If the phase voltage of a star wound generator is 115V, what would be the line to line voltage?
- 220V.
- 180V.
- 200V.
Explanation
In a star (Y) connection the line-to-line voltage equals the phase voltage multiplied by root 3 (1.732). With a phase voltage of 115V, the line voltage is 115 x 1.732 = 199V, which rounds to the standard aircraft figure of 200V. This is why the typical aircraft AC system is quoted as 115/200V.
Jordi asking:
why?
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