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INTRODUCTION
Click to download: MEWOI3800P Manual
MEWOI3800P built-in grounding resistance tester is designed specifically for online monitoring connection status of ground lead , loop grounding resistance, metal loop resistance . Online testing, non-contact measurement, ground lead through the clamp,without self-test, real-time detection. Provide RS232, RS485 or MODBUS-RTU communication protocol, the sensor and circuit board can be built in o the chassis of other equipment, user-friendly secondary development and integration. MEWOI3800P built-in grounding resistance online detector can be used for power transmission tower grounding; underground mine equipment grounding; meteorological lightning protection grounding; petrochemical grounding; communication grounding; transformer/substation grounding; railway facility grounding; construction warehouse grounding; electrical equipment grounding,etc. Can also be used for ground wire, metal cable anti-theft monitoring. MEWOI3800P built-in grounding resistance tester can be installed on a single use, can also be formed in o a wired network system or wireless network system. |
SPECIFICATION
| Functions | Circuit grounding resistance monitoring, metal loop resistance on-line monitoring, ground condition monitoring; ground wire, metal cable anti-theft monitoring. |
| Range | 0.01Ω～200Ω |
| Resolution | 0.01Ω |
| Output range | 0.00Ω～200Ω |
| Accuracy | ±2%rdg±3dgt(20℃±5℃，<70%RH) |
| Power Supply | 6VDC～9VDC，50mA Max. |
| Weight | 680g |
| Host Size | 110mm×80mm×55mm |
| PCB Size | 166mm×56mm×20mm |
| Ground perforation size | 66mm×36mm，Closed Type |
| Extend Wire | 1pc,1Meter(5Cores Wire) |
| Single Test Time | About 0.5Second |
| PCB Interface | J1,Signal output, power input interface J2,The connection interface between the Host and PCB |
| J1 Identification | P+：Power Output+ P-：Power Input- GND：Signal,Connect with Power Input(P-) R+：Singal Output+ R-：Signal Input- |
| J2 Identification | I +, I-current coil interface U +, U-voltage coil interface GND: Common ground |
| Connection Line Identificatin | Red / brown --- Power input positive; Black - Power input ground; Blue --- RS485 signal is positive; Gray --- RS485 signal is negative; White --- shield to; (Power input ground and shield can be short-circuit connection) |
| Communication Method | RS232, RS485 or MODBUS-RTU communication protocol |
Overflow indication | When the display value is greater than 200Ω, the communication sends an "OLΩ" command |
| Working Temperature and Humidity | -20℃～50℃; below 90%rh |
| Storage Temperature and Humidity | -20℃～60℃; below 70%rh |
Temperature and humidity error | Less than 5% |
| External magnetic field | ＜40A/m |
| External electric field | ＜1V/m |
| Install | The ground wire passes through the center hole of the sensor |
| Installation Requirements | Circuit boards need to be placed in other protective box, to avoid rain, flooding installation |
| Power consumption | 50mA Max. |
| Power supply | External power supply |
Ground interference current | Should be avoided |
Shift | Automatic shift |
| Accessories | Sensor: 1 pc; PCB module: 1 pcs; Connection cable: 1 piece |
SPECIFICATION
| Functions | Circuit grounding resistance monitoring, metal loop resistance on-line monitoring, ground condition monitoring; ground wire, metal cable anti-theft monitoring. |
| Range | 0.01Ω～200Ω |
| Resolution | 0.01Ω |
| Output range | 0.00Ω～200Ω |
| Accuracy | ±2%rdg±3dgt(20℃±5℃，<70%RH) |
| Power Supply | 6VDC～9VDC，50mA Max. |
| Weight | 680g |
| Host Size | 110mm×80mm×55mm |
| PCB Size | 166mm×56mm×20mm |
| Ground perforation size | 66mm×36mm，Closed Type |
| Extend Wire | 1pc,1Meter(5Cores Wire) |
| Single Test Time | About 0.5Second |
| PCB Interface | J1,Signal output, power input interface J2,The connection interface between the Host and PCB |
| J1 Identification | P+：Power Output+ P-：Power Input- GND：Signal,Connect with Power Input(P-) R+：Singal Output+ R-：Signal Input- |
| J2 Identification | I +, I-current coil interface U +, U-voltage coil interface GND: Common ground |
| Connection Line Identificatin | Red / brown --- Power input positive; Black - Power input ground; Blue --- RS485 signal is positive; Gray --- RS485 signal is negative; White --- shield to; (Power input ground and shield can be short-circuit connection) |
| Communication Method | RS232, RS485 or MODBUS-RTU communication protocol |
Overflow indication | When the display value is greater than 200Ω, the communication sends an "OLΩ" command |
| Working Temperature and Humidity | -20℃～50℃; below 90%rh |
| Storage Temperature and Humidity | -20℃～60℃; below 70%rh |
Temperature and humidity error | Less than 5% |
| External magnetic field | ＜40A/m |
| External electric field | ＜1V/m |
| Install | The ground wire passes through the center hole of the sensor |
| Installation Requirements | Circuit boards need to be placed in other protective box, to avoid rain, flooding installation |
| Power consumption | 50mA Max. |
| Power supply | External power supply |
Ground interference current | Should be avoided |
Shift | Automatic shift |
| Accessories | Sensor: 1 pc; PCB module: 1 pcs; Connection cable: 1 piece |
Sensor: 1 pc; PCB module: 1 pcs; Connection cable: 1 piece