How long cable can be tested by 1620kVA/540kV AC Resonant Test System with Variable Frequency

　　HMCXZ-1620kVA/540kV AC Resonant Test System with Variable Frequency can meet the test requirements and test subjects: 　　1.AC withstand voltage test of 330kV GIS,test frequency 30-300Hz,test voltage not exceeding 530kV,test time of 1 minute.

　　2.AC withstand voltage test of 330kV main transformer with full insulation,capacitance≤0.01-0.019uF,test frequency 45-65Hz,test voltage not exceeding 504kV,test time of 1 minute.

　　3.Meet the AC withstand voltage test of 220kV/1200mm2 cable with a length not exceeding 500 meters,capacitance≤0.095uF,test frequency 30-300Hz,test voltage not exceeding 216kV,and test time of 60 minutes.

　　4.Meet the AC withstand voltage test of 110kV/630mm2 cable with a length not exceeding 1000 meters,a capacitance of≤0.2uF,a test frequency of 30-300Hz,a test voltage not exceeding 128kV,and a test time of 60 minutes.

　　5.Meet the AC voltage withstand test of 35kV/300mm2 cable length not exceeding 3000 meters,with a capacitance of≤0.5835uF,a test frequency of 30-300Hz,a test voltage not exceeding 52kV,and a test time of 60 minutes.

　　Main technical parameters and functions of the device

　　1.Rated capacity:1620kVA;

　　2.Input power supply:three-phase 380V voltage,frequency 50Hz;

　　3.Rated voltage:540kV;Rated current:3A;

　　4.Working frequency:45-300Hz;Device output waveform:sine wave;

　　5.Waveform distortion rate:Output voltage waveform distortion rate≤1%;

　　6.Quality factor:The device's own Q≥30(f=50Hz);

　　7.Protection function:It provides overcurrent,overvoltage,and sample flashover protection for the tested product(see section on variable frequency power supply);

　　8.Measurement accuracy:System effective value of 1.5 levels;