ZF11-252 GIS

1.Main Features 1.1 Compactness. 1.2 Application of the latest development of the electric field and flow field analysis. 1.3 High current breaking capacity circuit breaker with unique construction, leading to reliable electric and mechanical performance and adjustment-free feature in site erection. 1.4 Good agreement with IEC standards concerned. 1.5 Long mechanical endurance, low operating noise and small radio interference. 1.6 High component interchangeability, easy handing and transportation, etc2.Main technical DataITem Unit Data Rated voltage kV 252 Rated current A 3150 Rated SF6 gas pressure(20℃) CB & CT compartment MPa 0.6 Other compartments 0.45 Rated peak withstand current (peak) kA 125 Rated short time withstand current (rms) kA 50 (3s) Rated short circuit breaking current kA 50 First pole to clear factor 1.5 Overvoltage multiple of reversal phase 2.5 Rated continuously breaking time (50kA) Times 26 Rated operating sequence O-0.3