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Emissions

Meets most worldwide emissions requirements down to 0.5 g/bhp-hr Nox level without aftertreatment

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 provide extensive post-sale support including maintenance and repair agreements. Cat dealers have over 1,800 dealer branch stores operating in 200 countries. The Caterpillar S•O•S℠„ program cost effectively detects internal engine component condition, even the presence of unwanted fluids and combustion by-products

CAT SR4B or SR5 Generator

Designed to match performance and output characteristics of Caterpillar gas engines. Industry leading mechanical and electrical design. High efficiency

CAT EMCP4.3 Control Panel

The EMCP controller features the reliability and durability you have come to expect from your Cat equipment. EMCP4.3 is a scalable control platform designed to ensure reliable generator set operation, providing extensive information about power output and engine operation. EMCP4.3 systems can be further customized to meet your needs through programming and expansion modules.

Proven System

Field proven in a wide range of apllications worldwide, fully protype tested, and certified torsional vibration analysis available

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

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

G3520C Standard Equipment

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

Control Panel
  • EMCP II+ or EMCP4.3

Cooling
  • Engine driven water pumps for jacket water and aftercooler
  • Jacket water and SCAC driven pumps
  • Jacket water and SCAC thermostat and outlet--ANSI 6 in/DN150
  • 2nd Stage SCAC-Cat Flange
  • ANSI Class 6 in/DN customer flange connections for JW inlet and outlet

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
  • Throttle plate, 24V DC actuator, controlled by GECM
  • 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
  • 24V ETR Gas Shutoff Valve

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

Generator
  • SR4B or SR5
  • 3-phase brushless, salient pole
  • Permanent Magnet Excitiation
  • Caterpillar's Digital Voltage Regulator (CDVR) with 3-phase sensing and KVAR/PF control
  • Class F Insulation & temperature rise
  • Anti-condensation space heater
  • Reactive droop 
  • Winding temperature detectors
  • Bus bar connections

General
  • Crankshaft Vibration Damper and Guard
  • Operation and maintenance manuals
  • RH Service
  • Parts Book

G3520C Optional Equipment

Air Inlet
  • Enclosure Mounting Brackets and Piping
  • Air cleaner with precleaner

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

Cooling
  • Aftercooler air lines, aftercooler core replacement
  • Jacket water coolant heater
  • Engine pumps
  • Inlet/Outlet connections

Exhaust
  • 305/360/406 mm flange kits
  • Exhaust expanders
  • Flexible fittings
  • 305/360/406 mm Elbow Kits
  • Mufflers (15/18/25 dBA Attenuation) and spark-arresting muffler with ANSI companion flanges

Fuel System
  • 14-69 kPa (2-10 psi) gas pressure regulator
  • 207-276kPa, 30-40 psi gas knockdown regulator
  • Fuel filter
  • 24V DC Gas shutoff valve

Generator
  • Low voltage extension box
  • Cable access box
  • Bearing temperature detectors
  • Generator air filter
  • Medium and high voltage generators and attachment
  • 8.7/15 kV Class  Current Transformers (CCCT, DCT, CT)
  • Annunciator Modules
  • 50 Hz--3300/6600 Volt Generator Options
  • 60 Hz--480/4160 Volt Generator Options
  • Generator Removal
  • European Bus Bars

Governing System
  • Load share module

Starting/Charging
  • 24V starting motors
  • Battery with cables and rack (shipped loose)
  • Jacket water heater
  • 60A, 24V charging alternator (requires engine driven pumps)
  • Battery diconnect switch

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 2082 2082 Less

Generator Set Specifications

Fuel Type Natural Gas, Biogas, Coal Gas Natural Gas, Biogas, Coal Gas Less

Generator Sets Specifications

Maximum Electrical Efficiency 40.10% 40.10% Less
Maximum Standby Rating 2000 2000 Less
Frequency 50 / 60 Hz 50 / 60 Hz Less
RPM 1200 / 1500 / 1800 rpm 1200 / 1500 / 1800 rpm Less

Engine Specifications

Engine Model G3520C G3520C Less
Displacement 5270.0 in³ 86.0 l Less
Aspiration TA TA Less
Bore 6.7 in 170.0 mm Less
Stroke 7.5 in 190.0 mm Less
Compression Ratio 11.3 11.3 Less
Fuel System Natural Gas, Biogas, Coal Gas Natural Gas, Biogas, Coal Gas Less

Generator Set Dimensions

Length 249.0 in 6312.0 mm Less
Width 79.0 in 1830.0 mm Less
Height 92.0 in 2340.0 mm Less
Dry Weight - Genset 37959.0 lb 17215.0 kg Less
Weight 17215.0 kg Less

Why Choose Cat® Electric Power?

Caterpillar offers a comprehensive variety of electric power systems, customized to fit your needs. Our specialized 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 organizes 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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