Voltage optimisation is an electrical energy saving technique which
is mainly installed in series with the mains electricity supply to
provide a reduced supply voltage for the site's equipment.
Typically, voltage optimisation can improve power quality by
balancing phase voltages and filtering harmonics and transients
from the supply, although not always. Voltage optimisers are
essentially transformers used to deliver power at a reduced voltage
from the raw mains supply.
Electrical equipment is designed to accept a wide range of input
voltages about its nominal design center. However, if the actual
supply is higher than necessary the equipment will consume more
power than needed and in many cases, equipment life is reduced,
effectively increasing the cost of ownership.
A 230V linear appliance operated at 240V will consume approximately
9% more energy than necessary. A voltage reduction within statutory
limits can produce up to 25% (subject to load) reduction in energy
consumption and in addition will extend the life of many types of
By reducing supply voltages to a controlled, site adjustable level,
our Voltage Optimization Unit (VOU) allows equipment to operate at
optimum efficiency. The result is lower overall running and
ownership costs and reduced carbon footprint – each kWh of
electrical energy saved is equivalent to 0.537kg of CO2.