A wind turbine substation uses a step-up transformer to prepare generated electricity for grid transmission.
The number of turns on the primary coil of a step-up transformer is:
This transformer is designed to increase the voltage from 600 V to 24 000 V24\,000\text{ V}24000 V.
The primary current is 800 A.
State the equation linking primary voltage, primary current, secondary voltage, and secondary current for a 100% efficient transformer.
Calculate the secondary current, assuming that the transformer is 100% efficient.
During operation, electrical resistance in the copper windings generates thermal energy. Explain how this heating effect affects the power output of the transformer compared to its power input.
