ELECTRICAL INSTALLATION
12
W-GV/2, W-GV/3, W-GV 8 and W-GV 10 —
March
2015 — EN
3.5
AUTOMATIC STARTING AND STOPPING
3.5.1
General
WhisperPower cannot be held responsible for
damage caused by the genverter running
unattended using the auto-start/stop mode or
interval mode.
Using the auto-start/stop or interval mode, the
genverter may start unexpectedly. When working
on the electrical system, the 3 Amp fuse must be
removed from the control panel and the battery
plus cable must be removed from the battery.
Included in the delivery are warning stickers to be
applied on several parts of the electric installation
(transfer switch, distribution box, etc.) to warn
against possible automatic starting of the
genverter.
The WhisperPower Digital Diesel Control system offers several
options for automatic starting and stopping. This menu as well
as other DDC menus may be locked. For unlocking and setting
these options, refer to the APPENDIX of the DDC user’s manual.
3.5.2
Start/stop by external switch
At the back of the DDC remote control panel (40209102), you
will have the possibility to connect two wires in order to allow
the genverter being started by an external signal. This requires
the optional 12-pole green connector ( part no. 50209119).
Two common options are shown in Figure 23, where the signal
can be provided by an external relay or by the Whisper Battery
Monitor (WBM).
Figure 23: Connection for start/stop by external signal
Another possibility is to monitor the voltage of a second battery
(not being the starter battery) and to start the genverter
automatically when this voltage drops below a set value. This
second battery is often called “auxiliary battery” or “service
battery”. It is referred to as BAT2 in the DDC menus. A sense
wire to monitor the second battery should be connected (check
polarity!) to the connector on the back of the remote panel
(Figure 21). The sense wires must be connected directly to the
second battery and be protected by a 3A fuse.
Settings:
For settings other than the factory settings, refer to
the DDC user’s manual, especially to the APPENDIX.
3.6
STARTER BATTERY
For starting, the genverter requires a 12V starter battery of at
least 55 Ah (80 Ah recommended).
The genverter can be connected to the main engine battery or
have its own 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
www.whisperpower.com
) 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.
3.7
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.
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