YDZ-50A DC resistance quick tester is a DC resistance measuring instrument produced by Hubei Hanjiang Power Co., Ltd. The instrument has a wide measurement range, high accuracy and simple operation.
This manual introduces the YDZ-50A DC resistance quick tester, describing its purpose, key features, and safety requirements before use. It covers the instrument’s panel layout, connection methods, and measurement procedures for both normal and temperature‑rise tests.
Additional sections detail data storage and printing, troubleshooting, transportation, storage, unboxing inspection, and after‑sales service, ensuring users can operate and maintain the device safely and efficiently. This manual is written in Chinese.
| Test current options | 2.5 A, 5 A, 10 A, 20 A, 50 A |
|---|---|
| Accuracy | ±0.2 % full scale |
| Data storage capacity | 255 measurements |
| Display resolution | 0.1 µΩ |
| Power supply | AC 220 V ± 22 V, 50 Hz ± 2 Hz |
| Maximum power consumption | 420 W |
| Operating temperature | 0 °C – 40 °C |
| Relative humidity limit | ≤ 80 % |
The instrument can store up to 255 measurement records.
Connect the power and ground lines securely, ensure the instrument is grounded, and avoid touching live terminals or exposed conductors.