China 145kv Wall Mounted Disconnector

1), product classification

Voltage level: 126kV, 145kV, 170kV, 252kV, 363kV, 420kV, 550kV.

Current level: 2000A, 3150A, 4000A, 5000A

Auxiliary earthing switch type: None earthing switch, left earthing switch, right earthing switch, double earthing switch.

2), Main Technical Specifications

Technical Specifications GW7-126GW7-145GW7-170Rated voltage kV 126145170The rated current A 2000, 3150, 40002000, 3150, 4000, 5000DisconnectorRated peak withstand current kA125125,160Rated short-time withstand current (RMS)kA505050,63Rated short circuit duration s333Grounding switchRated peak withstand current kA125125125,160Rated short-time withstand current (RMS)kA505050,63Rated short circuit duration s333Rated short-time power frequency withstand voltage (RMS) kVto earth230275325across isolating point230+70315375Rated lightning impulse withstand voltage (peak) kVto earth550650750across isolating point550+100750860open and close busbar for current transferopen and close current A250025002500transfer voltage V400400400open and close times100100100open and close low currentcapacitance current A112inductance current A 0.50.51Radio interference level less than 500 μvMechanical life 300030003000rated terminal static mechanic load Nlongitudinal level125015001500Horizontal level75010001000Vertical force10012501250rated contact area mmLongitudinal displacement350350350horizontal displacement350350350Vertical displacement300300300All applied in an altitude of 2000m

Technical Specifications GW7-252GW7-363GW7-420GW7-550Rated voltage kV 252363420550The rated current A 2000, 3150, 4000, 50002000, 3150, 4000, 50003150, 4000,5000DisconnectorRated peak withstand current kA125, 160125, 160125, 160125, 160Rated short-time withstand current (RMS)kA50, 6350, 6350, 6350, 63Rated short circuit duration s3333Grounding switchRated peak withstand current kA125, 160125, 160125, 160125, 160Rated short-time withstand current (RMS)kA50, 6350, 6350, 6350, 63Rated short circuit duration s3333Rated short-time power frequency withstand voltage (RMS) kVto earth460510520740across isolating point460+145510+210610740+315Rated lightning impulse withstand voltage (peak) kVto earth1050117514251675across isolating point1050+2001175+2951425+2401675+450Rated operation impulse withstand voltage(peak) kVto earthnone95010501300across isolating pointnone850+295900+3451175+450open and close busbar for current transferopen and close current A2500transfer voltage V427open and close times100open and close low currentcapacitance current A2inductance current A 1Radio interference level less than 500 μvMechanical life 3000rated terminal static mechanic load Nlongitudinal level2000250040004000Horizontal level1500200020002000Vertical force1250150020002000rated contact area mmLongitudinal displacement500500600600horizontal displacement500500600600Vertical displacement450450500500All applied in an altitude of 2000m