1 Rated voltage kV 126
           2 Rated current A 2000
           3 Rated short-time withstand current kA    40/3s
           4 Rated peak withstand current kA 100
           5 Rated lightning impulse withstand voltage kV Across open breaks 550+100
           To earth 550                                                                                                                         6 Rated 1min power frequency
           withstand voltage kV Across open breaks 230+70
           To earth 230