252 kV LT G.C.B Introduction structure diagram Main technical data: 1 Rated Voltage kVrms 252 2 Rated Voltage Arms 4000/4800 3 Rated frequency Hz 50 4 Rated frequency kArms 50 5 Rated withstand current kApeak 135 6 Rated short time making current kArms 135 7 Rated short time withstand current(3 s) kArms 50 8 Rated power-frequency withstand Voltage kVrms 460/605 9 Rated Lightning impulse withstand Voltage kVpeak 1050/1050+150 10 Opening time ms < 21 11 Closing time ms < 100 12 Breaker time ms < 40 13 Rated operating sequence - O-0.3 s-CO-180 s-CO 14 Short-line fault breaking current(L75/L90) kArms 37.5/45 15 Rated out-of-phase breaking current kArms 12.5 16 Rated line-charging breaking current Arms 160 17 Rated cable-charging breaking current Arms 250 18 Rated gas pressure Mpa 0.6/0.5 19 Frist-pole-to-clear-factor pu 1.5 20 Frist-pole-to-clear-factor - Spring 21 Type operation - Single/Triple pole 252 kV structure diagram of high voltage cylinder-type BACK ↑TOP
