1. Incoming voltage – typically around 240V for sites in the UK – is
brought to the optimum
operating level for most equipment at around 220V. Equipment
downstream will then
consume less energy than with the over-voltage conditions normally
prevalent in the UK.
In motors, for example, over-voltage drives the core into
saturation, which wastes energy
as heat. The powerPerfector
corrects this with 99.9% efficiency
across its entire
operating range, so the resulting savings are not offset by energy
loss in the unit itself.
2. Voltages on the three supply phases are balanced by the
regulating effect of the
powerPerfector’s star-connected secondary windings. Improvements in
phase balancing
of over 20% have been observed, which dramatically increases the
efficiency of 3-phase
AC motor equipment, common in air distribution systems.
3. A harmonic filter is integrated into the design of the
powerPerfector, giving an attenuation
in Total Harmonic Distortion (THD). As harmonics are potentially
damaging to electronic
equipment, and known to reduce the efficiency of HV transformers,
this is an important
function that delivers tangible energy-saving benefits. After a
powerPerfector
installation,
a site is generally in compliance with the G5/4 requirements on
harmonic emissions.
4. As a result of the improvements in power quality, a typical
powerPerfector
installation will
bring the Power Factor of a site closer to unity by 0.02 – 0.1. This
may alleviate the need
for additional Power Factor Correction (PFC), although the
powerPerfector is fully
compatible with this type of equipment. Considerable reductions in
reactive power have
been achieved, reducing penalty charges from electricity suppliers.
5. The
powerPerfector
will protect a site from transients up to
25kV, which can have a
devastating effect on sensitive electronic equipment. As transients
become more
common due to increased switching on the grid, this provides a vital
defence for critical IT
systems.
