General data of Cummins CCEC NTA855-G3 Diesel Engine for Generator Set
Engine Model	Cummins CCEC NTA855-G3
Type	4 Stroke,In-line,6 Cylinder
Displacement	14 L
Bore&Stroke	140*152 mm
Dry Weight(Fan to flywheel engine)	1315 KG
Wet Weight(Fan to flywheel engine)	1369 KG
Center of Gravity from Rear Face of Flywheel Housing	704 mm
Center of Gravity Above Crankshaft Centerline	140 mm

Technical data of Cummins CCEC NTA855-G3 Diesel Engine for Generator Set
Aspiration	Turbocharged,Aftercooled
Fuel System	PT Pump Direct Injection
Coolant capacity-engine only	20.8L
Oil Pan Capacity-Low/High	28.4/36L
Idle speed	575-675 RPM
Maximum No-Load Govemed Speed	2100 RPM
Maximum Overspeed Capability	2700 RPM
Frictional loss power/rated output	35 KW
Compression ratio	14.0:1
Piston Speed	9.1m/sec
Firing Order	1-5-3-6-2-4

Performance Date of Cummins CCEC NTA855-G3 Diesel Engine for Generator Set
Rated Output/Speed	358KW/480HP/1800RPM
Standby Output/Speed	399KW/535HP/1800RPM
Torque/Rated Output	1703N.m/1800RPM
Torque/Standby Output	1896N.m/1800RPM
Fuel Consumption/Rated Output	L/h
Fuel Consumption/Standby output	L/h

Cummins NTA855-G3 Engine Performance and Maintenance Guide

The Cummins NTA855-G3 engine, model SO15476, manufactured in 2007 by Hotan Generator, is renowned for its exceptional performance parameters, which are critical for assessing its operational efficiency and application suitability. A detailed analysis of this engine reveals its key characteristics and technical specifications, aiding in informed selection and optimal utilization.

Key Features and Technical Specifications:
- **Production Instruction Number**: SO15476
- **Manufacturing Year**: 2007
- **Design Purpose**: Specifically designed for 399GF (standby) generator sets, capable of operating at 60Hz single-unit configuration.
- **Engine Configuration**: Straight-six, four-stroke with a cylinder bore of 140mm (5.5 inches), stroke of 152mm (6.00 inches), and total displacement of 14 liters (855 cubic inches).
- **Intake System**: Turbocharged and intercooled, enhancing performance and efficiency.
- **Fuel Consumption**: Rated at 73 liters per hour, translating to 19.3 grams per kilowatt-hour, which is a reasonable consumption rate for this class of generator sets.
- **Dimensions and Weight**: Dimensions are 1298mm (length) x 817mm (width) x 1367mm (height), with a total weight of 1433 kilograms (3160 pounds). The standard oil pan capacity is 34.1 liters (9 gallons).

Performance Metrics:
- **Rated Power Output**: 358 kilowatts at 1800 rpm.
- **Standby Power Capability**: Can provide up to 399 kilowatts (1800 KVA) under certain conditions.

Maintenance and Repair:
The comprehensive list of parts numbers serves as an essential reference for maintenance and repair activities. Key components include:
- Oil rings
- Alternators
- Valve cover plates
- Oil coolers

These part numbers ensure that suitable replacement parts can be quickly identified and sourced when required. For technicians and operators currently using or planning to use this Cummins engine, this guide will serve as an invaluable resource. It provides crucial information for troubleshooting common issues such as combustion chamber carbon deposits and start relay failures, enabling timely and effective problem resolution.