What is Power Factor?

Power Factor is a ratio of actual electrical power and a measure of effectiveness of the electrical performance of your equipment.

What is good Power Factor?

A Power Factor of more than 90%.

What does low Power Factor do?

Dramatically increases the cost of your electricity.

Why Captech?

  • Power factor correction equipment is based on modem technology & compact design and provides tum-key solutions.
  • Captech (also known as Capacitor Technologies) has been established for over 25 years and continues to provide service and support beyond the standard warranty and guarantee period.
  • A wide range of power factor correction units are available including Solid State and 11kV/22kV.
  • Captech provides customers with outstanding after sales support including installation, commissioning and maintenance.
  • Company services include: power quality investigation, harmonic surveys, demand management, surge protection, thermal imaging and earth fault detection.


What are the advantages of having a good power factor?

  • Reduce the cost of electricity.
  • Increase available capacity therefore making room for additional load/equipment.
  • Improve efficiency.
  • Improve the quality of electrical supply.
  • Reduce greenhouse emissions.
  • Comply with Supply Authorities.


What is Voltage Power Optimisation (VPO)?

A reduction and balancing in electricity supply voltage that achieves a saving in energy consumption (kWh) and a reduction in maximum demand (KW & KVA). 
Voltage Optimisation is not the same as Power Factor Correction.

What might an average VPO return on investment look like?

Site with lots of refrigeration or HVAC equipment and a 24/7 operation:

1. Energy bill saving 10-15% normally

2. Return on Investment
–2-4 year simple payback
–ROI 25% – 50%

Power Factor Correction Equipment

Improving the power factor will reduce operating cost by eliminating or deferring the need for new equipment, help existing equipment last longer, and make future expansions less costly. Also, lower rating sized equipment can be used, saving unnecessary capital expense.

All this is in addition to a quick return on investment and long term savings that are realized from installing capacitor systems to improve power factor.

From the utility company’s point of view, raising the average operating power factor of the entire grid network could reduce cost from inefficiencies in the network, increase generation and distribution potential and reduce demand on the grid.

The utility can save hundreds of thousands of tonnes of fuel (and produce fewer emissions), have more transformers available and reduce the likelihood of building new power plants and their support systems.

For this reason, many utility companies charge a power factor penalty so they can recover the additional costs incurred from supporting an inefficient system.


What is Energy Management?

Energy management is the assessment, planning and execution of a strategy to maintain or improve the quality and efficiency of energy being consumed by a business. It is critical to saving energy and reducing costs for an organisation.

So what is power quality?

Power quality refers to the ability of electrical equipment to consume the energy being supplied to it. A number of power quality issues including electrical harmonics, poor power factor and voltage instability impact on the efficiency of electrical equipment. This has a number of consequences including:

  • Higher energy usage and costs
  • Higher maintenance costs
  • Equipment instability and failure

It is therefore critical that power quality be assessed as part of an energy management strategy, and that energy management is an important consideration for any business.


Where would I need an uninterruptible power supply?

An uninterruptible power supply system can be used anywhere that emergency or backup power to a load is needed. It provides near-instantaneous protection from input power interruptions, generally through the use of batteries. A UPS has a relatively short runtime, but is usually sufficient to allow for proper shutdown of sensitive equipment, start-up of a more secure power supply, or for the issue to be resolved.

A UPS is generally used to protect data loss from sensitive communication devices, to ensure the reliability of critical equipment such as in hospitals, or to provide minimum power for equipment such as emergency lighting.