Ac Power System 230 Volt - Mastervolt whisper 3,5 Installation Manual

"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. 12. 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 users manual,
especially to the APPENDIX.
2 STARTER BATTERY
For starting, the Whisper requires a
battery with a capacity of at least 55
Ah. The generating set can be
connected with the 12V main engine
battery or with its own battery,
however we strongly recommend to
use a separate battery
generating set and to keep the wiring
system for the vehicles engine and the domestic DC
supply system completely separate and individually
connected to separate batteries.
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.
A battery switch is recommended to be used to
interrupt the positive connection.
The starter battery is charged by the alternator of the
generator. An additional battery charger will help to
keep the battery in good condition when the
generating set in not used.
3 12V OR 24V DC TO DRIVE THE FAN
When applying 12V or 24 V DC to drive the fan of the
radiators the fan should be wired with minimum 4
mm2 cable according to the wiring diagram. The
negative return wire should be of the same diameter.
The return current should never be lead over the
chassis.
The consumption of power by the 12V DC powered
July 2005 / MOBILE WHISPER 3,5 / EN
230V AC
IVO 12/10
A
for the
fan makes it necessary to install an additional 30
Amps battery charger to prevent the starter battery to
be drained. A much larger battery (120 Ah) is
required. The battery charging winding in the
generating set is not capable of powering the fan.
Neither is the small charger that is included in the
battery kit. Mastervolt supplies high quality battery
chargers that continuously supply the rated power.
Chargers of other suppliers are often rated to other
standards and give the rated current (Amps) only for
a short period if at all. Using 24V separate batteries
to power the fan also require a large battery capacity
and 24V/ 25 Amp charger.
To avoid the need of an extra heavy battery charger a
230 Volt fan on the radiator is recommended. One
should realize that the power for the fan is to the cost
of the output power. (Refer to paragraph 4.2)
B
12V
4 OTHER RECOMMANDATIONS AND WARNINGS
The battery should be secured for poor road condi-
tions and the terminals should be insulated. For extra
safety the battery can be enclosed in a wooden,
plastic, Fiberglas etc. (non metal) box. Even when the
earth return system is applied a negative battery ca-
ble should be used and the vehicle should not 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.
Never take off 12 Volt from one battery off
a 24-Volt battery bank (12-Volt batteries
that are in series). This will cause serious
damage to the batteries in 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.
INSTALLATION
Figure 23
13