FIELD: distribution networks with isolated neutral.
SUBSTANCE: method includes registration of appearance of zero series voltage and creating a signal to ground one of phases of low voltage buses through current-limiting resistance, while in case of increased current in one of phases of branching line, signal is generated to disable that line, in branching lines, fact of current passage through each support is registered by means of registration devices installed on each one, after the line is disabled, its supports are examined, and the one to which current leakage was attributed is identified as the one with grounding short circuit.
EFFECT: increased safety of maintenance personnel, and also people and animals who accidentally found themselves in a zone of grounding short circuit, increased reliability of electric supply and reduced time of influence of harmful factors in the line.
1 dwg
