Assignment:
A 100 kVA, 60 Hz, 7200/480 V, single-phase transformer has the following parameters (all expressed in ohms):
RHV = 3.06
RLV = 0.014
XHV = 6.05
XLV = 0.027
Xm,HV = 17,809
Re,HV = 71,400
The transformer supplies a load that draws rated current at 0.75 power factor lagging at 480 V at the load. Sketch the approximate equivalent circuit for this transformer, and determine:
a. the input voltage
b. the efficiency
c. the percent voltage regulation
Provide complete and step by step solution for the question, use formulas.