12 May 2004 / WHISPER 15 ULTRA / USA
INFORMATION
2.5.13 Technical data
GENERAL
Model WHISPER 9,5 / 12,5 ULTRA
RPM 1800 rpm
Alternator water cooled, synchronous
Engine Mitsubishi diesel, model S3L2 (Japan)
Number of cylinders 3
Displacement 80.4 cubic inches (1318 cm
3
)
Bore X stroke 3,07 x 3,62 inches (78x92 mm)
Combustion air consumption 46 cf/m (1,3 m3/min.)
Continuous power 60Hz Whisper 9,5 ULTRA 9,5 kW; Whisper 12,5 ULTRA 12,5 kW
Cooling system indirect cooling by raw water, 4,8 - 6 US gpmin (18-22 l/min.)
Cooling water pump pto driven Mastervolt self priming impeller pump, type M12
Fuel lift pump engine electric pump (12 V DC), additional pump available upon request
Starting battery (optional) 85 Ah12V
Fuel consumption 0,53 - 1,2 US gph (2-4,5 litre/hour), load dependent
Control Digital Diesel Control including automatic start/stop
ELECTRICAL SPECIFICATIONS
Output voltage 120/240V 60 Hz alternating current (AC) single phase - dual voltage
Output rating 60Hz Whisper 9,5 UlLTRA 9,5 KVA = 9,5 kW;
Whisper 12,5 ULTRA 12,5 KVA = 12,5 kW at power factor cos phi = 1
Voltage tolerance ± 5% (Optional voltage regulator± 2%)
Frequency tolerance ± 5%
Optional electronical Governor ± 1% Whisper 12,5 ULTRA
Alternator brushless, four pole, synchronous
Voltage regulation capacitor (+ AVR optional)
MECHANICAL SPECIFICATIONS
Supply includes generating set, built into tugged GRP sound shield with steel base plate,
mounted on rubber anti vibration mounts
Dimensions hxwxd 35,4 x 24,21 x 27,17 inches (900 x 615 x 690 mm)
Colour top white, bottom green
Weight 640 lbs, 290 kg including canopy
Max. installation angle 25 degrees
Standard supplies remote panel (± 45 ft., ±15 m cable), fuel filter, fuel lift pump, user and installation
manuals
Optional installation kits, mobile (vehicle) version, non earth return (ungrounded),
spare part kits, PTO to drive hydraulic pump
2.5.12 Cooling liquid
The engine is cooled by cooling liquid. The capacity of
this system of the Whisper 9,5 / 12,5 ULTRA is 2,7 US
qts. (2,5 litres.)
We recommend not using water but cooling liquid that is
marketed for the use in combustion engines. Cooling
liquid protects the engine against frost until minus 25° C.
Also it protects the engine block against corrosion. One
can fill the engine via the filling cap on the exhaust
manifold. Fill up till the level is just below the filling cap.
When the engine is on temperature the liquid will expand
and the redundant liquid will be pressed into the
expansion tank. This tank has to be filled up till the mark.
When cooling liquid is not available clean fresh water
could be used with an additive of anti freeze. When using
water with anti freeze the right mixture has to be cal-
culated according to the information of the supplier of the
anti freeze. When the cooling is based on keel cooling or
radiator cooling the capacity of these coolers and piping
has to be taken into account calculating the right mixture.
The cooling liquid in the engine is pressurised and has a
boiling point above 212°F (100° C). The temperature
switch in the thermostat housing switches at 230°F
(110° C). When keel cooling or radiator cooling is applied
the cooling system is not pressurised. There should be a
special cap on the manifold without valves leaving the
connection to the expansion tank open. Refer to the
special manual on keel cooling and radiator cooling.
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