Measurement of the capacity of the network isolation under the working stress in the devices of automatic compensation of current leakage in mine combined networks
The electric safety issues in the mine combined networks with the help of devices of automatic compensation of the capacitive component of the leakage currents are considered. It is proved that the problem of electric safety of the mine combined networks can be solved by creating protection units against leakages on the alternating control current, thus solving the problem of measuring the capacity of the network isolation under operating voltage. The results of studies on the development of the device measuring capacity of network isolation under operating voltage with the proportional measuring function “current operational - capacity of the network isolation” are presented. Optimal frequency of the source of control current for measuring the capacity under operating voltage is 600 Hz frequency.