Split Type Ground Resistance Earthing Tester On-line Detector 0.01Ω~100Ω
Overview
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. It 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.
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.
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.
Specification
Technical Parameter
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Function
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Description |
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Function
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Return circuit grounding resistance on-line monitoring, metal return circuit resistance connection online monitoring, grounding condition monitoring.
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CT structure
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Closed loop
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Power Supply
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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
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Resistance Range
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0.01Ω~100Ω
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Resolution
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0.001Ω
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Accuracy
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±2%rdg±3dgt(20℃±5℃，below 70%RH)
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CT Size
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56mm X 26mm
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Overflow Indication
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test data>100Ω, system software or LCD display “OLΩ” symbol;
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Connection line
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1pcs ,1 meter cord(5 core wire)
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Connection Identifier
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Red/brown---power supply input anode;
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Black--- power supply input cathode;
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Blue---RS485 signal anode;
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Grey---RS485 signal cathode;
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White--- grounding wire shield
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(power supply input cathode can connects with analog grounding by short circuit connection)
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Communication Method
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Wired network: RS485 communication protocol(support MODBUS)
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Wireless network: RS485 or GPRS communication protocol(support MODBUS)
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Network Points
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Wired network: 1 ~ 250 grounding points, scalable
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Wireless network: 60000 grounding points, can be expanded
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Communication distance
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Wired network: about 1500m,scalable
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Wireless network: not limited
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Alarm Indication
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the detector sound-light alarm
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Alarm Setting
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System Software Settings
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Data Display
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None
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Dimensions
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Detector: 125mm × 119mm × 80mm
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Weight
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Detector: 1KG
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Working Temperature And Humidity
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-20℃~55℃ ; 20%RH~90%RH
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Humidors Error
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Within 5%
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Shift
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Automatic shift
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Grounding Lead Interference Current
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Should be avoid
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External Magnetic Field
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<40A/m
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External Electric Field
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<1V/m
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Single Measurement time
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About 0.5 second
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Working current
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Detector: 50mA Max.(GPRS: 12VDC 150mA Max)
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Explosion-proof mark
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Ex ia ⅡB T3 Ga
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Explosion-proof Certification
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CE18.2332X.
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Protection Level
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IP54
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Power Supply Mode
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External power supply (Equipped by user)
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