250kW 313kkVA Cummins Generator Set NTA855-G1B

Generator Set Specifications

Specification	Technical Data
Product Name	250kW 313kVA Cummins Generator Set NTA855-G1B
Genset Model	TPD350C5-2 / 250kW Cummins Land Type Diesel Generator
Prime Power (PRP)	250 kW / 313 kVA
Standby Power (ESP)	275 kW / 344 kVA
Engine Model	Cummins NTA855-G1B
Recommended Alternator	Stamford HCI444D / S4L1D-D41
Rated Voltage	400V / 230V (Customizable to 380V, 415V, 440V, 480V)
Rated Frequency	50Hz
Rated Speed	1500 RPM
Rated Current	451 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	NTA855-G1B
Engine Type	6-cylinder in-line, 4-stroke diesel engine
Aspiration	Turbocharged and aftercooled
Displacement	14.0 Liters
Bore × Stroke	140 mm × 152 mm
Compression Ratio	14.0 : 1
Rated Speed	1500 RPM
Gross Engine Output	Approx. 280 kWm (Prime Power)
Fuel System	Cummins PT fuel system
Governor Type	Electronic governor
Cooling System	Radiator water-cooled system
Lube Oil Capacity	38.6 Liters
Coolant Capacity	Approx. 60 Liters (including radiator)
Fuel Consumption (100% Load)	71.0 Liters/hour
Fuel Consumption (75% Load)	53.0 Liters/hour
Fuel Consumption (50% Load)	36.0 Liters/hour

Alternator Specifications

Specification	Technical Data
Alternator Brand	Stamford
Recommended Model	HCI444D (or equivalent S4L1D-D41)
Rated Output	313 kVA / 250 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

High-Performance 250kW Cummins Generator Set: Engineered for robust land use, this 313kVA Cummins diesel generator provides reliable prime and standby power for manufacturing plants, mining sites, hospitals, and commercial facilities.
Powered by Cummins NTA855-G1B Engine: Utilizes the heavy-duty 14.0L Cummins NTA855-G1B diesel engine, famous for its exceptional torque, structural durability, and superior load acceptance in harsh industrial environments.
Efficient Cummins PT Fuel System: Equipped with the patented Cummins PT fuel injection technology, ensuring precise fuel atomization, reduced emissions, and excellent fuel economy (71 L/h at 100% full load).
Premium Stamford Alternator: 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.
Intelligent Deep Sea Controller: 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.
Open Type and Silent Type Configurations: Available as a space-saving Open Type Cummins Generator for indoor engine rooms, or a weather-proof Silent Type Cummins Generator with acoustic insulation for outdoor installations requiring strict noise reduction.
Global Maintenance and Support: Fully backed by the worldwide Cummins and Stamford service networks, ensuring easy access to OEM spare parts and professional technical support across the globe.

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)

3000 mm

Width (W)

1100 mm

Height (H)

1850 mm

Dry Weight

2760 kg

Silent Type

Length (L)

4000 mm

Width (W)

1400 mm

Height (H)

2150 mm

Dry Weight

4400 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

250kW 313kkVA Cummins Generator Set NTA855-G1B

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