UMMINS ENGINE COMPANY, INC

                              Columbus, Indiana 47201

                         ENGINE  PERFORMANCE CURVE

 

Basic Engine Model: KTA50-G3      Curve Number:FR-6250        Page No.

Engine Critical Parts List: CPL: 2227   Date:12Jan01

Displacement : 50.3 litre (3067 in³ )  Bore : 159 mm (6.25 in.)       Stroke : 159 mm (6.25 in.)

No. of Cylinders : 16       Aspiration : Turbocharged and Aftercooled

   Engine Speed    Standby Power Rating  Prime Power Rating  Continuous Power Rating

RPM        kWmBHP   kWm     BHP    kWmBHP  kWmBHP1500     1227 1645   1150      1541    1097 1470   900 1206

1800     1380 1850   1300      1742    1220 1635   1000 1340

Engine Performance Data @ 1500 RPM

%  kWm  BHP kg/kWm·h  lb/BHP·h  litre/hour  U.S. Gal/hour

100 1227  1645  0.203   0.334 293      77.4

100 1150  1541  0.202   0.333 274      72.3

100 1097  1470  0.202   0.333 261      69.0

 75  822  1102  0.206   0.338 199      52.5

 50  548   735  0.216   0.355 139      36.6

 25  275   368  0.234   0.385  76      20.0

100   900 1206 0.204   0.336  216   57.1

 

 

 

 

 

 

 

 

Applicable for supplying emergency power for the duration of the utility power outage. No overload capability is available for this rating. Under no condition is an engine allowed to operate in parallel with the public utility at the Standby Power rating. This rating should be applied where reliable utility power is available. A Standby rated engine should be sized for a maximum of an 80% average load factor and 200 hours of operation per year. This includes less than 25 hours per year at the Standby Power rating. Standby ratings should never be applied except in true emergency power outages. Negotiated power outages contracted with a utility company are not considered an emergency.

 

Prime Power is available for an unlimited number of hours per year in a variable load application. Variable load should not exceed a 70% average of the Prime Power rating during any operating period of 250 hours. The total operating time at 100% Prime Power shall not exceed 500 hours per year. A 10% overload capability is available for a period of 1 hour within a 12-hour period of operation. Total operating time at the 10% overload power shall not exceed 25 hours per year.

 

Limited Time Prime Power is available for a limited number of hours in a non-variable load application. It is intended for use in situations where power outages are contracted, such as in utility power curtailment. Engines may be operated in parallel to the public utility up to 750 hours per year at power levels never to exceed the Prime Power rating. The customer should be aware, however, that the life of any engine will be reduced by this constant high load operation. Any operation exceeding 750 hours per year at the Limited Time Prime Power rating should use the Continuous Power rating.

 

 

Data shown above represent gross engine performance capabilities obtained and corrected in accordance with ISO-3046 conditions of 100 kPa (29.5 in Hg) barometric pressure [110 m (361 ft) altitude], 25 °C (77 °F) air inlet temperature, and relative humidity of 30% with No. 2 diesel or a fuel corresponding to ASTM D2.

See reverse side for application rating guidelines.

The fuel consumption data is based on No. 2 diesel fuel weight at 0.85 kg/litre (7.1 lbs/U.S. gal).

Power output curves are based on the engine operating with fuel system, water pump and lubricating oil pump; not included are battery charging alternator, fan, optional equipment and driven components.

                                                        

 

 

 

RPM        kWmBHP   kWm     BHP   kWm BHP  kWmBHP 1500     1227 1645   1150   1541 1097  1470   900 1206

1800     1380 1850   1300   1742 1220  1635   1000 1340

 

Engine Performance Data @ 1800 RPM

%  kWm  BHP kg/kWm·h  lb/BHP·h  litre/hour  U.S. Gal/hour

100 1380  1850  0.204   0.335 330       87.3

100 1300  1742  0.203   0.334 310       81.0

100 1220  1635  0.203   0.334 291     76.9

 75  915  1226  0.207   0.340 222       58.7

 50  610   818  0.220   0.361 157       41.6

 25  305   409  0.249   0.410  89       23.6

100 1000  1340  0.206   0.338 242       63.8

 

 

Applicable for supplying emergency power for the duration of the utility power outage. No overload capability is available for this rating. Under no condition is an engine allowed to operate in parallel with the public utility at the Standby Power rating. This rating should be applied where reliable utility power is available. A Standby rated engine should be sized for a maximum of an 80% average load factor and 200 hours of operation per year. This includes less than 25 hours per year at the Standby Power rating. Standby ratings should never be applied except in true emergency power outages. Negotiated power outages contracted with a utility company are not considered an emergency.

