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Technical Data
4000 Series
4012-46TWG4A
Diesel Engine - ElectropaK
Basic technical data
Number of cylinders .. ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... . 12
Cylinder arrangement ... ... ... ... ... ... ... ... ... ... ... ... ... ... Vee 60°
Cycle . ... ... ... ... ... ... ... ... ... ... ... ..4 stroke, compression ignition
Induction system ... ... ... ... ... ... ... ... ... ... ... ... ... ... turbocharged
Combustion system... ... ... ... ... ... ... ... ... ... ... ... . direct injection
Compression ratio . ... ... ... ... ... ... ... ... ... ... ... ... ... .13:1 nominal
Bore... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... 160 mm
Stroke ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... 190 mm
Cubic capacity... ... ... ... ... ... ... ... ... ... ... ... ... ... ... . 45,842 litres
Direction of rotation ... ... ... ... ... Anti clockwise viewed on flywheel
Firing order ... ... ... ... ... ... ... 1A,6B,5A,2B,3A,4B,6A,1B,2A,5B.4A,3B
Cylinders 1 ... ... ... ... ... ... ... ... ... ... ... ... ... furthest from flywheel
Note: Cylinders designated ‘A’ are on the right hand side of the
engine when viewed from the flywheel end.
Total weight of ElectropaK
Engine (dry)... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... 4440 kg
ElectropaK (wet) (1) (2) .. ... ... ... ... ... ... ... ... ... ... ... ... ... 5615 kg
1. Includes fuel cooler.
2. Includes engine lubricating oil and water jacket.
Overall dimensions of ElectropaK
Height ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... .. 2255 mm
Length ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... .. 3714 mm
Width . ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... .. 1780 mm
Moment of inertia (mk²)
Flywheel ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... . 9,57 kgm²
Engine ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... . 9,73 kgm²
1500 rev/min
Cyclic irregularity
For engine/flywheel maximum ... ... ... ... ... ... ... ... ... ... ... .. 1:752
Ratings
Steady state speed stability at constant load . ... ... ... ... .. ± 0,25%
Electrical ratings are based on average alternator efficiency and are
for guidance only (0.8 power factor being used).
Operating point
Engine speed ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... 1500 rev/min
Static injection timing . ... ... ... ... ... ... ... ... ... ... ... .spill timing 20°
Cooling water exit temperature .. ... ... ... ... ... ... ... ... ... ... < 98 °C
Fuel data to conform to: . ... ... ... ... ... ... ... ... ... BS2869 class A2
Performance
Note: All data based on operation to ISO 3046/1, BS 5514 and
DIN 6271 standard reference conditions.
Highest estimated sound pressure level at 1 metre ... ... 111 d(B)A
Additional noise data is shown at rear of this document
Test conditions
-air temperature.. ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ...25 °C
-barometric pressure .. ... ... ... ... ... ... ... ... ... ... ... ... ... ...100 kPa
-relative humidity ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... 30%
-air inlet restriction at maximum power (nominal)... ... ... ... 2,5 kPa
-exhaust back pressure at maximum power (nominal)... ... 3,0 kPa
-maximum fuel temperature (inlet pump) ... ... ... ... ... ... ... ...58 °C
For engines operating in ambient conditions other than the standard
reference conditions stated below, a suitable de-rate must be
applied. De-rate curves for increased ambient temperatures and /
or altitude are available on the Perkins Intranet site.
For test conditions relevant to data on load acceptance, please refer
to Cold start recommendations on page 9 of this document.
General installation - 4012-46TWG4A 50Hz (Temperate cooling)
Designation
Units
Gross engine power
kWb
Fan and battery charging alternator power
kW
Type of operation and application
Prime
Standby
1308
1396
54
Net engine power
kWm
1254
1342
Brake mean effective pressure (gross)
kPa
2283
2436
Combustion air flow at ISO conditions
m³/min
113
Exhaust gas temperature (max) after turbo
Exhaust gas flow (max) at atmospheric pressure
°C
118
470
m³/min
285
Boost pressure ratio
:1
3,4
3,6
Mechanical efficiency
%
91
92
Overall thermal efficiency (nett)
%
39
Friction and pumping power losses
kWm
38
120
Mean piston speed
m/s
9,5
Engine coolant flow
l/min
948
Typical GenSet electrical output (0.8pf)
Assumed alternator efficiency
kVA
1500
kWe
1200
%
1600
1280
96
Note: Not to be used for CHP design purposes (indicative figures only). Consult Perkins Engines Stafford Limited. Assumes complete
combustion.
