Description
UT278A Clamp Earth Ground Tester can quickly and safely measure the grounding system without disconnecting circuit ground lines or the need for 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 of UT278A :
Grounding resistance measurement in electricity, telecommunication, meteorology, oilfield, architecture, and industrial electric equipment
Features of UT278A:
1. Resistance limit alarm
2. Auto range
3. Low battery indication
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) | |
Secondary 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 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 | |
Package Includes:
- 1 x UT278A Clamp Earth Ground Teste
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