switch |
|
|
Dynamic Stability Current (Peak) Grounding Connection Circuit |
54.8 kA |
|
Rated Short-Circuit Breaking Current of the Circuit Breaker |
20 kA |
|
Rated Short-Circuit Closing Current (Peak) of the Circuit Breaker |
50 kA |
|
Rated Short-Circuit Closing Current (Peak) of the Grounding Switch |
50 kA |
|
Mechanical Life of the Circuit Breaker |
10000times |
|
Mechanical Life of the Isolating Switch/Grounding Switch |
3000times |
|
Rated Supply Voltage (for Operating Mechanism and Auxiliary Circuit) |
DC48 V/DC220 V/AC220 V |
|
Rated Operating Cycle of the Circuit Breaker |
O－0.3s－CO－180s－CO |
|
Internal Arc Rating |
AFLR 25kA 1s |
|
Protection Level (Gas Tank/Shell) |
IP67/IP41 |
3.operating environment
1.Installation Location: Indoor or outdoor (in areas free from fire, explosion, severe pollution, chemical corrosion, and intense vibration);
2.Ambient Temperature: -50°C to +70°C;
3.Altitude: ≤1000 m;
4.Humidity (%): Daily average relative humidity ≤ 95%, monthly average relative humidity ≤ 90%;
5.Seismic Level: Earthquake intensity not exceeding 8 degrees.