The SF6 gas-insulated metal-enclosed switchgear is designed for 35kV distribution systems with a rated frequency of 50Hz. This cabinet-type medium-voltage gas-insulated switchgear utilizes SF6 gas as the insulating medium, integrating GIS technology with switchgear technology to form a complete product. This product is an indoor complete unit for three-phase AC single-busbar and busbar sectioning applications. It is primarily used in power distribution systems of power plants, substations, subways, and electrified railways to achieve control, protection, and monitoring of power supply systems and loads.
Main Technical Parameters:
Rated Voltage: 40.5kV
Rated Current: 1250A 2500A
Rated Short-Circuit Breaking Current: 25kA 31.5kA
Circuit Breaker Mechanical Life: 10,000 operations
Disconnector Mechanical Life: 3,000 operations
Earthing Switch Mechanical Life: 3,000 operations
Product Features:
● Maintenance-free: High enclosure protection rating (IP67);
● Compact size: Miniaturized design saves floor space;
● Safe and eco-friendly: Meets “five-prevention” functions, equipped with pressure relief devices, strong insulation performance, extremely low annual gas leakage rate (≤0.01%);
● Easy operation: Operating mechanism features position indicators and mechanical interlocking devices; remote control and operation achievable via optional electric operating devices;
● Strong expandability: Flexible expansion and sealing via bus connectors and end caps;
● Fully insulated and sealed, resistant to condensation and contamination, suitable for high-altitude regions (4000 meters);
● Comprehensive mechanical and electrical interlocks effectively prevent misoperation;
● Special insulation structure optimizes surrounding electric field distribution;
● Environmentally friendly design using high-strength, recyclable thermoplastic materials as insulation medium;
● Primary circuit enclosed within sealed gas-filled chamber, allowing safe touch of outer casing;
● Fully sealed, fully insulated, flood-resistant cable plugs enhance product safety.
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