Clamp Earth Ground Tester UT-276A


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UT-276A 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. UT-276A 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 signals from the environment.


  • Resistance limit alarm
  • Auto range
  • Low battery indication
  • Display count: 4 digits LCD display
  • Jaw opening: 32mm
  • Resistance measurement frequency: >1kHz
  • Single measurement time: 1 second
  • Current limit alarm: 1mA~499mA
  • Current measurement frequency: 50Hz/60Hz
  • Auto power off
  • RS-232
  • Visual and audible alarm
  • Jamming signal recognition
  • Over-range display
  • Data storage: 99


  • Earth Ground Resistance (Ω) 0.01~0.099Ω, 0.1~0.99Ω, 1~49.9Ω, 50~99.5Ω, 100~199Ω, 200~395Ω, 400~590Ω, 600~800Ω, 800~1200Ω
  • Power 1.5V battery (LR6) x 4
  • Display: 47mm x 28.5mm
  • Dimension: 285mm x 85mm x 56mm
  • Additional information
  • Gross weight: 1160 g
  • Manufacturer part number: UT-276A


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