1500 kW Containerized Diesel Generator Set
Alternator Specifications
Model 742RSL4050 | Marathon Magna Max |
Type | Rotating Field |
Number of Leads | 4 bar |
Generator Type | Rotating Field; PMG |
Voltage Regulator | Solid State, Digital, Model DVR2000 |
Insulation | NEMA |
Material | Class H |
Temperature Rise | 105o / 130o C |
Bearing: Number, Type | Single Sealed |
Coupling | Flexible Disk |
Amortisseur Windings | Full |
Voltage Regulation | 0.25% |
One Step Load Acceptance % of rating per | 100 |
Peak Motor Starting HP | 750 |
Generator Efficiency at Full Load | 95% |
Phase Sequence | ABC (L1, L2, L3) |
| 5.0% |
| 3.0% |
Voltage Dip Upon Full Load Application (1 Step) | 12.5% for 0.4 sec. |
Voltage Rise Upon Full Load Rejection (1 Step) | 17% for 0.7 sec. |
The EGC1500C Sound Attenuated Generator is configured for standard 60 Hz, 480V output. Special voltage outputs are available (special order).
Alternator Features
All ratings tested per
Protection for overload and short circuit
Designed and built within NEMA, IEEE and ANSI standards for temperature rise
PMG exciter for superior regulation and response
Skewed rotor for smooth voltage wave form
Listed to UL1446 and UL1004B Standards
Engine Specifications
EPA Family Name 8CEXL050.AAD | Cummins | |
Engine Type | ||
Watercooled, Aftercooler | ||
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Cylinder Arrangement | V 16 | |
Displacement | 3067 cu in (50.3 L) | |
Bore | 6.25 in. (159 mm) | |
Stroke | 6.25 in. (159 mm) | |
Compression Ratio | 14.9 : 1 | |
Piston Speed (60Hz) | 1875/sec | |
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Bearing Main: Number | 9 | |
Bearing Main: Type | Replaceable, Precision | |
Cylinder Block | Cast iron with | |
wet, replaceable cylinder liners | ||
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Cylinder Head Material | Cast iron | |
Crankshaft Material | Forged steel | |
Brake Mean Effective Pressure (BMEP) | 318.0 psi (2192.5 kPa) | |
Rated RPM (60Hz) | 1800 RPM | |
Max. Power At Rated RPM (with fan) | 2250 hp (1703 kW) | |
Governor: Type; Make/Model | Electronic | |
Frequency Regulation: | Isochronous under varying loads | |
No load to full load | from no load to 100% rated load | |
Frequency Regulation: | +0.25% of mean value for constant | |
Steady State | loads from no load to full load | |
Air Cleaner Type - All Models | Dry, Dual Element |
Amperage
Voltage | Phase | Power |
| Amperes | |
Factor | Standby |
| Prime | ||
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277/480 Volt | 3 | 0.8 | 2255 |
| 1879 |
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Engine Electrical System
Battery Charging Alternator Ground Type | Negative | |
Volts | 24 VDC | |
Ampere Rating | 45A | |
Starter Motor Rated Voltage | 24 VDC | |
Minimum Recommended Battery for | 1800 CCA | |
0 °C / Cold Cranking Performance | ||
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Exhaust System |
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Exhaust Temperature at Rated kW (Standby) | 965oF (520oC) |
Exhaust Flow at Rated kW (Standby) | 10690 cfm (302 m3/min) |
Silencer Type | Critical |
Maximum Allowable Backpressure | 2 in/Hg (51 mm/Hg) |
Exhaust Outlet Size at | 8 in. (203 mm) |
EGC1500C Rev 6
