High voltage circuit breaker
252 kV | LW43 Chint Electric Co.,Ltd.

LW43 252kV SF6 Circuit Breaker

Application: for control and protection of 220 kV power system.
Ratings: 252kV, 4000A
Standards: IEC 62271-100

Features:
 High breaking capacity.
 Reliable insulation performances.
 Low noise, without leakage of oil and gas.
 Easy installation and adjustment. Less maintenance
 Long service life.

Technical Data:
Rated voltage (kV): 252
Rated current (A): 3150 to 4000
Rated short-circuit breaking current for Isc (kA): 40 to 50
Rated short-circuit making current (peak) [kA]: 100 to 125
Rated short-time withstands current/continuous time (kA/s): 40/3 to 50/3
Rated withstands current (peak) [kA]: 100 to 125
Power frequency withstands voltage for 1min (Breaks) [kV]: 395 to 460, 395+145
Power frequency withstands voltage for 1min (To earth) [kV]: 395 to 460
Lighting impulse withstand voltage (peak) (Breaks) [kV]: 950 to 1050, 950+206
Lighting impulse withstand voltage (peak) (To earth) [kV]: 950 to 1050