Generator Noise Levels: Understanding dBA Ratings

What Is Wet Stacking and How Do You Prevent It?

Resources

25 kW Enclosed
Diesel Generator

PTI-25SI

The PTI-25SI Enclosed Quiet Diesel Generator delivers 25 kW of dependable power, engineered with advanced sound-isolating paneling for exceptional noise reduction. Built with commercial-grade components, this Tier 4 Final compliant generator meets current emissions standards, making it an environmentally responsible choice. Popular among food truck operators, specialty vehicle manufacturers, and mobile medical units, the PTI-25SI combines durability, quiet operation, and regulatory compliance for a reliable power solution across various mobile applications.

Features

Upgrade your 25 kW generator

with Add-ons

Explore a broad spectrum of enhancements for your tailor-made generator at PowerTech. Our collection of add-ons significantly elevates the efficiency and performance of your personalized power solution. Whether it’s for a specialty vehicle or a custom trailer, our dedicated sales and engineering team is ready to assist you in selecting the most suitable enhancements to meet your unique needs.

Slide Rack

remote control panel

fuel Tank

PTI-25SI Airflow

The PowerTech PTI-25SI quiet enclosed 25 kW diesel generator features an efficient airflow system designed to optimize performance, even in challenging, warm climates. This system draws air from the base pan of the generator, where it is filtered and directed through the engine compartment. As the air passes through, it helps cool vital components before being expelled through the radiator side of the unit. This design ensures that hot air is effectively vented away from sensitive areas, preventing overheating and maintaining steady operation under load. The air circulation system is a hallmark of the PowerTech lineup, offering enhanced cooling efficiency and reliability in mobile power generation, especially in high-temperature environments.

Genset Information

Engine Specification

Dimensions: 50″L X 27 1/2″W X 30 5/8″H
Weight: 1,081 LBS
Fuel Type: Ultra-Low Sulfur Diesel (ULSD)
Fuel Consumption: Full Load 2.5 gph, Half Load 1.3 gph
Fuel Lift Pump: Genset Mounted, Electric, 18″-24″ Max Vertical Lift
Service Interval: 250 Hours
Engine Coolant: Dex-Cool, Ethylene Glycol, 50/50, 8.5 QTs
Engine Oil: 15W-40, 8 QTs
Engine Electrical System: 12VDC
Starting Battery, 12V 500 CCA, Min. (Battery Not Included with Generator Set)
Fuel Bulkhead Fittings: 1/4″ NPT
Fuel Lines: Supply 3/8″, Return 3/8″
Exhaust Outlet 2″ NPT

Disclaimer: Weights and dimensions shown may vary and are for guidance only. Please confirm with your PowerTech Sales Representative before ordering.

Make: Isuzu
Model: 4LE2X
Engine Type: Diesel, 4 Stroke
Configuration: Vertical In-Line, OHV, Liquid Cooled
Cylinders: 4
Valves: 8
Displacement:2.2L (134.3ci)
Compression Ratio: 17.6:1
Aspiration: Turbocharged & Intercooled
Fuel System: Common Rail, Direct Injection
Starting Aid: Glow Plugs
Emissions Equipment: EGR, DOC (Diesel Oxidation Catalyst)
EPA Tier: Tier 4 Final
Rated Power: 66HP @ 1800rpm
Electrical System: 12Vdc
Alternator Output: 50A

Generator End Specifications (Single Phase)

Type: Synchronous A/C Generator
Exciter Type: Self-Excited, Brushless, AVR Equipped
Rotor Support: Single Bearing
Frame Type: Open
Cooling: Fan Cooled
Insulation Class: H
Winding Pitch: 2/3
Ambient Temperature: 40 C
Temperature Rise 125 C
Service Rating: Continuous
Voltage: 240VAC
Frequency: 50/60 Hz
Power Factor 1.0
Phase: 1
Number of Poles: 4
Number of Leads: 4
Voltage Regulation: +/- 1%
Harmonic Distortion: <4%
Loading Recovery Time: <500 msec
Load Imbalance Allowed 25% (Maximum)

Main Circuit Breaker

Number of Poles: 3
Trip Type: Fixed Thermal, Fixed Magnetic
Max Rated Voltage: 600VAC
Interrupt Rating: 18kAIC @ 240VAC, 14kAIC @480VAC
Frequency Rating: 50/60 Hz
Direct Short Trip Time: 10 msec

Generator Power Output at 60Hz - 25kw

Phase	Power Factor	Voltage	Amps
1	1.0	120	208
1	1.0	120/240	208/104

Generator Power Output at 50Hz - 20.7kW

Phase	Power Factor	Voltage	Amps
1	1.0	220	94
1	1.0	230	90

Generator controller Specifications

Make: Dynagen
Model: TG 600
Display: 4.3″, Color, Sunlight Readable
Moisture Resistance: IP67
Communication: CAN Bus J1939, RS-485 (Modbus)
Switched Inputs: 12
Switched Outputs: 10
Analog Inputs: 10

