Archive | Lightning

Expulsion Type Lightning Arrester (With Diagram) | Electrical Engineering

Expulsion type lightning arrester is also known as a protector tube. It consists of –  (i) a tube made of fibre which is very effective gas-evolving material (ii) an isolating spark gap (or external series gap) and (iii) an interrupting spark gap inside the fibre tube. During operation arc due to the impulse spark-over inside the fibrous tube causes some [...]

By |2017-08-22T10:10:13+05:30August 22, 2017|Lightning|Comments Off on Expulsion Type Lightning Arrester (With Diagram) | Electrical Engineering

How does Lightning Affects a Line? | Power System | Electrical Engineering

There are two main ways in which lightning affects a line: 1. Direct Lightning Strokes 2. Surge Due to Electrostatic Induction.   Way # 1. Direct Lightning Strokes: A direct stroke can take place in several ways. In one way a cloud attains a large amount of charge, it induces an opposite charge on the tall objects, such as temples, churches [...]

By |2017-08-22T10:10:12+05:30August 22, 2017|Lightning|Comments Off on How does Lightning Affects a Line? | Power System | Electrical Engineering

Protection of Power System against Lightning | Electrical Engineering

All the electrical equipment must be protected from severe damage due to the lightning strokes. The problem of protection of power systems against lightning can be studied under the following heads:- 1. Protection of power stations and substations from direct lightning strokes 2. Protection of overhead transmission lines from direct lightning strokes 3. Protection of electrical equipment from travelling waves. [...]

By |2017-08-22T10:10:11+05:30August 22, 2017|Lightning|Comments Off on Protection of Power System against Lightning | Electrical Engineering
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