550kV 6000A 63kA L-T GCB Introduction structure diagram Main parameters: Circuit Breaker (CB) Type form OFPI-550-63L-HAR Rated voltage 550 kV Rated frequency 50 Hz Rated current 6000 A First-pole-to-clear factor 1.3 Rated short-circuit breaking current(4s) 63 kA Breaking time < 60ms Rated short-circuit making current 170.1 kA Rated short-time withstand current 63 kA Rated peak withstand current 170.1 kA Making capacity in short-line fault conditions (L75/L90) 47.5 / 56.7 kA Rated out-of-phase breaking current 15.75 kA Line charging breaking current 500 A Cable charging breaking current 500 A Power frequency withstand voltage 700 / 1055 kV Lightning impulse withstand voltage 1675 / 1675+450 kV Rated SF6 gas pressure 0.6 Mpa.G Operating type Hydraulic 550kV GCB structure diagram BACK ↑TOP
