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Diesel Generator Set Model DFCB 60 Hz 300 kW, 375 kVA Standby 270 kW, 338 kVA Prime
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Description |
Features |
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The Cummins Power Generation DF-series commercial generator set is a fully integrated power generation system providing optimum performance, reliability, and versatility for stationary standby or prime power applications. A primary feature of the DF GenSet is strong motor-starting capability and fast recovery from transient load changes. The torque-matched system includes a heavy-duty Cummins 4-cycle diesel engine, an AC alternator with high motor-starting kVA capacity, and an electronic voltage regulator with threephase sensing for precise regulation under steady-state or transient loads. The DF GenSet accepts 100% of the nameplate standby rating in one step, in compliance with NFPA 110 requirements. The standard PowerCommand® digital electronic control is an integrated system that combines engine and alternator controls for high reliability and optimum GenSet performance. Optional weather-protective enclosures and coolant heaters shield the generator set from extreme operating conditions. Environmental concerns are addressed by low exhaust emission engines, sound-attenuated enclosures, exhaust silencers, and dual-wall fuel tanks. A wide range of options, accessories, and services are available, allowing configuration to your specific power generation needs. Every production unit is factory tested at rated load and power factor. This testing includes demonstration of rated power and single-step rated load pickup. Cummins Power Generation manufacturing facilities are registered to ISO9001 quality standards, emphasizing our commitment to high quality in the design, manufacture, and support of our products. The generator set is CSA certified and is available as UL2200 Listed. The PowerCommand control is UL508 Listed. All Cummins Power Generation systems are backed by a comprehensive warranty program and supported by a worldwide network of 170 distributors and service branches to assist with warranty, service, parts, and planned maintenance support.
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UL Listed Generator Set - The complete generator set assembly is available Listed to UL 2200.Cummins Heavy-Duty Engine - Rugged 4-cycle industrial diesel engine delivers reliable power, low emissions, and fast response to load changes.Alternator - Several alternator sizes offer selectable motor starting capability with low reactance 2/3 pitch windings, low waveform distortion with non-linear loads, fault-clearing short-circuit capability, and class H insulation. The alternator electrical insulation system is UL1446 Recognized.Permanent Magnet Generator (PMG) - Offers enhanced motor starting and fault-clearing short circuit capability.Control System - The PowerCommand electronic control is standard equipment and provides total genset system integration, including automatic remote starting/stopping, precise frequency and voltage regulation, alarm and status message display, AmpSentryTM protection, output metering, auto-shutdown at fault detection, and NFPA 110 compliance. PowerCommand control is Listed to UL508.Cooling System - Provides reliable running at the rated power level, at up to 50oC ambient temperature.Structural Steel Skid Base - Robust skid base supports the engine, alternator, and radiator.E-Coat Finish - Dual electro-deposition paint system provides high resistance to scratching, corrosion, and fading.Enclosures - Optional weather-protective and sound attenuated enclosures are available.Fuel Tanks - Dual wall sub-base fuel tanks are also offered.Certifications - Generator sets are designed, manufactured, tested, and certified to relevant UL, NFPA, ISO, IEC, and CSA standards.Warranty and Service - Backed by a comprehensive warranty and worldwide distributor network. |
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Generator Set The general specifications provide representative configuration details. Consult the outline drawing for installation design. Specifications – General See outline drawing 500-3014 for installation design specifications. |
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Unit Width, in (mm): Unit Height, in (mm): Unit Length, in (mm): Unit Dry Weight, lb (kg): Unit Wet Weight, lb (kg): Rated Speed, rpm: Voltage Regulation, No Load to Full Load: Random Voltage Variation: Frequency Regulation: Random Frequency Variation: Radio Frequency Interference:
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50.0 (1270) 63.6 (1615) 142.0 (3607) 7250 (3289) 7480 (3393) 1800 ±0.5% ±0.5% Isochronous ±0.25% IEC 801.2, Level 4 Electrostatic Discharge IEC 801.3, Level 3 Radiated Susceptibility IEC 801.4, Level 4 Electrical Fast Transients IEC 801.5, Level 5 Voltage Surge Immunity MIL STD 461C, Part 9 Radiated Emissions (EMI) |
| Cooling | Stand-By | Prime |
| Fan Load, HP (kW) | 17.0 (12.7) | 17.0 (12.7) |
| Coolant Capacity with radiator, US Gal (L) | 13.5 (51.1) | 13.5 (51.1) |
| Coolant Flow Rate, Gal/min (L/min) | 130.0 (492.0) | 130.0 (492.0) |
| Heat Rejection To Coolant, Btu/min (MJ/min) | 11625.0 (12.3) | 10500.0 (11.1) |
| Heat Radiated To Room, Btu/min (MJ/min) | 5320.0 (4.6) | 3850.0 (4.1) |
| Maximum Coolant Friction Head, psi (kPa) | 7.0 (48.3) | 7.0 (48.3) |
| Maximum Coolant Static Head, ft (m) | 60.0 (18.3) | 60.0 (18.3) |
| Air | ||
| Combustion Air, scfm (m3/min) | 980.0 (27.7) | 950.0 (26.9) |
| Alternator Cooling Air, scfm (m3/min) | 2780.0 (78.7) | 2780.0 (78.7) |
| Radiator Cooling Air, scfm (m3/min) | 15500.0 (438.6) | 15500.0 (438.6) |
| Max. Static Restriction, in H2O (PA) | 0.5 (124.5) | 0.2 (62.2) |
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Rating Definitions Standby Rating based on: Applicable for supplying emergency power for the duration of normal power interruption. No sustained overload capability is available for this rating. (Equivalent to Fuel Stop Power in accordance with ISO3046, AS2789 DIN6271 and BS5514). Nominally rated.Prime (Unlimited Running Time) Rating based on: Applicable for supplying power in lieu of commercially purchased power. Prime power is the maximum power available at a variable load for an unlimited number of hours. A 10% overload capability is available for limited time. (Equivalent to Prime Power in accordance with ISO8528 and Overload Power in accordance with ISO3046, AS2789, DIN6271, and BS5514). This rating is not applicable to all generator set models.Base Load (Continuous) Rating based on: Applicable for supplying power continuously to a constant load up to the full output rating for unlimited hours. No sustained overload capability is available for this rating. Consult authorized distributor for rating. (Equivalent to Continuous Power in accordance with ISO8528, ISO3046, AS2789, DIN6271, and BS5514). This rating is not applicable to all generator set models.Site Derating Factors Rated power available up to 5800 ft (1769 m) at ambient temperatures up to 104°F (40°C). Above 5800 ft (1769 m), derate at 4% per 1000 ft (305 m) and 1% per 10°F (2% per 11°C) above 104°F (40°C).
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Control System
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PowerCommand Control with AmpSentryTM Protection |
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• The PowerCommand Control is an integrated generator set control system providing governing, voltage regulation, engine protection, and operator interface functions.• PowerCommand Controls include integral AmpSentry protection. AmpSentry provides a full range of alternator protection functions that are matched to the alternator provided.• Controls provided include Battery monitoring and testing features, and Smart-Starting control system.• InPower PC-based service tool available for detailed diagnostics.• Standard PCCNet interface. Available with Echelon LonWorksTM network interface.• NEMA 3R enclosure.• Suitable for operation in ambient temperatures from -40C to +70C, and altitudes to 13,000 feet (5000 meters).• Prototype tested; UL, CSA, and CE compliant. |
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