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Another option 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 fig. 29. 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 wants to apply other settings than the factory
settings refer to the DDC User Manual, especially to the
APPENDIX.
2
STARTER BATTERY
For starting, the Whisper requires a 12V starter battery with
the following capacity:
Model
W-SQ- PRO 15
W-SQ- PRO 18
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.
230VAC
IVO 12/10
A
B
+
-
12V
Fig. 27: 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 mobile/land
applications having the starter battery of the vehicle engine
June 2021 W-SQ-Pro 15 and W-SQ-Pro 18
Minimum capacity
55Ah
80Ah
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 mobile/land
applications's main battery and the starter battery. Also a
small charger can be used to charge the starter battery only,
such as the WBC-Handy 70. A battery switch and a charger
are included in the battery installation kits, art. no.
40230210 (70Ah) or 40230220 (160Ah).
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, fiberglas etc.
(non metal, not electrical conductive) 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
room. Ensure that the supplied battery
cable connectors are properly fitted and
never remove during or shortly after
charging as sparking can occur, which
may ignite the hydrogen gasses. AC power
system (230 / 400 Volt)
The electric power supplied by the
generator is of a high voltage and
dangerous to living creatures. Before
working (installation) on the system read
the sections on safety in the users manual.
17
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