Principle Of Operation - AEG PROTECT A. 500 Operating Instructions Manual

♦ Overvoltage protection (RJ11)
♦ CompuWatch software for shutdown, status messages
♦ Compact design / without fan
2.2

Principle of Operation

The UPS is connected to a shockproof socket between the
public utility's mains and the loads to be protected.
Under normal operating conditions, i.e. if PROTECT A. is
supplied with mains voltage, the battery charger will ensure
that the battery is always completely charged.
During this operating status, the loads connected to
PROTECT A. are supplied with voltage via mains filters which
provide effective protection against mains voltage peaks and
high-frequency faults.
In case of sustained mains undervoltage or overvoltage within
defined ranges, the automatic voltage regulator (AVR) further
stabilises the load voltage. As a result, voltage fluctuations in
the public utility's mains are reduced to a level which is
acceptable for the loads. This is performed without recourse
to the internal energy storage, something which in turn has a
positive effect on battery availability.
Mains
for fax, modem and phone
and measurement values for all major operating
systems (incl. Windows, Mac, Linux)
Line
filter
~
Rectifier
UPS Block diagram PROTECT A.
A. V. R.
~
Inverter
Battery
8
Load