This series of isolating switches meets the name requirements specified in GB1985-89 "AC High Voltage Isolating Switches", IEC129(1984) "AC Isolating Switches and Earthing Switches" and IEC694(1980) "Common Items for High Voltage Switchgear and Control Equipment".
Type | General type (anti-pollution type) | |
Rated Voltage (V) | 40.5 72.5 126 | |
Rated current (A) | 630 | |
1000 | ||
1250 | ||
1600 2000 | ||
Isolation switch | Rated peak withstand current (KA) | 50 |
80 | ||
Rated short-time withstand current (KA) | 20(4s) | |
31.5(4s) | ||
31.5(4s) | ||
Earthing switch | Rated peak withstand current (KA) | 50 |
80 | ||
Rated short-time withstand current (KA) | 20 (4s) | |
31.5(4s) | ||
Earthing switch | Not grounded single ground double ground |
1. Altitude: ≥2000m;
2. Ambient temperature: -30°C -40°C, in alpine regions ≥ -40°C;
3. Wind speed: ≤35m/s;
4. Earthquake intensity: ≤8°;
5. Icing thickness: ≤10mm;
6. The installation site should be free of flammable and explosive materials, chemical corrosion and severe vibration; 7. Pollution level of post insulators: ordinary type is level 0, and the anti-pollution type is level Ⅱ;
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