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The UNI-T UT275 is a clamp earth resistance tester for measuring grounding resistance from 0.01 to 1000Ω and leakage current up to 30A. Its 28mm clamp jaw enables grounding-system checks without disconnecting ground lines or using auxiliary electrodes.
| Product Type | Clamp Earth Resistance Tester |
|---|---|
| Model | UT275 |
| Display | LCD, 10000 counts |
| Jaw Opening | 28 mm |
| Data Storage | 30 sets |
| Power Supply | 1.5V LR6 batteries × 4 |
| Product Dimensions | 293 × 90 × 66 mm |
| Net Weight | 1.32 kg |
| Measurement | Range | Accuracy |
|---|---|---|
| Earth Ground Resistance | 0.01–0.099Ω | ±(1% + 0.01Ω) |
| Earth Ground Resistance | 0.1–0.99Ω | ±(1% + 0.01Ω) |
| Earth Ground Resistance | 1–49.9Ω | ±(1.5% + 0.1Ω) |
| Earth Ground Resistance | 50–99.5Ω | ±(2% + 0.5Ω) |
| Earth Ground Resistance | 100–199Ω | ±(3% + 1Ω) |
| Earth Ground Resistance | 200–395Ω | ±(10% + 5Ω) |
| Earth Ground Resistance | 400–590Ω | ±(20% + 10Ω) |
| Earth Ground Resistance | 600–1000Ω | ±(25% + 20Ω) |
| Leakage Current | 0–299mA | ±(2.5% + 2mA) |
| Leakage Current | 0.3–2.99A | ±(2.5% + 100mA) |
| Leakage Current | 3–30A | ±(2.5% + 300mA) |
