Regal 53 SC Owner's Manual page 80

MASS COMBI BATTERY CHARGER-INVERTER SIDE
Inverter Theory- The purpose of the inverter as part of
the Mass Combi component is to change 12 volt DC to
120 volt AC. It has the ability to pass 120 volt AC current
through its internal contacts to the 3 position 120 volt
sub panel located at the ship's MDP. This panel supplies
AC current to feed downstream components.
Operation- In operation the components function as a
"feed through device". Shore power most often travels
through the shore cord hose reel to the isolation trans-
former and fi nally to the inverter breaker on the star-
board 120 volt leg of the main distribution panel (MDP).
When this breaker is activated, the current travels to the
Mass Combi AC input contacts. Then the Combi unit
passes the AC current to a set of "fast break" output ter-
minals. At this point the AC current travels back to the
MDP where the current is terminated at a 3 position 120
volt sub panel shown to the right.
As the sub panel breakers are activated 120 volt power
is sent to select components. Refer to the following sub
panel for more detailed information.
When shorepower is not available, the inverter unit will
automatically utilize the HOUSE 12 volt battery to invert
voltage from 12 volt DC to 120 volt AC at the 3 position
MDP sub panel.
There are two ways to stop the inverting process. The
inverter can be turned off at either the Mass Combi unit
face switch, or by using the remote control panel at the
MDP to cycle the combi unit off. Simply press the touch
screen to the off position. See the ICC remote panel in
this chapter.
Before attempting any Mass Combi maintenance it is im-
portant to remember the invert process is programed to
be automatic.
The inverter may be turned off in two ways in order to
safely service the Mass Combi unit. One method is to
turn off the 120 volt inverter breaker on the 240v/120v
MDP or by removing shore power from the vessel. An-
other way is to turn the Mass Combi unit off by using the
Combi face switch.
SUB PANEL FOR INVERTER/COMPONENTS
The sub panel located at the MDP provides the following
components breaker protection:
15 Amp/ Refrigerator- This breaker provides circuit pro-
tection for the sub-zero galley refrigerator.
15 Amp/ Cockpit Refrigerator- This breaker provides
circuit protection for the cockpit refrigerator.
15 Amp/ Entertainment Center- This breaker must be
activated to use the optional satellite television or to use
the main cabin entertainment functions. It is run through
the invertor to eliminate the need to run the generator at
sea to watch television.
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Chapter 4
REFRIGERATOR
COCKPIT
REFRIGERATOR
ENTERTAINMENT
CENTER