ETCR3200C Double Clamp Multi-function Earth Resistance Tester - ETCR

ETCR3200C Double Clamp Multi-function Earth Resistance Tester

Product Characteristics

1:2/3/4-wire method measure earth resistance,Range:0.00Ω~30.00kΩ

2:Selection method meausre earth resistance, Range: 0.00Ω~3000Ω

3:Doule clamp method measure earth resistance,Range: 0.01~100Ω

4:Soil resistivity measurement, Range:0.00Ωm~9000kΩm

5:Earth voltage measurement,Range:AC 0~600V

6:AC current measurement, Range: 0.01mA~600A

7:Data storage: 2000 sets

8:Alarm function: audible and visual alarm

9:CT size: Φ68mm

10:Waterproof case + Super large capacity lithium battery

ETCR3200C Double Clamp Multi-function Grounding  Resistance Tester is specially designed and manufactured for on-site measurement of grounding resistance, soil resistivity, grounding voltage, grounding line leakage current, AC current and DC resistance. Apply digital processing technology, precision 4-wire method, 3-wire method and simple 2-wire method, selection method, double-clamp method to measure grounding resistance; Large caliber clamp design can measure the grounding system which using large grounding down lead, and can flexibly and accurately measure any grounding resistance value of various complex grounding conditions such as single point and mesh grounding. It is not necessary to disconnect any parallel grounding pole to measurement, maximize the convenience of measurement. Import FFT (Fast Fourier Transform) technology, AFC (Automatic Frequency Control) technology, with unique anti-interference ability and environmental adaptability, high repeated test consistency, ensuring high precision, high stability and high reliability for long-term measurement. The tester case is made of waterproof protection box, anti-collision, anti-drop, waterproof (protection grade IP65), strong and durable, and also equipped with a large-capacity rechargeable lithium battery pack, especially suitable for outdoor construction. Widely used in power, telecommunications, meteorology, oil fields, construction, lightning protection and industrial electrical equipment, such as grounding resistance, soil resistivity, grounding voltage, alternating current, leakage current measurement.

