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Transformer Monitoring and AVR

Power transformer is a basic equipment for the Transmission and Distribution Network and requires the application of powerful Monitoring and Control Systems.

RTU Dt set is developed and intended for medium and large oil immersed Power Transformers with On-load Tap Changers (OLTC).

 The set provides safe, reliable, easy to use and cost effective power transformer condition monitoring and Automatic Voltage Regulation (AVR) with the following basic features:

  • Electrical and technological parameters measuring, processing and monitoring;
  • AVR for Single/Parallel operating Power Transformers;
  • Smart cooling system control.


Voltage regulation functionality provides:

  • Automatic and OLTC control of a single power transformer;
  • Automatic and manual OLTC control of parallel operating power transformers;
  • Three-phase overcurrent and under/over voltage blocking.