The Servo Stabilizers uses an advanced electronic servo-motor concept to control a motorized variable transformer. Because of the motorization, there is a small delay in voltage correction. However, output voltage accuracy is usually ± 1% with input voltage changes up to ± 50%. These machines are not affected unduly by power factor or frequency variation. This type of technology tends to be extremely effective when considering large three phase applications, as it is able to maintain its accuracy of all three phases, both line to line and line to neutral, irrespective of input voltage balance and load balance at any power factor. They are also able to withstand large inrush currents, normally experienced with inductive loads. However due to the mechanics of this type of stabilizer, periodic maintenance is required.
Advantages:
- Fast correction rate of about 50V/s and very high efficiency.
- It can work in a voltage variation limit of 180V-270V
- Works over wide input frequency range and no waveform distortion.
- Auto/Manual operation facility can be implemented if desired.
- Over voltage and under voltage indicators.
- Unaffected by load Power Factor.
- High overload capacity
