UNI-T UT276A/UT278A Clamp Earth Ground Testers:
UT276A/UT278A 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. These clamps’ double insulation design makes them durable tools for outdoor work and effective in blocking interference signals from the environment.
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Key Features:
- Resistance limit alarm
- Auto range
- Low battery indication
Specifications:
| 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 |