550kV 5000A 63kA GIL Introduction GIL structure diagram Main parameters: Type form GXL-550/ 5000-63 Rated voltage 550 kV Rated current 5000 A Rated frequency 50 Hz Rated insulation level Rated lightning impulse withstand voltage (BIL) 1675 kV Power frequency withstand voltage 740 kV Rated short–time withstand current 63 kA / 3s Rated peak withstand current 164 kA Degree of protection IP57 Composition of insulation gas SF6 Rated SF6 gas pressure 0.6 MPa 550kV GIL structure diagram BACK ↑TOP