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How to test the quality of high-voltage capacitors? |Focus on mid-to-high-end brand capacitor manufacturers

by:Shenmao     2021-06-11
Use a voltage regulator, an ammeter and a voltmeter (which can be replaced by a multimeter) to add an integer current to the capacitor (controlled by a voltage regulator), and then calculate the capacitor impedance based on the voltage and current readings, and then divide 3184 by the calculated capacitance The resistance value, the result obtained is similar to that on the nameplate of the capacitor. It is not a problem with the capacitor. On the contrary, the capacitor is broken. In addition, do a withstand voltage test on the capacitor, seal the two plates with wires, and perform a voltage withstand test on it. If there is no high-voltage generator, you can also use a 2500V shaker to insulate it against the ground. If there is no voltage regulator, you can also use 2500V to shake the meter between phases. The resistance value will gradually increase during the re-shaking process, but the needle should be reversed immediately when the meter is turned off. Otherwise, there is a problem with the capacitor. Remember to discharge after shaking.
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