ETCR2800E Small Caliber Earth Resistance Online Detector

Main Functions

On-line monitoring the connection status of the loop earth resistance, metal loop connection resistance and grounding down lead in the loop grounding system,Metal Cable Anti-theft Monitoring
Perforation Size: Φ17mm
Resistance Range: 0.010Ω~100Ω
Communication Mode: RS485 communication,4G communication
Alarm Function: Setting alarm threshold
Explosion Proof Mark: ExiaⅡBT3Ga

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Product Introduction
Technical Parameter
Model comparison
Data download

Product Introduction

ETCR2800E Earth Resistance On-line Detector, also known as the small caliber earth resistance remote on-line tester, non-contact type earth resistance on-line detector, loop resistance on-line detector, which is used for on-line monitoring the connection status of loop earth resistance, metal loop connection resistance, grounding down lead and Metal Cable Anti-theft Monitoring online. The detector is suitable for power transmission line pylon grounding, meteorological lightning protection grounding, petrochemical grounding, communication grounding, distribution station grounding, railway facility grounding, construction warehouse grounding, metal loop connection resistance, electrical equipment grounding, etc.
ETCR2800E adopt with non-contact type measurement technology, not request the auxiliary grounding pole, and the grounding wire passes through the core, do not affect the lightning protection grounding effect and the device normal working. The split core structure not request to disconnect the grounding down lead during installation, convenient and fast. The alarm threshold value can be set through the button of the detector panel, and the detector with sound and light alarm indication, the monitor with RS485 communication or 4G communication. Users can set up the wired network system or wireless network system to realize remote on-line monitoring the grounding system. ETCR2800E is a small-caliber sensor with a small size and light weight, which is suitable for installation in places with small space.
ETCR2800E Earth Resistance On-line Detector pass the explosion proof certification, and the safety and explosion proof certification parameters meet the relevant requirements of GB/T3836.1-2021 and GB/T 3836.4-2021 standards.The explosion proof mark is ExiaⅡB T3 Ga, the detector can apply to the corresponding flammable and explosive environment.
1.Non-contact type measurement technology, not request the auxiliary grounding pole and the installation is simple.The grounding down lead passes through the perforation of the detector directly, which will not affect the lightning protection grounding effect and the device normal working.
2.Provide sensor and PCB module to facilitate user to develop earth resistance on-line monitoring product for the second time.
3.It is small in size and light in weight, and is suitable for installation in place with small space.
4.Alarm function: Setting alarm threshold (through the button of the detector panel or the develop background software).
3.RS485 communication or 4G communication realize remote real-time monitoring.
4.Explosion proof product can be used in corresponding flammable and explosive environments.

Technical Parameter

Power Supply	6VDC~12VDC, 50mA Max(External power supply)
Data Display	4-digit LCD
LCD Size	47mm×28.5mm
Resistance Range	0.01Ω~100Ω
Resolution	0.001Ω
Accuracy	±2%rdg±3dgt(20℃±5℃, below 70%RH)
PCB Size	75mm×54mm×22mm
Sensor Size	76mm×60mm×38mm
Perforation Size	Φ17mm
Sensor Weight	About 188g
PCB Interface	J1: Signal output, power input interface J2: Sensor and PCB connection port
J1 Mark	P+: Power input positive P-: Power input ground GND: Signal ground,short circuited to power input ground (P-) R+: Signal output positive R-: Signal output negative
J2 Mark	I+, I-current coil interface U+, U-voltage coil interface GND：common-ground
Connection Cable	1 PCS, length 0.5m (5-core wire)
Signal Cable	1PCS, length 1m (5-core wire)
Alarm Setting	Detector panel button setting or Background software(developed) setting
Alarm Threshold Setting Range	Resistance: 0Ω~500Ω (turn off the alarm function when set to 500)
Communication Mode	RS485 or 4G communication (optional)
Wiring Cable	Red---power input positive; black---power input ground;(the power input ground and the shielding ground can be connected with short circuit) Green---RS485 signal positive; yellow-green---RS485 signal negative; White---shielding ground;
Overflow Indication	When the test value is greater than 100Ω, the LCD displays the “0LΩ”symbol
Measurement Range Gear Shift	Fully automatic shift
Grounding Lead Interference Current	Should be avoided
External Magnetic Field	＜40A/m
External Electric Field	＜1V/m
Single Measurement Time	About 0.5 second
Working Current	50mA Max.
Install	The ground wire penetrates through the center hole of the sensor
Installation Requirement	The circuit board need to be placed in another protective box
Normal Version 4G	LTE-FDD B1/B3/B5/B8 LTE-TDD B34/B38/B39/B40/B41
Global Version 4G	LTE-FDD B1/B2/B3/B4/B5/B7/B8/B12/B13/B18/B19/B20/B25/B26/B28 LTE-TDD B38/B39/B40/B41 WCDMA B1/B2/B4/B5/B6/B8/B19 GSM B2/B3/B5/B8
Working Temperature & Humidity	-20℃～55℃;20％RH～90％RH

Model comparison

Product Picture	Product Model Name	Clamp Jaw Size	Resistance Range	Clamp Jaw Structure	LCD Displayer	Alarm Function	Communication Method
	ETCR2800B Earth Resistance Online Detector	60mm×28mm	0.01Ω~200Ω		--	Yes	RS485,4G(optional)
	ETCR2800C Earth Resistance Online Detector	60mm×28mm	0.01Ω~200Ω		Yes	Yes	RS485,4G(optional)
	ETCR2800KB Split-Core Earth Resistance Online Detector	56mm×26mm	0.01Ω~100Ω	Closed Loop	--	Yes	RS485,4G(optional)
	ETCR2800KC Split-Core Earth Resistance Online Detector	56mm×26mm	0.01Ω~100Ω	Closed Loop	Yes	Yes	RS485,4G(optional)
	ETCR2800E Small Caliber Earth Resistance Online Detector	Φ17mm	0.01Ω~100Ω	Small Caliber	Yes	Yes	RS485,4G(optional)
	ETCR2800N Built-in Earth Resistance Online Detector	66mm×36mm	0.01Ω~100Ω	Built-In	Yes	Yes	RS485,4G(optional)
	ETCR2800T Stainless Steel Earth Resistance Online Detector	60mm×30mm	0.01Ω~100Ω	Stainless Steel Housing	Yes	Yes	RS485,4G(optional)
	ETCR2800X Large Caliber Earth Resistance Online Detector	130mm×20mm	0.01Ω~10Ω	Closed Loop	Yes	Yes	RS485,4G(optional)

Data download

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ETCR2800E Small Caliber Earth Resistance Online Detector

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