INTELLIGENT EARTH LEAKAGE CIRCUIT BREAKER (1-ELCB) FOR SINGLE-PHASE SYSTEM

An Earth Leakage Circuit Breaker (ELCB) is an electrical device that
disconneCts proteCted circuit whenever it detects unbalance current between the phase
conductor and the neutral conductor. Example of the unbalance may caused by
current leakage through die bixly of a person Who is grounded when accidentally
touching the energized part of the circuit. A lethal shock can result from these
conditions. ELCB are designed t() disconneCt this fa\llt fast enough to mitigate the
harm caused by such shocks. Currently, there is no Earth Leakage Circuit Breaker
(ELCB) with allto re-Closer featlll"es iii the market. The current ELCB tliat available
in the market is a manual type and cannot differentiate between temporary
distlll"bances llrid permanent fa\llts, meaning tliat, if a distllfbaiiee or falllt occurs ()n
the protected area (house), the protection system will force ELCB to trip. One of the
disadvantage ()fthe common ELCB is that, it is cannot tllfn oil the power sllpply back
to the normal operation condition although only a short disturbance occurs. Such
disturbilitce is lightnilig strike on the transmission line in the disti'iblltion site near to
the protected area. To tum the power back to normal operation, consumers need to do
that iiiaiillally. To overcome tfiis problem, IitteJiigeitt Ellftli Leakage Circuit Breaker
(1-ELCB) has been developed. This device was designed to auto-reset ELCB when
sfiort distllfbllrice occllr aiid send alert signal to user ifj)erffianeitt falllt occur.