341260 Hz

Prime Power – 455 kWStandby Power – 500 kW

Generator Set

SPECIFICATIONS

Watercooled Diesel, four stroke, V-12Bore—mm (in) . . . . . . . . . . . . . . . . . . . . . . . . . 137 (5.4)Stroke—mm (in) . . . . . . . . . . . . . . . . . . . . . . . . 152 (6.0)Displacement—L (cu in) . . . . . . . . . . . . . . 27.0 (1,649)Aspiration . . . . . . . . . . . . . . . . . . . . . . . . . Turbocharged Compression ratio . . . . . . . . . . . . . . . . . . . . . . . . . 14.5:1

Shown withOptional Equipment

CATERPILLAR SR4 GENERATOR

Frame size . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 588Type . . . . . . . . . . . . . Static regulated brushless excitedConstruction . . . . . . . . . . Single bearing, close coupledThree phase . . . . . . . . . . . . . . . . . . . . . . . wye connectedInsulation . . . . . . . . . . . . . . . Class F with tropicalizationTerminal box . . . . . . . . . . . . . . . . . . . . . . Drip proof IP 22Overspeed capability. . . . . . . . . . . . . . . . . . . . . . . . 150%Paralleling capability . . . . . . . Standard with adjustable

voltage droopVoltage regulator . . . . . . . . . . . . . 3 phase sensing with

Volts-per-HertzAdjustable – 25% + 10%

Voltage regulation . . . Less than + 1/2% (steady state)Less than + 1% (no load to full load)

Voltage gain . . . . Adjustable to compensate for engine speed drop and line loss

Wave form . . . . . . . . . . . . . . . . . Less than 5% deviationTIF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Less than 50THD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Less than 5%

CATERPILLAR CONTROL PANEL

24 Volt DC ControlTerminal box mountedVibration isolatedNEMA 1, IP 22 enclosureElectrically dead frontLockable doorGenerator instruments meet ANSI C-39-1

Voltages Available(Consult Price List)

FEATURES

■ CAT® DIESEL GENERATOR SETSFactory designed, certified prototype tested with torsional analysis. Production tested and delivered to you in a package that is ready to be connected to your fuel and power lines. EPG Designer computer size available. Supported 100% by your Caterpillar dealer with warranty onparts and labor; extended warranty available in some areas. The generator set was designed and manufactured in an ISO 9001 compliant facility. Generator set and components meet or exceed the following: AS1359, AS2789, ABGSMTM3, BS4999, DIN6271, DIN6280, EGSA101P, JEM1359, IEC 34/1, ISO 3046/1, ISO DIS 8528, NEMA MG1-22.

■ RELIABLE, FUEL EFFICIENT DIESELThe compact, four-stroke-cycle diesel engine combines durability with minimum weight while providing dependability and economy. The fuel system operates on a variety of fuels.

■ CATERPILLAR SR4 GENERATORSingle bearing, wye connected, static regulated brushless excited generator designed to match the performance and output characteristics of theCaterpillar diesel engine that drives it.

■ EXCLUSIVE CATERPILLARVOLTAGE REGULATORThree phase sensing and Volts per Hertz regulation with constant voltage in the normal operating range gives precise control and excellent block loading.

3412 GENERATOR SET

STANDARD EQUIPMENT

EngineAir cleaner with service indicatorBase, structural steelBreather, crankcaseCooler, lubricating oilExhaust fitting and flangeFilters, right handFuel, full flowGovernorLifting eyesLubricating oil, gear drivenManifold, exhaust, dryPumps,

fuel transfer, gear drivenlubricating oil, gear drivenjacket water, gear driven

RadiatorShutoff, manualStarting, electric, 24 Volt DC

GeneratorSR4 brushless with VR3Automatic voltage regulator

Control PanelAuto start-stop control moduleDigital ammeter, voltmeter,

phase selector switch,frequency meterw/cycle crank and cooldown

Digital DC voltmeter, tachometer,hourmeter

Digital oil pressure and waterEmergency stop push buttonEngine control switch for auto,

start/run, off/reset, stopLamp display

temperature gaugesShutoffs with indicators for:

low oil pressurehigh water temperatureoverspeedovercrankemergency stop push button

