Question

How is the capacity rating of stationary capacitors determined?
1. kVAR
2. kVA
3. kW
4. kWh

Answer 1

Correct Answer - Option 1 : kVAR

Capacity Rating of Capacitors:

• Capacitor banks designed for power factor correction are rated in kVAr (kilo-volt-ampere reactive) because it's convenient.
• Since the frequency and voltage of a power distribution system are typically fixed, specifying the capacity in kVAr eliminates some of the mundane calculation required.
• Capacitors are commonly used to provide reactive power support in distribution systems.
• The amount of reactive compensation provided is very much linked to the placement of capacitors in distribution feeders.
• It essentially determines the location, size, number and type of capacitors to be placed.
• It reduces power and energy losses, increases the available capacity of the feeders and improves the feeder voltage profile.