72.5kV 3150A 40kA L-T GCB Introduction structure diagram Main parameters: Circuit Breaker (CB) Type form OFPI-72.5-40L-FAR3 Rated voltage 72.5 kV Rated frequency 50 Hz Rated current 3150 A First-pole-to-clear factor 1.5 Rated short-circuit breaking current(4s) 40 kA Breaking time < 60ms Rated short-circuit making current 108 kA Rated short-time withstand current 40 kA Rated peak withstand current 108 kA Making capacity in short-line fault conditions (L75/L90) 30 / 36 kA Rated out-of-phase breaking current 10 kA Line charging breaking current 10 A Cable charging breaking current 160 A Power frequency withstand voltage 160 / 200 kV Lightning impulse withstand voltage 350 / 410 kV Rated SF6 gas pressure 0.6 Mpa.G Operating type Spring 72.5kV GCB structure diagram BACK ↑TOP