Rating definitions
Prime Power
Variable load. Unlimited hours usage with an average load factor of 80% of the published Prime Power over each 24 hour period. A 10%
overload is available for 1 hour in every 12 hours operation except where stated.
Standby power
Limited to 500 hours annual usage with an average load factor of 80% of the published Standby Power rating over each 24 hour period.Up
to 300 hours of annual usage may be run continuously. No overload is permitted on Standby Power.
Emissions capability
All 4012-46TWG ratings are optimised to the ‘best fuel consumption’ and do not comply to Harmonised International Regulation Emission
Limits. More information on these statements can be obtained by contacting the Applications Department at Perkins Engines Company
Limited.
FRONT GROOVE
IN PULLEY
LUB.OIL FILLER
CRANKSHAFT PULLEY 5 GROOVE
FOR SPB & B SECTION BELTS
TO BS3790:1995
FAN
LOW OIL PRESSURE
SWITCH. 1 EACH SIDE.
RADIATOR WATER
LEVEL SWITCH
LUB.OIL DIPSTICK
533
19
GROOVE CRS
FUEL LEAK-OFF
CONN.
1312
FRONT FACE OF C/CASE
391
2236
SUMP DRAIN PLUG G1"
(BOTH SIDES)
G1/4" TAPPING FOR
LUB. OIL PRESS. CONN.
786
73.5 FUEL LEAK-OFF
NO FUEL COOLER FITTED
1618
3750
OVERALL LENGTH
ø 26.5 HOLE REAR
1280
25
TURBOCHARGERS
IS EXERTED ON
TO ENSURETHAT NO LOAD
ADEQUATELY SUPPORTED
PIPEWORK MUST BE
FLANGE DETAIL. SYSTEM
1 EACH SIDE. SEE
EXHAUST OUTLET ELBOW
1 EACH SIDE
ENGINE ONLY
LIFTING BRACKET
COOLANT DRAIN TAP.
1 EACH SIDE.
CRANKCASE INSPECTION
COVERS
CRANKSHAFT
REAR FACE OF FLYWHEEL HSG.
B BANK
SIDE VIEW
G3/8" TAPPING FOR
LUB. OIL TEMP. CONN.
LUB. OIL COOLER
1 EACH SIDE
189
4012-46TWG4A Temperate - left view
REAR FACE OF C/CASE
4012-46TWG4A Temperate - front view
1873
CRS
936.5
RADIATOR FILLER
0.7 BAR RELIEF VALVE
FUEL COOLER WHEN FITTED
G 3/8" AND G 1/2" TAPPINGS IN
THERMOSTAT HOUSING 1 EACH SIDE
Rp 1/2" TAPPING IN THERMOSTAT
HOUSING. 1 EACH SIDE
1805
OVER MATRIX
701
902.5
513
510
FUEL COOLER
CONNECTIONS
513
16 SLOTS 11 X 19
(FOR DUCTING PURPOSES)
ELECTRONIC ACTUATOR
THERMOSTAT HOUSING
1 EACH SIDE
FUEL LEAK-OFF CONN.
TO SUIT 15 mm O/D PIPE.
'BITE' TYPE NON-RETURN
VALVE SUPPLIED.
1 EACH SIDE.
FUEL INLET CONNECTION ø 15
OUTSIDE STEEL PIPE.
MAXIMUM FUEL LIFT 2,5 METRES
WHEN FUEL TANK OUTLET IS
LOWER THAN LIFT PUMP INLET A
NON-RETURN VALVE MUST BE
FITTED AT FUEL TANK. IF MAX.
