Protection 3 Phase Isolator 15Kv Disconnect Switch
Protection 3 Phase Isolator 15Kv Disconnect Switch
| Technical Specifications | GW4-40.5 | GW4-72.5 | GW4-126 | |
| Rated voltage kV | 40.5 | 72.5 | 126 | |
| The rated current A | 1250, 2000 | |||
| Disconnector | Rated peak withstand current kA | 100 | ||
| Rated short-time withstand current (RMS)kA | 40 | |||
| Rated short circuit duration s | 4 | |||
| Grounding switch | Rated peak withstand current kA | 100 | ||
| Rated short-time withstand current (RMS)kA | 40 | |||
| Rated short circuit duration s | 4 | |||
| Rated short-time power frequency withstand voltage (RMS) kV | to earth | 95 | 160 | 230 |
| across isolating point | 118 | 200 | 230+70 | |
| Rated lightning impulse withstand voltage (peak) kV | to earth | 185 | 350 | 550 |
| across isolating point | 215 | 410 | 550+100 | |
| minimum clearance in 1 min power frequency withstand voltage when ground blade closing to live part of disconnector | 53 | 94 | 164 | |
| switching ability of earthing switch inductance current | electromagnetic inductance current (current/voltage) | 50/0.5(A type), 100/6(B type) | ||
| Static inductance current (current/voltage) | 0.4/3(A type), 5/6(B type) | |||
| switching times | 10 | 10 | 10 | |
| rated terminal static mechanic load N | longitudinal level | 1000 | 1000 | 1000, 1250 |
| Horizontal level | 750 | 750 | 750 | |
| Vertical force | 1000 | 1000 | 1000 | |
| switching capacitance current A | 2 | 2 | 2 | |
| switching inductance current A | 1 | 1 | 1 | |
| switching busbar for current transfer A (busbar transfer voltage 100V) | 400V, 2500A, 100 times | |||
| Radio interference level | less than 500 μV | |||
| Mechanical life | 3000 | 3000 | 3000 | |
| single pole weight (kg) | 240 | 300 | 350 | |
| note: All applied in an altitude of 2000m | ||||
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