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INFORMATION
EN / WHISPER 12 Ultra - Three phase for mobile applications / December 2008 / Copyright © 2008 Mastervolt
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single phase (or dual voltage 60 Hz). Mastervolt offers
dedicated single phase and dual voltage 60 Hz generators
Fig. 11 AVR Setting-components and terminals
The power comes from 6 or 12 wires (depending on the
alternator model) that can be connected in Star or Delta
arrangements to take off different voltages. For tri phase
230/400V, the alternator should be connected in a Star
arrangement. For three phase 230V, the wires should be
connected in a Delta arrangement.
Further technical data on the connections of the alternator
can be found in drawings and diagrams in this manual.
See section 2.5.17 (6 wires) or section 2.5.18 (12 wires).
2.5.2 Engine
The Whisper 12 ULTRA generating set is based on the
Mitsubishi S4S2 4 cylinder 4 stroke diesel engine. The
engine is indirectly injected. The engine is water cooled
and the cooling liquid is cooled by a radiator.
The engine has been specially adapted for the Mastervolt
application and is very different from the standard engine
supplied for industrial applications!
2.5.3
Digital Diesel Control system
The standard electrical engine control system is 12 Volt
negative earth, non earth return (ungrounded) is available
as option. Check your identification data to determine
which system is applied. The system is designed
according to the "energise to run" system. The Digital
Diesel Control is a very advanced microprocessor based
full automatic system. Besides automatic start the system
offers many monitoring options. Refer to the separate
Digital Diesel Control users manual.
The microprocessor unit is located in the black box on top
of the alternator (see figures 3 and 8)
2.5.4
Battery charger
On the engine is an alternator generating 50 Amp 12V.
This current is rectified to charge the battery. The voltage
is regulated at ±14.4V.
2.5.5
Alarms and shut down
In the event of malfunctioning this will be indicated by the
failure LED, details will be shown on the display and the
engine will be shut down. There are three functions
guarded: oil pressure, coolant temperature and alternator
temperature.
Too high alternator temperature indicates lack of fresh air
or too high environmental temperatures for cooling of the
alternator.
All alarm switches are closed when no malfunction occurs.
A contact is cut in the event of an alarm. This means that
the generating set will not work when the alarm switches
are broken or there is a loose wire. The system therefore
is intrinsically safe. The panel will display details about the
alarm.
2.5.6 Monitoring
Refer to the operating of the Digital Diesel Control
2.5.7 Control
The generating set can be operated by push buttons on
the panel on the alternator or by the remote control. By
pushing the START button the control system is activated
and will start the engine automatically. Pushing the STOP
button will stop the engine and the electrical system will be
deactivated.
2.5.8
Remote control
All wiring connections from the remote control to the board
are made by plug in connectors.
An intermediate communication cable is in the standard
supply. If necessary an optional longer 8 wire
communication cable can be connected if the standard
length does not suit the required distance. Numerous
remote control units can be put in parallel by using the
connectors on the back of the units. (Refer to installation
instructions)
2.5.9
Hour counter
The remote control offers several timer functions that
helps to schedule maintenance.
2.5.10 Load indicator
On the remote control the load will be indicated on the
display and by the LED-bar. The load is measured by a
current transformer on the alternator.
2.5.11 Fuel specification
The engine must only be used with diesel fuel oil which
conforms to the standards for use in modern diesel
engines. Fuel free from water and contaminants is of the
utmost importance.