7 - ELECTRIC SYSTEM 176
7.1 ELECTRIC SYSTEM
To ensure sufcient visibility in all weather conditions, your yacht is equipped
with an efcient windscreen wiper system.
The system is supplied with 24V and allows the wiper blades to be operated
through mechanical arms and variable speed. The windscreen wiper system
is controlled by the on-board monitoring system.
The electrical system of the yacht consists of three separate sections.
• Service network powered by a nominal voltage of 24V DC provided by
twelve 2V DC accumulator batteries. - 640 Ah each, connected in series
and parallel to each other. This battery bank is recharged by the 100 A
output of the service charger and by the alternator driven by the engine.
• Engine network powered by a nominal voltage of 24V DC supplied by
12V DC battery packs. - 220 Ah each, connected in series and parallel so
as to form a bench at a voltage of 24V. This battery bank is recharged by
an output of the engine charger as well as by the alternator. The engine
charger automatically disconnects when the engines are started.
• 230V utility grid powered from the shore network or, alternatively, from
the two generators present in the yacht (main generator power 27 kW,
secondary generator power 27 kW). Each generator set is powered by a
12V - 180 Ah battery located near the generator itself and is recharged
by an alternator driven by the generator itself or by dedicated battery
chargers.
The system is made with PVC insulated cables, and further protected by
sheaths and/or ducts in self-extinguishing PVC.
The protection of the single portions of system is entrusted to fuses and
magneto-thermals of different capacity and sizes according to the absorp-
tions of the single uses to be protected as well as to the section of the cables
used for their power supply. All wet metal parts are interconnected with equi-
potential bonding and connected to sacricial anodes on the submerged
structure.
A monitoring and control system for user status, levels and navigation pa-
rameters is connected to the normal electrical system.
The most important contribution to safety will come from the way the sys-
tem is used and its regular maintenance. It should not be forgotten that the
electrical system, like any other on-board system, is subject to the stresses
and vibrations of the hull, and is located in an environment characterized by
high salt moisture and therefore requires periodic checks to conrm its good
condition.
CAUTION
Before undertaking any navigation, check that the batteries are in good
condition and that they supply the correct nominal current.
CAUTION
During navigation both the button switch of the service batteries and the
button switch of the engine batteries must always be connected, that is
positioned to ON. The parallel button switch on the two sets must be nor-
mally disconnected and therefore set to OFF.
To Next Page
Loading...