This manual provides a detailed introduction to the YDZ-5A DC resistance quick tester's usage methods, precautions, fault troubleshooting, etc. It is an essential manual for using this instrument.
The YDZ-5A is a compact, lightweight instrument designed for fast, stable, high‑precision measurement of DC resistance, especially for large inductive equipment. It features a back‑lit 240 × 128 LCD display that shows measurement data digitally and offers strong anti‑interference performance.
The manual covers product overview, structure and working principle, main technical features, panel description, detailed operation procedures, safety precautions, fault analysis, transportation and storage instructions, as well as a complete accessories list. This manual is written in Chinese.
| Accuracy | 0.2 % ± 2 digits |
|---|---|
| LCD display digits | 4‑digit |
| Measurement range | 1 µΩ ~ 440 mΩ (and up to 4.5 kΩ) |
| Weight (including accessories) | 8 kg |
| Dimensions | 440 mm × 320 mm × 150 mm (aluminium alloy case) |
| Power supply | AC 220 V |
| Operating environment | Temperature –10 °C ~ +40 °C, RH ≤85 % |
The instrument must be grounded both through the power‑line ground wire and the chassis ground post before connecting any terminals.
Connect the U+ clip inside the I+ clip and the U‑ clip inside the I‑ clip; this arrangement ensures correct measurement.