What is Power Factor?                

All electric motors, transformers, ballasts, etc. contain copper windings. They are called inductive loads and require two types of current to operate:

  • Active Current, actually performs work - productive

  • Reactive Current, maintains electro-magnetic fields - non productive

 Which means the Total Current that you read on your amp meter contains these two types current.


“Power Factor” is the relationship between Active Current and Total Current and can be considered as a measurement for efficiency in an electrical system. The higher the power factor, the more efficiently electricity is being used.



Why improve a low power factor?


If you consider that electrical cables are sized according to the Total Current they must carry and that high currents generate energy losses, you will understand that when a plant operates with a low power factor, the utility must provide the networking Reactive Current in addition to the Active Current.  This results in the use of larger generators, transmission cables, transformers, busbars, wires, and other Supply Network devices that otherwise would not be necessary.


Your network and transformer must be sized to carry your requested Total Current.


As the utility's Power Demand increases, they must look for ways to, more efficiently transport electrical energy and reduce operating costs. They will do so by implementing kVA Demand Tariffs, to provide an incentive for the end user to invest in a PFC System and then pass on the benefits.




ESE Power Factor Correction Systems solve the problem


A PFC System acts as your own static Reactive Current Generator.  By generating the required Reactive Current to maintain an efficient power factor, the PFC System automatically reduces the Total Current drawn and subsequently increases Supply System capacity.


From the Supply Network the plant will consume only Active Current and your amp meter will show a 20 - 40% reduction of Total Current.



Who can benefit?


Many commercial and industrial energy consumers can benefit by improving their power factor. These include manufacturing plants, office buildings & institutions, hospitals, shopping centres, pulp & paper mills, saw mills, textile mills, printing plants, etc.


In these times of increasingly competitive markets, everyone looks for ways to reduce running costs of their plants and buildings to operate more efficiently.


Not only will a PFC System save you money and increase your Supply System capacity, it will also:

  • Reduce losses in Supply Network and Switchboards.

  • Prolong life expectancy of Supply Network and manufacturing equipment.

  • Improve Supply voltage levels & dampen voltage dips.

  • Improve greenhouse gas emissions.

 ESE has built a reputation for heavy duty, long life Power Factor Correction Systems and a proven track record in various industries, city towers and hospitals in Victoria, Tasmania, SA, NSW and QLD.