Precautions and usage methods for high-voltage measurement system of capacitive voltage divider. The usage method for capacitive voltage divider is to safely ground the grounding terminal of the standard voltage divider. Connect the high-voltage wire above the equalizing ball and tighten it with a wiring screw bolt. Insert the input terminal on the instrument base into the measurement terminal of the digital high-voltage meter, and switch the button switch to the "AC" position during AC measurement. When the measured voltage is less than 20kV, select the "LOW" gear. When it exceeds 20kV, select the "HIGH" gear to obtain higher accuracy test values. Turn on the "Power" switch and select the appropriate gear. At this time, the digital high-pressure meter will display "0.000" or "00.00", and the measurement can begin. After the test is completed, cut off the high voltage, and only enter the site when the reading on the standard voltage divider is "0.000" or "00.00" (during AC testing, the instrument will slowly return to zero, but the high voltage power supply is no longer powered, so please pay attention to the difference between AC and DC testing in this case). During use and maintenance, attention should be paid to the cleanliness of the surface of the voltage divider to prevent contamination. This instrument should be placed in a dry place and properly stored. During the use of the high-voltage measurement system for capacitive voltage dividers, there should be no debris within 2 meters around the voltage dividers below 100KV. (For 150KV-200KV voltage dividers, it is 3 meters, and for 300KV voltage dividers, it is 4 meters) The distance between instruments and voltage dividers, as well as personnel, should be determined in accordance with the operating procedures for digital high-voltage meters in the power industry standards. Our company recommends maintaining a safe operating distance of at least 5-6 meters. 1. Adhere to the principle of handling with care and avoid collisions, squeezing, etc. The convenience brought by the testing work. 2. The standard voltage divider should be placed in dry air and returned to the aluminum alloy case after use to avoid moisture. 3. When a noticeable discharge sound is heard, it indicates that the standard voltage divider may be damp. There should be a dry hair dryer blowing from top to bottom for 1-2 minutes. 4. After completing the communication test, the display will not immediately reset to zero, but slowly decrease. This is because using the true RMS measurement method, the reset time is usually 10-15 minutes. If not completely reset, it will not affect the measurement accuracy. Because there is no "positive" or "negative" polarity in AC testing, the instrument display still has a "-" signal during AC testing. This is a negative signal output designed by the TMS conversion chip to improve its ability to resist electromagnetic interference, which has no impact on testing accuracy; At the same time, in communication measurement, repeated measurements by the instrument without resetting to zero will not affect accuracy. Capacitor voltage dividers are generally used to measure AC high voltage due to their high voltage withstand strength compared to ordinary resistive voltage dividers and their difficulty in breakdown. However, due to the larger response time of its frequency response effect compared to resistive voltage dividers, it is less used in the measurement of impulse voltage than resistive voltage dividers. For the measurement of ultra-high impulse voltage, resistive capacitance voltage dividers are often used. Used for measuring impulse voltage