Transformer specifications
Transformer specifications
(OP)
Can someone tell me if there is a reference that provides typical distribution transformer impedances? I'm looking for %Z and either X/R ratios or %X and %R values.
The X/R table in IEEE red book is not adequate.
The X/R table in IEEE red book is not adequate.






RE: Transformer specifications
http://www.ccb.org/docs/NAVGRAPH/16272.pdf
Tables PM-1, 2, and 3 are for the energy cost per kWh of x<$.04, .04<x<$.08, and x>$.08 respectively.
Let me know if that helps.
Regards,
William
RE: Transformer specifications
See Table 11 if you're looking for oil-filled distribution type transformers.
I would also recommend Conrad St. Pierre's book "A Practical Guide to Short Circuit Calculations".
RE: Transformer specifications
Thanks
The NAVGraph document will also be useful to me since it has transformer losses. Thanks William!
RE: Transformer specifications