Details
Genuine CCEC Cummins NT855-G Generator Drive Engine Assembly
The Cummins NT855-G generator drive engine is a heavy-duty 14 litre diesel engine developed for industrial generator set applications requiring stable 1500RPM operation and long-duration standby performance. Manufactured under Chongqing Cummins Engine Co., Ltd. (CCEC), the NT855-G remains widely used in commercial power generation systems, infrastructure projects, mining sites, and emergency backup installations.
Unlike many modern electronically controlled engines, the NT855-G uses a proven mechanical PT fuel system that continues to be preferred in regions where service simplicity and maintenance accessibility are important considerations. This makes the engine particularly suitable for export generator projects operating in remote environments with varying fuel quality conditions.
The engine is commonly matched with 275kVA diesel generator sets and can be integrated with Stamford, Leroy Somer, or Marathon alternators depending on project requirements.
Tech Specs of Cummins NT855-G
General Engine Data
Engine Model: Cummins NT855-G
Type: 6 Cylinders in Line, 4 Stroke Diesel
Displacement: 14 L
Bore * Stroke: 140 * 152
Net Weight: 1380 Kg
Overall Dimension: 1980mm*900mm*1600mm
Key Performance Data
Rated Power/Standby Output: 205 kW/275HP, 225 kW/302HP
Rated Speed: 1500 rpm
Low Idle Speed: 575-650 rpm
Fuel Consumption: 49 L/Kw.h
Torque @Rated/Standby Output: 1305/1433 N.m @ 1500 rpm
More Technical Data
Fuel System: Cummins PT Pump, Direct Injection
Aspiration: Turbocharged
Electrical System (Starter Motor/Alternator): 24V/900A
Governor Type: Mechanical Control
Compression Ratio: 15:1
Lowest Starting Temp (Without auxiliary system): -12℃
Coolant Volume (Engine Only): 20.8 L
Cooling Method: Water Cooled
1500RPM 50Hz Prime vs Standby Performance Data
The operating environment dictates how you should configure your engine. For markets in Africa, Europe, and Southeast Asia operating on a 50Hz grid, the engine must run precisely at 1500RPM. At this speed, the Cummins NT855-G 1500rpm 50Hz prime power rating delivers dependable baseload electricity. Continuous prime application allows for unlimited annual operating hours with a 10% overload capability available for one hour out of every twelve.
When deployed as an NT855-G industrial standby power engine, the output ratings increase to handle emergencies. Standby power mode assumes the engine will operate for a maximum of 200 hours per year during utility grid failures. Mismanaging these ratings reduces engine life. Running a standby-configured engine continuously causes thermal stress on the pistons and turbocharger blades, which voids factory warranty protections.
Mechanical PT Fuel System & Cooling Architecture
The defining characteristic of the CCEC Cummins NT855-G diesel engine is the proprietary Cummins PT (Pressure-Time) fuel system. Unlike modern common-rail systems, the PT fuel system relies completely on mechanical camshaft synchronization. This design makes the engine highly resilient to variable fuel quality, making it a reliable choice for remote job sites.
Effective thermal management is critical for continuous operations. The Cummins NT855-G cooling system uses a gear-driven water pump paired with a high-capacity radiator configuration. Forced coolant circulation prevents localized hot spots around the cylinder heads. The integrated jacket water heater keeps coolant temperatures optimal for instant starting during standby grid failures.
Application Scenarios: Industrial Power Solutions
275kVA Generator Sets for Critical Backup Infrastructure
The power output of this 14-liter mechanical engine makes it the standard choice when building an NT855-G engine for 275kVA generator sets. When coupled with an efficient alternator, it hits the performance sweet spot for mid-sized commercial emergency systems.
These setups serve as excellent Cummins NT855-G diesel engine systems for hospital backup power. In medical environments, power must restore within 10 seconds of grid failure. The high-torque mechanical governor on the PT pump responds immediately, stabilizing voltage and frequency to protect sensitive life-support systems.
Heavy-Duty Overseas & Mining Power Stations
For rugged operating conditions, this model serves as a durable Cummins NT855-G engine for mining power stations. Mines create dusty, high-altitude environments that cause electronic engines to trip or derate power. The mechanical NT855-G runs reliably despite dust and elevation, maintaining steady output for crushers, ventilation fans, and camp infrastructure.
