ETCR3700 Equipotential Bonding Resistance Tester

Main Functions

Used to measure the equipotential bounding resistance between metal components and equipotential bounding resistance between grounding grid and grounding pole
Resistance measurement range: 1mΩ~30.0kΩ
Resistance measurement gear: 0.3Ω, 3Ω, 30Ω, 300Ω, 3kΩ, 30kΩ
Test Current: 2A MAX
Alarm function: setting alarm threshold.
Memory: data storage 400 groups
Lithium battery

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Product Introduction
Technical Parameter
Model comparison
Data download

Product Introduction

ETCR3700 Equipotential Bonding Resistance Tester, also known as DC Low Resistance Tester, which is used for measuring the eauipotential bonding resistance in constructions and metal components(lightning belt, grade beam, structure, protection, floor bar, water pipe, radiator, toilet, doors and Windows, balcony, kitchen and other objects), also can measure the contact resistance of circuit breaker, switch and socket contacts as well as a variety of coil resistance, diverter resistance and metal riveting resistors for vehicles, ships and aircraft, resistance of the welding contacts, the parallel connection resistance of storage battery, the contact resistance of the distributor bus(bar) and wire,etc. The instrument is equipped with large capacity lithium battery pack, especially for outdoor construction site to use. lt is widely used in construction quality inspection station, supervision company, construction unit, lightning protection company, electric power department and ship locomotive factory, etc.
ETCR3700 Equipotential Bonding Resistance Tester consists of the host, monitoring software, test leads, chargers, and USB communication wires. The instrument adopt with precision four-wire method for testing, which is accurate and reliable. It also has the functions of alarm function, clock function, and test wire length. The host with large LCD display. backlight, bar graph indication, clear and obvious, it can store 400 groups of data at the same time. The monitoring software has functions such as reading, reviewing, saving, reporting, and printing of historical data.
1.Adopt with precision four-wire measurement is used to make the test more accurate.
2.Resistance measurement gear: 6 gears, 0.3Ω, 3Ω, 30Ω, 300Ω, 3kΩ, 30kΩ
3.Alarm function: setting resistance alarm threshold
4.Clock function
5.Memory: data storage 400 groups
6.USB communication interface

Technical Parameter

1.Measurement Range & Accuracy

Gear	Measurement Range	Accuracy	Solution
0.3Ω	1mΩ~300mΩ	±1%rdg±10dgt	0.1mΩ
3Ω	300mΩ~3000mΩ	±1%rdg±5dgt	1mΩ
30Ω	3.000Ω~30.00Ω		0.01Ω
300Ω	30.0Ω~300.0Ω		0.1Ω
3kΩ	300Ω~3000Ω		1Ω
30kΩ	3.00kΩ~30.00kΩ		0.01kΩ

2.Technical Specifications

Power Supply	DC 7.4V 2600mAh rechargeable lithium battery, battery is fully charged about 8.4V
Display Mode	LCD; size: 128mm×75mm
Test Current	2A MAX
Measurement Method	Precision four-wire method, 2 A/D simultaneous detection
Measurement Range	1mΩ~30.00kΩ
Wire Length Test	L: ≤999999m
Standard Wire Length	Standard wire length setting range: 1m~30m
Test Interface	C1 current positive, C2 current negative, P1 voltage positive, P2 voltage negative
Test Time	2 seconds/time
Memory	400 groups(power down or replace the battery will not lose the data)
Alarm Setting	Alarm threshold setting range: 1Ω~30Ω, 00Ω does not start the alarm function, and the alarm function is not activated every time the machine is turned on.
Test Indication	When the measured value exceeds the alarm set value,“Du-Du-Du-" Alarm prompt
Alarm Prompt	The blue TESTING light flickers during the test
Charging Indication	The indicator light on the charger lights up red when charging, and green when fully charged
Data Hold	Automatically keep displaying the tested result after each test
Clock Function	24-hour clock, showing hours and minutes
Test Line	4 PCS: 2 pieces each in red and black, each line is 5m length
Backlight Function	Controllable gray-white screen backlight, suitable for use in dim place
Line Voltage	Live line measurement should be avoided
Overflow Display	Overrange overflow function: "OL" symbol display
Low Voltage Indication	When the battery voltage drops to DC 7.2V ± 0.1V, the low battery voltage symbol is displayed, remind charging the instrument in time.
USB Communication Interface	with USB interface, software monitoring, data storage can be uploaded to the computer, saved and printed
Host Size	280mm×260mm×160mm
Weight	2270g
Withstand Voltage	AC 3700V/rms (Between the shell and the screw)
Suitable Safety Standard	IEC61010-1, CAT Ⅲ 600V, pollution level 2, JJG724-1991 "DC Digital Ohmmeter Verification Procedures", JJG166-1993 "DC Resistor Verification Procedures", "DL/T967-2005 Loop Resistance tester and DC Resistance Rapid tester Verification Procedures"
Working Temperature & Humidity	-10℃~40℃; below 80%RH
Storage Temperature & Humidity	-10℃~60℃; below 70%RH

Model comparison

Product Picture	Product Model Name	Test Current	Resistance Range	Alarm Function	Line Resistance Verification	USB Communication	Others
	ETCR3700 Equipotential Bonding Resistance Tester	2A	1mΩ~30kΩ	Yes	Yes	Yes
	ETCR3700C Equipotential Bonding Resistance Tester	4A	1mΩ~30kΩ	Yes	Yes	Yes	Watertight Submersible Casing

Data download

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ETCR3700 Equipotential Bonding Resistance Tester

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