About AVR

Created by Patrícia Siqueira, Modified on Thu, 29 Feb 2024 at 10:55 AM by Patrícia Siqueira

The Automatic voltage regulator - AVR is a device built to regulate load voltage in order to keep it within a specific range of values obtained through parameters programmed by the user. It measures the transformer output voltage and load current.

The main goal is:

  • To keep the system voltage at a pre-established level, 
  • To compensate the line voltage drop, 
  • To protect the on-load tap changer (OLTC) against over-voltages and over-currents (depending on the option) 
  • And also to measure the OLTC position and control it.

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