G3516C Gas Generator Set

Cat® G3516C (1173kW-1675kW) Natural Gas Generator models' industry leading design provides high efficiency while meeting emissions standards.


From natural gas-fueled combined heat and power (CHP) systems and emergency power for facilities, to renewable biogas energy to support the local grid, or electricity generated from coal mine gases, Caterpillar has a wide range of reliable gas power solutions.G3516C Generator SetElectric Power


50 / 60 Hz

Cat G3516C 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 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


  • 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

  • Standard Equipment
  • Optional Equipment
  • Specs
  • Docs

Standard Equipment

  • Air Inlet
    • Two-element single-stage air cleaner with enclosure and service indicator
  • Control Panels
    • EMCP 4.3
  • Cooling
    • Jacket water and SCAC driven pumps and bypass lines
    • 2nd Stage SCAC-Cat Flange
    • Engine driven water pumps for jacket water and aftercooler
    • Jacket water and SCAC thermostats
    • ANSI/DN customer flange connections for JW inlet and outlet
    • Cat flanges on SCAC circuit
  • Exhaust
    • Integrated Sensing Module (ISM)
    • Cat-flanged face outlet on turbocharger
    • Provides exhaust port temperatures and stack temperature to customer supplied screen via CCM
    • Dry exhaust manifolds, insulated and shielded
  • Fuel System
    • 24V ETR Gas Shutoff Valve
    • Engine installed, fuel metering valve
    • Throttle plate, 24V DC actuator, controlled by ECM
    • 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
    • Fuel Filter
  • Ignition System
    • Individual Cylinder Detonation Sensitive Timing (DST)
    • Electronic Ignition System (controlled by ECM)
  • Fuel system
    • Electronic fuel metering valve
  • Generator
    • Anti-condensation space heater
    • Busbar connections
    • Class H Insulation & Class F temperature rise
    • Reactive Droop
    • Permanent Magnet Excitation
    • 3-phase brushless, salient pole
    • Caterpillar's Digital Voltage Regulator (CDVR) with 3-phase sensing and KVAR/PF control
    • SR4B
    • Winding temperature detectors
  • General
    • RH Service
    • Operation and maintenance manuals
    • Crankshaft Vibration Damper and Guard
    • Parts Book
  • Starting/Charging
    • 24V starting motors

Optional Equipment

  • Air Inlet
    • Vertical, horizontal dual element air cleaner
    • Enclosure mounting brackets and piping
    • Air cleaner with precleaner
  • Control Panel
    • Local NFPA99-110 Alarm Module w/LEDs
    • Synchronizing Module
    • Remote 24V 8/16 Light Annunciator
    • Engine Failure Relay
    • PL1000E/PL1000T Communications Module
    • Custom 8-Light Alarm Module
  • Cooling
    • Inlet/Outlet connections
    • Jacket water coolant heater
    • Aftercooler air lines, aftercooler core replacement
  • Exhaust
    • Flexible Fittings
    • 14" Flange Kit
    • 406 mm Elbow Kits
    • 406 mm flange kits
    • Mufflers (15/18/25 dBA Attenuation) and spark-arresting muffler with ANSI companion flanges
    • 16" Spark Arresting Muffler
    • 356-406mm Flange and Exhaust Expander
    • 15/18/25 dBA Muffler Attenuation
  • Fuel System
    • 207-276kPa, 30-40 psi gas knockdown regulator
    • 14-69 kPa (2-10 psi) gas pressure regulator
    • 24VDC Gas Shutoff Valve, Gas Knockdown Regulator
    • Fuel Filter, Gas Filter
  • Generator
    • Cable access box
    • 8.7/15 kV Cross, Differential, Current Transformers (CCCT, DCT, CT)
    • Medium and high voltage generators and attachment
    • 480/4160/13200 Volt Generator Options (60 Hz)
    • Generator air filter
    • Bearing temperature detectors
    • European Bus Bars
    • 415/400/380, 3300/6600/11000 Volt Generator Options (50 Hz)
    • Annunciator Modules
    • Generator Removal
    • Low voltage extension box
  • Governing System
    • Load share module
  • General
    • Special paint order
    • Tool set
    • US AID Emblem
    • Barring group
    • Digital diagnostic tool
  • Starting/Charging
    • 60A, 24V charging alternator (requires engine driven pumps)
    • Battery removal
    • 20A battery charger
    • Battery disconnect switch
    • Battery with cables and rack (shipped loose)



Long Name:
G3516C Gas Generator Set

Generator Set Specifications

Continuous Rating
1660 ekW
Fuel Type
Natural Gas
Maximum Electrical Efficiency
Maximum Standby Rating
50 / 60 Hz

Engine Specifications

Engine Model
4210 in³ / 69 l
6.7 in / 170 mm
7.5 in / 190 mm

Generator Set Dimensions

219 in / 5553 mm
72 in / 1828 mm
92 in / 2340 mm
Dry Weight - Genset
31226 lb / 14161 kg