UT278A+ Clamp Earth Ground Tester

Feature:

Non-Disruptive Measurement: Measures grounding systems without disconnecting circuits.
Resistance Measurement: Range from 0.01Ω with 0.001Ω resolution.
Certificates: CE, UKCA for compliance with safety and quality standards.
Auto Range: Automatically selects the appropriate measurement range for enhanced convenience.
Data Hold: Freezes and retains the displayed measurement for easy recording.
Data Recall: Allows retrieval of previously measured data for reference.
LCD Backlight: Illuminates the display for improved visibility in low-light conditions.
Resistance Limit Alarm: Alerts users when the measured resistance exceeds a preset limit.
Low Battery Indication: Provides a warning when the battery is running low for timely replacement.
Auto Calibration: Automatically calibrates to ensure accurate and reliable measurements

Quantity

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)
	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