Reliable power for a sustainable world

Also known as an Automatic Voltage Regulator (AVR) or Voltage Regulator (VR), an Automatic Voltage Stabiliser (AVS) stabilises the mains power supply voltage to a load. 

It is a feature of Line Interactive uninterruptible power supplies and provides protection from power problems such as sags, brownouts and surges.  

Automatic Voltage Stabilisers have a wide input voltage window (+20/-40%). If the input supply voltage is too low, the AVS uses a transformer to boost (step-up) the output voltage. On the other hand, if the input supply voltage is too high, the AVS reduces the voltage to a safe operating range (this process is known as buck or step-down). 



Output voltage tends to track the input voltage window as there’s no need for any voltage regulation.  

Some AVS incorporate a filter that provide both the load and the stabiliser itself with limited protection from spikes, transients and electrical noise.  


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