Consequences of capacitor voltage rating inconsistent with supply voltage

Usually, the current passed by the capacitor is directly proportional to the current added: I=2nfcu, an. The capacitance of the capacitor is proportional to the square of the voltage added: Q=2nfcuu, 1000 V. Therefore, if the rated voltage of the capacitor is not consistent with the supply voltage, the current and reactive capacity of the capacitor will change. If the power supply voltage is too high, the compensation effect will be better, but the circuit of the capacitor will increase, which leads to the breakdown of the capacitor and even the explosion. If the power supply is too low, the compensation effect is greatly reduced and the economy is not economical.

Therefore, once the rated voltage of the capacitor is not consistent with the voltage of the network, it should be stopped immediately. The same reason, even if the rated voltage of the capacitor is the same as the power grid voltage, but in the operation of the capacitor, if the power grid voltage fluctuates greatly, the capacitor will have the above effects, only the degree is different.