The GTP7.1-40.5/4000-40 gas-insulated switchgear is a high-capacity product used in 40.5kV systems with gas-insulated metal-enclosed switchgear, featuring vacuum arc extinction, SF₆ insulation, a slight positive pressure of 0.02MPa, and a gas tank protection rating of IP67. It is unaffected by external environmental conditions, offering simple operation, full enclosure, maintenance-free design, and a long lifespan, making it particularly suitable for special environments such as high altitudes, humid areas, sandy and dusty regions, and salt spray conditions.

Product Features:

SF₆ insulation, vacuum arc extinction.

Superior insulation performance, with overall partial discharge <10pC.

Optimized electric field simulation, meeting insulation performance requirements at zero gauge pressure.

Special heat dissipation structure, achieving 1×4000A natural heat dissipation.

Compact and reliable structure, saving space, with a 70% reduction in volume compared to traditional switchgear.

Advanced process control, laser welding, and helium leak detection ensure gas sealing performance, with an annual gas leakage rate <0.05%.

The high-voltage circuit is sealed inside the gas tank, unaffected by the environment, making it especially suitable for harsh conditions such as humidity, salt spray, and sandy or dusty areas, and can be used at altitudes up to 5000m.

High performance, with a mechanical lifespan of 10,000 operations; fully enclosed, maintenance-free, with a service life of up to 30 years.

Modular unit design concept allows direct removal and replacement of a faulty middle cabinet in special failure scenarios.