Variable Frequency AC Resonant Test System for 110kv Power Cables and Transformer AC Withstand Voltage Test
The Variable Frequency AC Resonant Test System has large output capacity and high test voltage. It is the best choice for insulation withstand voltage test of cables, power transformers, GIS, and generators;
It is safe and reliable. When the test sample is broken down, it will only detune the system and the voltage will drop rapidly, so that the discharge will not cause damage to the test system.
Interface of Variable Frequency AC Resonant Test System
GDXZ-1300KVA/260KV Variable Frequency AC Resonant Test System for 110kv Power Cables and Transformer AC Withstand Voltage Test:
Scope of Application:
Meets the AC withstand voltage test of 10KV,35KV and 110kV power cables,110KV power transformers,GIS and other power system equipment.
Device composition:
It consists of variable frequency power supply,excitation transformer, high-voltage resonant reactor and capacitive voltage divider;
Specifications (Can be customized according to different test products):
| Rated Output voltage |
260KV |
| Rated output capacity |
1300KVA |
| Rated current |
5A |
| Single Reactor |
650KVA/130KV |
| Output Waveform |
Sine wave |
| Measurement Accuracy |
Effective value 1.5 class |
| Full load working time |
allow continuous work 60min |
| Power Supply |
Recommend 380V±10%,50/60Hz (can be customized according to your needs). |
| Work Frequency |
30Hz-300Hz |
Advantages of Variable Frequency AC Resonant Test System for 110kv Power Cables and Transformer AC Withstand Voltage Test
1.The required power supply capacity is greatly reduced. Series resonant power supply is the use of resonant reactor and the capacitance of the test product resonance to generate high voltage and high current, in the whole system, the power supply only needs to provide the part of the system active consumption, therefore, the power supply power required for the test is only 1/Q of the test capacity.
2.The weight and volume of the equipment are greatly reduced. Series resonant power supply, not only eliminates the bulky high-power regulator and ordinary high-power frequency test transformer, and, resonant excitation power supply only need to test the capacity of 1/Q, making the system weight and volume greatly reduced, generally for the ordinary test device 1 / 10-1 / 30.
3.Improving the waveform of output voltage. The resonant power supply is a resonant filter circuit, which can improve the waveform distortion of the output voltage and obtain a very good sinusoidal waveform, effectively preventing the harmonic peak from accidental breakdown of the specimen.
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