Difference between lightning arrester and surge arrester pdf

Posted on Sunday, June 6, 2021 3:02:10 PM Posted by Nana H. - 06.06.2021 and pdf, and pdf 2 Comments

difference between lightning arrester and surge arrester pdf

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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 continuity of supply. It is connected between the line and earth, i. The following are the damages that are caused by the travelling wave on the substation equipment. When a travelling wave reaches the arrestor, its sparks over at a certain prefixed voltage as shown in the figure below.

Selection & Application Of Surge Arrester

All the terms in the electrical industry can be confusing. Even the professionals are confused sometimes. You might have heard the terms lightning arrester and surge arrester. It is important to know the difference. You might hear them used interchangeably too. According to GVA Electrical Limited , an electrician in London , both types of arresters are important for protecting your home. There is only one major difference between the two.

Selection & Application Of Surge Arrester

Lightning generates voltage surges in different ways and they directly hit on your house. It can strike wiring of the circuit within the walls of the house. Lightning can hit an object close to your home to cause a surge like the ground or a tree. So it plays an essential role to protect the electrical devices and traction installation from surges. The proper protection for this device is very necessary to check the normal power supply of rolling stock for smooth running in electrified sections. This article discusses an overview of the lightning arrester, types, working, advantages and disadvantages.

Electrical equipments connected in power system are exposed to many stresses, and one of major concern is protecting them from transient over voltages. Transients over voltages are caused by lightning discharges and switching operations. A surge arrester is a protective device connected in parallel with system equipment to be protected. Overvoltages at the protected equipment are limited by the arrester that conducts energy associated with surge to ground and protect the equipment. The highly non-linear characteristics of an arrester allow the arrester to limit the voltage across its terminal nearly a constant value over a wide range of arrester current. During the time arrester is in conduction, a large percentage of surge voltage appears across line surge impedance and not across equipment to be protected. By properly applying the arrester, the equipment insulation will not be exposed to damaging voltages, thus eliminating the opportunity for insulation failure.

Lightning Arrester Pdf

Surge arrester is used to protect the circuit or electrical equipment from high voltage transient or electrical surges. It may damage the electrical equipment. In order to avoid this, the surge arresters are normally used. Lightning arrester works like surge arrester from outside of the conductor.

Lightning Arrester

GE offers an extensive line of surge arrester products. From distribution class to EHV arresters up to kV rating as well as high energy varistors for series capacitor applications.

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COMMENT 2

  • protects the installation from inside while. Norberta L. - 10.06.2021 at 00:35
  • Different terms used for arresters are sometimes confusing even professional engineers and electricians use them interchangeably. Ligia T. - 13.06.2021 at 08:35

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