550kW 688KVA Water-cooled Super Diesel Silent Generator
50/60Hz Single/Three Phase Portable Generators DCEC Cummin s
Product Overview
Our 550kW 688KVA BOBIG CUMMIN S diesel generator (Model: QSK19-G4) is engineered to deliver reliable power for diverse industrial, commercial, and residential applications. Backed by the renowned Cummin s brand, it offers exceptional performance, fuel efficiency, and long-term durability.
Key Features
Power Performance
- Rated Power: 550kW (688kVA) prime power with stable, efficient output
- Frequency: Standard 50Hz operation suitable for most electrical equipment
- Phase: Three-phase configuration with 400/230V rated voltage
- Power Factor: 0.8 for optimal electrical performance
Engine Excellence
- Engine Model: QSK19-G4 Cummin s engine with advanced technology
- Engine Speed: 1500 RPM for smooth, consistent power delivery
- Fuel System: Cummin s MCRS for optimal efficiency
- Cooling System: Force Water Cooling Cycle for reliable operation
Technical Specifications
| General Information |
Prime Power |
Standby Power |
| Rated Power (kVA) |
688 |
756 |
| Power Rating (kW) |
550 |
605 |
| Frequency (Hz) |
50 |
| Engine Model |
QSK19-G4 |
| Engine Speed (RPM) |
1500 |
| Phase |
3 |
| Power Factor |
0.8 |
| Control System |
Digital |
| Rated Voltage (V) |
400/230 |
| Fuel Tank Capacity Operating Time |
≥ 8h @ 75% load |
Dimensions and Weight
| Model |
BC756 (Open Type) |
BC756S (Silent Type) |
| Length (mm) |
3600 |
5000 |
| Width (mm) |
1500 |
2000 |
| Height (mm) |
2650 |
2400 |
| Tank Capacity (L) |
1265 |
1265 |
Engine Specifications
| Engine Model & Manufacturer |
QSK19-G4 (Cummin s) |
| Number of Cylinders |
6 |
| Cylinder Arrangement |
In-line |
| Cycle |
Four Stroke |
| Aspiration |
Turbocharged and Charge Air Cooled |
| Bore x Stroke |
159 x 159 mm |
| Displacement |
18.9 L |
| Compression Ratio |
15.0:1 |
| Prime Power/Speed |
574 kW/1500 rpm |
| Standby Power/Speed |
638 kW/1500 rpm |
| Fuel Consumption (100% load) |
215 g/kWh @1500 rpm |
| Total Lubrication System Capacity |
84.4 L |
| Coolant Capacity (engine only) |
41.6 L |
Alternator Specifications
| Alternator Brand |
BOBIG |
| Alternator Manufacturer |
FUJIAN BOBIG ELECTRIC MACHINERY CO.,LTD |
| Alternator Model |
BW-354F |
| Alternator Rated Power |
550kW/688kVA |
| Rated Voltage |
230V/400V |
| Rated Frequency |
50Hz |
| Connecting Type |
3 Phase and 4 Wire |
| Number of Bearings |
1 |
| Protection Grade |
IP23 |
| Altitude |
≤1000m |
| Exciter Type |
Brushless, Self-exciting, AVR automatic voltage regulating, 100% Copper |
| Insulation Class |
H class |
| Voltage Regulation, Steady State |
≤±1% |
Environmental Adaptability
- Ambient Temperature: Operational range of +5°C to +40°C
- Altitude: Suitable for use up to 1000m above sea level
- Custom solutions available for different environmental conditions
Certifications and Standards
Our generator complies with multiple international standards including ISO 8528-5:2018, GB/T2820.5-2009, and CE certification, ensuring quality, safety, and reliability.
Applications
- Industrial Use: Backup power for factories ensuring continuous production during outages
- Commercial Buildings: Power for office buildings, shopping malls, and hotels
- Residential Areas: Reliable power for communities with unstable power grids
Customization and Services
- Full customization and OEM services available with design drawings
- Standard DSE 6120 controller included (engine, generator, and controller options available)
- One-year or 1000-hour warranty (whichever comes first)
- 24/7 professional after-sales technical support and maintenance
Generator Image

Why Choose BOBIG Generators
- Brand Reputation: Cummin s engine technology with proven reliability
- Quality Assurance: Rigorous quality inspections and international standard compliance
- Customization Options: Tailored solutions for specific requirements
- Comprehensive Support: Full after-sales service and technical assistance