... used in the electricity system of and under 7.2(12)kV, as well as operating of 200A, 400A, 630A and ... poles and N poles.2.ParametersItemParameterTypeJCZ-7.2JCZ-12Rated Voltage (kV)7.212Rated Current (A)200,400,630,800400,630, ... 6300,80004000,6300,80001min Industrial Frequency Bearing Voltage (kV)3242Thunder Stroking Bearing Voltage (kV)6075Semi-wave Permission Pass Current (kA)4050Mechanical ...