(1) Connect the test product between the high-voltage output terminal and the ground terminal.

(2) Plug in the power cord, turn on the power switch, the "high voltage off" indicator (green) is on, and the "high voltage on" indicator (red) is off; the voltage display meter, current display meter, and 0.75 times voltage display meter display both Is zero.

(3) Turn the voltage and current setting knobs clockwise to the end, and turn the voltage adjustment knobs counterclockwise to the zero position. (Note: The voltage adjustment knob is not in the zero position, and the "high voltage close" button cannot be activated)

(4) Lightly press the "high voltage close" button, the "high voltage close" indicator (red) lights up, slowly adjust the voltage adjustment knob to the required voltage value for testing. During the test, the voltage display meter indicates the test voltage value in kV; the 0.75 times voltage display table 11 indicates 75% of the test voltage value in kV; the current display table 7 indicates the test current value in uA.

(5) Press the 0.75 times voltage display lock button during the test of the sample, the display value of the 0.75 times voltage display meter will be locked, and 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.

(6) Press the timing on button at any time to activate the time relay. When the timer reaches the preset time, the buzzer will sound an alarm and the high voltage output will be cut off at the same time.

(7) 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.

(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, over protection, to prevent damage to the sample and the instrument.

(9) After the test is over, after turning the counterclockwise voltage adjustment knob to the zero position, the voltage indicator slowly returns to the zero position. When the three indicators show zero values, lightly press the "High Voltage Min" button. At this time, the "High Voltage Close" indicator (red) is off and the "High Voltage Sub" indicator (green) is on, then turn off the power switch.

(10) When the electric capacity of the tested product is large, after the voltage adjusting knob is turned to the zero position and adjusted to the zero position, the output voltage display meter will not return to zero for a long time, press the "high voltage minute" button first, and then shut down. Then use a discharge rod to discharge the test product, and then remove the test product wiring.