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Musktool-ETCR2800KC Split-core Ground Resistnace Detector,Open Loop Online Earth reistance tester
Musktool-ETCR2800KC Split-core Ground Resistnace Detector,Open Loop Online Earth reistance tester
Musktool-ETCR2800KC Split-core Ground Resistnace Detector,Open Loop Online Earth reistance tester
Musktool-ETCR2800KC Split-core Ground Resistnace Detector,Open Loop Online Earth reistance tester
Musktool-ETCR2800KC Split-core Ground Resistnace Detector,Open Loop Online Earth reistance tester
Musktool-ETCR2800KC Split-core Ground Resistnace Detector,Open Loop Online Earth reistance tester
Musktool-ETCR2800KC Split-core Ground Resistnace Detector,Open Loop Online Earth reistance tester
Musktool-ETCR2800KC Split-core Ground Resistnace Detector,Open Loop Online Earth reistance tester

Musktool-ETCR2800KC Split-core Ground Resistnace Detector,Open Loop Online Earth reistance tester

2023-07-06 14:54:21  

Split-core/0.010Ω~100Ω/LCD/Online Earth Resistance tester

  • Main Feature : 1.On - line monitoring the earth resistance of grounding system 2. Measure Range: 0.010Ω~100Ω 3. No need to disconnect the grounding down lead and no need with auxiliary electrodes 4. Rain and dust proof, can be installed and used in outdoor 5. 47mmX28.5mm LCD 6. Network system can be built to realize real-time detection and remote monitoring 7. EX-Mark: ExiaⅡBT3Ga 8. Explosion Proof Certification: CE18.2332X
  • Serial No. :

INTRODUCTION

ETCR2800C Earth Resistance On - line Detector is high-tech product that our company has devoted to "grounding resistance detection technology research" for more than ten years, specially design and manufacture for online monitoring grounding down lead connection status, circuit grounding resistance and metal circuit connection resistance. ETCR2800B  is closed loop structure, convenient and efficient. On-line testing, non-contact measurement, grounding wire pass through the perforation of the detector, definitely not influence grounding for lightening effect and normal operation, real time on-line testing. Use by RS485 wire communication or GPRS wireless communication data transmission, realize remote online monitoring .Detector built-in sensor and circuit board, completely sealed, ensure high-accuracy, high stability and high reliability of long time on-line monitoring at  field and indoors.

ETCR2800C Earth Resistance On - line Detector suitable for transmission line tower grounding; Meteorological lightning protection grounding; Petrochemical grounding; Communication grounding; Substation grounding; Railway facilities grounding; Construction warehouse grounding; Metal circuit resistance; Electrical equipment grounding etc.

ETCR2800C Earth Resistance On - line Detector could set up wired and wireless network system. Wired network system through RS485 communication protocol to transmit data, build up by the detector, 【communicator, monitoring software, power adapter, computer(above equipment need the user provide and secondary development) 】and other components; Suitable for short-distance ground resistance monitoring. Wireless network system through GPRS communication protocol to transmit data , build up by the detector(built-in GPRS transceiver module), 【SIM communication card, monitoring software, power adapter, computer(above equipment need the user provide and secondary development)】 and other components for long-distance ground resistance monitoring. Wired network system is suitable for monitoring within 1,500 meters distance, wireless network system is not subject to distance restrictions.

ETCR2800KC Accessories:

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  • Detector

  • Fix Screw

  • RS485 Communication Wire

  • Warranty card/Qualification card

  • Paper Box


TECHNICAL SPECIFICATION

Technical Parameter


FunctionDescription
FunctionReturn circuit grounding resistance on-line monitoring, metal return circuit resistance connection online monitoring, grounding condition monitoring.
CT structureClosed loop
Power Supply

Detector:6VDC~12VDC,50mA Max(GPRS 12VDC 150mA Max). (Ui:6V;Ii:50mA;Ci:0μF;Li:0mH;Pi:0.1W)(User supply),

