The main differences between the variable frequency series resonant test device and the ordinary series resonant test device are mainly reflected in the following aspects:
 

　　Frequency Converter Function:The variable frequency series resonant test device has the function of frequency conversion,which can adjust the frequency according to the actual needs to adapt to different resonant test requirements.In contrast,the frequency of a common series resonant test device is usually fixed and cannot be adjusted.

　　Frequency Range:The frequency range of the variable frequency series resonant test device is usually wide,covering a large frequency range and suitable for differen resonant tests.On the other hand,the frequency range of a common series resonant test device is relatively narrow,requiring selection based on the actual situation.

　　Applicable Objects:The variable frequency series resonant test device is suitable for resonant tests of various electrical equipment,including transformers,motors,and circuits.The common series resonant test device is mainly suitable for resonant tests of motors,transformers,and other equipment.

　　Control Method:The variable frequency series resonant test device usually adopts digital control,which has high accuracy and stability and can achieve automated control.In contrast,the common series resonant test device usually adopts analog control,which is relatively simple.

　　In summary,compared to a common series resonant test device,the variable frequency series resonant test device has a wider range of applications and higher control accuracy,which can meet the resonant test requirements of more different equipment.