HekoPower frequently supplies the Cummins NT855-G for Africa power projects and the Southeast Asia generator market. These regions demand robust machinery that local technicians can fix using basic mechanical tools. Because the NT855 has been globally established for decades, spare parts remain widely available in regional distribution hubs.
Maintenance Intervals & Engineering Lifecycle Tips
PT Pump Calibration & Fuel System Care
Long-term reliability depends on proper fuel system upkeep. The Cummins NT855-G PT fuel system requires regular inspections every 1,500 operating hours. Technicians should verify the fuel rail pressure and check the fuel pump's mechanical governor settings. Over time, contaminated diesel fuel wears down the internal gear pump, leading to low fuel pressure and engine power loss.
Adjusting injector timing also prevents carbon buildup on the valves. Correct overhead adjustments ensure clean fuel combustion and optimal NT855-G fuel consumption data. Clean combustion reduces dark exhaust soot and preserves the turbocharger seals.
Routine Filter & Oil Changes
Adhering to strict Cummins NT855-G maintenance intervals maximizes engine life. Replace the engine oil and the spin-on lubricating oil filters every 250 operating hours. Because this engine uses heavy industrial oil pans, always use high-grade 15W-40 diesel engine oil.
Change fuel filters and water separators concurrently to protect the PT injectors from water corrosion. Inspect the heavy-duty air cleaners weekly in high-dust environments like mines. Clogged air filters alter the air-to-fuel ratio, raising exhaust temperatures and reducing overall power output.
Procurement, Global Logistics & Serial Verification
Genuine CCEC Serial Number Verification Guide
The market includes many refurbished blocks sold as brand-new units. To address this, HekoPower provides a complete genuine CCEC Cummins NT855-G serial number verification guide with every transaction. Every engine block features a stamped metallic data plate showing its unique factory serial number (ESN).
Buyers can verify this ESN directly through the official Cummins QuickServe network. This lookup confirms the exact manufacturing date, original parts composition, and Control Parts List (CPL) code. This transparent process guarantees you receive an original factory assembly rather than a rebuilt engine using aftermarket components.
Export Packaging & Overseas Shipping Protocols
As an experienced NT855-G diesel engine export company, HekoPower uses secure packaging protocols to protect your investment during ocean transit. Standard shipments use heavy-duty, fumigated wooden crates lined with anti-rust vapor barrier bags. This protects precision steel components from salt-air corrosion during sea transit.
We coordinate all export logistics from major ports like Shanghai, Ningbo, and Shenzhen, managing customs documentation for overseas genset projects. Whether buying an individual unit or sourcing wholesale, HekoPower offers competitive Cummins NT855-G factory price options tailored to international distributors and generator manufacturers.
Cummins N855-G Series, original products from Chongqing Cummins Engine Plant(CCEC). This series mainly includes NT855-G, NT855-GA, NT855-G1, NT855-G1A, NT855-G1B, NTA855-G2, NTA855-G2A, NTA855-G3, NTA855-G4, NTA855-G7, NTA855-G7A.
Frequently Asked Questions (FAQ)
What is the difference between Chongqing Cummins (CCEC) and Dongfeng Cummins (DCEC) for the NT855 engine?
The NT855 engine series is manufactured exclusively by Chongqing Cummins Engine Co., Ltd. (CCEC) in China. Dongfeng Cummins (DCEC) produces smaller automotive and industrial engine series, such as the B, C, and L series. Any supplier listing a DCEC NT855 engine is displaying inaccurate technical information.
Can the Cummins NT855-G engine run on biodiesel blends?
Yes, the mechanical PT fuel system can accommodate low-percentage biodiesel blends up to B20, provided the fuel meets international ASTM D6751 specifications. However, using biodiesel requires shorter fuel filter replacement intervals because it can loosen fuel tank sediments.
What is included in a complete Cummins NT855-G generator engine assembly from HekoPower?
Our complete engine assembly includes the core cylinder block, cylinder head, crankshaft, camshaft, turbocharger, PT fuel injection pump, water pump, oil cooler, starter motor, and charging alternator. We can also include an attached cooling radiator panel depending on your installation needs.
