Abstract: Here this document presents design and implementation of a mobile embedded system to measure load currents, overvoltage, transformer oil level and oil temperature. This is implemented by using on-line measuring system using Internet of Things (IOT), with single chip Arduino microcontroller and sensors. It is installed at the distribution transformers i.e. The output values of sensors are processed and recorded in the system memory. System programmed with some predefined instructions to check abnormal conditions. If there is any abnormality on the system, details are automatically updated through serial communication. This Internet of Things (IOT) will help the utilities to optimally utilize transformers and identify problems before any catastrophic failure occurs. Thus online-measuring system is used to collect analyse temperature data overtime. So, Transformer Health Measuring will help to identify or recognize unexpected situations before any serious failure which leads to a greater reliability and significant cost savings.
Keywords: Transformer health, Arduino Uno, Bluetooth module, Ultrasonic Sensor, LM35, Internet of Things.
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