#### emperror123

##### Member level 5

i were facing a problem on single phase transformer on calculation part.

i been sketches out the single phase transformer equivalent circuit.

and some information given

f = 60hz

s = 20kVA

V1 = 2400v

V2 = 240v

R1 = 3Ω

R2 = 0.03Ω

X1 = 6.5Ω

X2 = 0.07Ω

Xm = 15kΩ

Rc = 100kΩ

lagging P.F. = 0.8

and here the problem come. i were trying to solve the problem.

which is

i got Xeq1 = R1 + a^2R2 = 13.5Ω, and Req1 = X1 +a^2X2 = 6Ω

i got primary voltage is V1 = 2400V and V2' = aV2 = 2400V

how do i calculate the primary current and secondary current?

and also the source voltage.

thank you and much appreciate with your help to solve the problem