Details
Genuine Cummins NTA855-G2A Generator Drive Engine
HekoPower is a CCEC factory original NTA855-G2A generator engine supplier providing direct, global access to the NTA855-G2A complete engine assembly. Manufactured by Chongqing Cummins, the CCEC Cummins NTA855-G2A 310kW engine is designed strictly for continuous prime power operations and reliable emergency standby applications. Operating as a dedicated NTA855-G2A 1500RPM diesel engine, this robust 14-liter block delivers stable frequency control for 50 Hz power grids without requiring highly sensitive electronics.
Power plant assemblers and heavy machinery fabricators standardise on the Chongqing Cummins NTA855-G2A for 350kVA generator applications due to its straightforward mechanical architecture. Under the exact engine configuration NTA855-G2A D093517DX02, procurement buyers receive a Cummins NTA855-G2A 14L generator engine that outputs an exact NTA855-G2A prime power 310kW standby 343kW specs rating. Whether you are building a new canopy from scratch or sourcing a direct drop-in replacement, this 14-liter block provides the mechanical reliability required for the harshest global operating environments.
Tech Specs of Cummins NTA855-G2A
General Engine Data
Engine Model: Cummins NTA855-G2A
Type: 6 Cylinders in Line, 4 Stroke Diesel
Displacement: 14 L
Bore * Stroke: 140 * 152
Net Weight: 1410 Kg
Overall Dimension: 1980mm*900mm*1600mm
Key Performance Data
Rated Power/Standby Output: 310 kW/415HP, 343 kW/460HP
Torque @Rated/Standby Output: 1974/2184 N.m @ 1500 rpm
Rated Speed: 1500 rpm
Low Idle Speed: 575-650 rpm
Fuel Consumption @ Rated Power: 72 L/Kw.h
More Technical Data
Fuel System: Cummins PT Pump, Direct Injection
Aspiration: Turbocharged & Aftercooled
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
Technical Comparisons Within the Cummins N855 Family
Selecting the right Cummins NTA855-G2A generator engine requires understanding how its thermal and mechanical limits differ from adjacent CCEC models. We frequently receive engineering inquiries comparing the CCEC NTA855-G2A G-Drive engine with the lower-tier NT855-GA or the higher-capacity NTA855-G3. The primary differences lie in the aspiration approach and the precise factory tuning of the fuel pump.
The standard NT855 series relies on basic turbocharging, which caps its thermal limits early and restricts its continuous output capabilities. Moving up the tier, the NTA855-G2A turbocharged aftercooled engine introduces a water-to-air cooling circuit that drastically reduces intake manifold temperatures. This integrated aftercooler allows the Cummins NTA855-G2A 6 cylinder engine to push much denser air into the combustion chamber, safely reaching the NTA855-G2A 343 kW standby engine rating without cracking the cylinder head under thermal stress. While the higher-tier NTA855-G3 pushes beyond this output limit, it requires a significantly larger cooling package footprint that may not fit inside standard 350kVA soundproof canopies.
A close review of the NTA855-G2A C-173E performance curve reveals the operational sweet spot for this specific model. The Cummins NTA855-G2A 310 kW 1500 RPM engine sustains an impressively flat NTA855-G2A torque at 1500 RPM, peaking near 1974 N.m during continuous prime operation. This massive rotational torque profile means the Cummins NTA855-G2A 415 HP engine fiercely resists frequency drooping when sudden heavy electrical loads hit the attached alternator. For facilities that demand strict 50 Hz grid stability, the Cummins NTA855-G2A 415 HP generator engine vastly outperforms lighter displacement engines that often struggle with transient load recovery.
Real Application Scenarios for the NTA855-G2A 50 Hz Generator Engine
The NTA855-G2A diesel engine serves as the mechanical backbone for decentralized power generation across multiple heavy industries. Our international clients primarily source the NTA855-G2A engine for industrial generator set assembly, particularly in remote mining sites and oilfield base camps where municipal grid power is completely non-existent. In these prime power environments, the 310 kW Cummins engine for generator set runs continuously for weeks, stopping only for scheduled fluid and filter changes. When an industrial site starts large electric motors or heavy conveyor belts, the inductive load creates a massive transient voltage dip. The 14-liter displacement provides the necessary rotational inertia to push through these spikes and prevent the alternator field from collapsing.
Telecommunications is another major sector relying on this specific block. Facility managers explicitly request the NTA855-G2A engine for telecom backup generator systems because of its mechanical simplicity. A purely mechanical NTA855-G2A G-Drive engine remains immune to complex ECU failures or electromagnetic interference that might disable modern, sensor-heavy electronic engines during a severe storm. When the primary grid drops unexpectedly, the NTA855-G2A 460 HP standby generator engine accepts a massive immediate load step to keep regional data centers and radio towers online.
Similarly, we see high volume demand for the NTA855-G2A engine for commercial standby power in rural hospitals, cold storage warehouses, and large agricultural processing plants. Facilities combining this NTA855-G2A engine for 50 Hz genset with a well-sized alternator rely on the exact NTA855-G2A 140 x 152 mm engine geometry to ensure long-term physical durability. Whether operating as a Cummins NTA855-G2A prime power generator engine or a Cummins NTA855-G2A standby generator engine, the heavy cast iron integrity stands up to decades of harsh thermal cycling.
