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ES3070 Portable DC Resistance Tester

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mainly used for measurement of transformer dc resistance, transformer winding resistance, network connectivity, cable conductor resistance, contact resistance of switches, connectors, relays, winding, motor, transformer winding resistance and metal riveting resistance, metal component coupling between resistance test, low resistance testing, contact resistance testing, etc.

Resistance range


Resolution ratio

0.1 uΩ



Detection method

The four-wire test

Measuring current


Maximum short circuit current 


overload protection


Self discharge



DC12.6v 2500mAh large-capacity lithium battery

Charging function


Back light

Yes, suitable for dark places

Display mode

LCD Full-color display

Overflow shows

The “OL” symbol is displayed when the overrange overflow occurs

Touch screen operation


The LCD size

Length and width: 108mm×65mm

Size of instrument

Length, width and height: 240mm×188mm×85mm

The test line length

5 meters, 1 red, 1 black

USB interface

With USB interface

Line of communication

1 USB communication cable

Data storage

500 groups

View Data

Data access function

Cell voltage

The battery power is displayed in real time, indicating that the battery should be charged in time when the battery voltage is low

Auto power-off

Turn off the meter after no operation for about 15 minutes

Power dissipation

Standby: approx. 116mA (20% brightness)


Measurement: 27W Max


Instrument: 1100g(including batteries)


Test line: 850g

Operating temperature and humidity

– 10℃~40℃,Below 70%rh

Storage temperature and humidity

-20℃~60℃,Below 70%rh

Insulation resistance

More than 10 m Ω (circuit between the shell and 500 V)

Withstand voltage

AC 3700V/ RMS (between circuit and housing)

Electromagnetic property

IEC61010-4-3, wireless frequency electromagnetic field ≤1V/m

Suitable for safety

IEC61010-1、CAT Ⅲ 600V、Pollution level 2、JJG724-1991 <<VERIFICATION Regulation of DC Digital Ohmmeter>>, JJG166-1993 <<Verification Regulation of DC Resistor>>, <<VERIFICATION Regulation of DL/T967-2005 Circuit Resistance Tester and DC Resistance Rapid Tester>>

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