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Disconnector-(H)GW4-72.5kV
GW4 Isolation Switch 72.5 kV Isolation Switch (also known as Disconnector)
72.5KV, suitable for high voltage 50/60Hz three-phase AC transmission system.
Insulation characteristics: lightning impulse withstand voltage 185 kV (to ground), power frequency withstand voltage 100 kV (to ground), higher value of failure withstand voltage, ensuring the reliability of electrical insulation after tripping.
Description
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Product Details
GW4 Isolation Switch 72.5 kV Isolation Switch (also known as Disconnector)
72.5KV, suitable for high voltage 50/60Hz three-phase AC transmission system.
Insulation characteristics: lightning impulse withstand voltage 185 kV (to ground), power frequency withstand voltage 100 kV (to ground), higher value of failure withstand voltage, ensuring the reliability of electrical insulation after tripping.
Functional characteristics
Used for line isolation, equipment maintenance or changing the mains operation during no-load conditions, cannot interrupt load/fault current and must be used in conjunction with circuit breakers.
Additional one-way or two-way grounding switch, synchronously isolating the main circuit and the grounding circuit
Typical Application Scenarios
- Substation and power plant: Isolate equipment such as generators and transformers, and use circuit breakers to switch the operating mode of the electrical grid.
- Power distribution in industrial and mining applications: isolation and protection of high current power supply equipment in high power consumption scenarios such as metallurgy and chemical industries.
- Transmission line segmentation: 72.5 kV high voltage lines are segmented for maintenance or fault isolation, creating visible break points.
The 72.5kV GW4 isolation switch, with its high insulation strength, modular design and ability to adapt to harsh operating conditions, has become a key equipment for the safe operation and maintenance of high-voltage power systems. Selection should be based on current requirements, operating practices and contamination levels (recommended for Level II or lower environments).
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