4 Introduction
This manual should inform you essentially about one-phase online UPS-
systems and its functioning, the application of several functions and about what
to do in case of service disturbances. Furthermore this manual includes
applications for transport and storage as well as handling and installation of the
UPS-systems. The directives for planning in this manual, are only regarding to
the special demands of UPS-systems. Comply with the national, local
directives for electronic installation when installing the UPS. The content of this
manual can change due to developing technologies. We aimed to make the
content correct and clear. Please do not hesitate to contact us, f you discover
any errors. E.&O.E. We are not liable for any consequential damage due to
errors & omissions.
The UPS-system is created to protect sensitive electric machines for example
computers, workstations, electronic cases, critical instruments,
telecommunication stations, process control, etc. from interruptions, which can
be caused by bad current quality or power failures. Sensitive machines need a
good protection from interruptions. Those interruptions can have external
causes (as storms, breakdowns) or interruptions caused by close-standing
machines (as motors, air conditioning, machine tools, welding tools, and
others). Those interruptions can be summarized as follows:
Fast and slow circuit voltage peaks, current fluctuations;
Power failures;
Fast and slow frequency peaks, frequency fluctuations;
overload or transients
The UPS conditions the circuit voltage and ensures that the voltage values at
the output to the connected charge, remain constant. Therefore circuit
interruptions cannot reach critical instruments and so they cannot make
damages on software, hardware or cause data losses or breakdowns.
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