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.
