Variable Shunt Reactors (VSR) are used for applications requiring a wide reactive power range with a non-dynamic regulation (e.g. wind farms).

Functions which may be achieved by VSRs

• Maintain steady-state voltage limit conditions
• Keep reactive power flow within predefined limits
• Maintain a desired power factor

Features

• 3-phase oil immersed, iron-cored Variable Shunt Reactors
• For reactive power compensation
• STEPLESS adjustability in ON-LOAD condition over a wide power regulation range using the proven plunger core technique which allows a smooth transition between reactive power ratings
• 3-phase power rating up to 50 MVAr 
• Voltage level up to 145 kV (BIL < 650 kV) in solid grounded networks (graded insulation)
• Stepless power regulation range 20-100 %
• Typical regulation time from min to max power around 300 s