Matters to be noted in the AC Resonant Test System with Variable Frequency testing:

　　For the boosting speed,it can be slightly faster when the test voltage is below 30%.Afterwards,the boosting should be uniform,and the boosting should be carried out at about 5%of the test voltage/s,or the rated test voltage should be raised for 10-15 seconds;

　　During the boosting process,there should be no sudden increase or decrease.The changes in the voltmeter and other instruments should be monitored.When the rated test voltage is 0.5 times,the capacitance current of the tested equipment should be read.When the rated voltage is reached,the time should be calculated and the capacitance current should be re read.After the time is up,the voltage should be slowly reduced to zero before disconnecting the power supply;

　　If during the experiment,it is found that the pointer of the voltmeter swings greatly,the subject emits an abnormal sound,the indication of the milliampere meter increases sharply,and the subject emits smoke,fire,or continuous spark discharge on the insulation surface,the voltage should be immediately lowered.After hanging a ground wire on the high-voltage side,the cause should be identified;

　　For devices without clear regulations,the general withstand voltage time is 1 minute;The pressure resistance time of tools such as the insulated green rod is 5 minutes.After the experiment is completed,the ground wire should be hung in a timely manner,and then the relevant parts should be contacted without any heating phenomenon;