Lugao's GW4 Series disconnectors are easy to operate, install, and maintain. They are used to connect or disconnect high-voltage circuits under load. They can also be used in scenarios such as isolating incoming and outgoing lines at substations. Lugao has the ability to mass-produce them quickly to meet customer needs.
Lugao's GW4 Series 110kV/150kV Outdoor High Voltage Electric Disconnector Switch features a two-column horizontal rotary structure, enabling opening and closing operations through horizontal rotation. Operators can easily master the switch without complex procedures. Available with either electric or manual operation, it comes in three different configurations: non-grounded, single-grounded, and double-grounded. It can be integrated with a static-contact grounding switch for enhanced safety. It is ideal for outdoor use and can operate even in inclement weather. Braided copper wire connects the terminals to the aluminum alloy components, providing excellent oxidation resistance.
The GW4 Series is available in a variety of voltages. Please contact Lugao for the appropriate configuration for your specific application.
1. Ambient temperature: -30°C-+40°C;
2. Altitude: no more than 2000m (products with special requirements can be provided);
3. Wind speed: no more than 34m/s;
4. The installation site should be free of flammable substances, explosion hazards, chemical corrosion and severe vibration;
5. The pollution level of the pillar insulator: the common type is level 0, and the anti-pollution type is level II.
Project |
Description |
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Rated Voltage |
145kV |
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Rated Current |
2000A |
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Rated Peak Withstand Current |
100kA |
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3s Rated Short-time Withstand Current Effective Value |
40kA |
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Rated Frequency |
50Hz |
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Terminal Rated Tensile Force |
Longitudinal |
1000N |
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Horizontal |
750N |
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Vertical |
1000N |
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Rated Insulation Level |
Rated Short-time Power Frequency Withstand Voltage Effective Value |
To Ground |
275kV |
Across the Break |
315kV |
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Lightning Impulse Withstand Voltage Peak Value |
To Ground |
650kV |
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Across the Break |
750kV |
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Support Insulator Creepage Ratio |
III |
25mm/kV |
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IV |
31mm/kV |
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Support Insulator Anti-bending Breaking Load |
6000N |
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Mechanical Life |
3000Times |
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Single Hit Weight |
300kg |
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Opening and Closing Switching Current |
1600 |
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Ground Switch Inductive Current Switching Capability Test |
Electromagnetic Compatibility |
Rated Inductive Current:80A |
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Rated Inductive Voltage:2kV |
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Static Compatibility |
Rated Inductive Current:2A |
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Rated Inductive Voltage:6kV |