FUEL LIFT FIGURE IS EXCEEDED
385 75
CONSULT PERKINS TECHNICAL DEPT.
CRANKSHAFT
570
385
1662
OVER
MATRIX
7 PITTCHES
@ 226
=1582
ø 20 HOLE FRONT
LIFTING BRACKET
(ENGINE ONLY) 1 EACH SIDE
235.4
ENGINE
FEET
254.5
22
294.5
FUEL FILTER/WATER SEPARATOR
RADIATOR DRAIN
PLUG G1/2"
315
370
CRANKSHAFT
641
315
353
70 CLEARANCE
REQUIRED
TO REMOVE
SUMP
TORSIONAL VIBRATION
DAMPER
G1/4" TAPPING FOR
LUB.OIL PRESS.CONN.
STARTER RELAY
DUAL 24V. STARTERS
LUB. OIL FILTERS
3 EACH SIDE
CHARGE AIR COOLER
1 EACH SIDE
EXHAUST GAS HIGH TEMP:
PROTECTION MODULE
AIR FILTERS
1 EACH SIDE.
G3/8" TAPPING FOR
LUB.OIL TEMP.CONN.
ELECTRONIC CONTROL
UNIT FOR ACTUATOR.
NO FUEL COOLER FITTED
36 FUEL LEAK-OFF CONN.
FUEL HAND-PRIMING
PUMP
FUEL LIFT PUMP
LUB. OIL PUMP
1634
C OF G WET
WITH FUEL COOLER
1635 C OF G WET
WITHOUT FUEL COOLER
605
1 EACH SIDE.
H.W.T. PROTECTION SWITCH.
12 FRONT LIFTING BRACKET
248.5
24 V ALTERNATOR
CRANKSHAFT
FUEL LEAK-OFF
CONN.
AIR FLOW
G3/4" FUEL COOLER
CONNECTIONS
981
BREATHER CONN.
1 EACH SIDE
FLEX. HOSE 51 I/DIA X865 LONG
SUPPLIED LOOSE
4012-46TWG4A Temperate - right view
FRTONT FACE CRANKCASE
4012-46TWG4A Temperate - rear view
1978
OVERALL WIDTH
1905
OVER RADIATOR
CRANKSHAFT
AIR FILTER RESTRICTION
INDICATOR. 1 EACH SIDE
301
B BANK
24 V AIR SHUT-OFF VALVE
ENERGISED TO CLOSE.
1 EACH SIDE
301
A BANK
1400
CLEARANCE REQUIRED TO
REMOVE FUEL FILTER
HEIGHT
235.4
ENGINE
FEET
ROTATION
CRANKSHAFT
25
611
2255
OVERALL
280
552.5
646
10
39
6 HOLES M16 X 30 DEEP
EQUALLY SPACED ON
ø543 (21.38") P.C.D.
11.25°
182
SUMP DRAIN PLUG
182
16 HOLES M12 X 21 DEEP
EQUALLY SPACED AS SHOWN
ON ø851 (33.5") P.C.D.
4012-46TWG4A Temperate - Support pads, exhaust outlet flange and flywheel details
ø406
8 HOLES ø 22
EQUALLY SPACED
ON ø 356 PC
22,5°
ø250
DETAIL OF EXHAUST OUTLET FLANGE
(B.S.10 TABLE D)
SCALE 1:5
10
15.7
ø 100,035
100,00
ø 571,6
571,5
ø498
ø592
ø883
ø 787,65
787,4
CRANKSHAFT
6,5
DETAIL OF SAE 518 FLYWHEEL
AND SAE 00 FLYWHEEL HOUSING
(METRIC TAPPINGS)
SCALE 1:5
300
2369
300
100
1744
60
70
4
91
98
FRONT FACE C/CASE
1000
175
6 HOLESø 22
950
REAR FACE FLYWHEEL HSG
500
39
435
CRANKSHAFT
451
1900
135
154
221
PLAN VIEW OF SUPPORT PADS
150
900
1978
Cooling system
Fuel system
Recommended coolant: 50% inhibited ethylene glycol or 50%
inhibited propylene glycol and 50% clean fresh water. For CHP
systems and where there is no likelihood of ambient temperature
below 10 °C, then clean ‘soft’ water may be used, treated with 1%
by volume of Perkins inhibitor in the cooling system. The inhibitor is
available in 1 litre bottles from all Perkins Distributors.
