ETCR EM2900 Earth Resistance On-line Detector, also known as earth resistance remote on-line tester, contact type earth resistance on-line detector, which is used for remote monitoring the earth resistance and earth voltage on-line. The detector adopt with simple two-wire method or precision three-wire method to test earth resistance, and the average value rectifier method is used to test the earth voltage and monitor it on-line in real time. The detector with RS485 communication. Users can secondary development and set up  network to realize remote multi-point online monitoring according to the provided MODBUS communication protocol. It is suitable for power facility grounding, highway equipment grounding, meteorological lightning protection grounding, communication base station grounding, railway facility grounding, construction warehouse grounding and electrical equipment grounding, etc.

ETCR EM2900 Earth Resistance On-line Detector equip has LCD displayer, which can view the earth resistance value on site, set the alarm threshold value through the detector button, set the monitoring interval, and with sound and light alarm prompt.

1. The detector adopt with simple two-wire method or precision three-wire method to test the earth resistance, and average rectifier method to test the earth voltage.

2. RS485 communication.

3. Setting Alarm Threshold

4. Setting Monitoring Interval

5. Large display screen, the test result is clear and obvious.