INSTALLATION
16
December 2016 / W-SQ20 / EN
by an emergency switch or a potential free fire alarm
switch with normally closed contacts.
Fig. 25: Connection for emergency stop / fire alarm switch
Automatic starting and stopping
Automatic start/stop
WhisperPower cannot be held responsible
for damage caused by the unattended
running generator using the auto-
start/stop mode or interval mode.
Using the auto-start/stop (interval) mode
the generator can 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.
The WhisperPower Digital Diesel Control system offers
several options for automatic starting and stopping.
Access to this menu and other menus could be blocked.
For de-blocking and setting up this options refer to the
APPENDIX of the DDC user
’s manual.
One of these options is to monitor a second battery (not
being the starter battery) to start the generator
automatically when the voltage of this battery drops below
a certain setting.
Other names for this second battery are “auxiliary battery”,
“service battery”, ”users battery” or “consumers battery”.
We will refer to this battery as “the second battery” (BAT2).
In some menus the starter battery could be indicated as
“the first battery” (BAT1).
A sense wire to monitor the second battery should be
connected (attention polarity!) to the connector on the
back of the remote panel. Refer to figure 24. The sense
wires must be connected directly on the second battery
before a main switch and be protected by a 3 Amps fuse.
(Monitoring the generator starter battery does not require
an extra sense connection)
Settings
When one want to apply other settings than the factory
settings refer to the DDC
user’s manual, especially to the
APPENDIX.
2
STARTER BATTERY
For starting, the generator set requires a 12V starter
battery with the following capacity:
Model
Capacity
W-SQ20
120Ah
The generating set can be connected with the main engine
battery or have its own battery.
We strongly recommend the use of a separate battery for
the generating set and to keep the wiring system for the
vehicle engine and the domestic DC supply system
completely separate and individually connected to
separate batteries.
Figure 26: Starter battery
However, the negative 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.
A battery switch may be used to interrupt the positive
connection.
The starter battery is charged by the alternator on the
engine. An additional battery charger will help to keep the
battery in good condition when the generating set is not
used.
A battery charger is not included in the standard supply. A
high efficiency battery charging unit can be ordered from
WhisperPower which is able to charge both the
vehicles’s
main battery and the starter battery. Also a small charger
can be used to charge the starter battery only, such as the
Remove bypass
between J7 - J18
Normal operation
Alarm / emergency
local control panel
(rear view)
