FIELD: electricity.
SUBSTANCE: in direct-current voltage determining method which is based on formation of circuit with high limiting input resistance the monitoring of voltage is performed at input limiting resistance of sensitive member working in nanoampere range, from the output of which the voltage presence signal is supplied to the circuit of its processing and conversion to sound-and-light signals.
EFFECT: elimination of actions of electrostatic charges and determination of voltage presence on current-carrying parts of electrical plant by recording the current flow of nanoampere range.
1 dwg
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