The utility model discloses a big current rush counting assembly of high -voltage electrical equipment, the device include mutual electrical connection's energy storage mutual -inductor and heavy current signal acquisition mutual -inductor, and wherein energy storage mutual -inductor and high -voltage electrical equipment ground end electrical connection have connect rectifier module and energy storage module in proper order on the energy storage mutual -inductor, have connect trigger module, count module and display module on heavy current signal acquisition mutual -inductor in proper order, the energy storage module is connected electrical connection between trigger module and the energy storage module with the count module again. The utility model discloses the precision is high, the threshold values is adjustable and the energy saving.