UNI-T UT273+ Clamp Earth Resistance Tester

The UT273+ Clamp Earth Resistance Tester is used for earth resistance test. This meter uses an EBTN screen with a dual display function (the resistance & current displayed). It also has functions such as a real-time clock, data storage, data review, alarm, and automatic shutdown.

The tester is characterized by its aesthetic appearance, wide range, high resolution, easy operation, portability, stable performance, and strong ability to resist interference. It is a good tool for electrical engineers.

Features:

• Earth resistance test (0 ~ 600Ω)
• Current test (0 ~ 20A）
• Large black screen (32mm)
• Large jaw size
• Strong anti-interference
• Alarm function
• Data storage (500 sets)

Specifications	Range	Accuracy
Earth resistance (Ω)	0.010Ω-0.199Ω	±（1%＋0.02Ω）
	0.20Ω-1.99Ω	±（1%＋0.05Ω）
	2.0Ω-49.9Ω	±（1%＋0.5Ω）
	50.0Ω-99.5Ω	±（1.5%＋1Ω）
	100Ω-199Ω	±（2%＋2Ω）
	200Ω-395Ω	±（5%＋5Ω）
	400-590Ω	±（10%＋10Ω）
	590Ω-600Ω	±（20%＋20Ω）
Current (AC)	1.00mA -9.99mA	±（2.5%＋1mA）
	10.0mA -99.9mA	±（2.5%＋5mA）
	100mA -999mA	±（2.5%＋10mA）
	1.00A-9.99A	±（2.5%＋0.2A）
	10.0A-20.0A	±（2.5%＋0.5A）
Features
Jaw size	55mm×32mm
Timer	√
Sample rate	1 time/s
Screen	4 digits EBTN screen
Data transmission	√(USB cable)
Data storage	500 set
Anti-interference	√
Overload protection	√
Alarm function	√
Battery state indication	√
Auto power off	√
Overvoltage category	CAT III 300V, CAT IV 150V
Certificates	ROW
General Characteristics
Standard accessories	User manual, AA alkaline 4pcs, calibration loop, USB cable(data transmission), tool box
Screen size	46mm×36mm
Product dimension	285mm×85mm×58mm(L*W*H)
Product net weight	1180g(batteries included)

Applications:

• Earth resistance measurement in grounding systems.
• Loop resistance testing without disconnecting ground lines.
• Grounding network diagnostics in electrical installations.
• Interference monitoring and alarm-triggered safety checks.

Package Contents:

• 1x UT273+ Clamp Earth Resistance Tester unit
• 4x AA alkaline battery (SV)
• 1x Calibration loop
• 1x USB cable (for data transmission)
• 1x User manual
• 1x Tool box (packaging)
• 1x Gift box

Documents:

• Datasheet
• User Manual