. With voltage regulator (3kVA～10kVA)

1) Connect according to the wiring diagram, then adjust the overcurrent protection current value based on the test object.

2) Set the voltage regulator to the lowest position, turn on the power switch, the zero position indicator light will illuminate, check for phase loss, and start the test bench.

3) Adjust the voltage regulator so that the triple frequency output voltage reaches the test voltage, use an oscilloscope to measure the output voltage waveform, frequency, and output voltage value to meet the test requirements of the test object.

4) After the test, adjust the voltage regulator to make the triple frequency output voltage zero, the zero position indicator light will illuminate, then open the circuit breaker.

5) Cut off the power supply, and the test is completed.

2. Without voltage regulator (10kVA～1000kVA)

1) Connect according to the wiring diagram, then adjust the overcurrent protection current value based on the test object.

2) Set the inductor to the highest position, turn on the power switch, check for phase loss, and start the test bench.

3) Adjust the inductor handle to increase the voltage on the voltmeter. When the current is at the minimum, resonance occurs, reaching the test voltage value. Measure the output voltage waveform, frequency, and output voltage value until the test power requirements of the test object are met.

4) After the test, adjust the inductor handle to the highest position.

5) Cut off the power switch, and the test is completed.