ETCR ETCR3000B 地面抵抗/土壌抵抗計 (0.00Ω~30.00kΩ, 0.00Ωm~9000kΩm, 0~600V)

Basic error and performance indicator under reference condition

Measurement Function

Measuring range/Accuracy/Resolution

Earth Resistance(R)

0.00Ω~30.00Ω/±2%rdg±3dgt/0.01Ω

30.0Ω~300.0Ω/±2%rdg±3dgt/0.1Ω

300Ω~3000Ω/±2%rdg±3dgt/1Ω

3.00kΩ~30.00kΩ/±4%rdg±3dgt/10Ω

Soil Resistivity (ρ)

0.00Ωm~99.99Ωm/(ρ=2πaRa:1 m～100m;π=3.14)/0.01Ωm

100.0Ωm~999.9Ωm/ /0.1Ωm

1000Ωm~9999Ωm/ /1Ωm

Soil Resistivity (ρ)

10.00kΩm~99.99kΩm/(ρ=2πaRa:1 m～100m;π=3.14)/10Ωm

100.0kΩm~999.9kΩm/ /100Ωm

1000kΩm~9000kΩm/ /1kΩm

Earth Voltage

AC 0.0~600V/±2%rdg±3dgt/0.1V

General Specifications

Power Supply: DC 9V (alkaline dry battery LR14 1.5V 6 sections)

Display Mode: 4-digit max LCD display, white screen backlight

Measurement Instruction: The LED flash during the measurement, the LCD count backward, and the progress bar chart indicate

LCD Display Domain: 124mm×67mm

Backlight: Controllable white screen backlight, suitable for use in dim place

Measurement Range

Earth resistance: 0.00Ω~30.00kΩ

Soil Resistivity: 0.00Ωm~9000kΩm

Earth Voltage: 0V~600V

Measurement: Precision four, three-wire measurement, simple two-wire measurement method to measure earth resistance

Measuring Method

Earth resistance: rated current transformer method, measuring current 20mA Max

Soil resistivity: quadru pole method (Wenner method)

Earth voltage: average rectification (between P(S)-ES interface)

Test Frequency: 128Hz/111Hz/105Hz/94Hz(AFC)

Test Current: ＞20mA(Sine wave)

Open Circuit Test Voltage: AC 40V max

Test Voltage Waveform: Sine wave

Electrode Spacing Range: Range can be set 1m~100m

Measurement Range Gear Shift

Earth Resistance: 0.00Ω~30.00kΩ Fully automatic shifting

Soil Resistivity: 0.00Ωm~9000kΩm Fully automatic shifting

Standard Test Line: 4 pieces: red 20m, black 20m, yellow 10m, green 10m each 1 piece

Simple Test Line: 2 pieces: red 1.6m, black 1.6m each 1 piece

Auxiliary Earth Rod: 4 pieces:φ9mm×230mm

Measurement Time

Earth voltage: about 3 times/second

Earth resistance, soil resistivity: about 15 seconds/time

Number of measurement: More than 5000 times (short circuit test, test once, stop for 30 seconds and then test)

Line Voltage: Measurement below AC 600V

Communication Interface: With USB interface, software monitoring, storage data can be uploaded to the computer, saved and printed

Memory: 300 groups, flashing "FULL”symbol indicates that the storage is full

Data Hold: Data holding function: “HOLD" symbol display

Data Access: Data access function: “READ" symbol display

Overflow Display: Over-range overflow function: “OL" symbol display

Interference Test: Automatically identify the interference signal, and the “NOISE” symbol indicates when the interference voltage is higher than 5V

Auxiliary Earth Test: With auxiliary earth resistance value test function,0.00KΩ~30kΩ(100R+rC<50kΩ,100R+rP<50kΩ)

Alarm Function: When the measured value exceed the alarm set value,“Du-Du-Du-" Alarm prompt

Alarm Threshold Setting Range: Resistance:0Ω~9999Ω,voltage:0.0V~600.0V

Battery Voltage: When the battery voltage drop to about 7.5V, the low battery voltage symbol flashes to remind you to replace the battery.

Working Current

Standby: about 20mA (backlight off)

Power on when turn on backlight: about 45mA (turn off the backlight 25mA)

Measurement: about 100mA (backlight off)

Tester Size: 215mm×178mm×83mm

Weight

Tester: About 1330g; total weight: about 4.5kg (include packaging)

Overload Protection: Measuring earth resistance: AC 280V/3 seconds between C(H)-E,P(S)-ES ports

Insulation Resistance: Above 20MΩ(500V between the circuit and the housing)

Withstand Voltage: AC 3700V/rms(between circuit and housing)

Electromagnetic Characteristics: IEC61326(EMC)

Suitable Safety Regulation: IEC61010-1(CAT Ⅲ 300V、CAT IV 150V、pollution level 2);IEC61010-031;IEC61557-1(Earth resistance);IEC61557-5(Soil resistivity);JJG 366-2004

Working Temperature & Humidity: -10℃~40℃; below 80%RH

Storage Temperature & Humidity: -20℃~60℃; below 70%RH