FIELD: electricity.
SUBSTANCE: measurement device of partial discharges includes sensor of partial discharges, which is made in the form of inductance coil, analogue-digital and optic converters, which are all located inside electrostatic screen and having common grounding, and common power supply source of converters; at that, input of analogue-digital converter is connected to potential output of inductance coil, and its output is connected to input of optic converter to the output of which there attached is optic cable connected to external measurement device. Device is equipped with signal and magnetising windings located on electrostatic screen and having common grounding with the above elements, and with amplifier with negative amplification factor; at that, signal winding is connected to amplifier input, and magnetising winding is connected to amplifier output.
EFFECT: increasing interference immunity of measurement device of partial discharges.
3 cl, 1 dwg
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