Open and Short Circuit Test of Transformer | Electrical4u Jan 05, 2019The connection diagram for open circuit test on transformer is shown in the figure. A voltmeter, wattmeter, and an ammeter are connected in LV side of the transformer as shown. The voltage at rated frequency is applied to that LV side with the help of a variac of variable ratio auto transformer. The HV side of the transformer is kept open.
Related with circuit diagram of load test on single phase transformer