Applicable for supplying electric power in lieu of commercially purchased power. Prime Power applications must be in the form of one of the following two categories:

 

Prime Power is available for an unlimited number of hours per year in a variable load application. Variable load should not exceed a 70% average of the Prime Power rating during any operating period of 250 hours. The total operating time at 100% Prime Power shall not exceed 500 hours per year. A 10% overload capability is available for a period of 1 hour within a 12-hour period of operation. Total operating time at the 10% overload power shall not exceed 25 hours per year.

Limited Time Prime Power is available for a limited number of hours in a non-variable load application. It is intended for use in situations where power outages are contracted, such as in utility power curtailment. Engines may be operated in parallel to the public utility up to 750 hours per year at power levels never to exceed the Prime Power rating. The customer should be aware, however, that the life of any engine will be reduced by this constant high load operation. Any operation exceeding 750 hours per year at the Limited Time Prime Power rating should use the Continuous Power rating.

 

Applicable for supplying utility power at a constant 100% load for an unlimited number of hours per year. No overload capability is available for this rating.

 

Data shown above represent gross engine performance capabilities obtained and corrected in accordance with ISO-3046 conditions of 100 kPa (29.5 in Hg) barometric pressure [110 m (361 ft.) altitude], 25 °C (77 °F) air inlet temperature, and relative humidity of 30% with No. 2 diesel or a fuel corresponding to ASTM D2.

See reverse side for application rating guidelines.

The fuel consumption data is based on No. 2 diesel fuel weight at 0.85 kg/litre (7.1 lbs/U.S. gal).

Power output curves are based on the engine operating with fuel system, water pump and lubricating oil pump; not included are battery charging alternator, fan, optional equipment and driven components.

 

 

 

 

            KTA50-G3 Derate Curves @ 1500 RPM       CURVE NO : FR-6250

          

               

 

 

                                                        DATE : 12Jan01

 

 

 

    NOTE: Derates shown are based on 15 in H20 air intake restriction and 2 in Hg exhaust back pressure.

    For sustained operation above these conditions, derate by an additional 5% per 1000 ft (300 m) and 9% per 18° F (10°

 

           Reference Standards:

                BS-5514 and DIN-6271 standards are based on ISO-3046.

 

 

                           Cummins Engine Company, Inc.

                                                                         DATA SHEET : DS-6250

ENGINE MODEL :  KTA50-G3    CONFIGURATION NUMBER : D283021DX02      DATE : 12Jan01               

                                                            ERFORMANCE CURVE : FR-6250

INSTALLATION DIAGRAM                CPL NUMBER

• Fan to Flywheel ：3626420                 • Engine Critical Parts List :   2227

Type .........................................................................................................................................................   4-Cycle; 60° Vee; 16-Cylinder Diesel

Aspiration .................................................................................................................................................   Turbocharged and Aftercooled

Bore x Stroke.........................................................................................................—  in x in (mm x mm)   6.25 x 6.25 (159 x 159)

Displacement. ......................................................................................................................—  in³ (liter)   3067 (50.3)

Compression Ratio....................................................................................................................................   13.9 : 1

Dry Weight

    Fan to Flywheel Engine.........................................................................................................—lb (kg)          11820          (5360)

    Heat Exchanger Cooled Engine............................................................................................—lb (kg)          12260          (5560)

Wet Weight

Fan to Flywheel Engine.........................................................................................................—lb (kg)          12485          (5662)

Heat Exchanger Cooled Engine ......................................................................................... .—lb (kg)        13085          (5934)

