Calira VS 50ph, Operating Instructions Manual, Page: 14 / 32

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Purpose
The VS 50ph mains supply unit is a power supply device for all 12V consum-
ers, therefore including audio equipment and devices with electronic control
(e.g. heating, boilers and transistor lights...) supplied by the 230V a.c. power
mains.
It incorporates a method of switching automatically from mains to battery
operation. When operating from the mains, the connected consumer is supplied
by means of the built-in transformer, connected rectifier and a filter chain with
12 V filtered direct voltage (total output power 50 VA (Watt)).
If the mains supply is interrupted, the VS 50ph mains supply unit switches
automatically to battery operation. Then the supply to the connected consumer
comes from the 12 V input from the connected supply battery or car battery.
Inappropriate use
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The mains supply unit must not be used to charge lead batteries, nickel-
cadmium batteries or non-rechargeable batteries.
When charging these battery types with the mains supply unit, the outer cover
may rupture explosively.