Capacitor Voltage DividerUsage Method
Securely ground the grounding terminal of the standard voltage divider.
Connect the high-voltage wire to the top of the corona ball and tighten it with the wiring bolt.
Insert the input terminal on the instrument base into the measuring terminal of the digital high-voltage meter. When measuring AC, switch the toggle switch to the "AC" position.
If the measured voltage is less than 20kV, select the "LOW" range; when it exceeds 20kV, select the "HIGH" range to obtain higher precision test values.
Turn on the "Power" switch and select the appropriate range. At this time, the digital high-voltage meter will display "0.000" or "00.00", and measurement can begin.
After the test is completed, cut off the high voltage and wait until the reading on the standard voltage divider shows "0.000" or "00.00" before entering the site (during AC tests, the meter will slowly return to zero, but the high-voltage power supply is already de-energized, so please note the difference between AC and DC tests in this case).
During use and maintenance, always keep the surface of the voltage divider clean and prevent contamination.
This instrument should be stored in a dry place and properly maintained.
Precautions
During use, no debris should be within 2 meters around the voltage divider below 100KV (3 meters for 150KV-200KV dividers, 4 meters for 300KV dividers). The distance between the meter, voltage divider, and personnel should be determined according to the operating procedures for digital high-voltage meters in the electric power industry standard. Our company recommends maintaining a safe operating distance of at least 5-6 meters.
1. Adhere to the principle of handling with care; do not collide, squeeze, etc. This brings great convenience to the detection work.
2. The standard voltage divider should be placed in dry air. After use, it should be put back into the aluminum alloy case to prevent moisture.
3. If a noticeable discharge sound is heard, it indicates that the standard voltage divider may be damp. Use a dryer blower to blow from top to bottom for 1-2 minutes.
4. After completing an AC test, the dedicated display meter will not return to zero immediately but will decrease slowly. This is because the true RMS measurement method is adopted, and the return-to-zero time is generally 10-15 minutes. If it does not fully return to zero, it does not affect measurement accuracy. Since AC has no "positive" or "negative" polarity, the meter may still show a "-" sign during AC tests. This is a negative signal output designed by the TMS conversion chip to improve anti-electromagnetic interference capability and does not affect test accuracy. Additionally, during AC measurement, repeated measurement without the meter returning to zero will not affect accuracy.
