RATING OF LIGHTENING ARRESTER FOR 11 KV LINE IS 9 KV BUT WE
KNOW THAT LIGHTENING ARRESTER IS USED FOR OVER VOLTAGE
PROTECTION SO WHY NOT THE RATING OF LIGHTENING ARRESTER BE
MORE THAN 11KV ???????????????//
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Answer Posted / nageshwar
FOR A 11KV LINE LINE TO GROUND VOLTAGE IS 11KV/SQRT(3). IT
GIVES OF THE ORDER OF 6KV ONLY. AS ARRESTER IS USED FOR
LINE TO GROUND TO DISCHARGE THE FAULT CURRENT TO GROUND ITS
RATING SHOULD BE MORE THAN 6KV. GENERALLY WE USE 9KV.
| Is This Answer Correct ? | 32 Yes | 16 No |
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