The basic law of capacitor damage ① The damage rate of high-voltage phase-shifting capacitors is higher than that of low-voltage capacitors; ②The damage rate of outdoor capacitors is higher than that of indoor capacitors; ③The damage rate of capacitors in summer is higher than that in other seasons; ④Factors such as large voltage fluctuations, more harmonic voltages, more frequent switching, and close to resonance conditions all increase the damage rate of the phase shifting capacitor; ⑤ The damage rate of a capacitor without a parallel resistor is higher than that of a capacitor with a parallel resistor. How to judge whether the capacitor is damaged? Usually, a multimeter can be used to check whether the capacitor is damaged. When checking, first turn the multimeter selector knob to the ohm range RX1k or RX10k, and then alternately touch the two ends of the capacitor with two meter pens. If the pointer of the meter deflects to a certain extent and returns to the starting position very unexpectedly, the capacitor is intact; if the pointer does not return to the starting position after the pointer swings, the resistance value indicated by the pointer at this time is the leakage resistance value of the capacitor; If the pointer deviates to the zero ohm position, it means that the capacitor is short-circuited; if the pointer does not move at all, it may be that the capacitor is broken or invalid. Looking for more information about the capacitors, including their discharge time, you can learn more about them on Easybom (https://www.easybom.com/).
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