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Cummins KT38-G 679kW 1800RPM Generator Engine (CCEC Original)
The Cummins KT38-G 679kW diesel engine is a high-performance 60Hz generator drive engine developed by Chongqing Cummins (CCEC) for heavy-duty standby and prime power applications. As part of the proven K38 platform, this 12-cylinder, 37.8L engine delivers reliable 679kW output at 1800RPM, making it ideal for industrial generator sets, mining operations, and large-scale backup power systems.
Tech Specs of Cummins KT38-G 679kW
General Engine Data
Engine Model: Cummins KT38-G-679KW
Type: 12 Cylinders, 60° V Type, 4 Stroke Diesel
Displacement: 37.8 L
Bore * Stroke: 159 * 159
Net Weight: 3954 Kg
Overall Dimension: 2341mm*1360mm*1653mm
Key Performance Data
Rated Power, Standby Output: 679 kW/910HP, 747 kW/1000HP
Rated Speed: 1800 rpm
Low Idle Speed: 725-775 rpm
Fuel Consumption @ Rated Power: 154 L/Kw.h
More Technical Data
Engine Exhaust Manifold: Optional for Wet Exhaust manifold Heat exchanger
Aspiration: Turbocharged
Compression Radio: 15.5:1
Fuel System: Cummins PT Pump, Direct Injection
Starting System: Electrical starting motor (24V)
Cooling Method: Water cooling
Lowest Starting Temp (Without auxiliary system): -12℃
Governor Type: Mechanical Control
KT38-G 679kW Engine Key Advantages
High Power Output for 60Hz Generator Systems
The Cummins KT38-G-B G-drive engine is designed for 60Hz applications, delivering stable 679kW prime power and up to 747kW standby output. It is widely used in 750kVA–900kVA diesel generator sets.
Proven 12-Cylinder 37.8L Platform
This engine features a V-type 12-cylinder configuration with a displacement of 37.8L and bore/stroke of 159×159 mm, ensuring excellent durability and long service life in continuous operation.
Cummins PT Fuel System Efficiency
Equipped with the Cummins PT fuel system, the KT38-G engine provides:
- Precise fuel delivery
- Improved combustion efficiency
- Lower fuel consumption (approx. 154 L/kW·h at optimal load)
Operational Efficiency and Maintenance
Understanding KT38-G fuel consumption at 75% load 679KW is critical for OPEX planning. The original Cummins KT38-G achieves approximately 154 L/H (specific values vary by load), making it cost-effective for long-term operation. HekoPower supports every sale with a comprehensive maintenance kit for Cummins KT38-G 679KW, including filters, gaskets, and valve clearance adjustment settings guides. We also supply replacement parts such as the cylinder head part number specific to CCEC and ensure turbocharger model compatibility for future overhauls.
Core Applications
The 679kW Cummins generator engine is a versatile workhorse. HekoPower recommends this model for:
- Data Centers & Hotels: As a high-power backup generator, it ensures zero downtime during mains power failure.
- Mining & Construction: The KT38-G diesel engine for mining power plants is built to withstand dust, vibration, and continuous heavy-duty cycles.
- Commercial Backup: Perfect for hotel high-power backup generators and data centers requiring standby power 679KW Cummins KT38-G configuration.
- Prime Power Generation: When rated for continuous duty, it serves as a reliable Cummins KT38-G industrial genset engine for remote grids.
KT38-G vs Other K38 Series Models
KT38-G 679kW vs KT38-G 560kW
- Higher output for larger generator loads
- Suitable for 750kVA+ gensets
KT38-G vs KTA38-G1 / G2
A common question we receive at HekoPower is the KT38-G vs KTA38-G1 difference. While both belong to the Cummins K38-G series engine family, the KT38-G is specifically tuned for the 1800RPM / 60Hz market. Compared to the KTA38-G2, the KT38-G offers a specialized torque curve that is better suited for rapid-start standby applications in 60Hz regions like North America and parts of Asia.
- KT38-G: optimized for standard generator drive
- KTA38-G1/G2: enhanced variants with higher ratings
KT38-G-679KW vs KTA38-G1-634KW
When comparing CCEC KT38-G-679KW vs KTA38-G1-634KW, the KT38-G provides a higher power density (679kW vs 634kW) making it the preferred choice for 750kVA genset requirements where space is limited but power demand is high.
Why Choose HekoPower as Your Cummins Supplier
HekoPower provides:
- Original CCEC Cummins engines
- Competitive wholesale pricing
- Fast delivery (15–30 working days)
- Global export experience
- Spare parts and maintenance support
We ensure that every KT38-G engine supplied meets factory standards and international export requirements.
We also supply:
- Cylinder heads and overhaul kits
- Turbochargers and fuel system components
- Maintenance kits and filters
Our team supports customers with technical guidance and long-term service solutions.
Looking for alternative power solutions? Explore our full range of Cummins K38-G series engines. Cummins K38-G Series, original products from Chongqing Cummins Engine Plant(CCEC). This series mainly includes KT38-G-560KW, KTA38-G1-634KW, KTA38-G2-664KW, KTA38-G2A-813KW, KTA38-G2B-711KW, KTA38-G5-880KW, KTA38-G9A-1195KW, KT38-G-679KW, KTA38-G2-809KW, KTA38-G2A-915KW, KTA38-G4-1007KW.
