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How to test the withstand voltage value of cbb capacitors|Focus on mid-to-high-end brand capacitor manufacturers

by:Shenmao     2021-06-03
To test the withstand voltage of the cbb capacitor, we can make a simple adjustable high-voltage circuit, string an ammeter in the circuit to limit the current, keep the current to microampere level, and then gradually increase the voltage to reach the rated value; if you choose destructive In the test, increase the voltage gradually, and the ammeter shows a current of microampere or less, which is basically the breakdown voltage of the cbb capacitor. If we want to better test the withstand voltage of the cbb capacitor, then we have to use a leakage current tester to test. The voltage is set according to the nominal voltage of the capacitor, for 60 seconds, the positive and negative poles of the instrument are connected to the positive and negative poles of the capacitor (do not connect them reversely), and then start, if the leakage current displayed after the time is within the standard range, cbb capacitor The leakage current is qualified, and the withstand voltage is generally no problem. The withstand voltage of the capacitor is generally 1.15~1.2 times its nominal voltage (1.2 times for low voltage. 1.15 times for high voltage), and test with a leakage current tester. If the leakage current is within the standard range and the product does not emit If it is hot, there is no problem with the voltage resistance of this capacitor.
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