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what are the types of Distribution transformer vector group
please explain
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Answer Posted / john khan
In YNyn11(say), the capital letters represent HV Winding,
so YN means Star Configuration with a Neutral on HV side.
Similarly, yn means on LV side we also have Star
Configuration with Neutral. the number 11 is the phase
difference between primary and secondary. like on a clock
the difference between each hour is 30°. similarly 11
signifies 330° or -30°. that means LV leads HV with 30°.
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