User manual for the Hezhong HZBP-DL variable‑frequency resonant withstand device, covering safety, operation, specs and troubleshooting.
The HZBP‑DL variable‑frequency resonant withstand device is designed for AC dielectric withstand testing of power equipment such as cables, transformers and busbars up to 10 kV. It consists of a variable‑frequency power supply, excitation transformer, reactor and capacitive voltage divider.
The manual provides safety guidelines, detailed operation of the power supply, technical parameters, application examples, and common fault troubleshooting to ensure safe and effective use of the equipment. This manual is written in Chinese.
| Rated voltage | 54 kV |
|---|---|
| Output voltage waveform distortion | ≤1.0 % |
| Continuous work time (rated condition) | 60 min |
| Quality factor (Q) at 45 Hz | ≥30 |
| Input power supply | 220 V/380 V single‑phase or three‑phase |
| Frequency adjustment range | 30 Hz–300 Hz |
| System measurement accuracy | ±1.5 % |
| Device weight | ≤50 kg |
Only qualified personnel should operate it, ensure proper grounding, use the specified power cable, avoid touching live parts, keep the device dry, and follow all warning signs.
Turn off the power, let the instrument stand for about 30 minutes, then press the “Reset” key on the panel before restarting.
Possible causes include poor grounding, incorrect circuit wiring, an open circuit in any component, or a mismatched compensation capacitor.