Description

UT-278A Clamp Earth Ground Tester 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-278A 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.

FEATURES

Resistance limit alarm
2. Auto range
3. 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

SPECIFICATION

Earth Ground Resistance: 0.01~0.099Ω, 0.1~0.99Ω, 1~49.9Ω, 50~99.5Ω, 100~199Ω, 200~395Ω, 400~590Ω, 600~800Ω, 800~1200Ω
Leakage current: 0mA~9mA, 10mA~99mA, 100mA~299mA, 0.3A~2.99A, 3A~9.9A, 10A~20A, 3A~30A
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-278A