Cummins NTA855-G1B Engine Performance Data
Download the latest Cummins NTA855-G1B engine performance data and technical datasheet for free, including power, fuel consumption and specifications.
Cummins NTA855-G1B Diesel Engine – Technical Data
The Cummins NTA855-G1B is a 14-litre, 6-cylinder diesel engine designed for reliable generator set applications. Featuring a turbocharged and aftercooled configuration and Cummins PT fuel system, the engine provides dependable power output and stable performance for demanding power generation applications.
The published performance data covers 1500 rpm and 1800 rpm applications. For GENLITEC POWER 50 Hz generator sets, the NTA855-G1B is configured for 1500 rpm and is matched to a generator set rated at 250 kW prime power and 275 kW standby power.
Key Specifications
| Engine Model | NTA855-G1B |
| Engine Brand | Cummins |
| Cylinders | 6, Inline |
| Displacement | 14 L (855 in³) |
| Bore × Stroke | 140 × 152 mm |
| Compression Ratio | 14:1 |
| Aspiration | Turbocharged & Aftercooled |
| Fuel System | Cummins PT Fuel System |
| Rated Speed | 1500 rpm for 50 Hz |
| GENLITEC Prime Power | 250 kW |
| GENLITEC Standby Power | 275 kW |
Performance Highlights
At 1500 rpm, the NTA855-G1B provides up to 284 kW (380 HP) of prime power and 321 kW (430 HP) of standby power according to the published engine performance data. For the GENLITEC POWER 50 Hz generator set application, the engine is configured for 250 kW prime power and 275 kW standby power.
At 1500 rpm, the published fuel consumption is approximately 69.5 L/h at 100% prime power, 53.1 L/h at 75% load, 37.6 L/h at 50% load and 21.3 L/h at 25% load. These values are based on the manufacturer's specified test conditions.
Technical Datasheet
The Cummins NTA855-G1B technical datasheet provides detailed engine performance information, including power output, fuel consumption, torque, intake air flow, exhaust gas flow, exhaust temperature, heat rejection and generator drive engine operating conditions at 1500 rpm and 1800 rpm.
Engine Performance Data
| Parameter | 1500 rpm | 1800 rpm |
|---|---|---|
| Prime Power | 284 kW / 380 HP | 313 kW / 420 HP |
| Standby Power | 321 kW / 430 HP | 347 kW / 465 HP |
| Fuel Consumption @ 100% Prime Power | 69.5 L/h | 77.3 L/h |
| Fuel Consumption @ 75% Load | 53.1 L/h | 59.2 L/h |
| Fuel Consumption @ 50% Load | 37.6 L/h | 41.7 L/h |
| Fuel Consumption @ 25% Load | 21.3 L/h | 23.0 L/h |
| Torque @ Prime Power | 1623 N·m | 1490 N·m |
| Intake Air Flow | 375 L/s | 448 L/s |
| Exhaust Gas Flow | 980 L/s | 1149 L/s |
| Exhaust Gas Temperature | 485 °C | 466 °C |
| Heat Rejection to Coolant | 206 kW | 235 kW |
Operating Conditions
The published performance data is based on ISO 3046 standard reference conditions of 100 kPa barometric pressure, 25°C ambient temperature and 30% relative humidity. The engine operates with fuel corresponding to Grade No. 2-D per ASTM D975.
The engine may operate at 1500 rpm or 1800 rpm up to 5,000 ft (1,525 m) altitude and 104°F (40°C) ambient temperature without power derating. For sustained operation above these conditions, power derating should be applied according to the manufacturer's guidelines.
The datasheet also includes generator drive engine application guidelines covering standby power, prime power and continuous power ratings, together with operating requirements for proper engine application.
Free Technical Datasheet Download
Download the latest Cummins NTA855-G1B engine performance datasheet for free. The technical document includes detailed power ratings, fuel consumption data, performance curves, operating conditions and generator drive engine application guidelines.
Generator Set Application
The Cummins NTA855-G1B diesel engine is matched with GENLITEC POWER diesel generator sets for reliable 50 Hz power generation applications. It is configured for a GENLITEC POWER generator set rated at 250 kW prime power and 275 kW standby power.
This engine-generator combination is suitable for commercial, industrial, construction, infrastructure and standby power applications where dependable power performance is required.