Reference Conditions And Working Conditions

 Influence Constant

 Base Condition

Working Conditions


 Ambient Temp




 Ambient Humidity




 Working Voltage




 Auxiliary Earth Resistance Value


<5 kΩ



 Should Avoid




 Should Avoid



 Electrode Distance of measuring R 




 Electrode Distance of  measuring ρ 




Technical Specifications

Function Measure grounding resistance, soil resistivity; DC resistance, earth voltage, AC current , leakage current
Power Supply DC 8.4V (rechargeable battery, continues standby 300 hours)
Backlight Controllable screen backlight, suitable for dim places
Measuring Mode Precise4-pole measurement, 3-pole measurement, simple 2-pole measurement, selection method, double clamp method measure grounding resistance
Measuring Method 2/3/4 pole measurement method: Change-pole method, measurement current 20mA Max
Selection measurement method: Change-pole method, measurement current 20mA Max
Double clamp measurement method: Non-connect mutual inductance method, measurement current 1mA Max
Soil Resistivity: 4-pole measurement (Wenner method)
DC resistance: Change-pole method
AC current: Mutual inductance method(clamp)
Earth Voltage: Average rectification(between P(S)-ES)
Test Voltage Wave Sine wave
Test Frequency 128Hz/111Hz/105Hz/94Hz(AFC)
Short-circuit Test Current AC 20mA max
Open-circuit Test Current AC 40V max
Electrode Distance Range 1m-100m
Display Mode 4-digital large LCD display, with screen backlight
Measuring Indicator During measurement, LED flash indicator, LCD countdown display
LCD Frame Dimension 128mm×75mm
LCD display area 124mm×67mm
Instrument Dimension 280mm(L)×260mm(W)×160mm(H)
CT Size 185mm(L)X115mm(W)X43mm(H)
Test Wire 4 wires: each for red 20m, black 20m, yellow 10m, and green 10m
Simple Test Wire 2 wires: each for red 1.6m and black 1.6m
Auxiliary Grounding Rod 4PCS: Φ10mm×150mm
Current Clamp 2PCS :1 blue-black plug and 1 red-black plug
Clamp Caliber Φ68mm
Clamp Turn Ratio 1000:1
Clamp Lead Wire 2m
Measuring Rate AC current: about 2 times/second
Earth Voltage: about 2 times/second
Earth resistance: about 7 seconds/time
Measuring Times Over 5000 times (Short-circuit test, interval time should be at least 30seconds)
Line Voltage Measurement below AC 600V
Communication Interface USB interface, storage data can be uploaded to computer, saved or printed.
Communication Wire USB communication wire x1pcs, with length 1.5m
Data Hold Data hold function: “HOLD” symbol display
Data Storage 2000 groups, “MEM” storage indicator, “FULL” symbol flash display storage is full
Data Access Data read function: “READ” symbol display
Overflow Display Exceed measuring range overflow function: “OL” symbol display
Low Current Indicator of Current clamp Measurement with select method or double clamp , the current signal received by CT2 is lower than 0.5mA, will display“   “, and should check the clamping direction of the CT2 current clamp
Interference Test Automatic identification of interference signals, “NOISE” symbol indication when the interference voltage is higher than 5V
Auxiliary Grounding Test With auxiliary grounding resistance test function, 0.00KΩ-30kΩ(100R+rC<50kΩ, 100R+rP<50kΩ)
Alarm Function  Measurement value exceeds alarm setting value, will "Toot-toot-toot" alarm hint
Battery Voltage While battery voltage decreases to around 7.2V±0.1V, will display battery voltage low symbol“     ”, and reminding to replace the battery
Auto-shut off Automatically shut down after 15 minutes of power on
Power Consumption Backlight: 25mA Max(only backlight power consumption)
Standby:25mA Max(Backlight off after power on)
Measurement:150mA Max(Backlight shut off)
Weight Tester: 2.23kg
Tester package: 0.915kg
Current Clamp:1.05kg(2pcs)
Test wires: 1.56kg(include the simple test wires)
Auxiliary grounding rods: 0.935kg(4pcs)
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 20MΩ(between circuit and outside shell is 500V)
Withstanding Voltage AC 3700V/rms. (Between circuit and outside shell)
Electromagnetic Features IEC61326(EMC)
Protection Type IEC61010-1(CAT Ⅲ 300V、CAT IV 150V、Pollution 2);
IEC61557-1(Earth resistance);
IEC61557-5(Soil resistivity);
JJG 366-2004(Grounding resistance meter)
JJG 1054-2009(Clamp grounding resistance meter)

Intrinsic error and performance indicators under base conditions

 Measurement Function

 Measurement Range

Intrinsic Error


 2/3/4 pole method measure earth resistance(Re)    DC resistance(R--)












 Selection method measure grounding resistance(Re)









 Double clamp method measure grounding resistance(Re)







 Soil Resistivity



Accuracy:According to the precision ofR

(ρ=2πaR, a:1 m-100m,π=3.14)












 Earth Voltage(50Hz/60Hz)

 AC 0.0-100V







Note:1.rC max or rPmax: additive error≤±5%rdg±5dgt

(rC max: 4kΩ+100R<50kΩ, rP max: 4kΩ+100R<50kΩ)

when interference by 2.5V voltage, the additive error ≤±5%rdg±5dgt


Earth Resistance 


Selection Method 

Measure Resistance


Double Clamp 

Method Measure 



Soil Resistivity


Earth Voltage


AC Current


Data Storage


ETCR3000 0.01~2000 None None None 0~600 None 400 Normal type
ETCR3000C 0.01~2000 None None None 0~600 None 400 Waterproof protective shell
ETCR3000B 0.01~30000 None None 0.00~9000k 0~600 None 300 Normal type
ETCR3100C 0.01~30000 None None 0.00~9000k 0~600 None 300 Waterproof protective shell
ETCR3200 0.01~30000 0.01~3000 0.01~100 0.00~9000k 0.0~100.0 0.00mA~600A 2000 Normal type
ETCR3200C 0.01~30000 0.01~3000 0.01~100 0.00~9000k 0.0~100.0 0.00mA~600A 2000 Waterproof protective shell

  Meter  1 PCS
 Meter Bag  1 PCS
  Auxiliary Grounding Rod  4 PCS
 Test Wires 4PCS (Red 20m; Yellow: 10m; Green: 10m; Black:20m)
 Simple Test Wires 2 PCS (Red 1.6m; Black 1.6m)
 Current Clamp 2 PCS
  Monitoring sortware CD  1 COPY
  USB Communication Cable  1 PCS
  Special Charger  1 PCS
  Manul/Warranty Card/Certificate  1 SET

ETCR3200C Catalog