• Shital Prakash Kshirsagar
• Giridhar P. Jain

This system demonstrates the use of an IOT-based three-phase voltage and current monitoring system for load protection with automatic ON and OFF control via a relay. The goal of this system is to track three phase connections in real time and trip the relay in response to changes in three phase supply voltage and current in order to protect three phase devices. The voltage and current at each phase are monitored by the system using different phase sensors. The voltage and current measured by each phase are supplied into the Arduino's analogue to digital converter. The monitoring and controlling will be done through the Arduino board. The tripping of the relay will be determined by the Arduino board's output. Any abnormalities in the input voltage and current at each phase will be detected by the phase sensors. High voltage, low voltage, and current faults are all detected using voltage and current sensors. As soon as any abnormal condition occurs, this system instantly cuts off power to the load. The output of each phase sensor is kept on the cloud surface for remote access and is also displayed on the LCD at any given time. This system can also automatically turn off the mains supply in an abnormal or malfunctioning condition and then turn it back on when the situation is safe.

IOT, Voltage sensor, Current sensor, Arduino, Over voltage, Under voltage, Over current.

"IOT BASED THREE PHASE VOLTAGE AND CURRENT MONITORING AND PROTECTION SYSTEM", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.9, Issue 5, page no.e467-e471, May-2022, Available :http://www.jetir.org/papers/JETIR2205558.pdf

"IOT BASED THREE PHASE VOLTAGE AND CURRENT MONITORING AND PROTECTION SYSTEM", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.9, Issue 5, page no. ppe467-e471, May-2022, Available at : http://www.jetir.org/papers/JETIR2205558.pdf