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UT270 series can quickly and safely measure the grounding system without disconnecting circuit ground lines or the need of auxiliary electrodes. It can measure resistance from 0.01Ω with a resolution of 0.001Ω. UT275 can also measure leakage current up to 30A. These clamps’double insulation design makes them durable tools for outdoor work and effective in blocking interference signals from the environment.
Applications:
Grounding resistance measurement in electricity, telecommunication, meteorology, oilfield, architecture and industrial electric equipment
Features:
1. Resistance limit alarm
2. Auto range
3. Low battery indication
Technical specifications:
| Specifications | Range | UT278A |
| Earth Ground Resistance (Ω) | 0.01~0.099Ω | ±(1%+0.01) |
| 0.1~0.99Ω | ±(1%+0.01) | |
| 1~49.9Ω | ±(1%+0.1) | |
| 50~99.5Ω | ±(2%+0.5) | |
| 100~199Ω | ±(3%+1) | |
| 200~395Ω | ±(6%+5) | |
| 400~590Ω | ±(10%+10) | |
| 600~800Ω | ±(20%+20) | |
| 800~1200Ω | ±(25%+30) | |
| Leakage current (A) | 0mA~9mA | ±(2.5%+1mA) |
| 10mA~99mA | ±(2.5%+5mA) | |
| 100mA~299mA | ±(2.5%+10mA) | |
| 0.3A~2.99A | ±(2.5%+0.1A) | |
| 3A~9.9A | ±(2.5%+0.3A) | |
| 10A~20A | ±(2.5%+0.5A) | |
| 3A~30A | ±(2.5%+0.5A) | |
| Features | ||
| Display count | 4 digits LCD display | |
| Jaw opening | 32mm | |
| Resistance measurement frequency | ＞1kHz | √ |
| Single measurement time | 1 second | √ |
| Current limit alarm | 1mA~499mA | √ |
| Current measurement frequency | 50Hz/60Hz | √ |
| Auto power off | ||
| RS-232 | √ | |
| Visual and audible alarm | √ | |
| Jamming signal recognition | √ | |
| Over-range display | √ | |
| Data storage | 99 | |
| General Characterisitics | ||
| Power | 1.5V battery (LR6) x 4 | |
| Display | 47mm x 28.5mm | |
| Product color | Red and grey | |
| Product net weight | 1160g | |
| Product size | 285mm x 85mm x 56mm | |
| Standard accessories | Batteries, test ring, tool box | |
| Standard individual packing | Gift box, English manual | |
Package:
1 x UT278A UNI T Clamp Earth Ground Resistance Tester
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