Study on surge protection system

Abstract

This project is to study on surge protection system. This project also involves the design and construction of surge protection system which includes the software and hardware component test. The main component used in this protection circuit is semiconductor components which is metal oxide varistor (MOV). This system also consists indicator circuit and filter circuit. PSpice software has been used to simulate the filter circuit. The performances of this protection circuit has been investigated by conducting two types of experimental test which is frequency response test and supply voltage test. At the end of the project, the protection circuit able to show its effectiveness when supplied input voltage over maximum system voltage, the metal oxide varistor (MOV) able to show its application to continuous voltage at about 10 to 25% above maximum system voltage and able to divert the extra voltage to ground when overvoltage occur. However the filter did not function well due to stray components in the circuit.