The Variable frequency resonant test system is used to test the insulation withstand performance of cables.When performing cable withstand tests,the following steps can be followed:

　　1.Connect the cable to be tested to the Variable frequency resonant test system,ensuring that the two ends of the cable are connected to the high-voltage terminal and ground terminal of the equipment.

　　2.Set the working parameters of the Variable frequency resonant test system,including output voltage,frequency,and other parameters,adjusting them according to the cable specifications and requirements.

　　3.Start the withstand test by gradually increasing the output voltage of the equipment until the specified test voltage is reached.

　　4.During the test,observe if there are any leakage or breakdown phenomena in the cable,stop the test promptly,and record the test results.

　　5.After the test is completed,turn off the Variable frequency resonant test system,disconnect the cable,and analyze and evaluate the test results.

　　By following the above steps,the Variable frequency resonant test system can be used for cable withstand testing to ensure that the insulation performance of the cable meets the requirements.