FIELD: electricity.
SUBSTANCE: method implementation is as follows. In the course of the electric installation normal operation one measures one uses a clip-on ammeter to measure current in the cable line neutral conductor and, simultaneously, current flowing through grounding device; the cable line neutral conductor resistance is calculated with subsequent calculation of the grounding device resistance. Usage of the proposed method for measurement of the grounding device resistance in the course of active electric installations operation enables evaluation of the grounding device resistance compliance with the PUE rules without the electric installation disconnection, dismantlement of the grounding device connection to the electric installation and usage of special devices intended for grounding resistance measurement.
EFFECT: simplification of the procedure of grounding device resistance measurement.
3 dwg
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