The concrete wiring is shown in the

The concrete wiring is shown in the following drawing. The test voltage (actual value) should be 80% of the factory default and the voltage-exerting time should be one minute. The lead wire of the low-voltage winding should be short-circuited. Upon the AC voltage-endurance test of the high-voltage winding, the high-voltage test wire should be connected to the high-voltage winding and the low-voltage winding should be earthed. The insulation resistance of the tested winding should be measured before and after the test. The temperature-measuring element should be grounded before the test.