LW31A/B-252 Outdoor high-voltage sulfur hexafluoride circuit breakerDetailed product description：

The LW31A (B) -252 outdoor high-voltage sulfur hexafluoride circuit breaker uses sulfur hexafluoride gas as the main insulation and arc extinguishing medium, and is equipped with a highly reliable hydraulic spring operating mechanism. It is mainly used to complete operations such as switching normal load current, cutting off fault current, and converting power lines, achieving control and protection of three-phase mechanical separation and three-phase electrical linkage in the 220kV power system. This product has the characteristics of short breaking time (2 cycles), large breaking capacity, high reliability, and frequent operation.

The main technical performance of LW31A/B-252 outdoor high-voltage sulfur hexafluoride circuit breaker is as follows:
Rated voltage: 252kV
Rated current: 4000A
Rated short-time withstand current 50kA (duration: 3s)
Rated peak withstand current 125kA
Initial opening coefficient: 1.5
Rated power frequency withstand voltage for 1 minute (effective value): 460kV
Rated lightning impulse withstand voltage (peak): 1050kV
Mechanical lifespan: 5000 cycles
Electric lifespan: 20 times