FIELD: electricity.
SUBSTANCE: invention relates to the field of electrical measuring equipment and can be used in the search for an element with reduced insulation resistance in a branched electrical network of operational DC. In the proposed earth search method in the electric network of operational DC, the DC level is periodically changed through the leakage resistance and a place of ground short-circuit is determined by the difference of the currents in the damaged and undamaged controlled elements.
EFFECT: technical result is increasing measurement accuracy with a decrease in the number of stationary current sensors.
1 cl, 4 dwg
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