UT276A/UT278A 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. These clamps’ double insulation design makes them durable tools for outdoor work and e ective in blocking interference signals from the environment.
Models: UT276A, UT278A
Features of UT276A/UT278A Clamp Earth Ground Testers
Certificates: CE, RoHS
Resistance limit alarm
Auto rangeSpecifications of UT276A/UT278A Clamp Earth Ground Testers
| Specifications | Range | UT276A | UT278A |
| Earth Ground Resistance (Ω) | 0.01~0.099Ω | ±(1%+0.01) | ±(1%+0.01) |
| 0.1~0.99Ω | ±(1%+0.01) | ±(1%+0.01) | |
| 1~49.9Ω | ±(1%+0.1) | ±(1%+0.1) | |
| 50~99.5Ω | ±(2%+0.5) | ±(2%+0.5) | |
| 100~199Ω | ±(3%+1) | ±(3%+1) | |
| 200~395Ω | ±(6%+5) | ±(6%+5) | |
| 400~590Ω | ±(10%+10) | ±(10%+10) | |
| 600~800Ω | ±(20%+20) | ±(20%+20) | |
| 600~1000Ω | |||
| 800~1200Ω | ±(25%+30) | ±(25%+30) | |
| Leakage current (A) | 0mA~9mA | ±(2.5%+1mA) | |
| 10mA~99mA | ±(2.5%+5mA) | ||
| 100mA~299mA | ±(2.5%+10mA) | ||
| 0mA~299mA | |||
| 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 | 32mm | |
| Resistance measurement | 1kHz | √ | √ |
| frequency | |||
| Single measurement time | 1 second | √ | √ |
| Current limit alarm | 1mA~499mA | √ | √ |
| Current measurement | 50Hz/60Hz | √ | √ |
| frequency | |||
| Auto power off | |||
| RS-232 | √ | √ | |
| Visual and audible alarm | √ | √ | |
| Jamming signal recognition | √ | √ | |
| Over-range display | √ | √ | |
| Data storage | 99 | 99 | |
| General Characteristics | |||
| 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 | ||
| Standard quantity per carton | 6pcs | ||
| Standard carton measurement | 610mm x 375mm x 320mm | ||
| Standard carton gross weight | 18kg | ||
| Optional accessories | RS-232 interface cable, PC software CD | ||
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