Monitoring and protection on three-phase motor by using GSM modem

Ali, Afandi Afham (2021) Monitoring and protection on three-phase motor by using GSM modem. Project Report. Universiti Teknikal Malaysia Melaka, Melaka, Malaysia. (Submitted)

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Abstract

Because of its ease of use, high durability and high efficiency, the three-phase electrical motor is the most important driver machinery and widely use in industries. Without a proper maintenance and wrong environment, three-phase electrical motor easily can have problem such as overheating or single-phasing. This project proposes monitoring system for three-phase electrical motor which monitor temperature of the motor and prevent from single-phasing. AT89C51 microcontroller is used in the circuit to receive data from LM35 temperature sensor and send data to buzzer, contactor, and GSM modem. The temperature sensor's output was first an analog signal and ADC 0804 is used to convert data from temperature sensor into digital signal then send back the data to microcontroller. The intention of this project is to protect three-phase electrical motor from occur abnormal condition such as overheating and single phasing and to develop a system that can monitor motor’s condition. The result from this project can contribute to industries in the future.

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