System diagnostic codesdigital readout

Voltage adjust rheostat

OPTIONAL EQUIPMENT

Engine/BaseAir cleaner, heavy dutyAir precleanerBattery chargersBattery/racksCharging alternatorCooling system

high ambient radiatorsfan drivesheat exchangers

Exhaust systemfittings, elbows, pipeflex, mufflers

Governor, WoodwardJacket water heatersMounting system

narrow basefuel tank baselifting arch

Primary fuel filterProtection devicesTachometer driveVibration isolators

GeneratorManual voltage controlMIL Std. 461B, Part 9Permanent magnet exitationRFI N Level (VDE 875), BS800Space heater

SwitchgearCircuit breaker

manualelectric operated

Enclosure — Floor standing NEMA 1Main load bussParalleling

manualpermissiveauto (consult factory)

Protective relays

Control PanelAuxiliary relayEnclosure, NEMA 12/IP 44Governor speed switchIlluminating lightsInstalled speed sensing

governor (Woodward)Provision for:

alarm modulealarm module – NFPA 99alarm module – NFPA 110

Reverse power relayStarting aid switchSynchronizing lights

3412 GENERATOR SET

TECHNICAL DATA

Metric EnglishRating Rating type Prime Standby Prime StandbyInformation Power rating @ 0.8 PF with fan kW 455 500 kW 455 500

Power rating @ 0.8 PF with fan kV•A 569 625 kV•A 569 625

Dimensions Generator frame size 588 588 588 588Length mm 3824 3824 in 150.6 150.6Width mm 1779 1779 in 70.1 70.1Height mm 2004 2004 in 78.9 78.9Weight (dry) kg 4389 4398 lb 9700 9700

Lubrication Engine lubricating oil capacity L 72 72 qts 76 76& Cooling Engine coolant capacity w/o radiator L 56.7 56.7 gal 14.9 14.9Systems Engine coolant capacity with radiator L 113.3 113.3 gal 29.9 29.9

Standard radiator arrangement data:Air flow (max. @ rated speed) m3/min 673 673 cfm 23,767 23,767Air flow restriction (after radiator) kPa .06 .06 in water 0.25 0.25Ambient air temperature (consult T.I.F.) deg C 42 42 deg F 107 108

Coolant pump external resistance (max. allowable) m water 5.1 5.1 ft water 23.2 23.2Coolant pump flow @ max. allowable resistance L/min 530.6 530.6 gpm 140 140

Exhaust System backpressure (max. allowable) kPa 6.7 6.7 in water 27 27System Exhaust flange size (internal dia.) mm 203 203 in 8 8

Performance Fuel consumption (100% load) with fan L/hr 133.6 148.8 gph 35.3 39.3Data @ Rated Fuel consumption (75% load) with fan L/hr 101.4 112.1 gph 26.8 29.6Conditions Combustion air inlet flow rate m3/min 38 41 cfm 1356 1444

Exhaust gas flow rate m3/min 112 122 cfm 3938 4301Heat rejection to coolant (total) kW 315 344 Btu/min 17,926 19,587Heat rejection to exhaust (total) kW 482 542 Btu/min 27,411 30,823Heat rejection to atmosphere from engine kW 117 139 Btu/min 6654 7905Heat rejection to atmosphere from generator kW 32 36 Btu/min 1828 2066Exhaust gas stack temperature deg C 581 604 deg F 1078 1119

02

03

201

202

308

401

402

520

703

Centerlineof engine

Rear face ofcylinder block

Fuel Inlet

Excess Fuel Return

Oil Filter

Air Inlet

Exhaust

Control andPower Panel

CustomerMounting Holes

3412 GENERATOR SET

LEHX3096 (9-93) © 1993 Caterpillar Printed in U.S.A.Supersedes LEHX8150

CONDITIONS AND DEFINITIONS

Prime — Output available with varying load for anunlimited time. Prime power in accordance withIS08528, Overload power in accordance withIS03046/1, AS2789, DIN6271, and BS5514.Standby — Output available with varying load for theduration of the interruption of the normal source power.Fuel stop power in accordance with IS03046/1,AS2789, DIN6271, and BS5514. Continuous — Output available without varying loadfor an unlimited time. Continuous power in accordancewith IS08528, IS03046/1, AS2789, DIN6271, andBS5514.

Ratings are based on SAE J1349 standard conditions. These ratings also apply at IS03046/1,DIN6271 and BS5514 standard conditions. Fuelrates are based on IS03046 and on fuel oil of 35 deg. API (16 deg. C or 60 deg. F) gravity having a LHV of 42 780 kJ/kg (18,390 Btu/lb) when used at 29 deg. C (85 deg. F) and weighing 838.9 g/L(7.001 lbs/U.S. gal.).