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Wednesday 11 May 2016

Why alternators are rated in kva and not in kw?

Why alternators are rated in kva and not in kw?


     Apart from constant loss, the variable loss which occurs in alternators is the copper loss, occurring in the 3-phase winding which depends of R and the square of the current delivered by the generator, As the current is directly related to the apparent power delivered by the generator, the alternators have only their apparent power in VA/KVA/as their power rating.

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