Data Sheet for Product
CK1N9836en
21.03.2001
Siemens Building Technologies
Landis & Staefa Division
9
836
SICLIMAT™
Uninterruptible Power
Supply
USV
Ensures an uninterrupted supply of power to the SICLIMAT X-OS operator station
in the event of mains interference or power failure.
Use
The single-phase USP is simply connected between the mains supply and the electrical
load. The standard serial port is used for communication with the X-OS. The USPs are
the "on-line" type, i.e. the connected electrical loads are powered continuously by the
USP, isolated from any mains interference and free of interruption.
In normal operation a rectifier converts the AC mains voltage into a DC voltage which
supplies the electrical energy for the inverter. At the same time, the internal battery is
kept fully charged.
The inverter powers the connected loads with a very stable sinusoidal AC voltage. With
extreme long-term overload or load short-circuits, the system switches to the internal
bypass. This happens when the output-voltage tolerances are exceeded (change-over
criterion).
Visual and audible alarms indicate the current operational status, which is transferred to
the connected computer via the integral computer port. With a partially discharged
battery, an audible warning is triggered when the remaining hold-up time (at nominal
load) drops to only 3 minutes.