Mastervolt Whisper 6 Installation Manual page 14

INSTALLATION SPECIFICATIOINS
Volt supply system, never take off 12 Volt (starting)
power from one of these batteries. This will result in
sever damage to the batteries within short time.
Disconnect the battery leads if electrical welding is to
be carried out, otherwise damage will be caused to
the diodes of the alternator.
As explosive hydrogen gases are dischar-
ged during charging, the battery should be
located in a well ventilated room. Ensure
that the supplied battery cable connectors
are properly fitted and never remove du-
ring or shortly after charging as sparking
can occur, which may ignite the hydrogen
gasses.
1.4.5 AC power system (230/ Volt)
Before working (installation) on the system
read the sections on safety in the users
manual.
Be sure that all electrical installations (including all safety
systems) comply with all required regulations of the local
authorities. All electrical safety/shutdown and circuit
breaking system have to be installed onboard as the
generating set itself cannot be equipped with such equip-
ment for every possible variation.
The vessel's power supply system should be suitable
and safe for the AC voltage which is applied and the
power that will be generated. Special attention has to be
paid on dividing the system in branches which are fused
individually.
It is absolutely essential that each and every circuit in the
on-board electrical system is properly installed by a
qualified electrician.
1 FUSE
An input fuse (from the generating set to the system)
should be installed to protect the installed electrical
system.
For the Whispers the maximum single phase current
at 230V is 25A (6), 32A (8) or 48A(12).
The fuses must be of the slow reacting type. For elec-
trical motors connected to the system, a motor pro-
tection switch must be installed.
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2 GROUNDING
The AC alternator windings are not grounded.
The housing of the alternator and all other metal parts
are grounded.
To make a connection between "neutral" and "ground"
could be necessary as part of a specific insulation
failure protection system.
Small pleasure craft in Europe is submitted to The
Recreational Craft Directive 94/25/EC. The guidelines
of this directive refer to (ISO 13297).
When the installation comply to this standard the
"neutral" and "ground" should be connected on the
generating set by connecting the blue (neutral) wire
with the terminal on which the yellow/green wire is
connected.
Warnings:
In all situations the transfer switches between
shore, inverter and generator should switch
both neutral and L1. Of course this is the case
when using a Mastervolt Masterswitch.
Be aware that insulation protection systems can be
different for different applications and even within the
ship there could be different standards for different
spaces. We did refer to the Recreational Craft Directive
that applies to pleasure craft up to 24 m of length.
Sometimes one has to comply with other standards such
as the rules of certification societies like Lloyds Register
of Shipping or Veritas, regulations for the protection of
personal, building legislation, etc. It is of the greatest
importance to have expert advice on this issue.
For safety reasons connect the main ships ground to
negative point of the generating set start battery. When a
ungrounded DC system or positive grounded DC system
is applied the battery negative should not be connected
to then main ships ground.
3 CABLE
For the power cable we recommend the use of 3 wire
oil resistant cable with a sufficient cross sectional
area. One wire for earth is included. For very long ca-
bles it is recommended to apply cables with a larger
cross section than the above mentioned.
4 TRANSFER SWITCH
A power source selector switch much be installed
between the generating set and the ship's electrical
supply system. This switch must ensure that all AC
consumers can be switched off at once. This switch
October 2004 / WHISPER 6/8/12 & 6 ULTRA / EN