Why generating power limited to 11kv?

Answer Posted / 7anoter4

There are generators of which supply voltage is up to 30 kV
[usually 22-23 kV for 500-800 MVA].The problem is the
insulation- will be very expensive for higher voltage-the
generator it self and the auxiliary switchgear and
transformer. A medium voltage generator and a step-up
transformer is cheaper and more convenient for maintaining.

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