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G3520C Gas Generator Sets

From low energy 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.

G3520C

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Cat® G3520C (1457kW-2082kW) Gas Generator models are the industry leader for operation on landfill gas, agricultural biogas and sewage gas fuels.

Continuous Rating
1972 ekW
Fuel Type
Low Energy, Biogas, Coal Gas
Maximum Electrical Efficiency
40.10%
Maximum Standby Rating
1972
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  • Specifications
  • Features
  • Standard Equipment

Specifications

Generator Set Specifications specifications
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

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

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

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
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

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

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)