Answer Posted / andy

I see many here ridiculously answer form factor, T/F
equation, etc.... Are u nuts.... Only in India and few other
countries have multiples of 11... Almost all other countries
have only 110V.... Other than 110V they have 25KV, 50KV
systems....

In Neyveli, There is 230Kv switchyard.

So in other countries do they use T/F with different Form
factors or what... It has something to do with internal
factors... Depends on probably Insulators as their value
varies depending on Temperatures which is unique for
different countries... In India Porcelain is Predominantly
used earlier so we use multiples of 11...

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