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View Full Version : ELCB and Earth Fault Relay


yushar
Dec22-10, 07:49 AM
Hi all,

what is different between ELCB and Earth Fault Relay?
why there is a need to change from eLCB to Earth Fault Relay?

thanks

dlgoff
Dec22-10, 04:37 PM
The ELCB or RCD (Residual Current Device) (http://en.wikipedia.org/wiki/Residual-current_device) trips when there's is an unbalance between the energized conductor and the return which protects the user whereas an EarthFault Relay will trip when there's a fault on the energized conductor which protects the equipment.