Loading Port:Qingdao
Payment Terms:TT OR LC
Min Order Qty:1 unit
Supply Capability:400 unit/month
Product Classification and Main Technical Specification
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 | GW7-126 | GW7-145 | GW7-170 | |
| Rated voltage kV | 126 | 145 | 170 | |
| The rated current A | 2000, 3150, 4000 | 2000, 3150, 4000, 5000 | ||
| Disconnector | Rated peak withstand current kA | 125 | 125,160 | |
| Rated short-time withstand current (RMS)kA | 50 | 50 | 50,63 | |
| Rated short circuit duration s | 3 | 3 | 3 | |
| Grounding switch | Rated peak withstand current kA | 125 | 125 | 125,160 |
| Rated short-time withstand current (RMS)kA | 50 | 50 | 50,63 | |
| Rated short circuit duration s | 3 | 3 | 3 | |
| Rated short-time power frequency withstand voltage (RMS) kV | to earth | 230 | 275 | 325 |
| across isolating point | 230+70 | 315 | 375 | |
| Rated lightning impulse withstand voltage (peak) kV | to earth | 550 | 650 | 750 |
| across isolating point | 550+100 | 750 | 860 | |
| open and close busbar for current transfer | open and close current A | 2500 | 2500 | 2500 |
| transfer voltage V | 400 | 400 | 400 | |
| open and close times | 100 | 100 | 100 | |
| open and close low current | capacitance current A | 1 | 1 | 2 |
| inductance current A | 0.5 | 0.5 | 1 | |
| Radio interference level | less than 500 μv | |||
| Mechanical life | 3000 | 3000 | 3000 | |
| rated terminal static mechanic load N | longitudinal level | 1250 | 1500 | 1500 |
| Horizontal level | 750 | 1000 | 1000 | |
| Vertical force | 100 | 1250 | 1250 | |
| rated contact area mm | Longitudinal displacement | 350 | 350 | 350 |
| horizontal displacement | 350 | 350 | 350 | |
| Vertical displacement | 300 | 300 | 300 | |
| All applied in an altitude of 2000m | ||||
| Technical Specifications | GW7-252 | GW7-363 | GW7-420 | GW7-550 | |
| Rated voltage kV | 252 | 363 | 420 | 550 | |
| The rated current A | 2000, 3150, 4000, 5000 | 2000, 3150, 4000, 5000 | 3150, 4000,5000 | ||
| Disconnector | Rated peak withstand current kA | 125, 160 | 125, 160 | 125, 160 | 125, 160 |
| Rated short-time withstand current (RMS)kA | 50, 63 | 50, 63 | 50, 63 | 50, 63 | |
| Rated short circuit duration s | 3 | 3 | 3 | 3 | |
| Grounding switch | Rated peak withstand current kA | 125, 160 | 125, 160 | 125, 160 | 125, 160 |
| Rated short-time withstand current (RMS)kA | 50, 63 | 50, 63 | 50, 63 | 50, 63 | |
| Rated short circuit duration s | 3 | 3 | 3 | 3 | |
| Rated short-time power frequency withstand voltage (RMS) kV | to earth | 460 | 510 | 520 | 740 |
| across isolating point | 460+145 | 510+210 | 610 | 740+315 | |
| Rated lightning impulse withstand voltage (peak) kV | to earth | 1050 | 1175 | 1425 | 1675 |
| across isolating point | 1050+200 | 1175+295 | 1425+240 | 1675+450 | |
| Rated operation impulse withstand voltage(peak) kV | to earth | none | 950 | 1050 | 1300 |
| across isolating point | none | 850+295 | 900+345 | 1175+450 | |
| open and close busbar for current transfer | open and close current A | 2500 | |||
| transfer voltage V | 427 | ||||
| open and close times | 100 | ||||
| open and close low current | capacitance current A | 2 | |||
| inductance current A | 1 | ||||
| Radio interference level | less than 500 μv | ||||
| Mechanical life | 3000 | ||||
| rated terminal static mechanic load N | longitudinal level | 2000 | 2500 | 4000 | 4000 |
| Horizontal level | 1500 | 2000 | 2000 | 2000 | |
| Vertical force | 1250 | 1500 | 2000 | 2000 | |
| rated contact area mm | Longitudinal displacement | 500 | 500 | 600 | 600 |
| horizontal displacement | 500 | 500 | 600 | 600 | |
| Vertical displacement | 450 | 450 | 500 | 500 | |
| All applied in an altitude of 2000m | |||||
