Why high Voltages come in multiple of 11, like 11 KV, 33KV, 66 KV, 132 KV etc.

Why high Voltages come in multiple of 11, like 11 KV, 33KV,
66 KV, 132 KV etc.

Question Posted / manoj gupta

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Why high Voltages come in multiple of 11, like 11 KV, 33KV, 66 KV, 132 KV etc...

Answer / anoop pandey ji

HV voltages are in multiple of 11 only because they are
stepped-up by transformers having fixed voltage ratios.
these ratios cant be in decimals and are only in whole
numbers.
hence are in multiples in 11.

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