High voltage capacitor is generally referred to capacitor above 1kv or 10kv.
If judged by DC voltage, a 10KVAC high-voltage capacitor is suitable to use in above 40KVDC. Because the 40KVDC capacitor can only withstand 10KVAC for about 2 minutes of testing, it is easy to break down at higher voltages.
At the present, High voltage capacitor is mainly divided into: high voltage ceramic capacitor, high-voltage film capacitor, high-voltage polypropylene capacitor and so on. Among them, high-voltage ceramic capacitor is the most concerned.
The advantage of high-voltage ceramic capacitor including small size, high withstand, stable performance, oil-free, gas-free, non-polluting, no flammable and explosive dangers.
According to the documents of the National Development and Reform Commission, in the future, oily and gas-containing explosives will be produced. The pollution, flammable film or oil-immersed capacitors will be replaced by new products. This will undoubtedly give the best development opportunities for high-voltage ceramic capacitors. High-voltage ceramic capacitors do not have these hidden dangers, and at the same time have irreplaceable advantages: long life, good reliability, small size, solid state.
There are some misunderstandings while using high-voltage capacitors: for example, in terms of voltage, in high-intensity, X-ray machines, security inspection machines, high-frequency pulses, etc., it is DC voltage. On the contrary, in grid equipment, and some grid detection In terms of equipment application, technicians often say AC voltage. In terms of customary terms, engineering and sales personnel need to understand the different voltage requirements.
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