(Solved): Question-II: The resistances and leakage reactance of a 30-kVA, 60-Hz, 2400-V:240-V distribution t ...

Question-II: The resistances and leakage reactance of a 30-kVA, 60-Hz, 2400-V:240-V distribution transformer are: R? = 0.68 0, X? = 7.80 [referred to HV side (primary)] R? = 0.0068 2, X2 = 0.078 02 [referred to LV side (secondary)] a) Draw the equivalent circuit referred to: (i) the high-voltage side (HVS) (primary). (ii) the low-voltage side (LVS) (secondary). Label the impedances numerically. b) Draw the phasor diagram of the transformer with the secondary current as a reference phasor and assuming unity power factor (all parameters must be referred to the secondary side). c) Consider the transformer to deliver its rated kVA to a load on the low-voltage side with 230-V across the load (VLoad). (i) Find the high-side terminal voltage (V?) for a load power factor (p.f.) of 0.85 leading. You can ignore magnetizing branch of the transformer. (ii) If magnetizing branch is not ignored, what are the exciting current (1) and primary current (1?) where Rc = 1000 and Xm - 1000 ? =