Why use UPS?
Based on three UPS topolgies, NSSE offers a wide range of UPS solutions to
provide an appropriate level of power protection against different power problems
and failures.
Passive Standby
(offline) solutions
supply power to the
application directly
from the mains,
filtered but without active conversion. The battery is charged from the mains. In the event of
a power cut or fluctuation, the UPS delivers stable power from the battery. The advantages
of this topology are low cost and adequacy for office environments. Passive standby
solutions are not suitable if the power supply is of low quality (industrial sites) or subject to
frequent disruptions.
Line interactive
topology is used for
protecting networks
and IT applications
against power failure,
power sag, power
surge, undervoltage
and overvoltage. In
normal mode, the
device is controlled by a microprocessor that monitors the quality of the supply and reacts to
fluctuations. A voltage compensation circuit is enabled to boost or reduce the supply voltage
to compensate for the fluctuations. The main advantage of this technology is that it enables
compensation of under and overvoltage without using the batteries.
Double Conversion
topology (on-line)
is a basis for UPSs
designed for
continuous power
protection of critical
equipment against
all nine power
problems: power failure, power sag, power surge, undervoltage, overvoltage, switching
transient, line noise, frequency variation and harmonic distortion. It ensures a consistent
quality of power supply regardless of disturbances in the incoming mains. The output voltage
is entirely regenerated by a sequence of AC to DC conversion followed by DC to AC
conversion in order to create power supply without any electrical interference. Double
Conversion UPSs can be used with any type of equipment as there are no transients when
changing over to battery power.