Engine and radiator coolant capacity: 378 quarts (358 litres)
Lube oil capacity: 154 quarts (146 litres)
Starting: 24-volt negative ground
Cylinder block: cast iron with replaceable wet liners
Fuel system: number 2 diesel fuel, fuel filters, fuel transfer pump with 6 ft (2 m) fuel lift, automatic electric fuel shutoff, direct injection system
Air cleaner: dry element type
Valves: four per cylinder, single springs
Crankshaft: forged steel integral counterweight type
Connecting rods: forged steel I-beam design
Governor: electronic EFC externally adjustable from isochronous to 5% droop
Engine oil filtration: full flow
Standard Equipment
Cummins direct injection 4-cycle diesel engine
Brushless AC alternator with PMG excitation system
Structural steel skid base
Mounted control panel on isolators
Battery cables
Flexible fuel lines
Dry element air cleaner with restriction indicator
Oil drain valve
Full flow oil filter
Radiator with air discharge duct adapter flange and protective grille
24 volt electrical system
Battery charging alternator
Mounted battery rack within skid
50°C (122°F) radiator
Genset Performance
Voltage regulation under load from no load to 100% will be within ± 0.5%
Random voltage variation for constant loads from no load to 100% will not exceed ± 0.5% of its mean value
Frequency regulation under varying loads from no load to 100% load is isochronous
Random frequency variation will not exceed ± 0.25% of its mean value for constant loads from no load to full load
Electromagnetic interference attenuation meets requirements of most industrial and commercial applications
Total harmonic distortion of the AC waveform is less than 5% total no load to full load and less than 3% for any single harmonic
One step load acceptance: 100% of nameplate kW rating, meets requirement of NFPA 110, paragraph 5-13.2.6
Alternator temperature rise at rated load is less than 105°C at prime power rating and less than 125°C at standby rating; temperature rise is per NEMA MG1.22.40, IEEE115 and BS4999, part 101
Waveform deviation factor less than 5% line-to-line reduces risk of overheating and of interference with sensitive communication equipment
Standby rating: the unit will operate at the stated rating for the duration of normal utility power interruptions
Prime power rating: the unit is applicable for supplying electric power in lieu of commercially purchased power; intermittent overloads up to the standby rating are allowable
Ratings and performance exceed conditions set forth in ISO 3046; refer to generator set data sheets for specific rating information
Main Alternator Detail
Design: revolving field, brushless, single bearing, 4 pole, dripproof construction; superior mechanical and thermal design achieved through use of the best available materials
Stator: skewed stators and two-thirds pitch windings result in minimum field heating and voltage harmonics; laminations of low loss, insulated, electrical grade steel to maximize efficiency; double dipped in thermosetting, moisture, oil and acid resisting varnish
Radio interference: alternator and voltage regulator meet the provisions of BS.800 and VDE class G and N
Bearing: the rotor is supported by a prelubricated, maintenance free ball bearing
Cooling: direct drive centrifugal blower
Rotor: direct coupled to engine with flexible drive discs; complete amortisseur (damper) windings ensure minimum voltage deviations and heating effects under unbalanced loads; dynamically balanced rotor assembly; impregnated with 100% thermosetting resins
Excitation: the brushless exciter armature feeds the main alternator field winding through a shaft mounted three-phase full-wave silicon diode rectifiers; the semi-conductor surge suppressor protects the diodes against transient overvoltages induced by load surges; the automatic voltage regulator provides variable excitation to assist the engine during transient load conditions
PMG: permanent magnet generator provides constant power for the voltage regulator and provides immunity to SCR tracking
Insulation: the insulation system is class H per NEMA MG1-1.65 and BS2757 definition
Operating Data (At Standby Rating)
60 hertz (1800 rpm): engine power 1620 bhp (1209 kW), piston speed 1875 fpm (1399 m/s), radiator cooling air 66570 cfm (1885.3 m³/min), maximum heat rejection (engine to coolant) 44800 btu/min (47.3 mj/min), coolant flow 549 gpm (2078 l/min), combustion requirement air 3900 cfm (110.4 m³/min), alternator airflow 4360 cfm (123.5 m³/min), heat radiated to room (engine and generator) 13601 btu/min (14.3 mj/min)
Average fuel consumption number 2 diesel at load: 1/4 load 27 gph (102 l/h), 1/2 load 45 gph (170 l/h), 3/4 load 64 gph (242 l/h), full load 82 gph (310 l/h)
60 hz, 1800 rpm 3-phase specific voltage: 347/600V, 1323A
Control Detail
Vibration-isolated control with DC panel lighting
Auto start control panel standard features: run-stop-remote switch, remote starting 24-volt 2-wire, oil pressure gauge, coolant temperature gauge, DC voltmeter, running time meter, fault reset switch, lamp test switch, cycle cranking, 7-light engine monitor with individual 1/2 amp relay signals and common alarm contact indicating each of the following: low oil pressure, high coolant temperature, overspeed, crank fail, low coolant level, battery charger fail, emergency stop
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