• Hello! Welcome to the official website of Guangdong Dean Electric Technology Co., Ltd!

    無功補償控制器廠家

    News

    Product

    Contact us

    Jiangmen Xinhui lijiu Electric Co., Ltd

    Telephone number: (+ 86) - 0750-6122405 (+ 86) - 0750-6126137 (+ 86) - 0750-6131503

    Fax No. (+ 86) - 0750-6131898

    Hotline: Miss Zhou 18922032371 13825500675

    E-mail: lijiugosi@163.com

    Address: No.1 Jinshun Road, East District, Jinguzhou Development Zone, Xinhui District, Jiangmen City, Guangdong Province

    Postal Code: 529100

    website: www.ums-boat.com

    How to choose the rated voltage of power capacitor correctly?

    Your current location: Home page >> News >> Industry News

    How to choose the rated voltage of power capacitor correctly?

    Date of release:2021-01-21 Author: Click:


    電力電容器電壓


    The power capacitor is very sensitive to voltage. Because the loss of capacitor is proportional to the square of voltage, overvoltage will make the capacitor heat seriously, the insulation of capacitor will accelerate aging, shorten its life, and even break through electric shock.


    Generally, the grid voltage should be lower than the rated voltage of the capacitor itself, and higher than 10% of its rated voltage, so as to prolong the service life of the capacitor. It should be noted that higher operating voltage and higher operating temperature cannot occur at the same time. Therefore, when the working voltage is 1.1 times the rated voltage, cooling measures need to be taken.


    The rated voltage of the capacitor is at least equal to the operating voltage of the power grid, and the influence of the capacitor itself should also be considered. It should be noted that the operating voltage of the power grid sometimes differs greatly from the nominal voltage of the power grid. In addition, when the capacitor is connected, the voltage from the power supply to the capacitor installation will rise, and the harmonic voltage will also rise.


    Considering the above factors, the rated voltage level of capacitor shall be determined at least 5% higher than the nominal voltage of circuit.


    For example, 380V circuits use at least 400V capacitors. Secondly, the user should choose according to the longer duration and higher continuous voltage of the actual use situation. Especially when the capacitor circuit is in series with reactor, the voltage on the capacitor terminal will rise due to the series reactor, which will exceed the operation voltage of the power grid. Rated voltage of capacitor behind series reactor = system voltage / (1-k (reactance rate)).


    For example, for a series capacitor with 12% reactance rate, the rated voltage of the capacitor should be 400V / (1-0.12) = 455v.


    The address of this article:http://www.ums-boat.com/en/news/424.html

    Key word:Voltageofpowercapacitor,Selectionofpowercapacitor,Powercapacitorfactory

    Recently browse:

    Telephone number: (+ 86) - 0750-6122405 (+ 86) - 0750-6126137 (+ 86) - 0750-6131503

    Fax No. (+ 86) - 0750-6131898

    Hotline: Miss Zhou 18948962956, Mr. Zhong 13825500653

    E-mail: lijiugosi@163.com

    Address: No.1 Jinshun Road, East District, Jinguzhou Development Zone, Xinhui District, Jiangmen City, Guangdong Province

    Postal Code: 529100

    Copyright ? http://www.ums-boat.com/en/ Guangdong Dian Electric Technology Co., Ltd Specializing in Power capacitor manufacturer,Manufacturer of reactive power compensation controller,Composite switch manufacturer ,Welcome to inquire!
    粵ICP備18104981號   Powered by Clouds platform   Technical Support: 華企立方
    黄色视频网址大全,能看的国产乱伦视频,国产日韩人人肏人人艹,免费看黄无码av免费看,男的把鸡鸡插进女的鸡鸡里