ETCR ETCR3250 鉄塔型地面抵抗計 (9000kΩm, 500AAC, 200VAC)

Basic Error & Performance Indicator Under Reference Condition

Measurement Function 

Measuring Range/Accuracy/Resolution

Earth Resistance(R) (4 Clamp Method)

0.10Ω~20.00Ω/±10%rdg±5dgt/0.01Ω

20.0Ω~200.0Ω/±10%rdg±5dgt/0.1Ω

Earth Resistance(R)

0.10Ω~20.00Ω/±2%rdg±3dgt/0.01Ω

20.0Ω~200.0Ω/±2%rdg±3dgt/0.1Ω

200Ω~2000Ω/±2%rdg±3dgt/1Ω

2.00kΩ~20.00kΩ/±4%rdg±3dgt/10Ω

Soil Resistivity (ρ)

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

100.0Ωm~999.9Ωm/ (ρ=2πaRa:1m~100m; π=3.14) /0.1Ωm

1000Ωm~9999Ωm/ (ρ=2πaRa:1m~100m; π=3.14) /1Ωm

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

100.0kΩm~999.9kΩm/ (ρ=2πaRa:1m~100m; π=3.14) /100Ωm

1000kΩm~9000kΩm/ (ρ=2πaRa:1m~100m; π=3.14) /1kΩm

Earth Current(A~)

1.00mA~50.00mA/±2%rdg±3dgt/0.01mA

0.50A~5.000A/±2%rdg±3dgt/0.001A

5.0A~500.0A/±3%rdg±3dgt/0.1A

Earth Voltage(V~)

0.0V~200.0V/±2%rdg±3dgt/0.1V

General Specification

Power Supply: DC 7.4V 5200mAh rechargeable lithium battery, the battery is fully charged about 8.4V

Display Mode: 7 inches color LCD

Measurement Instruction: LED flash during the measurement

LCD Size: 151mm×83mm

Measurement Range

Four clamp method to measure earth resistance: 200Ω

Earth resistance: 0.00Ω~20.00kΩ

Soil resistivity: 0.00Ωm~9000kΩm

Measurement: Four clamp measurement method, Precision four, three-wire measurement method, simple two-wire measurement method to measure earth resistance, AC current, earth voltage

Measuring Method: Pylon earth resistance: Four clamp measurement method

Earth resistance: rated current pole-change method, measuring current 55mA Max

Soil resistivity: Quadrupole method(Wenner)

AC current: clamp type CT, effective value acquisition

Earth voltage: component voltage, effective value acquisition

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

Short Circuit Test Current: AC 55mA max

Open Circuit Test  Voltage: AC 15V max

Test Voltage Waveform: Sine wave

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

Gear Shift

Four clamp measurement method to measure earth resistance: 200Ω fully automatic gear shift

Earth resistance: 0.00Ω~20.00kΩ fully automatic gear shift

Soil resistivity: 0.00Ωm~9000kΩm fully automatic gear shift

AC current(single CT): 1.00mA~500A fully automatic gear shift

Earth voltage: 0.0V~200.0V

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

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

Auxiliary Ground Rod: 4 PCS: φ9mm×230mm(about 935g)

Measurement Time: Earth resistance, soil resistivity: about 30 seconds/time

Line Voltage: Measurement below AC 600V

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

Printer: Built in

Memory: 100 groups, “001/100” storage instruction，"100/100" indicates that the storage is full

Overflow Display: When over-range overflow "OL" symbol display

Auxiliary Ground Test: With auxiliary grounding resistance value test function, 0.00kΩ~20kΩ(100R+rC<20kΩ，100R+rP<20kΩ)

Alarm Function: When the measured value exceed the alarm set value, the ”siren" alarm symbol prompt

Alarm Threshold Setting Range: Resistance: 0Ω~2000Ω, voltage: 0V~200V, current: 0A~600mA

Automatic Shutdown: Start up 30 minutes without any operation, and then automatic shutdown

Battery Voltage: When the battery voltage drop to about DC 7.2V±0.1V, the low battery voltage symbol indicate to remind that the tester need to be charged.

Working Current

Standby: about 400mA

Measurement: about 550mA

Caliber Of Current Clamp: Φ68mm

Tester Size: 355mm×272mm×164mm

Weight

Tester: about 2765g(include battery)

Current clamp: about 500g×4 PCS

Total weight: about 9000g (include accessory)

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

Protection Level: IP65 (cover closed)

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 Standard: 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

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