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HOW IT WORKS
5
3 HOW IT WORKS
3.1 SOURCE
PRIORITY
The Masterswitch 0 switches the right AC power source to
the output. Therefore the Masterswitch 0 is equipped with
a source priority. If more than one AC power source is
available, the source with the highest priority is switched to
the output.
3.2
INPUT 1: GENERATOR OR SHORE INPUT
See figure 1. INPUT 1 has the highest priority, which
means that the output is connected to INPUT 1 when grid
is available on INPUT 1. At the same time, INPUT 2 is
denied. The generator or the shore power should be
connected to INPUT 1.
When power is available on INPUT 1, the output is
transferred to INPUT 1 after a delay of approximately 10
seconds. The 10 seconds delay time provides an ‘easy
start up’ for the generator. In normal situations the
generator is stabilized after app. 3 sec. To make sure no
voltage and frequency variations will occur the delay time
is set to 10 sec. This increases the generator’s lifetime
If INPUT 1 is used to connect the shore, the delay time
can be adjusted to 0 seconds. See chapter 4.6
3.3
INPUT 2: INVERTER INPUT
INPUT 2 has the second priority. If there is no power
available on INPUT 1, the output is transferred to INPUT
2. INPUT 2 is used to connect the inverter.
In this case, the Masterswitch 0 is in a neutral state and
consumes no energy it self.
CAUTION!
During transfer between one of the power-
sources, users are not supplied with power for
a short time. Because of this, computers etc.
connected to this group might loose data.
Figure 1: Electrical diagram