Design of a two factor authentication electric power isolation system

Abstract

Electrical power isolation is an essential safety practice in industrial and commercial settings to prevent unauthorized access and protect maintenance personnel. This project introduces the design of an Electric Power Isolation System with Two-Factor Authentication. An Arduino Nano microcontroller is used to process user inputs from a keypad, which in turn controls an MG99R servo motor to operate the isolator switch. A GSM module is integrated to send SMS alerts for both successful and failed authentication attempts, providing real-time notifications to authorized users. To improve system reliability and user awareness, audio-visual indicators were included—such as a buzzer for incorrect password entries and an LED to indicate system status. The design was initially validated through simulation in Proteus software before being implemented in hardware. The system is particularly suitable for use in industrial switchgear, power distribution units, and maintenance operations where secure control of electrical isolation is vital for safety and efficiency. The resulting system delivered an automated, secure, and effective solution for managing electrical isolation, minimizing the dangers of unauthorized use and unintended power reactivation. Potential future upgrades would include the integration of biometric authentication, IoT connectivity, and remote access capabilities to further enhance security and usability.