By EECTECH | 18 July 2020 | 0 Comments
What is a high voltage capacitor
Introduction
High-voltage capacitors now generally refer to capacitors above 1kv or capacitors above 10kv.
Generally, a high-voltage capacitor with a rated working voltage of 10KVAC, if judged by a DC voltage, it is often appropriate to use a product rated above 40KVDC. Because a 40KVDC capacitor can only withstand the test of 10KVAC for about 2 minutes, more It is easy to breakdown at high voltage.
The current high-voltage capacitors are mainly divided into: high-voltage ceramic capacitors, high-voltage film capacitors, high-voltage polypropylene capacitors and so on. Among them, high-voltage ceramic capacitors are the most concerned.
Advantage
The main advantages of high-voltage ceramic capacitors lie in their small size, high pressure resistance, stable performance, no oil, no gas, no pollution and no hidden dangers of flammability and explosion.
According to the document requirements of the National Development and Reform Commission, in the future, oily and gas-containing film or oil-immersed capacitors that are prone to explosion, pollution, and flammability will be replaced by new products. This undoubtedly gives the best development opportunity for high-voltage ceramic capacitors. High-voltage ceramic capacitors do not have these hidden dangers, and at the same time, they have irreplaceable advantages: long life, good reliability, small size and solid state.
Misunderstanding
There are often some misunderstandings in the use of high-voltage capacitors: for example, in terms of voltage, in applications such as direct high-speed transmission, X-ray machines, security inspection machines, high-frequency pulses, etc., they are talking about DC voltage. On the contrary, in
In the application of power grid equipment and some power grid detection equipment, technicians often talk about AC voltage. The conventional wisdom is different, engineering and sales personnel need to understand the different voltage requirements.
BY : www.eectech.cn
Leave a Reply
Your email address will not be published.Required fields are marked. *