When grid outages compromise production productivity, safety, and operational continuity, the 550kVA Cummins diesel generator set stands as an unyielding source of continuous electricity. Centered on the field-proven 18.9-liter Cummins KTA19-G3A powertrain, this heavy-duty power package combines low lifecycle maintenance costs, legendary mechanical resilience, and immediate transient load pickup. Designed for seamless operation in severe high-temperature, dusty, and high-humidity environments, our 550kVA Cummins diesel generator provides peace of mind for electrical contractors, mine operators, data infrastructure facilities, and factory managers around the globe.
Coupled with the high-performance Stamford S5L1D-D41 alternator, this 550kVA diesel generator ensures exceptionally clean sine-wave output with minimal total harmonic distortion, protecting variable speed drives, server arrays, and delicate robotic machinery. System management and utility mains synchronization are handled by the British-engineered Deep Sea DSE6120 automatic mains failure (AMF) control module, offering comprehensive engine protection, intelligent battery health supervision, and rapid transfer switch coordination. Every single 550kVA Cummins diesel generator set undergoes rigorous factory load-bank testing across 25%, 50%, 75%, 100%, and 110% overload conditions to ensure instant, trouble-free commissioning upon site delivery.
Key Engineering Advantages & Competitive Selling Points
1. Cummins KTA19-G3A Engine with Jacket Water Aftercooling
At the mechanical foundation of this 550kVA Cummins diesel generator lies the heavy-duty Cummins KTA19-G3A 4-stroke industrial diesel engine. Utilizing an in-line 6-cylinder layout with an optimized 159 mm × 159 mm square bore-to-stroke configuration, the engine achieves structural rigidity, uniform thermal distribution, and minimal internal friction. Unlike air-to-air cooling setups, the KTA19-G3A incorporates a specialized Jacket Water Aftercooler (JWAC) integrated directly into the internal engine coolant circuit. This compact, rugged architecture stabilizes intake manifold air temperatures rapidly, boosts volumetric combustion efficiency, and protects intake valves under sudden load surges. The proven Cummins PT (Pressure-Time) mechanical fuel injection system utilizes cam-driven unit injectors, delivering precise fuel atomization, lower specific fuel consumption, and bulletproof resistance against contaminated or varying-density fuel.
2. Original Stamford S5L1D-D41 Industrial Synchronous Alternator
Electrical power conversion in this 550kVA diesel generator set is delivered by the premium Stamford S5L1D-D41 alternator, engineered by Cummins Generator Technologies. This 4-pole brushless synchronous AC generator incorporates a specialized 2/3 pitch stator winding that effectively eliminates damaging 3rd, 9th, and 15th harmonic currents, preventing excessive overheating of neutral conductors and sensitive IT power supplies. Engineered with high-temperature Class H insulation, IP23 mechanical ingress protection, and the Stamford AS440 solid-state AVR, the alternator achieves ±1.0% steady-state voltage regulation from zero load to full 550kVA standby capacity. Customers can also choose optional PMG (Permanent Magnet Generator) excitation to sustain up to 300% short-circuit current for 10 seconds, effortlessly breaking through motor starting inrush currents for pumps, compressors, and ventilation fans.
3. UK Deep Sea Electronics DSE6120 Intelligent Auto Mains Failure Controller
Control automation is driven by the world-standard Deep Sea DSE6120 digital control module. Specifically developed for single-genset automatic mains failure (AMF) applications, the DSE6120 continuously scans both incoming 3-phase utility grid power and the 3-phase generator output. Upon mains failure, under-voltage, over-voltage, or phase interruption, the module automatically signals the 550kVA diesel generator to fire up, achieve stable voltage and frequency, and transfer load via the ATS in under 10 seconds. The intuitive backlit icon LCD display provides real-time readouts of engine speed, oil pressure, coolant temperature, running hours, battery voltage, AC voltage, current, and active power. Complete with integrated event logging (up to 50 events), PIN-protected front-panel programming, and PC USB parameter configuration, the DSE6120 eliminates operational complexity while safeguarding the genset from costly operator mistakes.