Moment of Inertia of Rotating Components

• with FW 6009 Flywheel ...........................................................................................—lbm• ft²(kg • m²)            301        (12.7)

• with FW 6017 Flywheel. ........................................................................................—lbm • ft² (kg • m²)          515           (21.7)

Center of Gravity from Rear Face of Flywheel Housing (FH 6024)..............................................—in (mm)          47.5           (1206)

Center of Gravity Above Crankshaft Centerline ...........................................................................—in (mm)           11.0         (279)

Maximum Static Loading at Rear Main Bearing..............................................................................—lb (kg)         2000            (908)

      Maximum Bending Moment at Rear Face of Block .................................................—lb • ft (N • m)         4500         (6100)

      Maximum Back Pressure @ Standby Power Rating.................................................—in Hg (mm Hg)             2             (51)

Maximum Intake Air Restriction

• with Dirty Filter Element @ Standby Power Rating .....................................................—in H₂O (mm H₂O)            25           (635)

• with Clean Filter Element @ Standby Power Rating ...................................................—in H₂O (mm H₂O)            15           (381)

COOLING SYSTEM 

Coolant Capacity  —  Engine Only .......................................................................................—US gal (liter)          42.5           (161)

Maximum Coolant Friction Head External to Engine —1800 rpm...............................................—psi (kPa)             15           (103)

                                          —1500 rpm...............................................—psi (kPa)             10            (69)

Maximum Static Head of Coolant Above Engine Crank Centerline...................................................— ft (m)              60          (18.3)

Standard Thermostat (Modulating) Range....................................................................................... —°F (°C)       180 - 200     (82 - 93)

Minimum Pressure Cap (For Cooling Systems with less than 2 m [6 ft.] Static Head)....................—psi (kPa)            14         (96)

Maximum Top Tank Temperature for Standby / Prime Power ...........................................................—°F (°C)       220 / 21       (104 / 100)

Oil Pressure  @ Idle Speed ...........................................................................................................—psi (kPa)            20           (138)

             @ Governed Speed .................................................................................................—psi (kPa)           50 - 70      (345 - 483)

Maximum Oil Temperature.................................................................................................................—°F (°C)           250           (121)

Oil Capacity with OP 6024 Oil Pan : High - Low .......................................................................—US gal (liter)       40 - 32       (151 - 121)

Total System Capacity (Including Bypass Filter).......................................................................—US gal (liter)         46.7             (177)

Angularity of OP 6024 Oil Pan —Front Down .........................................................................................         30°

                          —Front Up ..............................................................................................         30°

                          —Side to Side.........................................................................................          30°

Type Injection ............................................................................................................................................................Direct Injection Cummins PT

 

Maximum Restriction at PT Fuel Injection Pump —with Clean Fuel Filter................................................—in Hg (mm Hg)   4.0      (102)

                                           —with Dirty Fuel Filter...................................................—in Hg (mm Hg)   8.0      (203)

Maximum Allowable Head on Injector Return Line (Consisting of Friction Head and Static Head)..........—in Hg (mm Hg)   6.5     (165)

Maximum Fuel Flow to Injection Pump................................................................................................— US gph (liter / hr)  165      (625)

Cranking Motor (Heavy Duty, Positive Engagement) ..............................................................................................—  volt      24

Battery Charging System, Negative Ground ..................................................................................................... — ampere         35

Maximum Allowable Resistance of Cranking Circuit.................................................................................................— ohm      0.002

Minimum Recommended Battery Capacity

• Cold Soak @ 50°F (10 °C) and Above ........................................................................................................—0°F CCA       1280

• Cold Soak @ 32°F to 50 °F (0 °C to 10 °C)................................................................................................—0°F CCA       1800

• Cold Soak @ 0 °F to 32 °F (-18 °C to 0 °C)................................................................................................—0°F CCA     1800

Minimum Ambient Temperature for Aided (with Coolant Heater) Cold Start within 10 seconds................................—°F (°C)      50      (10)

Minimum Ambient Temperature for Unaided Cold Start............................................................................................—°F (°C)      45   (7)

All data is based on: • Engine operating with fuel system, water pump, lubricating oil pump, air cleaner and exhaust

                       silencer; not included are battery charging alternator, fan, and optional driven components.

