ELECTRICAL INSTALLATION
W-GV4 Scalino outdoor — April 2017 — EN
9
3
ELECTRICAL INSTALLATION
3.1
ENGINE CONTROL SYSTEM
Engine control (standard 12V) is incorporated in the PMG
Power Module for Genverter. Use the PMG box or its remote
control panel to operate the genverter.
3.2
STARTER BATTERY
For starting, the genverter requires a 12V/55 Ah starter battery.
We strongly recommend the use of a separate battery for the
genverter and keeping the wiring system for the car engine and
the domestic DC supply system completely separate and
individually connected to separate batteries.
However, the negatives of all the batteries on the vehicle
should be interconnected to avoid difference in the voltage
level of the earth on different places causing trouble to
electronic devices which might be in the system.
The above recommendation is not valid for vehicles having the
starter battery of the vehicle engine or other auxiliary
equipment positive grounded. When this is the case an expert
should be consulted.
The starter battery is charged by the alternator on the engine.
However, when the genverter is not used for an extended
period of time, its control system may eventually drain the
starter battery. The WhisperPower catalogue (check
) offers several solutions to prevent
this from happening:
A battery switch may be installed to interrupt the positive
connection.
An AC-supplied battery charger may also help to keep the
battery in good condition when the genverter is not used
(see also battery installation kit).
WhisperPower also offers high efficiency battery charging
units which are able to charge both the vehicles’s main
battery and the starter battery.
3.3
OTHER RECOMMENDATIONS AND WARNINGS
The battery should be secured for poor road conditions and the
terminals should be insulated. For extra safety the battery can
be enclosed in a wooden, plastic, fiberglass etc. (non metal)
box. Even when the earth return system is applied a negative
battery cable should be used and the vehicle should not to be
used as a conductor.
The battery cables are supplied in a standard length of 1.5 m. If
longer cables are required a larger cross sectional area should
be considered to compensate for voltage reduction.
When two batteries are used in series to provide
a 24 Volt supply system, never take off 12 Volt
(starting) power from one of these batteries. This
will result in severe damage to both batteries
within a 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 may be discharged
during charging, the battery should be located in
a well-ventilated space. Ensure that the supplied
battery cable connectors are properly fitted.
Never remove these during or shortly after
charging, as sparking may occur, igniting the
hydrogen gases.
3.4
ALTERNATING CURRENT
The electric power supplied by the genverter is
of a high voltage and dangerous to people.
Before working on the system read the sections
on safety in the users manual.
Be aware that people are not used to have AC
available on a vehicle. Put warning signs on wall
sockets and on junction boxes. Instruct non-
regular users of the vehicle. Warn maintenance
personnel of garages that do service on the
vehicle.
Generators used on vehicles that are operated in
a hazardous environment often have to fulfil
special regulations and additional measures have
to be taken accordingly.
These genverters are designed to generate power for both AC
and DC installations, depending on the type of WhisperPower
PowerCube or Power Module installed with the genverter. Be
sure that all electrical installations (including all safety systems)
comply with all regulations required by the local authorities. All
electrical safety/shutdown and circuit breaking systems have to
be installed on board as the genverter itself cannot be
equipped with such equipment for every possible variation.
The vehicle’s power supply system should be suitable and safe
for the voltages 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
electrical system be properly installed by a qualified electrician.
3.5
CABLE PROTECTION (FUSES)
It is the installer's responsibility to protect the live wires
between the genverter and the PMG/DC PowerCube. Check the
electrical information on the identification plate in order to
calculate the right fuse size.
Please note that the above is in addition to any fuses required
between the PMG/DC PowerCube and the AC installation or
batteries, as applicable.
3.6
GROUNDING
The AC alternator windings are not grounded.
The housing of the alternator and all other metal parts are
grounded to the base plate by means of a braided strap.
Assuming that the sound shield is bolted to a metal surface, this
should provide adequate grounding. In case of doubt, an
additional grounding cable should be connected.
