why should we place 9KV lightning arrestors in 11KV
substation ?
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Answer Posted / mohan rao
Lightning arrestors are always placed between line and
Gronund. Line to Ground Voltage of a 11 kV System is 6.35
kV. The lighning arrestoer rating should be above this
level but below 11 kV so that 9 kV arrestor is suitable.
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