AC/DC hipot test set is a device used to test the insulation strength of electrical equipment and can be tested in both AC and DC modes.process of changing from AC to DC mainly relies on the following components:

　　Power supply section:AC/DC hipot test set is usually equipped with an AC power supply and a DC power supply.AC power supply can provide AC voltage,and the DC power supply can provide DC voltage.By switching the output of the power supply,the device can be changed from AC to DC.
 
　　Control section:AC/DC hipot test set is equipped with a control system that can control and adjust the power supply.Through the control system,the output can be selected as AC voltage or DC voltage and the size and frequency can be adjusted.

　　Output section:output section of the AC/DC hipot test set includes output interfaces and output circuits.In AC mode,the output interfaces and output circuits transmit AC voltage to the tested equipment;in DC mode,the output interfaces and output circuits transmit DC voltage to the tested equipment.

　　Switching section:AC/DC hipot test set is also equipped with a switching section for switching the output of the power supply.switching section is usually composed of relays,switches,etc.,and can perform the operation of switching from AC power supply to DC power supply.

　　It should be noted that different models and brands of AC/DC hipot test sets may have differences,and the specific implementation methods may vary.When using the device,it is necessary to operate according to the operation instructions and safety regulations of the equipment,and ensure the correct switching of the working mode to ensure the accuracy and safety of the test.