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300KW Cummins Engine NTAA855-G7 Diesel Generator Set

Apr. 14, 2020

300KW Cummins diesel generator set manufacturer shares the specifications with you.


1.Diesel generator set specification

Genset model: XG-300GF

Engine model: Chongqing Cummins NTAA855-G7

Alternator: Wuxi Stamford HCI 444FS1

Controller: Deep Sea 7320 MKII

Country of Origin: China

Genset type: open type/silent canopy type/mobile trailer type

Manufacturer: Jiangsu Starlight Electricity Equipments Co.,Ltd.


2.Diesel engine data

General engine data

Manufacturer: Chongqing Cummins Engine Co.,Ltd.


Prime power:343KW/460HP

Standby power:377KW/505HP

Cylinders: 6

Speed: 1500 r/min

Displacement: 14L

Bore x Stroke: 140 x 152 mm

Fuel System: direct injection Cummins PT

Aspiration: Turbocharged & Air-Air Cooled

Fuel Consumption: 85.4L/h(100% prime), 64.7L/h (75% prime), 44.6L/h (50% prime), 24.6L/h(25%).

All data is based on: 

 --Engine operating with fuel corresponding to grade No.2-D per ASTM D975.

 --ISO 3046, Part1, Standard Reference Conditions of : Barometric Pressure:100kPa(29.5in.Hg);Air Temperature:

25°C (77°F) ; Relative Humidity: 30% Output Power Fuel Consumption

 --Engine Operating with fuel system, water pump, lubricating oil pump, air cleaner and exhaust silencer, fan, and optional driven components.

Reference Standards:BS-5514 and DIN-6271 standards are based on ISO-3046.

 Open Type 300kw Cummins genset

Engine mounting

Maximum Allowable Bending Moment at Rear Face of Block - 1000 lb./ft. (1356 N/m) 

Exhaust system

Maximum Allowable Back Pressure -3.0in.Hg ( 10 kPa)  

Standard Exhaust Pipe Diameter - 5.0in. (127mm) 

Air induction system

Maximum Allowable Intake Air Restriction

 -With Clean Filter Element -  3.74 in. H2O (15kPa) 

 -With Dirty Filter Element - 25 in. H2O (6.22 kPa) 

Maximum Intake Pressure Fall from Turbo to Intake Manifold - 5.0PSI (17 kPa)  

Maximum Intake Manifold Temperature Rise - 43 °F (24 °C) 

Minimum Dirt Holding Capacity - 25g/CFM (  53 g/L/s ) 

Cooling system 

Coolant Capacity - Engine Only -5.5 U.S. gal (20.8L)

 -With Radiator - 16.0U.S. gal ( 60.6 L) 

Maximum Coolant Friction Head External to Engine -  6 PSI (41kPa)

Maximum Coolant Pressure (exclusive of Pressure Cap) -  40PSI (276 kPa) 

Maximum Static Head of Coolant Above Engine Crank Centerline -46ft. (14.0 m)   

Standard Thermostat (Modulating) Range - 180 - 202 °F (82 - 94 °C) 

Minimum Allowable Pressure Cap -7.0 PSI (48.2kPa) 

Maximum Coolant Temperature - 205 °F (96°C) 

Maximum Top Tank Temperature -  212 °F (100°C)

Minimum Top Tank Temperature - 160°F ( 71°C)  

Minimum Coolant Expansion Space - 5% of System Capacity  

Minimum Coolant Makeup Capacity - U.S. gal (L)

Lubrication system 

Oil Pressure @ Idle Speed - Min 15PSI (103 kPa)  

 @ Governed Speed - 35-50PSI (241 - 345kPa) 

Maximum Allowable Oil Temperature - 250°F ( 121°C)  

Oil Pan Capacity - Low / High - 7.5 / 9.5U.S. gal. (28.4 / 36.0L)  

Total System Capacity - 10.2U.S. gal. (38.6L)  

Angularity of Oil Pan - Front Down/Front Up/Side to Side 38°/38°/38°

Fuel system 

Type Injection System Direct Injection Cummins PT

Maximum Allowable Restriction to Fuel Pump

 -With Clean Fuel Filter - 4.0 in.Hg (13.5 kPa) 

