Non-Contact Grounding Resistance Online Tester (with Display)
This product is designed forGrounding resistance test, invulnerable to high or low temperature,corrosion,fire. Non-contact measurement, safe and reliable, Easy of installation
Grounding down lead goes directly through the detector perforation, not affecting lightning protection grounding effect and the normal operation of the facilities
With display and Alarm, it is enable to observe the resistance and preset Max value
Application:
Electric transmission line pole grounding
Underground mine device grounding
Petrochemical engineering ground
Provides power supply and RS485 signal interface, and standard MODBUS-RTU communication protocol,which user can do secondary development to realize remote monitoring.
Technical Specifications
Functions
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Return circuit ground resistance, metallic return connection resistance, grounding conditions on-line monitoring
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Power Supply
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6VDC~9VDC, 50mA Max.
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Resistance Range
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0.01Ω~200Ω
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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℃, below70%RH)
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Grounding Wire Perforation Size
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60mm×30mm, closed mode (60mm×4mm steel flat or external diameterФ30mm electric cable)
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Connecting Line
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A one meter long wire (5cores shielded wire)
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Connection Identifier
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Red/brown---power supply input anode.
Black--- power supply input cathode
Blue---RS485 signal anode.
Grey---RS485 signal cathode.
White--- analog grounding (power supply input cathode can connects with analog grounding by short circuit connection).
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Communication Protocol
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RS485 standard MODBUS-RTU communication protocol
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Detector Dimensions
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175mm×170mm×130mm
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Installing Screw Hole Size
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Φ8mm
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Quality
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Detector:960g
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Working Temperature And Humidity
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-10℃~40℃; 20%RH~90%RH
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Humiture Error
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Within 5%
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Shift
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Automatic shift
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GND Interference Current
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Prohibited
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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 Of Time
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About 0.5 second
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Power Consumption
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50mA Max.
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Installation
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Grounding wire through Detector centre bore
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Level Of Protection
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IP65
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Installation Requirements
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Avoid rain and water logging
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Power Supply Mode
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External power supply (Equipped by user)
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