1 Rated voltage kV 363
           2 Rated current A 4000、5000
           3 Rated short-time withstand current kA    63/3s
           4 Rated peak withstand current kA 160
           5 Rated lightning impulse withstand voltage kV Across open breaks 1175+295
           To earth 1175
           6 Rated 1min power frequency
           withstand voltage kV Across open breaks 510+210
           To earth 510
           7 Rated switching impulse
           withstand voltage kV Across open breaks 850+295
           To earth 950