Specifications
Units:
| Continuous Rating | 1972 ekW |
| Fuel Type | Low Energy, Biogas, Coal Gas |
| Maximum Electrical Efficiency | 40.10% |
Benefits & Features
Cat G3520C 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
SR4B or SR5 Generator
- Designed to match performance and output characteristics of Caterpillar gas engines
- Industry leading mechanical and electrical design
- High efficiency
EMCP 4.3 Control Panel
- User-friendly interface and navigation
- Scalable system to meet a wide range of installation requirement
- Expansion modules and site-specific programming for specific customer requirements
October 21, 2025
Specifications
Units:
| Continuous Rating | 1972 ekW |
| Fuel Type | Low Energy, Biogas, Coal Gas |
| Maximum Electrical Efficiency | 40.10% |
| Maximum Standby Rating | 1972 |
| Frequency | 50 / 60 Hz |
| RPM | 1200 / 1500 / 1800 rpm |
| Engine Model | G3520C |
| Displacement | — |
| Aspiration | TA |
| Bore | — |
| Stroke | — |
| Fuel System | Low Energy, Biogas, Coal Gas |
| Compression Ratio | 11.3 |
| Length | — |
| Width | — |
| Height | — |
| Dry Weight - Genset | — |
| Weight | — |
Benefits & Features
Cat G3520C 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
SR4B or SR5 Generator
- Designed to match performance and output characteristics of Caterpillar gas engines
- Industry leading mechanical and electrical design
- High efficiency
EMCP 4.3 Control Panel
- User-friendly interface and navigation
- Scalable system to meet a wide range of installation requirement
- Expansion modules and site-specific programming for specific customer requirements
Cooling System
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
- Air Inlet
- Two-element single-stage air cleaner with enclosure and service indicator
- Control Panels
- EMCP 4.3
- Cooling
- ANSI Class 6 in/DN customer flange connections for JW inlet and outlet
- Engine driven water pumps for jacket water and aftercooler
- 2nd Stage SCAC-Cat Flange
- Jacket water and SCAC driven pumps
- Jacket water and SCAC thermostat and outlet--ANSI 6 in/DN150
- Exhaust
- Dry exhaust manifolds, insulated and shielded
- Cat-flanged face outlet on turbocharger
- Individual exhaust port and turbocharger outlet wired to Integrated Tmeperature Sensing Module (ITSM) with GECM providing alarms and shutdowns
- Fuel System
- 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
- Electronic fuel metering valve, ANSI flange
- Throttle plate, 24V DC actuator, controlled by GECM
- 24V ETR Gas Shutoff Valve
- Ignition System
- Electronic Ignition System (controlled by GECM)
- Individual Cylinder Detonation Sensitive Timing (DST)
- Generator
- 3-phase brushless, salient pole
- Class F Insulation & temperature rise
- Reactive droop
- Permanent Magnet Excitiation
- Winding temperature detectors
- Anti-condensation space heater
- SR4B or SR5
- Busbar connections
- Caterpillar's Digital Voltage Regulator (CDVR) with 3-phase sensing and KVAR/PF control
- SR4B
- General
- Crankshaft Vibration Damper and Guard
- RH Service
- Parts Book
- Operation and maintenance manuals
- Paint - Caterpillar Yellow except rails and radiators gloss black
Optional Equipment
- Air Inlet
- Enclosure Mounting Brackets and Piping
- Mounting stand
- Air cleaner with precleaner
- Contol Panel
- Custom 8-Light Alarm Module
- Local NFPA99-110 Alarm Module w/LEDs
- Remote 24-32V 8/16 Annunciator
- Synchronizing Module
- PL1000E/PL1000T Communications Module
- Engine Failure Relay
- Control Panels
- Local alarm module
- Cooling
- Inlet/Outlet connections
- Engine pumps
- Aftercooler air lines, aftercooler core replacement
- Jacket water coolant heater
- Exhaust
- Mufflers (15/18/25 dBA Attenuation) and spark-arresting muffler with ANSI companion flanges
- Exhaust expanders
- Flexible fittings
- 305/360/406 mm Elbow Kits
- Fuel System
- 14-69 kPa (2-10 psi) gas pressure regulator
- Fuel filter
- 24V DC Gas shutoff valve
- 207-276kPa, 30-40 psi gas knockdown regulator
- Generator
- Generator Removal
- Annunciator Modules
- Medium and high voltage generators and attachment
- 60 Hz--480/4160 Volt Generator Options
- Cable access box
- Generator air filter
- European Bus Bars
- Low voltage extension box
- Bearing temperature detectors
- 8.7/15 kV Class Current Transformers (CCCT, DCT, CT)
- 50 Hz--3300/6600 Volt Generator Options
- Governing System
- Load share module
- Starting/Charging
- Jacket water heater
- Battery diconnect switch
- 24V starting motors
- Battery with cables and rack (shipped loose)
- 60A, 24V charging alternator (requires engine driven pumps)