Capacitor Bank details

          Capacitor Bank 

•    Capacitor bank can be connected in LT or HT side 
•  In Industries it is connected in HT side due to High rated motors   installed and requirement of Reactive power is more.
•   Where as in commercial Buildings Capacitor banks of smaller capacities are placed in LT room.

•         Why we need Capacitor Bank?
•    Capacitor Bank improves power Factor gives Leading PF, helps   industry from getting low PF penalties from Electricity Board.
•     Reduces losses.
•      Improves motor performance.
•     P= V I cosǾ, PF inversely proportional to voltage & current.

 HT Capacitors in Industrial Sector

•   In industries HT Capacitors are used & are placed at Switchyard.
•   HT capacitors placed in between Series reactor & Residual voltage Transformer.
•     HT capacitor bank rated at 40KV.
•  Capacitor bank has single Capacitor unit for each phase (RYB).
•  Capacitor bank outgoing connected to Residual voltage transformer and to relays.

 

                             HT capacitor unit

• HT CAPACITOR bank unit consists of parallel combination of capacitors connected inside the unit .
• Generally capacitor connected in Delta formation.
• Capacitors bank are generally considered as load because it consumes power to get capacitor charged and give required power factor , so it is considered as load ..
• Capacitors bank are protected from heavy inrush and from sudden surges . Series reactor and residual voltage Transformer helps capacitor bank from Electrical hazards. 

               HT capacitor unit in Switchyard