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How to choose a good quality capacitor?

by:GREEN TECH     2021-04-07


How to choose a good quality capacitor? Self-healing low-voltage shunt power capacitors that pass the test should meet the national standard GB12747-91. The capacitor components are inspected and screened before leaving the factory, and only qualified components are allowed to be assembled. The main indicators of the entire capacitor, such as capacity, loss, withstand voltage, and insulation, have been tested, and only allowed to leave the factory after the appearance has passed the inspection.

The capacitors shipped out of the factory should meet the requirements of the technical indicators of the capacitor instruction manual that comes with it.

In the case of capacitor breakdown, overheating, obvious bulging, failure, etc. during the warranty period, the manufacturer shall replace it. And these qualities require manufacturers to be able to promise. Changjie Electronics also has a commitment to this.

General users often ignore the instruction manual, and the precautions for use should be carefully understood and followed during installation. As we all know, the impedance of a capacitor is inversely proportional to frequency. As the frequency increases, the loss also increases. Measures should be taken to limit the harmonics and inrush current in the circuit. Capacitors always generate heat, so special attention should be paid to ventilation and cooling.

After the installation of the reactive power compensation device, during the trial operation, the system should be tested, and measures should be taken in time if overvoltage, overcurrent, oscillation, harmonics, etc. are found, which is very necessary for the normal operation of the capacitor. 

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