What distinguishes ELCB from Earth Fault Relay?

AI Thread Summary
ELCBs and Earth Fault Relays serve different protective functions in electrical systems. ELCBs trip during an imbalance between the energized conductor and the return, focusing on user safety. In contrast, Earth Fault Relays activate when there is a fault on the energized conductor, prioritizing equipment protection. The transition from ELCB to Earth Fault Relay is often necessary to enhance equipment safety and reliability. Understanding these distinctions is crucial for effective electrical system design and protection.
yushar
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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
 
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The ELCB or 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.
 
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