11
Loom
The main loom is supplied in two parts, the three main
phase cables are together in one part, and the second
part has smaller wires. These two looms connect the
controller to the generator, which allow the controller
to accurately control the generator output. The
loom with the three phase cables transports the AC
power from the generator to the controller where it is
rectified to 48V DC. The loom with the smaller cables
brings temperature inputs from the engine, generator
and ambient to further optimise generation. We also
use this loom to detect when gear is selected, which
allows propulsion to always be prioritised.
Inverter/Charger
We recommend fitting an inverter/charger suitable for
giving you all the AC power you need, which is how the
48V DC is converted into either 110V or 230V AC. The
charger element of the inverter is used to maintain
the 48V batteries when shore power is available. It
is advised that the inverter be placed as close as
practicable to the batteries, and that the cable be
upsized to prevent potential ripple under load.
DC-DC Converter
The DC-DC converter, gives a trickle charge from the
48V battery storage bank to the 12V/24V house banks.
This is often a setting that must be set to the house
bank float voltage, and is normally left on at all times.
This should be set to ‘float voltage’ for the house bank.
On/Off Switch
The Integrel switch should be left on at all times,
therefore it should be located in a position where it
cannot be knocked. The Integrel system uses a very
small amount of power in sleep mode but can draw up
to 15A whilst generating. The supplied switch panel
also has a switch for the DC-DC converters to allow
the owner to turn these off should the boat be left
without shore power.
Controller
The main controller should be sited in a dry location
within a 3m cable run of the generator. The system
needs reasonable airflow and under heavy load can
become hot, so please consider the location carefully.
4. SYSTEM SCHEMATICS
A detailed schematic is provided for each particular
installation and should be followed closely. Each circuit
within the schematic has been designed in the light of
many years of experience and no changes should be
made without referring back to Triskel Marine.
A few basic principles are illustrated in the attached
schematics:
• Each battery bank is individually connected to the
48V power busbars (positive and negative) and must
not be paralleled together in any other way. Each of the
banks is fitted with a battery sensor which monitors
battery state of charge and determines the charging
voltage. If the batteries are not individually connected
to the busbar, the state of charge calculation will be
wrong.
• We normally fit a permanently live 12V busbar
supported by a DC-DC converter from the main energy
storage batteries and by the 12V house battery bank.
This allows the Integrel controller to be left energised
when the rest of the boat is powered down, in order to
keep track of the battery state of charge. If the system
is fully powered down, state of charge will be reset on
the next occasion that the batteries are charged to
100%.
• Cable and fuse sizing in the schematics is based on
ISO 10133 and ABYC E-11. Guidance is provided in
annex B.
• Overall management of the system is provided by
the controller which receives information from all of
the system components via a closed data network.
Data cables are fitted to each device and may be daisy-
chained together, connected in a star configuration or
a combination of the two.
• You may require multiple battery sensors, please
ensure you have the required number of sensors and
cables.
