The HZDD-20A is a highly automated, portable solution engineered for precision measurement of conduction resistance between grounding leads in power substations.
| Project | Indicators & Parameters | Remarks |
|---|---|---|
| Test current | 1A, 2.5A, 5A, 10A, 20A | — |
| Measurement range | 200μΩ–20Ω (varies by current) | — |
| Minimum resolution | 0.1μΩ | — |
| Accuracy | ±(0.5% ± 2 digits) | — |
| Display | Liquid crystal display | 4 significant figures |
| Data storage | 1000 groups | — |
| Power supply | AC 220V ± 10V, 50Hz ± 1Hz | Fuse 5A |
| Max consumption | 500W | — |
| Dimensions | Main unit: 405 × 230 × 355 mm | Wire box: 360 × 260 × 180 mm |
| Weight | Main unit: 15.1 kg | Wire box: 5.75 kg |
