Electric School on Instagram: "What is AVR in Electrical | Automatic Voltage Regulator Working Explained AVR stands for Automatic Voltage Regulator. 👉 How AVR Works? AVR continuously monitors the output voltage of the generator. If voltage drops due to high load, AVR increases excitation to boost the output. If voltage goes high, AVR reduces excitation to bring it back to normal. This ensures that electrical equipment connected to the generator runs safely without damage. 👉 Where AVR is Used?