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020 _aTHE0006769(Local)
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040 _aUMP
090 _aTK2842 .T37 2009 rs Bc.
100 0 _aMohd Tarmizi Rahim
245 1 0 _aDevelopment of earth leakage circuit breaker with an auto re-closer unit /
_cMohd Tarmizi Rahim
246 3 _aDevelopment of earth leakage circuit breaker with an auto re-closer unit [electonic resource]
260 _aKuantan, Pahang :
_bUMP,
_c2009
300 _a150 p. :
_bill. (some col.) ;
_c30 cm.+
_e1 computer disc.
502 _aProject paper (Bachelor of Electrical Engineering (Power system)) -- Universiti Malaysia Pahang - 2009
520 3 _aPower system protection is the most important requirement before the power system is put into operation. Electrical energy has caused dangers both to the human and the machines. Protection system is mostly controlled by the Earth Leakage Circuit Breaker (ELCB). This device is the brain of the protection system that monitors input current from power line by it sensor Zero phase Current Transformer (ZCT), then sending the signals to the mechanical switch to tripped the circuit breaker. ELCB is widely applied by consumer weather it is for resident, factory, laboratory and also power distribution. Power system protection can be implemented at various stages and various types of protection devices. Because industrial operation requires protection of their Equipment from the lightning, short-circuit and also over-current, so the ELCB will serve the purpose as the protection of their system. This project will attempt to improve and design the currently ELCB by using PIC microcontroller so that it have the ability to identify the fault, act accordingly, display the fault and also to re-close it back to normal. The PIC micro controller will cause the ELCB to trip when there is unbalance current from power line flow through life line and neutral line is ≥100mA. In order to design it, first thing of the current from the power line need to be measure in order to monitor it using ZCT including testing the fault (over current, lightning and short circuit) and when such condition arise, it will isolate the load from power line in the shortest time possible without harming the any other electrical devices. In this project PIC microcontroller will be used to control and operate the SSR, thus replacing the current mechanical switch.
650 0 _aPower electronics
650 0 _aElectric circuit-breakers
999 _aVIRTUA40
_c1246
_d1252
999 _aVTLSSORT0080*0200*0400*0900*1000*2450*2460*2600*3000*5020*5200*6500*6501*9992