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GW4-72.5 series outdoor high voltage disconnector switch is designed to open and close high voltage circuits in rated voltage 72.5kV, AC 50/60Hz systems. The anti-pollution model is particularly suited for high-pollution environments. It strictly complies with the IEC62271-102 standards for High voltage AC disconnector switches.
| Normal Operation Conditions | |
|---|---|
| Altitude | ≤1000m |
| Ambient temperature | -10°C ~ +40°C (can reach as low as -25°C during transportation and storage) |
| Relative humidity | Daily average < 95%; monthly average < 90% |
| Seismic scale of earthquake | < 8 |
| No | Items | Unit | Technical Parameter |
|---|---|---|---|
| 1 | Rated Voltage | kV | 72.5 / 126 / 525 |
| 2 | Nominal system voltage | kV | 66 / 110 / 220 |
| 3 | Rated current | A | 3150 / 4000 |
| 4 | Rated Short Time withstand current and Time | kA/s | 25~50/4 |
| 5 | Rated Peak withstand current | kA | 63~125 |
| 6 | 1min power frequency withstand voltage (effective value) | kV |
To earth: 140 / 230 / 460 To phase: 140 / 2300 / 460 Across Isolating DS: 180 / 230+70 / 460+145 |
| 7 | Lightning Impulse withstand voltage (peak value) | kV |
To earth: 325 / 550 / 1050 To phase: 325 / 500 / 1050 Across Isolating DS: 385 / 550+100 / 1050+150 |
| 8 | Rated mechanical terminal load | N |
Level of lateral load: 750 / 1500 / 2000 Level of vertical load: 500 / 1000 / 1500 Vertical: 750 / 1000 / 1250 |
| 9 | The min distance of insulation against ground | mm | 600 / 1000 / 2000 |
| 10 | Max Man Operative Moment | N.m | 200 |
| 11 | Motor Drive operating mechanism control voltage | V | AC220,380; DC110,220 |
| 12 | Motor Drive operating mechanism motor voltage | V | AC220,380; DC110,220 |
