Electricity measurement methods, especially 3-phase power measurement are often constrained by several things, such as the use of several measuring devices for several measurement methods and must be carried out repeatedly to get the accuracy and precision of measurement data, sometimes even the measurement data collection must be obtained within a certain timeframe that is not effective and efficient. Retrieval of measurement data with a measuring instrument must be done by installing a measuring module in the circuit and then the data must be recorded manually. This method has the potential for errors in data collection and data collection. To get over a problem, a measurement method was developed using the IEM3255 module to measure 3 phase power, where the measurement data read can be connected to a web server with the MQTT protocol using IoT (Internet of Thing) technology. With this method, 3-phase power measurement data such as current, voltage, power, frequency and power factor can be stored and read from gadget connected to the internet network.
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