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UNI-T UT278A+ Clamp Earth Ground Testers

UNI-T UT278A+ Clamp Earth Ground Testers

The Clamp Earth Ground Tester series eliminates the requirement for additional electrodes or the necessity to separate circuit ground connections in order to test the grounding system fast and safely. It has a 0.001Ω resolution and can detect resistance starting at 0.01Ω. Because of their double insulation construction, these clamps are strong instruments for outdoor work and efficient in preventing environmental interference.
The double insulating construction of these clamps makes them strong instruments for working outside and efficient at preventing environmental influence.

the UT276A+ and UT278A+ models in the Clamp Earth Ground Tester series
Regular price £265.99
Regular price Sale price £265.99
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Price with tax: £319.19

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● Auto range

● Data hold

● Data recall

● LCD backlight

● Resistance limit alarm

● Low battery indication

● Auto calibration

● Certificates: CE, UKCA

specification & comparison


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 ±(1.5%+0.5) ±(1.5%+0.5)
100~199Ω ±(2%+1) ±(2%+1)
200~395Ω ±(5%+5) ±(5%+5)
400~590Ω ±(10%+10) ±(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   4 digits LCD display
Jaw opening   32mm 32mm
Visual and audible alarm  
Auto power off  
Jamming signal recognition  
Over-range display  
Data storage   300 300
Display type   EBTN EBTN
Ω+A display    
General Characteristics
Power 1.5V battery (LR6) x 4
Display 47mm x 28.5mm
Product net weight 1.18kg
Product size UT276A+/278A+: 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 UT276A+/278A+: 2.6kg