Maximum pressure in crankcase water jacket ... ... ... ... .. 170 kPa
Maximum top tank temperature (standby) . ... ... ... ... ... ... .. 98 °C
Maximum static pressure on pump ... ... ... ... ... ... ... ... ... 70 kPa
Ambient cooling clearance (standby power) with air temperature at
fan of 6 °C above the ambient ... ... ... ... ... ... ... ... ... ... ... ... 38 °C
Injection system... ... ... ... ... ... ... ... ... ... ... ... ... ... direct injection
Fuel injection pump/Injector type. ... ... ... ... ... . Delphi unit injector
Injector pressure . ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... 23,4 MPa
Fuel lift pump type ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ...Gerotor
Delivery flow ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... . 1020 litres/hr
Heat retained in fuel to tank ... ... ... ... ... ... ... ... ... ... ... ... 9,5 kW
Fuel inlet temperature to be less than . ... ... ... ... ... ... ... ... . 58 °C
Delivery pressure ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... . 300 kPa
Maximum suction head at pump inlet.. ... ... ... ... ... ... ... 24,5 kPa
Maximum static pressure head ..see installation manual for details
Fuel filter spacing ... ... ... ... ... ... ... ... ... ... ... ... ... ... 10 microns
Governing type ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... electronic
Governing ... ... ... ... ... ... ... ... ... ... ... ... ... ... to ISO 8528-5 2005
Torque at the governor output shaft ... ... ... ... ... ... ... ... ... . 1·631
Tolerance on fuel consumption ... ... ... ... ... ... to ISO 8528-1 1993
Total coolant capacity
Electrounit (engine only) ... ... ... ... ... ... ... ... ... ... ... ... ... 73 litres
ElectropaK
-engine and radiator ... ... ... ... ... ... ... ... ... ... ... ... ... ... ..201 litres
Maximum permissible restriction to coolant pump flow.. ... 20 kPa
Thermostat operating range... ... ... ... ... ... ... ... ... ... ... 71 - 85 °C
Temperature rise across the engine (standby power) with inhibited
coolant .. ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... 15 °C
Shutdown switch setting ... ... ... ... ... ... ... ... ... ... 101 °C (rising)
Coolant immersion heater capacity ... ... ... ... ... ... ... ... . 2 x 4 kW
Fuel specification
Fuel Density @ 15 °C.. ... ... ... ... ... ... ... ... ... ... ... .. 0,862 kg/litre
Recommended fuel . ... ... ... ... ... ... ... ... ... ... ... ... ... ... see OMM
Fuel consumption
Note: All fuel consumption figures are based on assumed fuel
density of 0.862 and Nett rated powers
Water jacket cooling data
Coolant flow ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ..948 l/min
Coolant exit temperature (max) . ... ... ... ... ... ... ... ... ... ... ... 98 °C
Coolant inlet temperature (min) . ... ... ... ... ... ... ... ... ... ... ... 70 °C
Coolant inlet temperature (max) ... ... ... ... ... ... ... ... ... ... ... 85 °C
4012-46TWG4A - Temperate
Designation
Coolant pump
Fuel consumption calculated
on nett rated powers
g/kWh
litres/hr
-speed ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... 1.4 x engine rev/min
-method of drive . ... ... ... ... ... ... ... ... ... ... ... engine (gear) driven
Standby power
219
350
100% of Prime power
217
316
Radiator
75% of Prime power
214
233
Face area... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... .. 2967420 mm²
Number of rows and material . ... ... ... ... ... ... ... ... ... ... ... ... .. 226
Fins per inch and material.. ... ... ... ... ... ... ... ... ... ... ... ... ... ... .. 7
Width of matrix ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... . 1805 mm
Height of matrix.. ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... . 1644 mm
Weight (dry) ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... . 843 kg
Total coolant capacity ... ... ... ... ... ... ... ... ... ... ... ... ... ..128 litres
