G3516C Gas Generator Set

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

Generator Set Specifications
Continuous Rating 1660 ekW
Fuel Type Natural Gas
Maximum Electrical Efficiency 37.70%
Maximum Standby Rating 1500
Frequency 50 / 60 Hz
RPM 1500/1800
Engine Specifications
Engine Model G3516C
Displacement 69 l (4210 inu00b3)
Aspiration TA
Bore 170 mm (6.7 in)
Stroke 190 mm (7.5 in)
Generator Set Dimensions
Length 5553 mm (219 in)
Width 1828 mm (72 in)
Height 2340 mm (92 in)
Dry Weight - Genset 14161 kg (31226 lb)

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)

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