Function

Range

Accuracy

Resolution

Earth Ground Resistance

(0.01~20)Ω

±1%rdg±3dgt

(Assistant Earth Resistance100Ω±5%, Turn-ground voltage<10V)

0.01Ω

(0.1~200)Ω

0.1Ω

(1~2000)Ω

1Ω

Earth Voltage

(0~600)V AC

±1%rdg±3dgt

1V

Model

ETCR3000

Function

Earth resistance measurement, Earth voltage measurement, Low resistance measurement

Power Supply

DC 9V (Zi-Mn dry battery R14S 1.5V 6 PCS, continuous standby for 300 hours )

Measuring Mode

Precise 3-pole measurement, simple 2-pole measurement

Measuring Method

Earth ground resistance: constant current change-pole method, measurement current 3mA Max,820Hz;

Voltage to ground: average value rectification

Data Mode

Average value, maximum, minimum

Wire Resistance Verification

Avoid error caused by testing wire such as failed to be fully inserted into tester interface or by poor contact or by user's replacing or lengthening testing wires, making it more accurate for earth ground resistance measurement.

Display Mode

4-digital super-large LCD display, blue screen backlight, LCD dimension: 128mm×75mm; Display field:124mm×67mm

Measuring Indication

During measurement, LED flash indicator, LCD count down display

Earth Ground Resistance 

Range:0.01Ω~2000Ω; Resolution:0.01Ω; Accuracy:±1%rdg±3dgt

Earth Ground Voltage 

Range:0V~600V AC; Resolution:1V;  Accuracy:±1%rdg±3dgt

Tester Dimension

LWH:215mm×190mm×95mm

Testing Wires

Three wires: each for Red 20m, Yellow 10m, and Green 5m

Simple Testing Wire

2 wires: each for Red 1.6m and Green 1.6m

Auxiliary Earthing Rod

2 PCS: Φ10mm×150mm

Measuring Rate

Earth voltage measurement: 3 times/second; Earth resistance: 5 seconds/time

Measuring Times

Over 5000 times (20Ω range measuring 10Ω for one time and repeat after 25 seconds)

Circuit Voltage

Measuring voltage to ground: measuring below AC 600V

RS232 Interface

Possess RS232 interface, software supervision, storage data can be uploaded to computer, preserved and printed.

Communication Wire

One piece of RS232 communication wire, with length 1.5m

Data Storage

400 sets, flash display "FULL"icon to indicate storage is full

Data Hold

Data hold function:"HOLD"icon display

Data Read

Data read function: "READ" icon display

Overflow Display

Exceeding measuring range overflow function: "OL"icon display

Alarm Function

When measuring value exceeds alarm setting value, there is "Toot-toot-toot"alarm hint

BatteryVoltage

When battery voltage decreases to about 7.8V, battery voltage low icon " "will display, reminding to replace battery.

Power Consumption

Backlight:25mA Max; Standby: 25mA Max(Backlight shut off);Measurement:70mA Max(Backlight shut off)

Weight

1443g(with batteries)

Working Temperature & Humidity

-10°c~40°c;below 80%rh

Storage Temperature & Humidity

-20°c~60°c;below 70%rh

Overload Protection

Measuring earth ground resistance: between each interfaces of E-P,E-C, AC 280V/3 seconds

Insulation Resistance

Over 10MΩ(between circuit and enclosure it is 500V)

Withstanding Voltage

AC 3700V/rms (Between circuit and enclosure)

Electromagnetic Features

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

Protection Type

IEC61010-1,IEC1010-2-31,IEC61557-1,5,IEC60529(IP54),CAT III 300V

Pollution etc.

Accessories

Tester:1PC; Earthing Rod:2PCS;  Testing Wire:3PCS; Simple testing wire:2PCS;

RS232 Com-cable:1PC; Software disk:1PC; Tester bag:1PC