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High voltage generator test operation method

time:2020/6/20   source:华天电力  reading:331 time

Dc high voltage generator is suitable for dc high voltage test of zinc oxide arrester, generator, transformer, switch and other equipment in power department.


Operation method of DC high voltage generator:


(1) The test product is connected between the high-voltage output end and the terminal.


(2) Plug in the power cord and turn on the power switch. The "high voltage on" indicator light (green) is on and the "High voltage Off" indicator light (red) is off. Voltage display meter, current display meter and 0.75 times voltage display meter are all zero.


(3) Rotate the voltage and current setting clockwise to the end, and rotate the voltage setting counterclockwise to zero. (Note: The pressure regulating knob is not at zero, and the "high voltage off" button cannot be started.)


DC Hipot Tester.png


(4) Gently press the "high Voltage" button and the "high Voltage" indicator light is on (red). Slowly adjust the voltage adjustment knob to the voltage value required for testing. During the test, the voltage display table shows the test voltage value in kilovolts. Table 11 shows 75% of the test voltage value in kilovolts. Table 7 shows the test current in kilovolts.


(5) If the button of 0.75x voltage display latch is pressed during the sample test, the displayed value of the 0.75x voltage display table is locked and it is inconvenient to maintain the displayed value. In this way, the zinc oxide arrester test can be conveniently used as the reference voltage.


(6) At any time, press the timing start button to start the time relay. When the time record reaches the predetermined time, the buzzer will send an alarm and cut off the high voltage output.


(7) During the test, if the load current exceeds 0-10% of the rated output current of the instrument. The "overcurrent" indicator lights up to protect against damage to tests and instruments.


(8) During the test, if the test voltage exceeds 0-10% of the rated output voltage of the instrument. The "overvoltage" indicator will be on and protected to prevent damage to the test object and instrument.


(9) At the end of the test, after the counterclockwise voltage adjustment knob turns to zero, the voltage display returns to zero slowly. When the three display meters display zero value, press the button "high voltage on", the indicator light of "High voltage Off" (red) goes out, and the indicator light of "High voltage on" (green) lights on, and then turn off the power switch.


(10) When the sample has a large capacitance, the output voltage can not be returned to zero until the voltage adjustment knob turns to zero. Then discharge the specimen with the discharge rod and remove the wiring of the specimen.


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