Essential Maintenance and Replacement Tips for Genset Assembly
When an engineering firm sources a NTA855-G2A replacement engine, verifying the original calibration is critical to match the existing radiator, exhaust piping, and alternator setup. Always confirm that your current worn unit shares the exact NTA855-G2A CPL CQ130 Control Parts List designation. A matching CPL guarantees that the NTA855-G2A PT fuel pump and fuel injector sizing will communicate properly with your existing mechanical governor and load-sharing modules.
The Cummins NTA855-G2A PT fuel injection system details remain a strong selling point for fleet mechanics. The Pressure-Time direct injection system relies on a low-pressure gear pump rather than high-pressure common rail electronics, making it extremely tolerant to the varying fuel qualities frequently found in emerging markets. When consulting the NTA855-G2A fuel consumption curve at 1500 RPM, engineers will note that keeping the NTA855-G2A fuel consumption optimized simply requires routine valve lash and injector overhead adjustments every 1,500 hours. Beyond standard calibration, mechanics value the engine for its wet replaceable cylinder liners. This feature allows field technicians to rebuild the block in remote locations without hauling the entire unit to an urban machine shop.
For OEM fabricators dealing with custom canopy designs, referencing the exact NTA855-G2A engine dimensions and dry weight for genset assembly is non-negotiable. The NTA855-G2A engine dimensions and weight parameters specify a dry weight of 1300 kg and a wet weight around 1350 kg from fan to flywheel. Ensuring adequate steel skid base strength and proper vibration isolator selection depends entirely on these precise NTA855-G2A engine specifications.
Procurement officers must also factor in logistics and safe transit. As an experienced Cummins NTA855-G2A engine exporter, HekoPower manages the complete NTA855-G2A wholesale engine supply chain. The standard Cummins NTA855-G2A G-drive engine lead time and export packaging timeline typically runs 15 to 30 working days. We utilize treated, fumigation-free wooden cases that protect the NTA855-G2A engine for diesel genset against moisture and salt air corrosion during extended ocean freight.
Integrating the Right Model for Your Power Requirements
When engineering a new power setup or overhauling an existing machinery fleet, assessing the wider catalog ensures you match the exact load requirement without underpowering the alternator or overspending on excess capacity. Understanding the progression of power bands within the same engine family helps buyers make precise, cost-effective sourcing decisions.
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 & Technical Misconceptions
What are the main differences between the NTA855-G2A and the NTA855-G4?
The differences lie in their performance tuning and physical turbocharger configurations. The NTA855-G2A is optimized for a prime output of 310kW at 1500RPM. The NTA855-G4 uses a different air intake matching profile to deliver a higher output of 317kW under identical speed settings.
Can the NTA855-G2A engine be modified to run continuously at 1800RPM for 60Hz generator applications?
No. The engine configuration number D093517DX02 indicates that the fuel injection timing, mechanical governor links, and internal aftercooler balances are tuned specifically for 1500RPM (50Hz) operation. For 1800RPM requirements, you should order the factory-configured NTA855-G2B variant.
Can I run the CCEC NTA855-G2A 310 kW diesel engine at 1800 RPM for a 60 Hz application?
No. This specific NTA855-G2A 1500 RPM G-Drive engine has its mechanical governor and PT fuel pump factory-calibrated exclusively for 50 Hz operation. Speeding up a 1500 RPM locked engine to 1800 RPM will ruin the fuel map injection timing, overheat the engine block, and immediately void the manufacturer warranty. For 60 Hz applications, you must source the NTA855-G3 or the dedicated 60 Hz variant within the CCEC N855 series.
What is the difference between the 310 kW and 343 kW rating on the data sheet?
Many buyers misinterpret the NTA855-G2A engine data sheet when sizing their alternators and end up overloading their equipment. The 310 kW figure represents continuous prime power, meaning the engine can run at variable loads for an unlimited number of hours per year. The 343 kW figure is strictly for emergency standby power, limited to a maximum of 500 hours annually with absolutely no overload capability. If you are building a Cummins NTA855-G2A replacement engine for 400kVA standby genset, 343 kW is your absolute maximum mechanical output limit.
Is the NTA855-G2A a fully electronic engine?
A widespread misconception is that all modern 14-liter engine blocks rely on an electronic control unit. The NTA855-G2A diesel engine for sale utilizes the fully mechanical PT fuel system. There are no electronic injectors or complex ECU harnesses, which makes it highly desirable for underground mining operations and the NTA855-G2A engine for 350 kVA generator setups in remote regions lacking advanced diagnostic computer equipment.
What fuel is recommended for this mechanical engine?
The engine operates reliably on standard No. 2-D diesel fuel per ASTM D975 specifications. However, the mechanical PT pump is notoriously resilient and can handle higher sulfur content fuels commonly found in developing regions, which is why it remains the preferred choice for cross-border heavy engineering projects.
