Power Factor Correction

Environment & Energy Management

Power Factor Correction

Power factor is simply a name given to the ratio of "actual" power (active power) being used in a circuit, expressed in watts or more commonly kilowatts (kW), to the power which is "apparently" being drawn from the mains, expressed in volt-ampere or more commonly kilo volt-ampere (kVA).

Consumers are now billed and penalised for their inefficient systems. In future, consumers will be penalised for plants with power factor below a pre-determined value therefore it is important to ensure your Power Factor is correct.

Disadvantages of low Power Factor:

  • Increased authorities cost since more cur rent has to be transmitted
  • Causes overloaded generators, transformers and distribution lines, resulting in waste, inefficiency and needless wear and tear on industrial electrical equipment.
  • Reduces load handling capability of the plants electrical system.

Improved Power Factor results in:

  • Reduced kVA charges
  • Improved plant efficiency
  • Additional loads can be added to the system
  • Reduced overloading of cables, transformers, switchgear, etc.
  • Improved starting torque of motors
  • Reduce fuel requirements to generate power due to lower losses
  • Energy and cost savings
Carbon Footprint

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