Connect the test product between the high-voltage output terminal and the ground terminal.
Turn on the power switch, lightly press the "Start" button, the "Power" indicator (red) is on, slowly adjust the voltage coarse adjustment knob and the voltage fine adjustment knob to test. The voltage display meter during the test indicates the test voltage value in kV; the 0.75 times voltage display meter indicates 75% of the test voltage value in kV; the current display meter indicates the test current value in mA.
Press the 0.75 times voltage display lock button during the test of the sample, and the display value of the 0.75 times voltage meter will be locked. It is inconvenient to maintain the displayed value, so that it can be conveniently used as a reference voltage when testing the zinc oxide arrester. Press the timer on button at any time to activate the time relay. When the timer reaches the preset time, the buzzer will sound an alarm. During the test, if the load current exceeds 0-10% of the rated output current of the instrument, the “over-current” indicator will be on, and the over-current protection will prevent damage to the sample and the instrument.
After the test is over, adjust the voltage coarse adjustment knob and the voltage fine adjustment knob counterclockwise. After turning them to the zero position, the voltage indicator slowly returns to the zero position, and the "zero position" indicator light is on. When the three indicators show zero value, press the stop button lightly, the red indicator light will go out at this time, and then turn off the power switch. When the electric capacity of the tested product is large, after the voltage coarse and fine adjustments are adjusted to zero, the output voltage display meter cannot return to zero for a long time, then press the stop button first, and then shut down. Then use a discharge rod to discharge the test product, and then remove the test product wiring.