                     • Engine operating with fuel corresponding to grade No. 2-D per ASTM D975.

                     • ISO 3046, Part 1, Standard Reference Conditions of:

                     Barometric Pressure :  100 kPa (29.53 in Hg) Air Temperature : 25 °C (77 °F)

                     Altitude :  110 m (361 ft) Relative Humidity : 30%

 

Steady State Stability Band at any Constant Load ............................................................................................................—%      +/- 0.25

Estimated Free Field Sound Pressure Level of a Typical Generator Set; .

Excludes Exhaust Noise; at Rated Load and 7.5 m (24.6 ft); 1800 rpm / 1500 rpm.......................................................—dBA     94.6 / 92.4

Exhaust Noise at 1 m Horizontally from Centerline of Exhaust Pipe Outlet Upwards at 45°   —  1800 / 1500 rpm....—dBA     126 / 125

 

                                                                     STANDBYPOWER   PRIME POWERUNLIMITED TIME

Governed Engine peed....................................................................—rpm        1800         1500       1800        1500

Engine Idle Speed ......................................................................... —rpm      725 - 775      725 - 775      725 - 775    725 - 775

Gross Engine Power Output. .................................................BHP (kWm)   1850 (1380)   1645  (1227)   1635  (1220)   1470  (1097)

Brake Mean Effective Pressure ...........................................—  psi (kPa)    265 (1827)    283  (1951)    235  (1620)    253  (1744)

Piston Speed................................................................—  ft / min (m / s)    1875  (9.5)      1562  (7.9)    1875  (9.5)   1562  (7.9)

Friction Horsepower ............................................................... HP (kWm)     225  (168)      155  (116)     225  (168)    155  (116)

Engine Water Flow at Stated Friction Head External to Engine:         

• 4 psi Friction Head..............................................—  US gpm (liter / s)     535 (33.7)    440 (27.8)     535  (33.7)    440  (27.8)

• Maximum Friction Head......................................—  US gpm (liter / s)     470 (29.6)      400 (25.2)     470  (29.6)    400  (25.2)

 

Intake Air Flow ..............................................................—  cfm (liter / s)    3900 (1840)    3700 (1746)   3700  (1746)   3400  (1605)

Exhaust Gas Temperature................................................   —  °F (°C)     887 (475)       977  (525)    860  (460)     968  (520)

Exhaust Gas Flow ........................................................—  cfm (liter / s)    9100 (4295)    8500 (4011)   8400  (3964)   7900  (3728)

Air to Fuel Ratio ..................................................................—  air : fuel       26.5 : 1       27.0 : 1       27.5 : 1       28.0 : 1

Radiated Heat to Ambient ....................................—  BTU / min (kWm)   10000  (176)     8500 (150)    8500  (150)    7300  (130)

Heat Rejection to Coolant ...................................—  BTU / min (kWm)    51000 (900)     44000 (775)   44000  (775)   38500  (680)

Heat Rejection to Exhaust...................................—  BTU / min (kWm)    53000 (935)     48000 (845)    47000  (830)   43000  (760)

 

N.A.  - Data is Not Available

N/A- Not Applicable to this Engine

TBD  - To Be Determined

                                                                                   ENGINE MODEL : KTA50-G3

                                                                                      DATA SHEET :DS-6250

CUMMINS ENGINE COMPANY, INC.             Columbus, Indiana 47202-3005            DATE :12Jan01

                                                                                            CURVE NO. : FR-6250

          KTA50-G3 Derate Curves @ 1800 RPM                 CURVE NO : FR-6250

 

DATE : 12Jan01

 

 

 

 

 

               NOTE：Derates shown are based on 15 in H20 air intake restriction and 2 in Hg exhaust back pressure.

               For sustained operation above these conditions, derate by an additional 6% per 1000 ft (300 m) and 8% per 18° F (10° C).

 

 

 

Reference Standards:

  BS-5514 and DIN-6271 standards are based on ISO-3046.