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G3520E

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Overview

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.

Generator Set Specifications

  • Maximum Continuous Rating 2022 ekW 2022 ekW
  • Fuel Type Natural Gas Natural Gas
  • Maximum Electrical Efficiency 41.50% 41.50%
  • Maximum Standby Rating 2022 2022
  • Frequency 50 50
  • RPM 1500 1500

Engine Specifications

  • Engine Model G3520E G3520E
  • Displacement 5248.0 in³ 86.0 l
  • Aspiration TA TA
  • Bore 6.7 in 170.0 mm
  • Stroke 7.5 in 190.0 mm
  • Fuel System Natural Gas Natural Gas
  • Compression Ratio 11.9 11.9

Generator Set Dimensions

  • Length 271.0 in 6893.0 mm
  • Width 79.0 in 2001.0 mm
  • Height 107.0 in 2727.0 mm
  • Dry Weight - Genset 39306.0 lb 17826.0 kg

CAT G3520E 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

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

CAT Electronic Control System

  • Simple user friendly interface and navigation
  • Digital monitoring, metering and protection setting
  • Fully-featured power metering and protective relaying
  • Remote control and monitor capability options

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

World Wide 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

G3520E Standard Equipment

Control Panel

  • EMCP 4.3

Air Inlet

  • Two-element single-stage air cleaner with enclosure and service indicator

Cooling

  • Standard CAT Flange
  • Right-Hand/Left-Hand Outlet Connections
  • Engine driven water pumps for jacket water and aftercooler
  • ANSI/DN adapter flange connections 

Exhaust

  • Individual  exhaust port and turbocharger outlet wired to Integrated Sensing Module (ISM) with Gas ECM providing alarms and shutdowns
  • Dry exhaust manifolds, insulated and shielded

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
  • Fuel filter
  • Engine installed, fuel metering valve
  • 24V ETR Gas Shutoff Valve
  • Throttle plate, 24V DC actuator, controlled by GECM

Ignition System

  • Individual Cylinder Detonation Sensitive Timing (DST) 
  • Electronic Ignition System (controlled by GECM) 

Generator

  • SR4B
  • Caterpillar's Digital Voltage Regulator (CDVR) with 3-phase sensing and KVAR/PF control
  • Busbar connections
  • SR5
  • Winding temperature detectors
  • Permanent Magnet Excitiation
  • Anti-condensation space heater
  • 3-phase brushless, salient pole

General

  • RH Service
  • Crankshaft vibration damper and guard
  • Paint - Caterpillar Yellow except rails and radiators gloss black

G3520E Optional Equipment

Air Inlet

  • Heavy duty air cleaner
  • Regular duty air cleaner
  • Air cleaner with precleaner
  • Mounting stand

Contol Panel

  • Local NFPA99-110 Alarm Module w/LEDs
  • PL1000E/PL1000T Communications Module
  • Remote 24V-32V 8/16 Light Annunciator
  • Custom 8-Light Alarm Module
  • Engine Failure Relay
  • Synchronizing Module

Control Panels

  • Local alarm module

Cooling

  • Jacket water coolant heater
  • Cat Flange, ANS/DIN Adapter Flange
  • Engine Pumps
  • Aftercooler air lines, aftercooler core replacement
  • Inlet/Outlet connections

Exhaust

  • 15/18/25 dBA Muffler Attenuation
  • 305/356mm Flange/Exhaust Expanders, 305/406mm Flange and Exhaust Expander
  • 356-406mm Flange and Exhaust Expander
  • Mufflers (15/18/25 dBA Attenuation) and spark-arresting muffler with ANSI companion flanges
  • 305/360/406 mm Elbow Kits
  • Flexible Fittings
  • 16" Spark Arresting Muffler

Fuel System

  • Gas Train (31.5 MJ/Nm3 with inlet pressure 19.2 to 48.3 kPa (2.78 to 7 psi))
  • Gas Train 0-100 kPag, 4-20mA pressure sensors
  • Fuel Filter, Gas Filter
  • 24VDC Gas Shutoff Valve, Gas Knockdown Regulator

Generator

  • Annunciator modules
  • Air filters, cable access box
  • Bearing temperature detectors
  • Low voltage extension box
  • 16 Point/32 light annunciator with NFPA99-110/CSA282 configuration
  • Extension box, European bus bars
  • Generator air filter
  • Medium and high voltage generators and attachment
  • 415/400/380, 3300/6600/11000 Volt Generator Options (50 Hz)
  • 480/4160/13200 Volt Generator Options (60 Hz)
  • 8/15/23M harness
  • 8.7/15 kV Cross, Differential, Current Transformers (CCCT, DCT, CT)
  • Cable access box

Governing System

  • Load share module

Starting/Charging

  • Battery diconnect switch
  • 45A, 24V charging alternator (requires engine driven pumps)
  • 24V Starting Motors
  • 20A Battery Charger
  • Battery with cables and rack (shipped loose)

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