10
regulator clockwise and evenly, and the voltage output is provided by the voltage regulator.
And closely watch the meter reading, when the required high voltage value is raised,
press the drop voltage, and press the timing button (yellow) in time. At this time, the digital
display time relay timing display time (time unit is "s", seconds). When the time arrives, the
control box (platform) sends out sound and light alarm, and rotates the regulator handle in
reverse direction in time until the regulator returns to zero. Up to now, release the timer
button;
4. In the process of boost or withstand voltage test, if there is over current such as
short circuit, flash-over and breakdown, the current relay protection trips and the voltage
regulator automatically turns off, indicating that the tested product is unqualified. At this
time, the voltage regulator should be returned to zero, the power supply should be cut off
and the tested product should be checked.
V. Use and Maintenance
1.
When checking and accepting the open box, check whether the main control circuit
wiring is loose and whether the voltage regulator brushes are in good contact.
2. When not in use for a long time, 500 V Megohmeter is used to measure insulation
resistance before use, and its resistance value is not less than 0.5 M.
3. The power supply voltage shall conform to the input voltage value on the nameplate of
the box.
4. The box is equipped with over-current protection and has been adjusted to 80% of the
rated current. When used for small load, it should be reset according to the rated capacity
current of the tested product.
5. After use, the door cover should be closed to keep the inside of the box clean.
VI. Conditions of Use
1.
Environmental temperature: 0-40
℃
;
2. Altitude:
＜
1000 m;
3. Relative humidity:
＜
85%;
4. There should be no gas, steam, chemical dust and other explosive and corrosive media
that seriously affect the insulation in the workplace.