Instrument and safety barrier matching relation:Uo≤Ui,Io≤Ii,Po≤Pi,Co≥Ci,Lo≥Li

Resistance Range0.01Ω~100Ω
Resolution0.001Ω
Accuracy±2%rdg±3dgt(20℃±5℃,below 70%RH)
CT Size56mm X 26mm
Overflow Indicationtest data>100Ω, system software or LCD display “OLΩ” symbol;
Connection line1pcs ,1 meter cord(5 core wire)
Connection IdentifierRed/brown---power supply input anode;
Black--- power supply input cathode;
Blue---RS485 signal anode;
Grey---RS485 signal cathode;
White--- grounding wire shield
(power supply input cathode can connects with analog grounding by short circuit connection)
Communication MethodWired network: RS485 communication protocol(support MODBUS)
Wireless network: RS485 or GPRS communication protocol(support MODBUS)
Network PointsWired network: 1 ~ 250 grounding points, scalable
Wireless network: 60000 grounding points, can be expanded
Communication distanceWired network: about 1500m,scalable
Wireless network: not limited
Alarm Indicationthe detector sound-light alarm and LCD display
Alarm SettingSystem Software Settings
Data DisplayLCD display
LCD Size47mm x 28.5mm
DimensionsDetector: 124mm × 118mm × 76mm
WeightDetector: 1KG
Working  Temperature And Humidity-20℃~55℃;20%RH~90%RH
Humidors ErrorWithin 5%
S hiftAutomatic shift
Grounding Lead Interference CurrentShould be avoid
External Magnetic Field<40A/m
External Electric Field<1V/m
Single Measurement timeAbout 0.5 second
Working currentDetector: 50mA Max.(GPRS: 12VDC 150mA Max)
Explosion-proof markEx ia ⅡB T3 Ga
Explosion-proof CertificationCE18.2332X.
Protection LevelIP54
Power Supply ModeExternal power supply (Equipped by user)

APPLICATION


Installation

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Network Structure

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  • Wired Network System (Self -Development Software)

Wired network system through RS485 communication protocol to transmit data, build up by the detector, 【communicator, monitoring software, power adapter, computer (above equipment need the user provide and secondary development) 】and so on, suitable for short-distance 1500 meters grounding resistance monitoring.








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  • Wireless Network System (Self -Development Software)

Wireless network system through GPRS communication protocol to transmit data ,build up by the detector(built-in GPRS transceiver module), 【SIM communication card, monitoring software, power adapter, computer(above equipment need the user provide and secondary development)】 and other components for long-distance ground resistance monitoring., distance is not limited.








Principle & Application

  • Test Principle

ETCR2800 Earth Resistance On - line Detector, basic principle of measuring the grounding resistance is to measure the loop resistance. Firstly sensor send out a drive pulse signal to the measured ground return circuit, then measured ground return circuit responses a pulse electromotive force E, under the influence of electromotive force E will generate current I in the be measured ground return circuit. Sensor measures E and I value, and gets resistance value of be measured ground loop circuit through the formula: R=E/I.





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  • Loop Resistance & Metal Loop Connection Resistance Tesing

Loop resistance is a composite value includes A point grounding resistance value, grounding down lead metallic conductor’s resistance value, metal overhead line’s resistance value, connection resistance value (contact resistance) between grounding down lead and metal overhead line, B point grounding resistance value.

If grounding network A and grounding network B up and down are connected together on the ground, Detector measures out the resistance value of metal return circuit is very small in general situation, only few of and less than one Ohm, this is the metal loop connection resistance, as a equipotential resistance, but not grounding resistance. Therefore the detector is much convenient to test metal return circuit connection resistance.




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  • Test Method

Single point grounding system: If between grounding network A and grounding network B haven`t overhead line, and not connect together on the ground, then grounding network A and grounding network B can regard as standalone single point grounding connection. Detector cannot test the grounding resistance of single point grounding system directly, will display “OL” overload symbol. Therefore it needs adding one or more auxiliary grounding electrode, to form multipoint loop circuit.

Three point grounding system: In the following figure, the tested ground pole is A and the other two auxiliary ground pole is B and C. The poles A, B, C are connected together on the ground. In the three ground poles grounding down leads were installed on a detector, can accurately test the ground point A resistance value.

Calculated as follows:

R1=RA+RB//RC-------- (1);

R2=RB+RA//RC-------- (2);

R3=RC+RA//RB-------- (3).

Relate Series Model

ModelStructureLCDAlarmAlarm SettingGPRS Communication
ETCR2800BClosed Loop/YesSystem SettingOptional
ETCR2800CClosed LoopYesYesYesOptional
ETCR2800KBSpilt Core/YesSpecial SettingOptional
ETCR2800KCSpilt CoreYesYesYesOptional
ETCR2800NClosed Loop Built-in Type//Special SettingOptional
ETCR2800TStainless Steel  Housing//Special SettingOptional


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