Leakage central-blocking device type CUKI -05 is designed for controlling the earth resistance of a grid (including frequency converters) for rated three-phase voltage of 500V/50Hz with isolated star point on the transformer (system IT), to be used with equipment designed for working on the ground and in underground mining in mine face pits in non-explosive conditions, in conditions without methane explosion hazard and classified as A coal-dust explosion hazard.
