ETCR3250 Pylon Earth Resistance Tester

Main Functions

Unbuttoning-free pylon earth resistance measurement, Earth resistance measurement, Soil resistivity measurement, AC current measurement, Earth voltage measurement
Earth resistance measurement range: 0.00Ω~20.00kΩ
Soil resistivity measurement range: 0.00Ωm~9000kΩm
AC current measurement range: AC 1.00mA~500.0A
Earth voltage measurement range: AC 0.0V~200.0V
Clamp jaw size: Φ68mm
Memory: data storage 2000 groups
Alarm function: setting alarm threshold
USB interface
Bluetooth communication
Large capacity lithium battery
Built-in printer

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Product Introduction
Technical Parameter
Model comparison
Data download

Product Introduction

ETCR3250 Pylon Earth Resistance Tester, also known as four-clamp pylon earth resistance tester and pylon earth resistance tester, which is used for measurement of pylon earth resistance, soil resistivity, earth voltage, earth current and AC current. Transmission line pole pylon usually have 2 or 4 down leads. When using grounding pile method or clamp method to measure the earth resistance, need to disconnect the connection between the down lead and the grounding pole, and the measurement work is cumbersome and require large amount of work. This tester adopt with 4-clamp method to measure the earth resistance value of the pylon, not request to unbuckle the measurement. Wireless communication is used between 4 current clamp and the host, and the on-site measurement is fast and safe, which greatly reduce the work intensity of the operator and improve work efficiency.
ETCR3250 Pylon Earth Resistance Tester can also use the two-three-four-wire method to measure earth resistance, soil resistivity, AC current and earth voltage. The tester has unique anti-interference ability and environmental adaptability, and good consistency in repeated test to ensure high precision, high stability and high reliability of long-term measurement. The 4 current clamp of the tester can be used independently as clamp type current tester to measure AC current.
ETCR3250 Pylon Earth Resistance Tester consist of host, 4 current clamps, test line, an auxiliary grounding rod, communication line, a printer, etc. The host with 7-inch color screen and the current clamp adopt with wireless communication, and the tester also has Bluetooth communication. After downloading the APP, can test and view the test result on your mobile phone. The tester is equipped with built-in printer, which can print test result on site.The tester can store 100 sets of data and upload test result through the USB interface and the upper computer software to realize functions such as reading, reviewing, saving, reporting, and printing of historical data. The tester shell adopt with waterproof protection box, which is anti-collision, anti-fall, and waterproof (protection level IP65),strong, safe and durable. The tester is also equipped with a large-capacity rechargeable lithium battery pack, which is especially suitable for use on outdoor construction site.
1. Four-clamp method measure the pylon earth resistance without unbuttoning, which is fast, safe and greatly reduce labor intensity.
2. The current clamp and the host adopt with wireless communication to avoid messy connection line and cumbersome storage at the test site, time-saving and efficient.
3. The two-, three- and four-wire method can be used for measurement of earth resistance, soil resistivity, earth voltage and AC leakage current.
4. The current clamp can be used independently as clamp tester.
5. Alarm function, setting alarm threshold.
6. Memory, 2000 sets of data storage.
7. USB interface, data upload function.
8. Bluetooth communication.
9. Large-capacity lithium battery.
10. Built-in printer

Technical Parameter

1.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
Earth Resistance(R) (4 Clamp Method)	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		0.1Ωm
	1000Ωm~9999Ωm		1Ωm
	10.00kΩm~99.99kΩm	(ρ=2πaRa:1m~100m; π=3.14)	10Ωm
	100.0kΩm~999.9kΩm		100Ωm
	1000kΩm~9000kΩm		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

2.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
Working Current	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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ETCR3250 Pylon Earth Resistance Tester

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