BENEFIT AND CONTRIBUTION

BENEFIT AND CONTRIBUTION

In Malaysia it is common, The faults might be LG (Line to Ground), LL (Line to Line), 3L (Three lines) in the supply systems and these faults in three phase supply system can affect the power system. To overcome this problem a system is built, which can sense these faults and automatically disconnects the supply to avoid large scale damage to the control gears in the grid sub-stations. After fault happen Automatic Earth Leakage Circuit Breaker (Auto-ELCB) will automatic turn on after the temporary fault, the power will continue supply into the house and the owner do not have to worry about their house. Alarm system also can continue active to guide the house and prevent from the thief while owner is not at home.

Auto-ELCB also has advantages, they are less sensitive to fault conditions, and therefore have fewer nuisance trips. (This does not mean they always do, as practical performance depends on installation details and the discrimination enhancing filtering in the ELCB.) Therefore by electrically separating cable armor from the cable circuit protective conductor, an ELCB can be arranged to protect against cable damage only, and not trip on faults in down line installations.