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State the difference between Surge Arrester and Lightning
arrester,Both are same or not?
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Answer Posted / faisal
Surge Arresters are widely also known Lightning arresters.
However strictly speaking the two are in fact different. Surge arresters are devices installed on Over head lines, substations etc to avoid a surge of an additional current/ voltage/charge due to various faults occurring and since one of the major reasons of a surge is due to lightning these surge arresters are also coined as Lightning arrester.
However Lightning arresters are separate instruments specifically designed for protection of structures solely from lightning this equipment neutralizes the charge by nullifying the charge it receives from the lightning and grounds it.Lightning arresters don't intervene with the excess current / voltage surge due to electrical faults - it is solely for LIGHTNING protection unlike surge arrestors which is a protection against electrical faults and Lightning which is a natural charge dispenser
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