Smart Overload Fault Trip System For Domestic Application Using Gsm Communication Module

摘要

Occurrence of Electrical faults such as overload and short circuit fault is hazardous to electrical devices. Developing an overload fault trip system helps to minimize the chances of damage to electrical devices. This paper explores the concept of overload as an electrical fault with a system designed to shut down supply immediately the current flowing through is high enough to cause damage. The system determines the current flowing in the circuit through a current sensor and compares it to a preset current value. This work discusses a prototype protective system suitable for handling Overload and Short Circuit fault current arising from public power supply with an SMS feedback and warning sign notifications. It further develops an LCD programme to display the current reading and status of the device. The description of various components used in designing and construction of this prototype protective system, and how they are connected are presented. Finally the system is practically implemented and the results obtained verify the essence of the design.