Description
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 effective in blocking interference signals from the environment.
Features of UT278A Clamp Earth Ground Tester
● Resistance limit alarm
● Auto range
● Low battery indication
Specifications of UT278A Clamp Earth Ground Tester
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 |
Product included
UT278A Clamp Earth Ground Tester x 1
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