What does Transformer vector connection Dy11y5 means?
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Answer Posted / nitin khatana
D stand for hv winding in delta and y stand for lv winding in star.
11 stand for 30 degree lead.
and Dy5 means D stand for hv winding in delta and y stand for lv winding in star.
5 stands for 150 degree lag.
The Dy5 is not a legal 3 phase connection. it is obtain from Dy1 connection by change the connection of lv star winding star(form star from a1b1c1 to a2b2c2 to form Dy5 connection)
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