Standard Controller Monitoring and Shutdown

System	Warning	Shutdown
Oil Pressure	X	X
Coolant Temperature	X	X
Coolant Level		X
Fuel Filter Restriction	X
Air Filter Restriction	X
Generator Voltage	X	X
Generator Frequency	X	X
Generator Over Current	X	X
Engine Speed	X	X

Generator options

High Lift Fuel Pump, 120” Max Vertical Lift
Block Heater, 120v, 400 Watt
Emergency Stop Programming & Pigtail
Fuel Level Sender Programming & Pigtail
Low Battery Auto Start Programming
Other Options May Be Available Upon Request

View More Enclosed Generators

PTI-25SI

Genset Information

Dimensions: 50″L X 27 1/2″W X 30 5/8″H
Weight: 1,081 LBS
Fuel Type: Ultra-Low Sulfur Diesel (ULSD)
Fuel Consumption: Full Load 2.5 gph, Half Load 1.3 gph
Fuel Lift Pump: Genset Mounted, Electric, 18″-24″ Max Vertical Lift
Service Interval: 250 Hours
Engine Coolant: Dex-Cool, Ethylene Glycol, 50/50, 8.5 QTs
Engine Oil: 15W-40, 8 QTs
Engine Electrical System: 12VDC
Starting Battery, 12V 500 CCA, Min. (Battery Not Included with Generator Set)
Fuel Bulkhead Fittings: 1/4″ NPT
Fuel Lines: Supply 3/8″, Return 3/8″
Exhaust Outlet 2″ NPT
Weight: 1126 lbs.

Disclaimer: Weights and dimensions shown may vary and are for guidance only. Please confirm with your PowerTech Sales Representative before ordering.

Engine Specification

Make: Isuzu
Model: 4LE2X
Engine Type: Diesel, 4 Stroke
Configuration: Vertical In-Line, OHV, Liquid Cooled
Cylinders: 4
Valves: 8
Displacement:2.2L (134.3ci)
Compression Ratio: 17.6:1
Aspiration: Turbocharged & Intercooled
Fuel System: Common Rail, Direct Injection
Starting Aid: Glow Plugs
Emissions Equipment: EGR, DOC (Diesel Oxidation Catalyst)
EPA Tier: Tier 4 Final
Rated Power: 66HP @ 1800rpm
Electrical System: 12Vdc
Alternator Output: 50A

Generator End Specifications (Single Phase)

Type: Synchronous A/C Generator
Exciter Type: Self-Excited, Brushless, AVR Equipped
Rotor Support: Single Bearing
Frame Type: Open
Cooling: Fan Cooled
Insulation Class: H
Winding Pitch: 2/3
Ambient Temperature: 40 C
Temperature Rise 125 C
Service Rating: Continuous
Voltage: 240VAC
Frequency: 50/60 Hz
Power Factor 1.0
Phase: 1
Number of Poles: 4
Number of Leads: 4
Voltage Regulation: +/- 1%
Harmonic Distortion: <4%
Loading Recovery Time: <500 msec
Load Imbalance Allowed 25% (Maximum)

Main Circuit Breaker

Number of Poles: 3
Trip Type: Fixed Thermal, Fixed Magnetic
Max Rated Voltage: 600VAC
Interrupt Rating: 18kAIC @ 240VAC, 14kAIC @480VAC
Frequency Rating: 50/60 Hz
Direct Short Trip Time: 10 msec

Generator Power Output at 60Hz - 25kw

Phase	Power Factor	Voltage	Amps
1	1.0	120	208
1	1.0	120/240	208/104

Generator Power Output at 50Hz - 20.7kW

Phase	Power Factor	Voltage	Amps
1	1.0	220	94
1	1.0	230	90

Generator controller Specifications

Make: Dynagen
Model: TG 600
Display: 4.3″, Color, Sunlight Readable
Moisture Resistance: IP67
Communication: CAN Bus J1939, RS-485 (Modbus)
Switched Inputs: 12
Switched Outputs: 10
Analog Inputs: 10

Standard Controller Monitoring and Shutdown

System	Warning	Shutdown
Oil Pressure	X	X
Coolant Temperature	X	X
Coolant Level		X
Fuel Filter Restriction	X
Air Filter Restriction	X
Generator Voltage	X	X
Generator Frequency	X	X
Generator Over Current	X	X
Engine Speed	X	X

Generator options

High Lift Fuel Pump, 120” Max Vertical Lift
Block Heater, 120v, 400 Watt
Emergency Stop Programming & Pigtail
Fuel Level Sender Programming & Pigtail
Low Battery Auto Start Programming
Other Options May Be Available Upon Request

25 kW EnclosedDiesel Generator

Features

Upgrade your 25 kW generator

Slide Rack

remote control panel

fuel Tank

PTI-25SI Airflow

Genset Information

Engine Specification

Generator End Specifications (Single Phase)

Main Circuit Breaker

Generator Power Output at 60Hz - 25kw

Generator Power Output at 50Hz - 20.7kW

Generator controller Specifications

Standard Controller Monitoring and Shutdown

Generator options

View More Enclosed Generators

PTI-20SS

PTI-25ENC

PTI-30ENC

PTI-30SI

Request A Quote

25 kW Enclosed
Diesel Generator