Power Factor Correction Analysis and Installation

Power quality in building services applications. Better efficiency in your electrical supply can drastically reduce your energy bills.

Power factor correction explained

As power factor drops the system becomes less efficient. A drop from 1.0 to 0.9 results in 15% more current is required for the same load. A power factor 0.85 requires approximately 25% more current to handle the same load.The objective, therefore, should be to reduce the reactive power drawn from the supply by improving the power factor.By installing capacitors to improve your power factor you will save on your electricity bill.

Additional potential benefits include

  • Reduction of heating loses in transformers and distribution equipment
  • Longer plant life
  • Stabilised voltage levels
  • Increase in capacity of your existing system and equipment
  • Improved profitability

New regulations

New regulations on harmonics, EA Engineering Recommendation G5/4, affect everybody connected to the public electricity supply. G5/4 limits the overall voltage distortion at each level in a network; the limits are applied at the Point of Common Coupling, or PCC, where the internal supply system meets the public network.

All consumers have an agreement to connect with their Network Operating Company, and part of any new agreement includes a requirement to meet G5/4. Failure to meet these conditions could, as a last resort, result in disconnection from the supply.

Contact us for useful information and to see how we can provide a site analysis showing guaranteed savings.

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