Content on this page supplied with permission from this web site of Jim Lux
This page has some actual measurements and calculations on GE Type 5021G10 transformer, which was originally intended for an illumination power supply for a copier. It has a lot of leakage reactance to limit the current. The nominal specs are 120V input, 4500V output, 400mA short circuit output current. This transformer is interesting because it has a third winding, nominally 600V, for connecting a capacitor for power factor correction. At rated output, this transformer draws about 8.5Amps, i.e. about 1kVA
Open Circuit Tests
Short Circuit Tests
Calculated:
Reactive Power 585.9 Vars
Magnetizing Circuit R: 200 + j23.76 Ohms
Series equivalent: 1.628+j13.5 Ohms
Copyright 1997, Jim Lux / xfmrex1.htm / Back to transformer measurements /Back to HV Home / Back to home page / Mail to Jim