why lightning arrestor are made by 2 stack of insulator but why cvt are fully

why lightning arrestor are made by 2 stack of insulator but
why cvt are fully 1 stack of insulator.

Question Posted / jayanta dey

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why lightning arrestor are made by 2 stack of insulator but why cvt are fully 1 stack of insulator..

Answer / k.prakashchandra

Single stack LAs are available.The manufacturers usually
manufacture stacks ,each of 33 or 110 KV stacks and join
them in series to suit the working voltage. We have 110 KV
LA having 3 stacks of 33 KV each, also.

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