Consequences of capacitor rated voltage not matching the power supply voltage

Usually the current flowing through the capacitor is proportional to the applied current: I=2nfcu, ampere. The compensation capacitance of the capacitor is proportional to the square of the applied voltage: Q=2nfcuu, kvar. Therefore, if the voltage rating of the capacitor does not match the supply voltage, the current through the capacitor and its reactive capacity will change.If the power supply voltage is too high, although the compensation effect will be better, the circuit through the capacitor will increase, causing the capacitor to breakdown or even explode; If the power supply voltage is too low, the compensation effect will be greatly reduced, making it economically uneconomical.

        Therefore, once you find that the rated voltage of the capacitor does not match the voltage of the connected network, you should stop using it immediately.By the same token, even if the rated voltage of the capacitor is the same as the grid voltage, if the grid voltage fluctuates greatly during the operation of the capacitor, the above-mentioned effects will be produced on the capacitor, but to varying degrees.