How much can be saved?

Ultimately the level of energy saving achieved will be dictated by a combination of the incoming supply voltage level and the types of electrical equipment in use. The higher the supply voltage, the greater the potential to make energy savings.

However different types of electrical equipment deliver different levels of energy saving for the same reduction in voltage.

Voltage optimisation works best on inductive loads, such as electric motors that are not fully loaded (air conditioning and refrigerators, pumps and fans) and incandescent and magnetically ballasted lighting.

Energy savings that can be achieved at sites where the majority of electrical consumption is from this type of equipment can be as much as 10-15%.

Who can save?

Voltage optimisation can benefit facilities with inductive loads such as three phase induction motors, air conditioning and refrigeration including:

• Commercial, office, retail buildings and supermarkets
• Government and educational facilities
• Manufacturing, processing and warehouse operations

How does voltage optimisation work?

Network providers supply power to customers at a higher nominal value than generally required to operate equipment. They do this to ensure that all customers receive acceptable voltage levels taking into account voltage drop and customer loading on their network. This means that the voltage levels are generally higher than that required to efficiently operate equipment, and can results in over voltage issues such as overheating and malfunctions, as well as increased energy usage and costs.

Voltage optimisation devices are installed in series with the incoming supply and the end user equipment, like motors. They maintain a steady and reduced output voltage, with independent phase control that further protects electrical equipment and prolongs equipment life. Further, the ability to adjust the incoming voltage allows for a reduction in harmonics and transient voltage spikes to ensure a stable and reliable power supply to plant and equipment.

The benefits of voltage optimisation include improved power quality, less equipment maintenance, improved equipment life, and reduced energy consumption. This can provide significant cost savings.