3 phase AC Current RMS to Modbus RS485
Airsprint-RMS is a 3 phase AC Current Monitoring Device with Modbus RS485 output for compatibility with IOT Gateways, PLC's & RTU's. It is extremely useful for Condition Monitoring of 3 phase AC motors especially if they are Start Stopped for few seconds like OLTC ( Online Tap Change Motors ) for Power Transformers. Airsprint-RMS captures the following data every time the tap change motor is operated based on Trigger setting. Average RMS of the phase for the period of operation, Max RMS value during the period of operation, Period of operation ( in seconds), Count of the Number of Operations. Apart from this the instantaneous value for each phase is also available. The gateway can then read all these data at its own sampling interval which can be in minutes. It can also be used for Machine OEE applications where the instantaneous current can define whether the machine is running or if it is in IdleState/Stop State.