ETCR3000 Digital Earth Resistance Tester-ETCR

ETCR3000 Digital Earth Resistance Tester

Product Main Function

1. Earth resistance measurement, Range: 0.010Ω~2000Ω

2. Resolution: 0.01Ω

3. Accuracy: ±2%rdg±3dgt

4. Earth voltage measurement,Range: AC 0~600V

5. Resolution:1V

6. Data storage: 400 sets

7. Alarm function: audible and visual alarm

ETCR3000 DigitalEarth Resistance Tester specially designed and manufactured for the field measurement of ground resistance, adopts digital and micro-processing technology, 3 wire or 2 wire method to measure ground resistance, with unique calibration function for wire resistance, anti-interference ability and environmental adaptability, to ensure the long-term measurement of high precision, high stability and reliability; The instrument out shell adopts waterproof protection case, anti-collision, anti-fall, waterproof (protection grade IP65),which is strong, safe and durable, the instrument is also equipped with large capacity rechargeable lithium battery pack, especially suitable for outdoor construction site to use.It is widely used in measuring ground resistance of electric power, telecommunication, meteorology, oil field, construction, lightning protection and industrial electrical equipment.

ETCR3000 DigitalEarth Resistance Tester has the unique function of wire resistance calibration, and it is more accurate to measure the low value ground resistance in the field, which can avoid the error caused by the change of wire resistance in the test line for a long time usage.It can avoid errors caused by incomplete insertion of test line into instrument interface or bad contact.It can avoid the error caused by the user to change or lengthen the test line..

ETCR3000 Digital Grounding Resistance Tester is composed of host machine, monitoring software, test wires, communication wires etc. The large LCD display of host machine, with white backlight and bar graph indicating that can be seen clearly. At the same time it can store 400 sets of data, realize historical inquiry and online real-time monitoring by monitoring software, dynamic display, with the indicator of max/min/average value, and with alarm value setting and  alarm indicator functions, and with the functions as historical data access, reading, preservation, report forms, printing and so on.

Measurement Range and Accuracy

Measurement Function Range Accuracy Resolution
Earth Resistance 0.01Ω~20Ω ±2%rdg±3dgt 0.01Ω
0.1Ω~200Ω (Auxiliary grounding resistance 100Ω±5%, Votage to ground<10V) 0.1Ω
Earth Voltage 0~600V AC ±2%rdg±3dgt 1V


Technical Specifications

 Function  Measurement of earth resistance, voltage to earth
 Power Supply  DC 9V Alkaline dry cell LR14 1.5VX6pcs, continues working 300 hours
 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 500Hz
 Short Circuit Test Current AC 10mA max
 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×150mm 
 Measuring Rate Earth Voltage: about 3 times/second; Earth resistance: about 5 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 7.2V±0.1V, 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);
 IEC61557-1 (Earth resistance);


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

 Package  Outer package  Carton
 Inner package  Fabric Bag
 Accessory  Meter  1 PCS
 Cloth  Bags  1 PCS
 Auxiliary grounding rod  2 PCS
 Test Wires  4 PCS
 Simple Test Wires  2 PCS
 Manual/Warranty Card/Certificate  1 PCS

ETCR3000 Catalog