Earth Grid Resistance Measurement and Monitoring System
MODEL: ECR-2 EPEG
Application
Resistance of three individual earth pits and overall grid resistance can be monitored with ECR-2EPEG. For earth grid with more than three earth pits, resistance of two individual earth pits, parallel resistance of remaining earth pits and the overall earth grid resistance can be monitored with ECR-2 EPEG. ECR-2 measuring unit can communicate the earth grid resistance through RS-485 Modbus RTU or through 4-20mA analog output signal to the remote DCS.
Protection
Rated Power Supply
230VAC 50Hz (± 10 %)
Total Power Requirement
10 VA (Max.)
Range for earth grid resistance
0.16 to 3 Ohms, (factory settable)
Resolution
0.01 Ohm.
Communication method
4 to 20 mA analog output
Connection arrangement
Two sensors connected in series between two earth pits and earth grid.
Numbers of channels for measurement
Two channels
Inputs
Process earth pit connection to three or more earth pits
Cable entries
Three or four, suitable for 19mm Gland
Indication
Green LED – EARTH OK
Red LED – EARTH HIGH
Relay output rating
Two Change over 250V/ 5A (Resistive load)