UT278A Clamp on Ground Resistance Tester Leakage Current Tester

UT278A is a 1200Ω auto range clamp earth ground tester of resistance and 30A leakage current with 1s single measuring time and current limit alarm. UT270 series 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. UT275 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

1. 10000 display count

2. 0.001Ω resolution

3. Auto range

4. Data hold

5. Resistance limit alarm

6. Auto calibration

7. Auto power off

8. LCD backlight

Specifications	Range	Accuracy
Model		UT278A
Earth Ground Resistance (Ω)	0.01Ω-0.099Ω	±(1%+0.01)
	0.1Ω-0.99Ω	±(1%+0.01)
	1.0Ω-49.9Ω	±(1%+0.1)
	50Ω-99.5Ω	±(2%+0.5)
	100Ω-199Ω	±(3%+1)
	200Ω-395Ω	±(6%+5)
	400Ω-590Ω	±(10%+10)
	600Ω-800Ω	±(20%+20)
	800Ω-1200Ω	±(25%+30)
Leakage Current (A)	0mA-9mA	±(2.5%+1)
	10mA-99mA	±(2.5%+5)
	100mA-299mA	±(2.5%+10)
	0.30A-2.99A	±(2.5%+0.1)
	3.0A-9.9A	±(2.5%+0.3)
	10.0A-20.0A	±(2.5%+0.5)
	3A-30A	±(2.5%+0.5)
Features
Display Count	4 bit LCD digital display	√
Auto Range		√
Jaw Capacity		32mm
Single Measure Time	1s	√
Resistance Measurement Frequency	＞1kHz	√
Current Measurement Frequency	50Hz/60Hz	√
Resistance Limit Alarm	1Ω-199Ω	√
Current Limit Alarm	1mA-499mA	√
RS-232		√
Beeper and Light Alarm		√
Jamming Signal Recognition		√
Over-Range Display		√
Low Battery Indication		√
Data Logging		99
General Characteristics
Power	1.5V Alkaline Battery (5#) X4
LCD Size	47mm X 28.5mm
Product Color	Red and grey
Product Weight	1160g
Product Size	285mm X 85mm X 56mm
Standard Accessories	Batteries, Test Ring, Tool Box
Standard Individual Packing	Gift Box, User Manual
Standard Quantity Per Carton	6pcs
Standard Carton Measurement	610mm X 375mm X 320mm
Standard Carton Gross Weight	25kg
Optional Accessories	RS232 Interface Cable, PC Software CD

Include：

Test Ring, Tool Box

General
Batteries Inside	None
Characteristic	10000 display count; Resistance limit alarm
Function	Earth Ground Resistance; Leakage Current; RS-232; Beeper and Light Alarm;
Original	Shennan
Packing List	Test Ring, Tool Box
Size	285mm * 85mm * 56mm