News

News

  • How do we classify the polymer insulator?

    According to the definition of “Basic Terminology of Power Engineering” GB/T50297, an insulator is a device used to support and insulate a conductor. Insulators The main insulators made of porcelain, glass or organic materials are called porcelain insulators, glass insulators or organ...
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  • Detection technology of composite insulator in operation

    Detection technology of composite insulator in operation

    With the development of the power industry, the transmission capacity has increased sharply, and the voltage level has been continuously improved. 110, 220, 500, 750 and even 1000 kv have emerged and matured. The power system has higher and higher requirements for insulators, and new insulators a...
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  • What’s the working principle of metal oxide surgearresters?

    What’s the working principle of metal oxide surgearresters?

    The basic working principle of metal oxide surge arresters is a zinc oxide valve disc sealed in a porcelain sleeve. The zinc oxide valve is based on ZnO as a matrix, and a small amount of  Bi2O3、MnO2、Sb2O3、Co3O3、Cr2O3 non-linear resistors are added.   It has much better nonlinear volt-a...
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  • what are the types of lightning arrester?

    what are the types of lightning arrester?

    There are multiple classification methods for lightning arresters, It can be divided into AC surge arrester and DC surge arrester according to the voltage type of the power grid. According to different protection objects of DC surge arresters in converter stations, they are divided into surge arr...
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  • where is the lightning arrester placed?

    where is the lightning arrester placed?

    In the actual installation of the arrester, there are two methods of installation on the upper side of the fuse cutout and the lower side of the fuse cutout. Then, will the installation of the lightning arrester on the upper side of the fuse cutout actually weaken the lightning protection of the ...
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  • How does a lightning arrester work?

    How does a lightning arrester work?

    Lightning arrester is a protection device that can release overvoltage energy and limit the magnitude of overvoltage withstand on the insulation of the device. It is usually connected between the wire and the ground and connected in parallel with the protected device. Under normal circumstances, ...
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  • What‘s the role of the lightning arrester? Why do we need the arrester?

    What‘s the role of the lightning arrester? Why do we need the arrester?

    In the last article, we talked about the difference between lightning arresters and lightning rods. In this article, we will talk about why lightning arresters must be used in some circuits. As we know,the installation of lightning rods and lightning conductors can prevent lightning from directl...
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  • What’s the difference between the lightning arrester and lightning rod?

    What’s the difference between the lightning arrester and lightning rod?

      Maybe you have such a question—— Is the lightning arrester and lightning rod the same? What role do they play in the circuit. In fact, the difference between the two words is completely different in principle and function. left: lightning arrester;      right:  lightning rod The principle...
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  • How do lightning arresters work?Why is the lightning arrester placed close to the transformer?

      Definition: The device which is used for the protection of the equipment at the substations against travelling waves, such type of device is called lightning arrester or surge diverter. In other words, lightning arrester diverts the abnormals high voltage to the ground without affecting the con...
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  • what is the meter socket?

    what is the meter socket?

    A meter socket is an outdoor electric socket that connects a meter to a house. The meter socket must be weatherproof so it can withstand the effects of rain, wind, snow, and other natural factors. The main difference between the various meter sockets is the amperage they can safely read; they typ...
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  • material of arcdrop type fuse cutout

    material of arcdrop type fuse cutout

    Arc extinguishing cover material: The arc extinguishing cover is subject to the high temperature of the arc, so there are certain requirements for the material of the arc extinguishing cover. With the development of electrical technology, especially the development of high-voltage electrical appl...
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  • function of arcdrop type fuse cutout.

    function of arcdrop type fuse cutout.

    What is the arc extinguishing cover: The arc extinguishing hood is a more commonly used device that allows the arc to contact the solid medium, reduces the temperature of the arc, and thereby accelerates the arc extinguishment. Arc-extinguishing drop-out fuse is an outdoor drop-out high-voltage ...
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