Frequency modulation type series resonance test device
1.Applicable scope of device
1. Meet the AC withstand voltage test of 10kV/300mm2 cable, the
capacitance per unit length is 0.3755μF/km, the cable length is
2000m, the capacitance of the tested cable is 0.75μF, the test
voltage is 22kV, and the test time is 5min;
2. Meet the 35kV/240mm2 cable AC withstand voltage test, the
capacitance per unit length is 0.175μF/km, the cable length is
1000m, the capacitance of the tested cable is 0.175μF, the test
voltage is 52kV, and the test time is 180min;
3. Meet the AC withstand voltage test of 110kV/630mm2 cable, the
capacitance per unit length is 0.1880μF/km, the cable length is
100m, the capacitance of the tested cable is 0.188μF, the test
voltage is 128kV, and the test time is 60min;
2. The device follows the standard
GB50150-2016 "Power Equipment Handover Test Regulations"
DL/T 596-1996 "Preventive Test Regulations for Power Equipment"
GB1094.1-GB1094.6-96 "Enclosure protection grade"
GB2900 "Electrical Terminology"
GB/T16927.1~2-1997 "High Voltage Test Technology"
GB 191-2000 "Packaging, Storage and Transportation Graphical Signs"
JB/T 9641-1999 "Test Transformer"
IEC358(1990) "Coupling Capacitor and Capacitance Voltage Divider"
Q/WFK005-2005 "Test Transformer" Fanke Company Enterprise Standard
Q/WFK008-2004 "Test Reactor" Fanke Company Enterprise Standard
3. Environmental conditions of the device
1. Ambient temperature: -5℃-+45℃;
2. Relative humidity: ≤90﹪, no condensation;
3. Altitude: ≤1000m.
4.Fourth, the main technical performance requirements of the device
1. Rated capacity: 280kVA;
2. Rated voltage: 35kV; 140kV;
3. Rated current: 2A;
4. Power supply: 380V±10%;
5. Rated capacity of variable frequency power supply: 20kW;
6. Working frequency: 45-300Hz;
7. Frequency adjustment fineness: 0.01Hz; frequency instability:
8. Working time: 180min continuous operation is allowed under rated
9. Temperature rise: after rated continuous operation for 180
minutes, the temperature rise of each part of the device is ≤65K;
10. Output waveform: sine wave, waveform distortion rate <1%;
11. Quality factor: the device itself Q>30 (when f=40Hz);
12. Protection: with overcurrent, overvoltage and flashover
protection (see the frequency conversion power supply section for
13. Measurement accuracy: 1.5 effective value.