UNI-T Clamp Earth Ground Tester, 800A, 20A, 32mm, audible and visual alarm, Auto power off, LCD EBTN, (UT278A+)

UT270+ Series Clamp Earth Ground Testers

The UT270+ series 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 environmental interference.

Models in UT270 series: UT276A+, UT278A+

Features of UT270+ Series Clamp Earth Ground Testers

Certificates: CE, UKCA

● Auto range

● Data hold

● Data recall

● LCD backlight

● Resistance limit alarm

● Low battery indication

● Auto calibration

Specifications of UT270+ Series Clamp Earth Ground Testers









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)









600~1000Ω













800~1200Ω







±(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













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