25kW 30kVA Cummins Industrial Generator Set 4B3.9-G12

Generator Set Specifications

Specification	Technical Data
Product Name	25kW 30kVA Cummins Industrial Generator Set 4B3.9-G12
Genset Model	TPD34C5/ 25kW Cummins Land Type Diesel Generator
Prime Power (PRP)	25 kW / 30 kVA
Standby Power (ESP)	27.5 kW / 34 kVA
Engine Model	Cummins 4B3.9-G12
Recommended Alternator	Stamford PI144E / Leroy Somer TAL-A42-C
Rated Voltage	400V / 230V (Customizable to 380V, 415V, 440V)
Rated Frequency	50Hz
Rated Speed	1500 RPM
Rated Current	45 Amps at 400V, 3-phase
Power Factor	0.8 (Lagging)
Phase & Connection	3 Phase, 4 Wire
Cooling Method	Closed water-cooled radiator system
Starting System	12V DC electric start
Control System	Deep Sea DSE3110
Voltage Regulation	AVR automatic voltage regulation, ±1.0%

Engine Specifications

Specification	Technical Data
Engine Manufacturer	Cummins
Engine Model	4B3.9-G12
Engine Type	4-cylinder in-line, 4-stroke diesel engine
Aspiration	Naturally aspirated
Displacement	3.9 Liters
Bore × Stroke	102 mm × 120 mm
Compression Ratio	18.0 : 1
Rated Speed	1500 RPM
Gross Engine Output	Approx. 30 kWm
Fuel System	Direct injection fuel system
Governor Type	Mechanical governor
Cooling System	Water-cooled radiator system
Lube Oil Capacity	10.9 Liters
Coolant Capacity	Approx. 16 Liters
Fuel Consumption (100% Load)	7.2 Liters/hour
Fuel Consumption (75% Load)	5.5 Liters/hour
Fuel Consumption (50% Load)	3.9 Liters/hour

Alternator Specifications

Specification	Technical Data
Alternator Brand	Stamford
Recommended Model	PI144E (or equivalent Leroy Somer TAL-A42-C)
Rated Output	30 kVA / 25 kW
Rated Voltage	400V / 230V
Rated Frequency	50Hz
Power Factor	0.8 lagging
Excitation System	Brushless, self-excited
AVR Model	SX460 / Equivalent
Voltage Regulation	±1.0%
Insulation Class	Class H
Protection Grade	IP23
Winding Pitch	2/3 pitch
Bearing Type	Single bearing

This 25kW Cummins Industrial Generator Set is engineered for reliable land use applications, delivering stable power for farms, workshops, telecom stations, shops, small factories, and residential backup systems.
Powered by the dependable Cummins 4B3.9-G12 Generator Set engine, this unit provides long service life, stable output, and economical fuel consumption in daily operation.
The optimized direct injection system helps this 30kVA Cummins Diesel Generator achieve dependable performance, lower fuel usage, and easy maintenance.
Equipped with a high-quality Stamford alternator, the genset delivers stable voltage output, low harmonic distortion, and reliable protection for common electrical loads.
The integrated Deep Sea controller provides convenient monitoring, alarm protection, automatic shutdown, and easy daily operation for standby and prime power applications.
Available in both Cummins Open Type Generator and Cummins Silent Type Generator versions, this model supports indoor installation and outdoor low-noise use.
As a practical 25kW Land Use Diesel Generator, this unit is suitable for commercial backup power, agricultural use, construction projects, and light industrial applications.
Compact structure, small footprint, and convenient service access make this 30kVA Industrial Standby Generator an efficient and cost-effective power solution.

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)

1860 mm

Width (W)

750 mm

Height (H)

1350 mm

Dry Weight

700 kg

Silent Type

Length (L)

2250 mm

Width (W)

1000 mm

Height (H)

1540 mm

Dry Weight

1100 kg

Dimensional & Assembly (DA) Drawing

Available upon request

25kW 30kVA Cummins Industrial Generator Set 4B3.9-G12

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

25kW 30kVA Cummins Industrial Generator Set 4B3.9-G12

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