Description

LW*******0KV series SF6 circuit breakers are used for making and breaking normal current and fault current and changing over of circuit, so as to realize the control and protection of power system. Each pole of LW***2 has one break, and LW***0has two breaks. For this kind of circuit breaker, each pole is equipped with a hydraulic operating mechanism which can make single pole and/or three pole electrically gang operation, and could be equipped with closing resistor as requirement. Voltage rating kV **2 **0 Current rating A ***0, ***0 Rated gas pressure (SF6, *0oC) MPa 0.6 Rated short-circuit breaking current kA *0 Rated short-circuit making current (peak) kA **5 Operating mechanism Hydralic Breaking times of rated short circuit current times *6 Breaking time ms &#***4; *0 Opening time ms &#***4; *2 Closing time ms &#***4; **0 CO time ms &#***4; *0 ± 5 Rated operating cycle O*0.3s-CO***0s-CO Rated oil pressure for mechanism MPa *6 ± 0.5 *8 Closing time interval between resistor and main breaks ms - 7 ~ *1 Resistor break close-open time ms - *5 ~ *0 Parallel capacitance per break PF - ***0 ± 5%