User manual for the HZZB‑T tester that measures ratio and polarity of current and voltage transformers.
The HZZB‑T tester, produced by Hezhong Electric, is designed to test the ratio and polarity of current and voltage transformers, as well as single‑phase ratios of power and test transformers. It uses a voltage‑measurement method, offering a compact size (2 kg) and a wide measurement range.
The manual provides technical specifications, wiring diagrams for voltage and current transformer testing, step‑by‑step operating instructions, charging procedures, and a list of accessories included with the instrument. This manual is written in Chinese.
| Power supply | Internal rechargeable battery or 220 V AC |
|---|---|
| Measurement objects | Current transformer, voltage transformer, power transformer, test transformer |
| Ratio measurement range | 1‑10000 |
| Measurement accuracy | 0.2 % |
| Polarity test | Minus polarity (normal), plus polarity (abnormal) |
| Dimensions | 280 mm × 220 mm × 120 mm |
Connect the charger to the instrument and to a 220 V mains outlet; the red indicator lights while charging and turns green when charging is complete.
A “减极性” (minus polarity) result is normal; a “加极性” (plus polarity) result indicates abnormal polarity.