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GW4-126 Series Outdoor High Voltage Disconnector
The GW4-126kV series outdoor high-voltage disconnect switch is an outdoor high-voltage electrical equipment for 50Hz three-phase alternating current.
Description
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Product Description
The GW4-126kV series outdoor high-voltage disconnect switch is an outdoor high-voltage electrical equipment for 50Hz three-phase alternating current. Designed for use in three-phase electrical systems of outdoor installation of alternating current 50 Hz at power plants, substations, as well as at large industrial and mining enterprises for switching high-voltage lines without load, as well as for electrical isolation and switching on/off circuits of repaired high-voltage busbars, switches and other electrical equipment from energized high-voltage lines. It has such characteristics as safety, reliability, ease and flexibility of control. The electrical and mechanical characteristics of the product comply with the requirements of the national standard GB1985 "High-voltage disconnectors and earthing disconnectors for alternating current."
Technical standards applicable to this type of product:
◆ GB1985-2014 “High-voltage disconnectors and AC earthing disconnectors”
◆ GB/T 11022-2011 “General technical requirements for high-voltage distribution equipment and control devices”
◆ IEC129 "AC disconnectors and earthing switches"
| Model | Rated voltage, kV | Rated current, A | Thermal resistance current during short circuit, kA/4s | Dynamic resistance current during short circuit, kA | Power frequency test voltage, kV/60s | Test lightning impulse voltage, kV | ||
| Between phases / phase-ground | Open contact | Between phases / phase-ground | Open contact | |||||
| GW4 | 126 | 630 | 20/31.5 | 50/80 | 230 | 265 | 550 | 630 |
| 126 | 1250 | 31.5/40 | 80/100 | |||||
| 126 | 1600 | 31.5/40 | 80/100 | |||||
| 126 | 2000 | 40 | 100 | |||||
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