Variable Frequency Series Resonance Withstand Voltage DeviceCharacteristics
● The number of cables used at voltage levels of 500kV and below is large, and the testing workload is heavy. Therefore, this type of withstand voltage testing device is small in size, light in weight, and the portable cable withstand voltage testing system was born;
● This system requires that the weight of any component that can be moved by a single person on site does not exceed 30kg, making it suitable for on-site handling;
● The power supply uses 220V single-phase or 380V single-phase power, making it convenient for on-site power access;
● The reactor part adopts dry-type epoxy casting, which is beautiful and reliable, and meets the requirements of various types of cables.
Technical Parameters
1. Rated output voltage: 0～660kV (RMS) and below
2. Output frequency: 20～300Hz
3. Resonant voltage waveform: sine wave, waveform distortion rate ≤1%
4. Full load working time: continuous working time 60min
5. System quality factor: ≥20 at maximum load
6. Frequency adjustment: fineness 0.1Hz, instability ≤0.01%
7. Working power supply: 220V or 380V single-phase mains
8. Product configuration and applicable objects
Scope of application description: Unless otherwise specified, the 10kV cable length given in the table above is the length under 2.0 times withstand voltage, 32Hz~300Hz. If it is 2.5 times withstand voltage, 39Hz~300Hz, the cable length should be correspondingly reduced by 33%.
Product configuration description: 1. Users can optionally configure compensation capacitors
2. Special test objects can be customized
