The commercial metering point (hereinafter ПKO) is designed to operate in three-phase AC overhead distribution networks with a frequency of 50 Hz and a rated voltage of 6, 10 kV and is used for commercial metering of active and reactive electrical energy. They are installed on the line of dividing power grid facilities between the consumer of electricity and the organization - the electricity supplier, on the existing power transmission line support together with outdoor high-voltage disconnectors.