Transformer Connection
Transformer Connection
(OP)
In hydro-electric plants in our country,the excitation transformer connection is Dy5. What is the reason for this connection.Why not normal Dy11 connection ?
In some countries generator tarnsformer connection is Yd5.Any special reason for this, instead of usual YD1 or 11 connection.
In some countries generator tarnsformer connection is Yd5.Any special reason for this, instead of usual YD1 or 11 connection.






RE: Transformer Connection
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It may be like this in theory and practice, but in real life it is completely different.
The favourite sentence of my army sergeant
RE: Transformer Connection
I'm not a transformer designer so I don't know the benefits of either design. They seem the same to me.
The exciter transformer output is going to a rectifier that puts out DC which has no "phase" orientation.
RE: Transformer Connection
Thank you wilson.You are right -designwise there is no difference between 11 and 5 o'clock except for connections.My query is whether this has anything to do with the nature of load coming on secondary side? Hydro power experts may be able to throw some light.