Power Supply

DC 9V Alkaline dry cell LR14 1.5VX6pcs

Backlight

Controllable screen backlight, suitable for dim places

Measuring Mode

Precision 3-wire measurement, simple 2-wire measurement

Measuring Method

Earth Resistance: rated current change-pole method, measurement current 20mA Max

Earth Voltage: Average rectification

Test Frequency

128 Hz

Test Current

>20mA (sine wave)

Data Mode

average value, maximum value, minimum value

Wire Resistance Verification

To avoid errors caused by incomplete insertion of test wire into instrument interface or poor contact or replacement of extended test wire by users, so as to make the grounding resistance measurement more accurate

Display Mode

4-digital super-large LCD display, white screen backlight

Measure Indicator

LED flash indicator and LCD count down display in measurement

LCD Dimension

128mm×75mm; display area:124mmX67mm

Meter Dimension

215mm(L)×178mm(W)×83mm(H)

Test Wires

3 wires: each for red 15m, yellow 10m, and green 5m

Simple Test Wire

Red 1.6m

Auxiliary Grounding Rod

2PCS: Φ10mm×250mm 

Measuring Rate

Earth Voltage: about 3 times/second; Earth resistance: about 15 seconds/time

Measuring Times

Over 5000 times (20Ω gear measure 10Ω, interval time should be at least 30 seconds)

Line Voltage

Measurement of earth voltage: below AC 600V

Data Storage

400 sets, “FULL” symbol flash display storage is full

Data Hold

Data hold function: “HOLD” symbol display

Data Access

Data read function: “READ” symbol display

Overflow Display

Exceed measuring range overflow function: “OL” symbol display

Alarm Function

Measuring value exceeds alarm setting value, LCD flashes display alarm symbol

Battery Voltage

While battery voltage decreases to around 7.8V, will display battery voltage low symbol“    ”, and remind to charging the battery

Power Consumption

Backlight: 25mA Max

Standby: 25mA Max(Backlight shut down )

Measurement: 200mA Max(Backlight shut off)

Weight

Tester: 1.325kg

Test wires: 0.847kg(include the simple test wires)

Auxiliary Grounding Rod:0.468kg(2pcs)

Tester package: 0.915kg

Working Temperature & Humidity

-10℃-40℃, below 80%rh

Storage temperature & humidity

-20℃-60℃, below 70%rh

Protection Level

IP65(close the case)

Overload Protection

Measure earth resistance: between each interfaces of C(H)-E、P(S)-ES, AC 280V/3 seconds 

Insulation Resistance

Over 10MΩ (between circuit and outside shell is 500V)

Withstanding Voltage

AC 3700V/rms. (Between circuit and outside shell)

Electromagnetic Features

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

Protection Type

IEC61010-1 (CAT Ⅲ 300V、CAT IV 150V、Pollution 2);

IEC61010-031;

IEC61557-1 (Earth resistance);