Pressure cap setting (min) . ... ... ... ... ... ... ... ... ... ... ... ... . 69 kPa
50% of Prime power
220
160
Fan
Type ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ...engine driven
Diameter ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... . 1530 mm
Number of blades... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... 12
Material .. ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... Aluminium
Drive ratio... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... 1:0,9
Cooling clearance
4012-46TWG4A
Maximum additional restriction (duct allowance) to cooling
airflow, and resultant min airflow
Description
Ambient clearance:
Inhibited coolant
°C
Pa
m³/min
38
N/A
N/A
Duct allowance
38
0
1938
Minimum airflow
38
0
1938
Electrical system
Alternator
-type ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... . insulated return
-voltage ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... .. 24 volts
-output . ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... 40 amps
Starter
-type ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... (axial) electric
-motor voltage . ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... .. 24 volts
-motor power ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... . 16,4 kW
Number of teeth on
-flywheel .. ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... 156
-starter motor... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... .. 12
Minimum cranking speed ... ... ... ... ... ... ... ... ... ... ... 120 rev/min
Starter solenoid (24V)
-pull in current @ -25 °C max .. ... ... ... ... ... ... ... ... ... ... 30 amps
-hold in current @ -25 °C max. ... ... ... ... ... ... ... ... ... ... .. 9 amps
Engine stop solenoid current... ... ... ... ... ... ... ... ... ... ... 1,1 amps
Engine stop solenoid voltage .. ... ... ... ... ... ... ... ... ... ... ...24 volts
Engine mounting
Energy balance
Maximum static bending moment at rear face of block .. 1356 Nm
Maximum additional load applied to flywheel due to rotating
components... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... .. 850 kg
4012-46TWG4A - Temperate
Centre of gravity
Bare engine (wet) 4012-46TWG4A
-forward of rear face of cylinder block ... ... ... ... ... ... ... ... 658 mm
-above crankshaft centre line ... ... ... ... ... ... ... ... ... ... ... . 32 mm
ElectropaK (wet)
-forward of rear face of cylinder block ... ... ... ... ... ... ... . 1286 mm
-above crankshaft centre line ... ... ... ... ... ... ... ... ... ... ... . 32 mm
Cold start recommendations
Temperature
range
Down to 0 °C
(32 °F)
Oil: API CH4 15W40
Starter: 2 x 24 volts
Battery: 4 x 12V 286 Ah
Max breakaway current: 1600 amps
Cranking current: 810 amps
Aids: N/A
Min mean cranking speed:120 rev/min
Designation
Units
Prime
power
Standby
power
3492
Energy in fuel
kWt
3238
Energy in power output (gross)
kWb
1308
Energy to cooling fan
kWm
Energy in power output (nett)
kWm
1254
1342
Energy to exhaust
kWt
1118
1196
Energy to coolant and oil
kWt
472
537
Energy to radiation
kWt
65
69
Energy to charge cooler
kWt
275
294
1396
54
Lubrication system
Recommended multigrade oil viscosity (15W40) which adequately
meets the specifications of API CG4. For further details refer to the
engine OMM.
Lubricating oil capacity
Total system ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... . 177 litres
Sump maximum . ... ... ... ... ... ... ... ... ... ... ... ... ... ... .. 157,5 litres
Sump minimum .. ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... . 115 litres
Oil temperature at normal operating conditions . ... ... ... ... .. 95 °C
Oil temperature (in rail) - maximum continuous operation . 105 °C
Notes:
Lubricating oil pressure
z
The battery capacity is defined by the 20 hour rate
z
The oil specification should be for the minimum ambient
temperature as the oil will not be warmed by the immersion
heater
z
Breakaway current is dependant on battery capacity available.
