raviiisc

 Profile Answers by raviiisc 

• Jul 11th, 2010

 

Vector group is a big topic which comes in case of Three Phase transformer connections.

There are some connections like Dd0, Dd12, Yy0, Yy12, Dy, Yd.......and so on.

Here 180 degrees group,0 degrees groups are same.

remaining are 30 degrees, 150 degrees, 210 degrees connections.

so large history is there.

Refer PS Bimbra (electical machinery)