The Servo Controlled Voltage Stabilizers (SCVS) use 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 variations. This type of technology is 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.
- Air-Cooled or Oil-Cooled
- Single Phase Input & Single Phase Output
- Three Phase Input & Three Phase Output (Balanced Load)
- Three Phase Input & Three Phase Output (Unbalanced Load)
- Output voltage accuracy is usually ± 1% with input voltage changes up to ± 50%.