4. Heavy-Gauge Steel Skid Base with Anti-Vibration Isolation
The complete 550kVA Cummins generator assembly is anchored upon a robotically welded heavy-gauge structural steel chassis. Heavy-duty elastomeric rubber vibration dampers isolate the engine and alternator from the base frame, neutralizing over 95% of mechanical vibration transmission. This protects the mounting floor, prevents pipe fatigue, and ensures ultra-quiet, stable operation. The base frame can be equipped with an optional integrated daily fuel tank holding sufficient capacity for 8 to 12 hours of continuous running at full load, complete with mechanical fuel gauges, fuel supply/return lines, and a dedicated fuel containment basin.
5. Heavy-Duty 50°C Ambient Tropical Radiator Package
Standard generator configurations often include 40°C cooling packages that derate sharply in warmer climates. Our 550kVA Cummins diesel generator set features a true 50°C tropical cooling radiator engineered with reinforced copper/brass cooling cores, heavy-duty pusher fan blades, and integrated protective finger guards. Whether deployed in harsh Middle Eastern deserts, tropical equatorial regions, or confined indoor basement generator rooms, the cooling system maintains engine jacket water within optimal thermal thresholds without power derating.
Product Parameter Summary
Parameter |
Value |
Model |
CDC550S |
Prime Power |
500KVA/400KW |
Standby Power |
550KVA/440KW |
Frequency/Speed |
50Hz/1500rpm, 60Hz/1800rpm |
Phase Wires |
3 phase 4 wire |
Power Factor |
0.8 (Lagging) |
Engine Model |
Cummins KTA19-G3A |
Cylinders |
6 |
Bore x Stroke(mm) |
159 x 159mm |
Compression Ratio |
13.9 : 1 |
Cooling Method |
Water – cooled |
Starting Method |
24V DC electrical start |
Alternator |
Stamford / Leroy-Somer / Tooplinks |
Control System |
DeepSea / Smartgen |
Voltage |
110V-440V |
Insulation Class |
Class H |
Protection Rating |
IP23 (standard), optional IP55 |
Dimensions (L×W×H) |
4700 x 1800 x 2500mm |
Weight (KGS) |
5500kg |
Optional |
ATS (auto transfer system) |
Noise (Db) |
≤ 72db@7m |
MOQ |
1 pcs |
Q1: What is the primary difference between Cummins KTA19-G3A and KTAA19-G6A engines?
A: The KTA19-G3A utilizes Jacket Water Aftercooling (JWAC), routing engine coolant to cool intake air, which provides a compact, robust setup rated at 550kVA standby. The KTAA19-G6A employs Air-to-Air Charge Cooling (ATAAC) with an external intercooler core in front of the radiator, achieving higher output at 750kVA standby.
Q2: Can this 550kVA Cummins generator be customized for 60Hz frequency and different voltages?
A: Absolutely. While 50Hz (1500 RPM, 400V/230V) is standard, we configure 60Hz (1800 RPM, 440V/480V/220V) versions utilizing the KTA19-G3A platform and matching Stamford alternators to comply with regional standards.
Q3: How does the Deep Sea DSE6120 controller simplify generator maintenance?
A: The DSE6120 incorporates an internal engine maintenance scheduler. It tracks accumulated running hours and displays visual reminders when fuel filter, lube oil, or air filter replacements are due, helping maintenance staff avoid costly unplanned engine downtimes.
Q4: What is the typical fuel consumption rate for this 550kVA Cummins generator?
A: At 100% prime power load (400kW / 500kVA), the Cummins KTA19-G3A engine consumes approximately 107 to 110 liters of diesel fuel per hour. At 75% load, consumption drops to around 80 to 83 liters per hour, offering outstanding operational fuel economy.
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