Operating instructions

8
Important UPS data is monitored permanently and transferred
to the computer via USB or the RS232 interface and using the
CompuWatch software.
Features of the PROTECT A.:
♦ VI (line – interactive) protection technology
♦ Automatic voltage regulation against mains voltage
deviations (AVR)
♦ Microprocessor control for high reliability
♦ Modern battery management with integrated protection
against exhaust. discharge and overloading
♦ User-friendly LC display
with optimum legibility
♦ Intelligent monitoring system
with USB and RS232 interfaces
♦ Overvoltage protection (RJ11/RJ45)
for fax, modem, phone and network
♦ CompuWatch software for shutdown, status messages
and measurement values for all major operating
systems (incl. Windows, Mac, Linux)
♦ Compact design
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 batteries are 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