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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 Sets Specification

Units:
Maximum Continuous Rating 2022 2022 Less

Generator Set Specifications

Fuel Type Natural Gas Natural Gas Less

Generator Sets Specifications

Maximum Electrical Efficiency 41.50% 41.50% Less
Maximum Standby Rating 2022 2022 Less
Frequency 50 50 Less
RPM 1500 1500 Less

Engine Specifications

Engine Model G3520E G3520E Less
Aspiration TA TA Less
Bore 6.7 in 170.0 mm Less
Stroke 7.5 in 190.0 mm Less
Fuel System Natural Gas Natural Gas Less
Compression Ratio 11.9 11.9 Less

Generator Set Dimensions

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

Emissions

Full Range of Attachments

World Wide Product Support

SR5 Generator

EMCP4.2 Control Panel

Proven System

CAT G3520E Gas Engine

CAT Electronic Control System

G3520E Standard Equipment

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

Control Panel
  • EMCP 4.3

Control Panels
  • EMCP 4.3

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
  • Busbar connections
  • 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
  • Caterpillar's Digital Voltage Regulator (CDVR) with 3-phase sensing and KVAR/PF
  • 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
  • Jacket water coolant heater
  • 20A Battery Charger
  • Battery with cables and rack (shipped loose)

Why Choose Cat® Electric Power?

Caterpillar offers a comprehensive variety of electric power systems, customised to fit your needs. Our specialised systems deliver high power and performance in industries across the globe. With Caterpillar, you get outstanding manufacturing quality, expert support, and the essential tools and applications to complete any project.

Learn More About Electric Power

EMCP 4 Generator Set Controls

Cat generator sets provide a complete factory-built solution with fully featured standard and advanced controls. Optional accessories enhance the capabilities of the genset package-mounted control system.

Learn More

Application Center

Explore valuable resources for generator sizing, specification, and training materials. SpecSizer evaluates load types, collects data, and organises it to help you select the generator set that's best for you. Find product comparisons, technical data, product sizing, and more using our technical information portal (TIP) specifically created for consultants, architects, engineers, and owners.

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