40.5kV (SF6 Lower Isolation) Ring Main Unit
The 40.5kV (SF6 Lower Isolation) ring main unit is designed for 40.5kV systems with SF6 gas insulation and a three-position line side scheme. The product is primarily used in ring network power supply for new energy applications (40.5kV wind power, photovoltaic prefabricated substations, offshore wind power units, compact underground substations, and integrated boosting equipment for energy storage). It is safe to use, unaffected by climate, easy to install, requires minimal maintenance, saves space, and offers high safety.
Main Technical Features:
Vacuum arc extinction, SF6 insulation.
Three-position switch on the line side, offering comprehensive, flexible, and versatile schemes with strong expandability, allowing left, right, or top expansion.
Excellent airtight performance with advanced process control, laser welding, and helium leak detection, achieving an annual gas leakage rate of ≤ 0.01%.
Long mechanical life: circuit breaker 10,000 operations, three-position switch 3,000 operations.
Gas tank protection rating of IP67, with fully shielded busbar expansion.
Wide range of applications, including 40.5kV wind power, photovoltaic prefabricated substations, offshore wind power towers, compact underground substations, and integrated boosting equipment for energy storage.
