how to test a transformer with a digital multimeter pdf?

To test a transformer with a digital multimeter, first ensure the transformer is disconnected from power. Set the multimeter to the resistance (ohms) setting. Measure the primary winding resistance by connecting the probes to the primary terminals, and then measure the secondary winding resistance similarly. Compare the readings to the transformer’s specifications; significant deviations may indicate a fault. Additionally, check for short circuits by measuring resistance between windings and ground. Always follow safety protocols.