motor-driveA key component for reliable operation of tap changers is the TAPMOTION® ED motor-drive unit, which has been installed over 100,000 times since it was launched in 1997. Today the latest TAPMOTION® ED ISM® combines state-of-the-art automation solutions with reliable drive technology.

Stricter requirements derived from regulatory specifications, increasing system load and interconnection, higher requirements on the availability and reliability of equipment, and aging transformer fleets all combine to make continuous monitoring and analysis of transformers an increasingly important business strategy.

Intelligent motor-drive units

This is why the new TAPMOTION ED ISM is fitted with ISM (Integrated Smart Module) technology developed by Maschinenfabrik Reinhausen (MR). ISM is the latest standardised hardware and software platform that is used for all MR automation solutions. It is particularly well suited to the special conditions that apply in the field of electrical energy technology.

This means that the TAPMOTION ED ISM not only ensures reliable operation of the on-load tap-changer, but also enables all relevant operating data of the power transformer to be analysed and recorded. This includes, for example, monitoring of the tap changer, temperatures, signals from the motor-drive unit and the status of the protective devices, as well as evaluating transformer utilisation.

Benefits of added security and flexibility

The data from the module can be transferred directly to the control system using IEC 61850-compliant methods. This greatly reduces the amount of In practice, this significantly increases operational reliability – incidents are prevented by means of early detection and fast diagnosis of errors. Furthermore, costs are reduced because maintenance work is carried out in a targeted manner based on the condition of the system. With a large transformer fleet…

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