The iReact-TAP-2 unit is a smart sensor, providing position information of the substation’s transformer On-Load Tap Changer (OLTC). It is suitable for direct interconnection with the iReact-Solution automation controllers. The iReact-TAP-2 provides a Resistor Potentiometer (POT) position transducer that converts input potentiometer position to 4…20mA analog output signals. The sensor is able to digitally configure and independently calibrate the two analog outputs. The iReact-TAP-2 has built-in power supply, supporting 36-115VDC power input.

Operations & Features


  • R Potentiometer input for receiving encoded OLTC position converted to two 4…20mA analog output signals

  • 2 x 4…20mA independent outputs

  • Logging of OLTC transitions number

  • Fault detection of OLTC operations

  • Direct interfacing with the iReact-3 automation controllers

  • Independent configuration and calibration of the analog outputs using a host computer

  • Web Server for easy access to parameter setup

  • Several communication protocols (Modbus, FIWARE, etc.) for transmission of acquired measurements

  • Supports firmware upgrades