Simulated Partial Discharge Tester - Yangzhou Darui
Darui Electric recommends
Simulated Partial Discharge TesterWhen the test object CX generates partial discharge under the test voltage, a pulse current is generated through the coupling capacitor Ck, and the pulse signal is picked up by the input unit. After amplification by the low-noise preamplifier, selection of the required frequency band by the filter amplifier, and amplification by the main amplifier (to reach the required amplitude), a visible discharge pulse is produced on the elliptical scanning baseline of the oscilloscope screen, and it is also sent to the pulse peak meter to display its peak value. The time window unit is to select a working period of the pulse peak meter within each cycle of the test voltage; and during this working period, the corresponding display area on the oscilloscope screen is brightened, which can avoid interference from fixed phases. This is the conventional discharge quantity measurement method.
When using the JZF calibration pulse generator to inject a known charge into the test object CX, adjust the fine adjustment knob of the amplifier so that the value displayed on the discharge meter is consistent with the injected charge. Then, during the voltage application test, the measured discharge quantity can be directly read on the meter without calculation, which is very convenient.
The test voltage meter generates a zero-crossing marker signal of the test voltage through the voltage divider resistor R, which can display a zero-marker pulse on the oscilloscope screen, and the magnitude of the test voltage can be displayed by the kV meter.
Alternative Names for Partial Discharge Tester
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Note: The above information and technical parameters are compiled and released by Yangzhou Darui Electric Co., Ltd.
