Product Main Function
1. On - line monitoring the earth resistance of grounding system
ETCR2800C Non-Contact Grounding resistance Online Detector used for on-line monitoring the earthing resistance of earthing system, measure range: 0.010Ω~200Ω. 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 Non-contact Earth Resistance Online Detector, can display the measured data directly through the LCD; the detector could set alarm threshold, with sound and light alarm indication, suitable for independent installation and use no need to set up the network.
| Function | Return circuit grounding resistance on-line monitoring, metal return circuit resistance connection online monitoring, grounding condition monitoring. |
| CT structure | Closed 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 Range | 0.01Ω~200Ω |
| Resolution | 0.001Ω |
| Accuracy | ±2%rdg±3dgt(20℃±5℃，below 70%RH) |
| CT Size | 60mmx28mm |
| Overflow Indication | test data>200Ω, system software or LCD display “OLΩ” symbol; |
| Connection line | 1pcs ,1 meter cord(5 core wire) |
| Connection Identifier | Red/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 Method | Wired network: RS485 communication protocol(support MODBUS) |
| Wireless network: RS485 or GPRS communication protocol(support MODBUS) | |
| Network Points | Wired network: 1 ~ 250 grounding points, scalable |
| Wireless network: 60000 grounding points, can be expanded | |
| Communication distance | Wired network: about 1500m,scalable |
| Wireless network: not limited | |
| Alarm Indication | the detector sound-light alarm and LCD display |
| Alarm Setting | System Software Settings |
| Data Display | LCD display |
| Dimensions | Detector: 132mm × 130mm × 76mm |
| Weight | Detector: 1KG |
| Working Temperature And Humidity | -20℃~55℃;20%RH~90%RH |
| Humidors Error | Within 5% |
| Shift | Automatic shift |
| Grounding Lead Interference Current | Should be avoid |
| External Magnetic Field | <40A/m |
| External Electric Field | <1V/m |
| Single Measurement time | About 0.5 second |
| Working current | Detector: 50mA Max.(GPRS: 12VDC 150mA Max) |
| Explosion-proof mark | Ex ia ⅡB T3 Ga |
| Explosion-proof Certification | CE18.2332X. |
| Protection Level | IP54 |
| Power Supply Mode | External power supply (Equipped by user) |
| Model | CT Structure | Range | Difference |
| ETCR2800B | Close loop | 0.010Ω～200Ω | NO LCD and Indicator light, need to build Internet |
| ETCR2800C |
Close loop |
0.010Ω～200Ω | With LCD, Alarm Setting,Sound and light alarm indication |
| ETCR2800KB | Split-core | 0.010Ω～100Ω | No need to disconnect the grounding wire in installing,detector with sound and light alarm indication |
| ETCR2800KC | Split-core | 0.010Ω～100Ω | No need to disconnect the grounding wire in installing, detector with LCD, Alarm Setting, sound and light alarm indication |
| ETCR2800N |
Close loop and built-in type |
0.010Ω～200Ω | No shell, suitable for secondary development |
| ETCR2900 | None | 0.01Ω~2000Ω | Need ground auxiliary pile,communicate with the computer directly, dector with LCD, alarm setting,sound and light alarm indication |
| Package | Outer package | Carton |
| Inner package | None | |
| Accessory | Meter | 1 pcs |
| Power and Communication Cable | 1 pcs | |
| Manual | 1 pcs | |
| Certificate | 1 pcs | |
| Warranty Card | 1 pcs |
ETCR2800C Non-Contact Grounding resistance Online Detector used for on-line monitoring the earthing resistance of earthing system, measure range: 0.010Ω~200Ω. 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 Non-contact Earth Resistance Online Detector, can display the measured data directly through the LCD; the detector could set alarm threshold, with sound and light alarm indication, suitable for independent installation and use no need to set up the network.
| Function | Return circuit grounding resistance on-line monitoring, metal return circuit resistance connection online monitoring, grounding condition monitoring. |
| CT structure | Closed 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 Range | 0.01Ω~200Ω |
| Resolution | 0.001Ω |
| Accuracy | ±2%rdg±3dgt(20℃±5℃，below 70%RH) |
| CT Size | 60mmx28mm |
| Overflow Indication | test data>200Ω, system software or LCD display “OLΩ” symbol; |
| Connection line | 1pcs ,1 meter cord(5 core wire) |
| Connection Identifier | Red/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 Method | Wired network: RS485 communication protocol(support MODBUS) |
| Wireless network: RS485 or GPRS communication protocol(support MODBUS) | |
| Network Points | Wired network: 1 ~ 250 grounding points, scalable |
| Wireless network: 60000 grounding points, can be expanded | |
| Communication distance | Wired network: about 1500m,scalable |
| Wireless network: not limited | |
| Alarm Indication | the detector sound-light alarm and LCD display |
| Alarm Setting | System Software Settings |
| Data Display | LCD display |
| Dimensions | Detector: 132mm × 130mm × 76mm |
| Weight | Detector: 1KG |
| Working Temperature And Humidity | -20℃~55℃;20%RH~90%RH |
| Humidors Error | Within 5% |
| Shift | Automatic shift |
| Grounding Lead Interference Current | Should be avoid |
| External Magnetic Field | <40A/m |
| External Electric Field | <1V/m |
| Single Measurement time | About 0.5 second |
| Working current | Detector: 50mA Max.(GPRS: 12VDC 150mA Max) |
| Explosion-proof mark | Ex ia ⅡB T3 Ga |
| Explosion-proof Certification | CE18.2332X. |
| Protection Level | IP54 |
| Power Supply Mode | External power supply (Equipped by user) |
| Model | CT Structure | Range | Difference |
| ETCR2800B | Close loop | 0.010Ω～200Ω | NO LCD and Indicator light, need to build Internet |
| ETCR2800C |
Close loop |
0.010Ω～200Ω | With LCD, Alarm Setting,Sound and light alarm indication |
| ETCR2800KB | Split-core | 0.010Ω～100Ω | No need to disconnect the grounding wire in installing,detector with sound and light alarm indication |
| ETCR2800KC | Split-core | 0.010Ω～100Ω | No need to disconnect the grounding wire in installing, detector with LCD, Alarm Setting, sound and light alarm indication |
| ETCR2800N |
Close loop and built-in type |
0.010Ω～200Ω | No shell, suitable for secondary development |
| ETCR2900 | None | 0.01Ω~2000Ω | Need ground auxiliary pile,communicate with the computer directly, dector with LCD, alarm setting,sound and light alarm indication |
| Package | Outer package | Carton |
| Inner package | None | |
| Accessory | Meter | 1 pcs |
| Power and Communication Cable | 1 pcs | |
| Manual | 1 pcs | |
| Certificate | 1 pcs | |
| Warranty Card | 1 pcs |
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