四川中光防雷科技股份有限公司
Products
ZGRJ-400 Earthing Resistance Monitor

General                                                                            
        The system is composed of monitors, solar panels, temperature and humidity sensors, monitoring software. The shell material has the characteristics of high and low temperature resistance, corrosion resistance and flame retardancy, to ensure high accuracy, high stability, and high reliability for long-term online monitoring in the field and indoors. The monitor can receive server instructions, modify the monitoring time interval, and transmit the test data to the backend server. Reports are generated by the backend server, which is convenient for saving historical data for query, printing and analysis.
        Used on transmission line towers and communication towers, it can automatically monitor the grounding resistance of the towers, the soil temperature and humidity data online. Then send them to the backend server through GPRS communication. The monitoring time and frequency can be set according to customer requirements.
Standards Complied                                                                              IEC61010-4-3, IEC61010-1, IEC1010-2-31, IEC61557-1,5, IEC60529
Operating Environment              
Lithium battery 5000mAH,7.4V
Solar panels 5W, 18V
Temperature -40 ℃~55 ℃
Relative humidity ≤80 %
Atmospheric pressure and altitude 86 kPa~106 kPa
Product Configuration (Standard Configuration)                                                                    
Name Quantity Unit Remarks
Monitor 1 Set  
Electrode 2 Set  
Cable 1.5 meter AVR*4
Cable 1.5 meter AVR*2
BVR wire 150 meter 0 meters each for red, blue and black
Temperature and humidity sensor 1 Set  
Monitoring service software 1 Set One set for one project
WEB software 1 Set One set for one project
Performance Index
Monitoring function Measuring range Accuracy Resolution
Earthing Resistance 0.01Ω~20Ω ±2%rdg±3dgt
 (Auxiliary grounding resistance 100Ω±5%, voltage to ground <10V)
0.01Ω
20Ω~200Ω 0.1Ω
200Ω~2000Ω
 (Note: 23℃±5℃, below 75%rh)
Technical Specifications
Function online monitoring the grounding resistance, soil temperature and humidity of power transmission towers.
Monitoring way accurately three-line monitoring
Monitoring method grounding resistance: rated current pole-changing method, monitoring current 11mA Max, 128Hz
voltage to ground: average value rectification
Data pattern average value
Monitoring time grounding resistance: about 120 seconds (4 times)
Number of monitoring 10000 times or more
Communication method GPRS communication
Data storage save the monitoring data on the device, store 100 pieces of historical data, and update it cyclically
Data transmission at the end of each monitoring, the monitoring data will be transmitted to the backend server by GPRS communication
Interval time can be set, automatically monitoring interval time setting range: 1 ~ 999 hours
Power consumption standby: 25mA Max
monitoring: 650mA Max
sending data: 1.42A Max
Quality Monitor: 3.5Kg
Overload protection at the time of testing grounding resistance: AC 280V/3 seconds between E-P and E-C ports
Insulation resistance 10MΩ or more (500V between circuit and case)
Waterproof level IP65
Pollution level 2
Configuration