256kW 320kkVA Cummins Generator Set QSL8.9-G30

Generator Set Specifications

Specification	Technical Data
Product Name	256kW 320kVA Cummins Generator Set QSL8.9-G30
Genset Model	C320D5 / 256kW Cummins Land Type Diesel Generator
Prime Power (PRP)	256 kW / 320 kVA
Standby Power (ESP)	281 kW / 352 kVA
Engine Model	Cummins QSL8.9-G30
Recommended Alternator	Stamford S4L1D-D41 / HCI444D
Rated Voltage	400V / 230V (Customizable to 380V, 415V, 440V, 480V)
Rated Frequency	50Hz
Rated Speed	1500 RPM
Rated Current	462 Amps at 400V, 3-phase
Power Factor	0.8 (Lagging)
Phase & Connection	3 Phase, 4 Wire (Y-type connection)
Cooling Method	Closed water-cooled radiator system
Starting System	24V DC electric start
Control System	Deep Sea DSE7320 MKII
Voltage Regulation	AVR automatic voltage regulation, ±1.0%

Engine Specifications

Specification	Technical Data
Engine Manufacturer	Cummins
Engine Model	QSL8.9-G30
Engine Type	6-cylinder in-line, 4-stroke diesel engine
Aspiration	Turbocharged and Charge Air Cooled
Displacement	8.9 Liters
Bore × Stroke	114 mm × 145 mm
Compression Ratio	16.6 : 1
Rated Speed	1500 RPM
Gross Engine Output	Approx. 290 kWm (Prime Power)
Fuel System	High-Pressure Common Rail (HPCR)
Governor Type	Electronic governor (ECM)
Cooling System	Radiator water-cooled system
Lube Oil Capacity	34.0 Liters
Coolant Capacity	Approx. 41 Liters (including radiator)
Fuel Consumption (100% Load)	66.0 Liters/hour
Fuel Consumption (75% Load)	50.0 Liters/hour
Fuel Consumption (50% Load)	34.0 Liters/hour

Alternator Specifications

Specification	Technical Data
Alternator Brand	Stamford
Recommended Model	S4L1D-D41 (or equivalent HCI444D)
Rated Output	320 kVA / 256 kW
Rated Voltage	400V / 230V
Rated Frequency	50Hz
Power Factor	0.8 lagging
Excitation System	Brushless, self-excited (PMG optional)
AVR Model	AS440 / MX341
Voltage Regulation	±1.0%
Insulation Class	Class H
Protection Grade	IP23
Winding Pitch	2/3 pitch
Bearing Type	Single bearing

Engineered for robust land use, this 256kW Cummins Generator Set provides reliable prime and standby power for manufacturing plants, mining sites, data centers, and commercial facilities.
Utilizes the advanced 8.9L Cummins QSL8.9-G30 Generator Set engine, featuring High-Pressure Common Rail (HPCR) technology for exceptional torque, fast transient response, and superior load acceptance.
The electronic engine management system ensures precise fuel atomization, significantly reducing emissions while delivering excellent fuel economy for this 320kVA Cummins Diesel Generator.
Paired with a genuine Stamford alternator featuring Class H insulation and an advanced AVR, guaranteeing stable voltage output, low waveform distortion, and safe operation for sensitive electronics.
Features the Deep Sea DSE7320 MKII control module with a user-friendly LCD interface, providing real-time monitoring of engine parameters, automatic mains failure (AMF) detection, and comprehensive fault protection.
Available as a space-saving Cummins Open Type Generator for indoor engine rooms, or a weather-proof Cummins Silent Type Generator with acoustic insulation for outdoor installations requiring strict noise reduction.
Fully backed by the worldwide Cummins and Stamford service networks, ensuring easy access to OEM spare parts and professional technical support across the globe for your 256kW Land Use Diesel Generator.

Bespoke Manufacturing

Engineered to Your Exact Specifications

From standard backup power to complex multi-megawatt parallel systems, we customize every aspect of your generator set to ensure peak performance in your specific operational environment.

Open Skid Type

Standard configuration for indoor plant rooms. Features a heavy-duty fabricated steel base frame with built-in anti-vibration mounts.

Silent Canopy

Weatherproof and highly sound-attenuated (down to 65dB(A) @ 7m). Built with cold-rolled steel and fire-retardant acoustic foam.

Mobile Trailer

Single or dual-axle designs with mechanical/air brakes and lighting systems. Ideal for mining, construction, and rental applications.

Containerized

ISO standard 20ft/40ft containers for high-capacity units (500kVA+). Offers ultimate protection and simplifies global shipping.

Core Components

Alternator Upgrades

Partnering with Stamford, Leroy Somer, and Mecc Alte. We offer custom configurations including:

PMG Excitation System
IP44/IP55 Protection
Anti-condensation Heaters
Heavy-duty Winding

Intelligent Controllers

Equipped with Deep Sea (DSE), ComAp, or SmartGen modules, enabling advanced power management:

Remote SCADA Monitoring
Auto Mains Failure (AMF)
Multi-unit Synchronization
Cloud-based Diagnostics

Comprehensive Solutions

Beyond hardware, our engineering team provides end-to-end services to ensure your power system integrates seamlessly into your project.

Extreme Climate Prep

Engine water/oil pre-heaters for cold regions, and sand-proof louvers with heavy-duty air filters for deserts.

Parallel & Sync Systems

Design and manufacture of synchronization panels to run multiple generator sets in parallel for large loads.

Custom ATS Panels

Automatic Transfer Switches tailored to your grid voltage, ensuring seamless switching during power outages.

Testing & Certification

Rigorous Factory Acceptance Testing (FAT) with load banks. Support for CE, ISO9001, and SGS third-party inspections.

Open Type

Length (L)

2780 mm

Width (W)

1120 mm

Height (H)

1830 mm

Dry Weight

2300 kg

Silent Type

Length (L)

3850 mm

Width (W)

1400 mm

Height (H)

2100 mm

Dry Weight

3250 kg

Dimensional & Assembly (DA) Drawing

Available upon request

Technical Data Sheet

Generator Set Specifications

Engine Specifications

Alternator Specifications

Engineered to Your Exact Specifications

Open Skid Type

Silent Canopy

Mobile Trailer

Containerized

Core Components

Alternator Upgrades

Intelligent Controllers

Comprehensive Solutions

Extreme Climate Prep

Parallel & Sync Systems

Custom ATS Panels

Testing & Certification

Open Type

Silent Type

Dimensional & Assembly (DA) Drawing

Before confirming this configuration

Get a Custom Quote

Request a quote

256kW 320kkVA Cummins Generator Set QSL8.9-G30

Technical Data Sheet

Generator Set Specifications

Engine Specifications

Alternator Specifications

Engineered to Your Exact Specifications

Open Skid Type

Silent Canopy

Mobile Trailer

Containerized

Core Components

Alternator Upgrades

Intelligent Controllers

Comprehensive Solutions

Extreme Climate Prep

Parallel & Sync Systems

Custom ATS Panels

Testing & Certification

Open Type

Silent Type

Dimensional & Assembly (DA) Drawing

Before confirming this configuration

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Get a Custom Quote

Request a quote