Overview
G3520K Gas Generator
Specifications
Units:
| Continuous Rating | 2567 / 2552 ekW @ 1.0pf |
| Fuel Type | Natural Gas & Propane |
| Maximum Electrical Efficiency | 46.0% |
Benefits & Features
Cat G3520K Gas Engine
- Robust high speed block design provides prolonged life and lower owning operationg costs
- Designed for maximum performance on low pressure pipeline natural gas
- Simple open chamber combustion system for reliability and fuel flexibility
- Leading edge technology in ignition system and air/fuel ratio control for lower emission and engine efficiency
- One electronic control module handles all engine functions: ignition, governing, air/fuel ratio control and engine protection
SR5 Generator
- Designed to match performance and output characteristics of Caterpillar gas engines
- Industry leading mechanical and electrical design
- High efficiency
Cat Energy Control System (Cat ECS)
- A cost effective but powerful system
- Modern color touch screen
- Meets UL6200 controls and UL2300 3rd ed. generator set package requirements
- Local annunciation to meet NFPA 110
October 24, 2025
Specifications
Units:
| Continuous Rating | 2567 / 2552 ekW @ 1.0pf |
| Fuel Type | Natural Gas & Propane |
| Maximum Electrical Efficiency | 46.0% |
| Frequency | 50 / 60 Hz |
| RPM | 1500 |
| Frequency | 50/60 Hz |
| Engine Model | G3520K |
| Displacement | — |
| Aspiration | TA |
| Bore | — |
| Stroke | — |
| Compression Ratio | 10.5:1 |
| Length | — |
| Width | — |
| Height | — |
| Dry Weight - Genset | — |
Benefits & Features
Cat G3520K Gas Engine
- Robust high speed block design provides prolonged life and lower owning operationg costs
- Designed for maximum performance on low pressure pipeline natural gas
- Simple open chamber combustion system for reliability and fuel flexibility
- Leading edge technology in ignition system and air/fuel ratio control for lower emission and engine efficiency
- One electronic control module handles all engine functions: ignition, governing, air/fuel ratio control and engine protection
SR5 Generator
- Designed to match performance and output characteristics of Caterpillar gas engines
- Industry leading mechanical and electrical design
- High efficiency
Cat Energy Control System (Cat ECS)
- A cost effective but powerful system
- Modern color touch screen
- Meets UL6200 controls and UL2300 3rd ed. generator set package requirements
- Local annunciation to meet NFPA 110
Emissions
- Meets most worldwide emissions requirements down to 0.5 g/bhp-hr Nox level without aftertreatment
Proven System
- Field proven in a wide range of applications worldwide
- Fully prototype tested
- Certified torsional vibration analysis available
Full Range of Attachments
- Wide range of bolt-on system expansion attachments
- Factory designed and tested
- Flexible packaging options for easy and cost effective installation
Worldwide Product Support
- Cat dealers have over 1,800 dealer branch stores operating in 200 countries
- Your local Cat dealer provides extensive post-sale support, including maintenance and repair agreements
Data not available.
Standard Equipment
- Control Panel
- ECS 100 with colored HMI
- Ethernet Telematics
- Air Inlet
- Two-element single-stage air cleaner with enclosure and service indicator.
- Cooling
- Engine driven water pumps for jacket water and aftercooler.
- Jacket water and SCAC thermostats.
- ANSI/DN customer flange connections for JW inlet and outlet.
- SCAC control valve
- Governing System
- ADEM A6 4-20mA (0-5V) Speed Input
- Exhaust
- Center section cooled turbocharger with Cat flanged outlet.
- Dry exhaust manifolds, insulated and shielded.
- Individual exhaust port and turbocharger outlet wired to Integrated Tmeperature Sensing Module (ITSM) with GECM providing alarms and shutdowns.
- Fuel System
- Electronic fuel metering valve
- Throttle plate, 24V DC actuator, controlled by GECM
- EN7462/CSAB149:3, NFPA37
- Fuel system is sized for 31.5 to 47.2 MJ/NM3 dry pipeline natural gas with pressure of 10.2 to 34.5KPa to the engine fuel control valve.
- Generator
- IVR - Intergrated voltage regulator
- Crankshaft Vibration Damper and Guard
- Busbar connections
- Paint- Caterpillar Yellow except rails gloss black
- Winding temperature detectors
- Operation and maintenance manuals
- Parts book
- Anti-condensation space heater
- RH/LH Service
- SR5
- Reactive droop
- Lube
- Electric Pre-lube pump
- Starting/Charging
- 24V starting motors
- Ignition System
- Electronic Ignition System (controlled by ADEM 6)
- In Cylinder Pressure Sensor (ICPS)
Optional Equipment
- Control Panel
- ECS 200 with colored HMI
- Remote HMI displays
- Cellular telematics
- Expandable I/O
- Expandable Ethernet modules
- CAN 2 connection point
- Load Share Module
- Lube
- Ship oil filled or dry(Ultra40)
- SYNHP (only ship dry)
- Oil Level Regulator
- Starting/Charging
- Battery with cables and rack (shipped loose)
- Engine barring device
- Jacket water heater (220/400/240/480V)
- 60A, 24V charging alternator (requires engine driven pumps)
- Circuit Breaker
- LSI/LSIG/LSIG-P Long-Time, Short-Time, Instantaneous Annunciator, ground fault protect, ground fault annunciate
- Non-par/Par Breakers
- Rear-mounted
- 5000A 3-Pole IEC/ULCSA Rated Circuit Breakers
- Air Inlet
- Off Engine Air Cleaner - Mounting Brackets and Piping
- Cooling
- Inlet/Outlet RH and LH connections
- Coolant level drain line with valves
- Exhaust
- Muffler and spark-arresting muffler with companion flanges
- Flange, Elbow, and Flexible Fitting
- Exhaust Expander
- Fuel System
- Gas Knockdown Regulator
- Fuel filter
- Gas pressure regulator
- Gas shutoff valve 24V, Energized-To-Run (ETR)
- Generator
- Bearing temperature detectors
- Cable access box
- Low voltage extension box
- Manual voltage control
- NEMA/IEC Busbars
- Generator air filter
- Medium and high voltage generators and attachment
- Generator space heater (with optional heater control)
- Thermostate for space heater
- Current transformer, differential current transformer, potential transformer
- General
- Digital diagnostic tool
- Special paint order
- Tool set
- US AID Emblem
- Package
- Spring Isolators
- Seismic Isolators