40.5kv Outdoor High Voltage Disconnecting Switch for Transformer

GW4 series Outdoor High Voltage disconnectors are 3 phase AC 50Hz high voltage switchgears. They are used in no-load condition to switch off the electric circuit and isolate electrical equipment, such as high voltage bus, circuit breaker etc, and high voltage line up to 252kV power system. The disconnecting switch can be divided into: No grounding, Single grounding and Double Grounding, and mechanical interlock is set between the main blade and earthing switch.
This product is double pole structure, mainly consisting of frame, porcelains and conductive parts. Two porcelain poles of each phase are mounted respectively on bearing holders of both ends of the frame, and connected by cross links for horizontal rotation. Each of the conductive blade is divided into two parts fixed on the two supporting porcelains, and the contact part is right in the middle. It has pollution- proof type and plateau type.Environment condition
- Ambient temperature: max +40°C min -35°C
- Altitude: ≤3000m
- Wind pressure: ≤700Pa (equals to wind speed 34m/s)
- Air contamination degree: IV degree
- Earthquake intensity: ≤8 degree
- No corrosive or flammable gasTechnical Data1Rated Voltage (kV)40.512625221min power frequency withstand voltage
(Effective value) kVTo Ground95230460Between Fracture115245460+1453Lightning Impulse withstand voltage
(Peak value) kVTo Ground1855501050Between Fracture2156301050+2004Mechanical life (Times)20005Rated Current (A)4006301000125016002000315040006Rated short time withstand Current(kA)202031.531.5404050507Rated withstand current (Peak value) kA405080801001001251258Rated connect machine load (N)Horizontal vertical75010001000Horizontal transverse500750750Vertical force750100010009Creepage distance (mm)1013-22561813-22503150-390610Manual operating mechanismNo groundingCS11(F)Single groundingCS8-6D(F)Double groundingMain knife CS14G(F); Earth knife CS11(F)Control loop voltage (V)AC220, DC110, DC22011Motor operating mechanismModelCJ6Motor voltage (V)AC220, DC380, DC220Control loop voltage (V)AC220, DC380, DC220Switching time (s)6±1
Outline Dimension
1. base 2. post insulator 3. Terminal
4. Static conducting tube 5. Waterproof cover 6. Dynamic conducting tube