About AVR

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.