 -With Dirty Fuel Filter - 8.0in.Hg (27.1kPa) 

Maximum Allowable Head on Injector Return Line

 -With Check Valve - 22.0in.Hg (6.5kPa)  

 -Without Check Valve - 8.5in.Hg (2.5kPa)  

Minimum Fuel Supply Line Size - 0.625in. (16mm)  

Minimum Fuel Return Line Size - 0.5in. ( 13mm)  

Maximum Fuel Pump Supply - 98U.S.gal/h (371L)  

Fuel Rail Pressure - 149PSI (1028kPa)

Maximum Fuel Temperature  71°F (160°C) 

Electrical system

Minimum Recommended Battery Capacity - 24V 

 -Cold Soak (No Load) - 900CCA

 - Minimum Reserved Capacity -320CCA

 -Cold Soak (With Load) - 900CCA

 - Minimum Reserved Capacity - 320CCA

Maximum Allowable Resistance of Cranking Circuit - 0.002ohm. Standard Cranking Motor (Heavy Duty , Positive Engagement24volt. Standard Battery Charging System. Negative Ground 35Ampere. 

Performance data

Idle Speed -575-650r/min  

Maximum No-Load Governed Speed -1800r/min  

Maximum over Speed Capability - 2700r/min  

Minimum Crankshaft Rotation for unaided Cold Start - 150r/min 

Minimum Torque for unaided Cold Start - 375lb.ft. (509Nm) 

Exhaust Sound Pressure at 1m from Exhaust Outlet -1500r/min -dBA N/A

3.Alternator data 

Alternator: Wuxi Stamford HCI 444FS1

Manufacturer: Cummins Generator Technology(China) Co.,Ltd.

Power capacity: 375kva

Speed: 1500r/min

Automatic voltage regulator(AVR)


Newage Stamford industrial generators meet the requirements of BS EN 60034 and the relevant section of other international standards such as BS5000, VDE0530, NEMA MG1-32, IEC34, CSA C22.2-100, AS1359.

Other standards and certifications can be considered on request.

Insulation system: class H

Protection: IP23

Rated power factor: 0.8lag

Wingding pitch: two thirds

Stator winding: double layer LAP

Bearing: single bearing


4.Controller data

Model: Deep Sea 7320 MKII

Manufacturer: Shenzhen Haiway Technology Co.,Ltd.

The DSE7320 MKII is a powerful, new generation Auto Mains (Utility) Failure genset control module with a highly sophisticated level of new features and functions, presented in the usual DSE user-friendly format. Suitable for a wide variety of single, diesel or gas Gen-set applications.

Deep Sea 7320 MKII


Comprehensive monitoring of the mains (utility) supply and auto changeover.

4-line back-lit LCD text display

Five key menu navigation

Support for up to three remote display units

Configurable inputs (8)

Configurable analogue / digital inputs (6)

Configurable outputs (8)

Tier 4 CAN engine support.

Integral PLC editor.

Manual fuel pump control.

Power monitoring (kW h, kVAr, kv Ah, kV Ar h), reverse power protection, kW overload protection.

Mains monitoring and automatic start and changeover to generator power in the event of a mains (utility) out of limits or failure.

Configurable CT positioning.

Data logging facility

Customisable power up text and images Company logo can be uploaded to the start up splash screen.

Support for 0-10 V & 4-20mA oil pressure senders.

Can be configured for use as a remote display module Single product can be used for dual functionality.


We are a diesel generator manufacturer, having focused on high quality for more than 43 years. If you have purchase plan, please contact us by sales@dieselgeneratortech.com.

Contact Us
  • Adds: No.2 Xingguang Road, Guxi Industrial Park, Taixing, Jiangsu, China.
  • Tel: +86 771 5805 269
  • FAX: +86 771 5805 259
  • Cellphone: +86 134 8102 4441
                    +86 138 7819 8542
  • E-mail: sales@dieselgeneratortech.com
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