Cables should be capable of handling the transient current
which may be up to double the steady cranking current.
minimum . ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... .. 340 kPa
At rated speed ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ...450 kPa
Oil relief opens ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ...400 kPa
Oil filter screen spacing .. ... ... ... ... ... ... ... ... ... ... ... . 20 microns
Sump drain plug tapping size . ... ... ... ... ... ... ... ... ... ... ... ... .. G1
Lubricating oil pump speed ... ... ... ... ... ... ... 1.4 x engine rev/min
Lubricating oil pump drive method . ... ... ... ... ... ... .. engine driven
Shutdown switch - pressure setting (where fitted) 193 kPa (falling)
Exhaust system
Normal operating angles
Outlet size (internal) .. ... ... ... ... ... ... ... ... ... ... ... ... ... ... 254 mm
Outlet flange size .. ... ... ... ... ... ... ... ... ... ... ... ... ... ... 10” table D
Total exhaust back pressure . ... ... ... ... ... ... ... ... ... ... ... 5,0 kPa
For pipe sizes, refer to ‘Installation Manual’
Oil consumption (prime power)
Induction system
Emissions data with combustion air temperature of 25 °C
Maximum air intake restriction of engine:
-clean filter. ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... . 2,0 kPa
-dirty filter .. ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... . 4,0 kPa
-air filter type . ... ... ... ... ... ... ... ... ... ... ... .Medium duty axial flow
-front and rear. ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... 5°
-side tilt ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... . 10°
After running-in (typically after 250 hours) . ... ... ... ... . g/kW hr 1.8
Oil flow rate from oil pump . ... ... ... ... ... ... ... ... ... ... ... ... .. l/s 6,0
4000 Series
4012-46TWG4A
Noise
Noise measured in semi reverberant environment and measured at a distance of 1 metre from the periphery of the engine.
584/485FC radiator
Noise measured at points 1 - 6
@ 1434 kWb gross
Fan
6
Position
d(B)A
1
113.5
2
113.5
3
112.0
4
111.7
5
113.4
6
112.8
1
2
Engine
5
Frequency analysis
@ Point 1 1396 kWb gross
Hz
4
3
Noise levels
The figures for noise levels are typical for an engine running at standby power
rating in a semi-reverberant environment and measured at a distance of one
metre from the periphery of the engine.
Total noise level
Sound pressure level re: -20x10 Pa
Ambient noise level 84 d(B)A
Octave analysis performed at the position of maximum noise.
d(B)A
31.5
88.0
63
92.6
125
95.8
250
109.6
500
109.4
1k
102.8
2k
100.0
4k
95.1
8k
90.2
16k
84.0
Typical load acceptance (cold)
2nd load application immediately after engine has
recovered to rated speed
(5 seconds after initial load application)
Engine type
Prime
power %
Load kWe
nett
Transient
frequency
deviation
%
Frequency
recovery
time
seconds
Prime
power %
Load kWe
nett
Transient
frequency
deviation
%
Frequency
recovery
time
seconds
4012-46TWG4A
70
840
≤ 10
5
30
360
≤ 10
5
The above figures were obtained under test conditions as follows:
Engine block temperature .. ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... . 45 °C
Ambient temperature . ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... . 15 °C
Governing mode ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... .. Isochronous
Alternator inertia. ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... . 50 kgm²
Under frequency roll off (UFRO) point set to ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... 1 Hz below rated
UFRO rate set to ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... 2% voltage / 1% frequency
LAM on / off ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... .. on
All tests were conducted using an engine installed and serviced to Perkins Engines Company Limited recommendations.
Applied load is a percentage of generator electrical output efficiency as published in the general installation section of this data sheet.
The information given on this Technical Data sheet is for standard engines, and for guidance only.
For ratings other than those shown contact Perkins Engines Company Limited, Stafford.
Distributed by
Perkins Engines Company Limited
Peterborough PE1 5NA United Kingdom
Telephone +44 (0) 1733 583000
Fax +44 (0) 1733 582240
www.perkins.com
All information in the document is substantially correct at the time
of printing but may be subsequently altered by the company.
Publication No. TPD1703E, Issue 8. January 2012 © Perkins Engines Company Limited.
Initial load acceptance
when engine reaches rated speed
(15 seconds maximum after engine starts to crank)