UNI-T Ut278A+ Clamp Earth Ground Tester - Variety House

UNI-T Ut278A+ Clamp Earth Ground Tester


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 from the environment.


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Weight 1.5 kg

Basic Features

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● Auto range

● Data hold
● Data recall
● LCD backlight
● Resistance limit alarm
● Low battery indication
● Auto calibration

Tech. Spec

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Specifications Range UT278A+
Certifications CE, RoHS
Category ratings CAT III 300V
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 ±(1.5%+0.5)
100~199Ω ±(2%+1)
200~395Ω ±(5%+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)
Display count EBTN
Jaw opening 32mm
Visual and audible alarm
Auto power off
Jamming signal recognition
Over-range display
Data storage 300
Display type EBTN
Ω+A display
General Characterisitics
Power 1.5V battery (LR6) x 4
Display 47mm x 28.5mm
Product net weight 1.18kg
Product size 285mm x 85mm x 56mm
Standard accessories Batteries, test ring, English manual
Standard individual packing Gift box, tool box
Standard quantity per carton 1pcs
Standard carton measurement 370mm x 110mm x 300mm
Standard carton gross weight 2.6kg

Models & Comparison

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