FIELD: measuring equipment.
SUBSTANCE: method for partial discharges measurement consists of high voltage application to the test object and temporary fixation of the signal from the sensor, its filtration and recording. At that, a similar recording of the signal is repeated with the object switched off and the second signal is subtracted from the first signal for a similar period of time. The result obtained is used to evaluate the state of electrical equipment. Additionally, the applied test voltage is synchronized with the mains voltage.
EFFECT: improved measurement accuracy by reducing interference.
2 cl, 2 dwg
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