The HZBB‑I transformer ratio tester is a high‑precision instrument engineered for testing the turns‑ratio and vector group of power transformers, as well as ratio & polarity for CT and PT. Featuring a 5.6‑inch industrial high‑brightness color LCD, readable even under strong sunlight with intuitive menu prompts, it ensures efficient and reliable field and laboratory diagnostics.
| Parameter | Details |
|---|---|
| Range | 0.9 to 10,000 |
| Accuracy | ≤500:±(reading × 0.1% + 2 digits) 500‑3000:±(reading × 0.2% + 2 digits) ＞3000:±(reading × 0.3% + 2 digits) |
| Resolution | 0.0001(0.9‑9.9999); 0.001(10‑99.999); 0.01(100‑999.99); 0.1(1000‑9999.9); 1(≥10000) |
| Power Supply | AC220V ±10%, 50/60Hz |
| Instrument Weight | 3.8 kg (excluding test leads) |
| Dimensions | 325 mm(L) × 225 mm(W) × 125 mm(H) |
| Operating Temperature | ‑10℃ ~ 50℃ |
| Relative Humidity | ≤90%, non‑condensing |
