three single phase transformers impedance matching
three single phase transformers impedance matching
(OP)
When installing a bank of utility transformers, say 100kVA 25kv:277/480V, using three single phase transformers, what effect does unmatched impedance have on the operation of the bank? If one transformer is 2.0% and the other two are 1.6% for example, what will this do?
K2ofKeyLargo






RE: three single phase transformers impedance matching
RE: three single phase transformers impedance matching
RE: three single phase transformers impedance matching
RE: three single phase transformers impedance matching
http://www.dstar.org/P_R_Software_GSVIC_1.htm
RE: three single phase transformers impedance matching
Voltage regulation.
277 x (1. - .02) = 271.46 volts
277 x (1 - 1.6) = 272.568 volts
difference, = 1.108 volts
One phase will run 1.108 volts higher than the others, the rare time that the incoming phases are exactly equal voltage.
I wouldn't worry.