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CAT G3512 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

EMCP4.2 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

Emissions

  • EPA Certified for use in Emergency and Non-Emergency applications
  • Additional a NOx selectable genset is available to 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

Overview

Caterpillar is leading the power generation marketplace with Power Solutions engineered to deliver unmatched flexibility, expandability, reliability, and cost-effectiveness.

Generator Set Specifications

Units:
Gas Standby Rating 1000 ekW @ 0.8pf 1000 ekW @ 0.8pf Less
Fuel Type Natural Gas Natural Gas Less
Emissions/Fuel Strategy U.S. EPA Certified for Non-Emergency Stationary Genset U.S. EPA Certified for Non-Emergency Stationary Genset Less
RPM 1800 rpm 1800 rpm Less
Frequency 60 Hz 60 Hz Less
Compression Ratio 9.7 9.7 Less
Displacement 3173.0 in³ 52.0 B Less

Engine Specifications

Engine Model G3512 G3512 Less
Displacement 3173.0 in³ 52.0 l Less
Aspiration TA TA Less
Bore 6.7 in 170.0 mm Less
Stroke 7.5 in 190.0 mm Less

Generator Set Dimensions

Length 205.7 in 5224.0 mm Less
Width 90.0 in 2286.0 mm Less
Height 99.4 in 2525.0 mm Less
Weight 27500.0 lb 12500.0 kg Less

G3512 1000 ekW Standard Equipment

Air Inlet
  • Two-element single-stage air cleaner with enclosure and service indicator
  • Dual air cleaners, 1 per side, with service indicator

Control Panel
  • EMCP 4.3

Cooling System
  • Engine driven pumps for jacket water and separate circuit aftercooler

Cooling
  • Package mounted radiator
  • Jacket water and SCAC engine-driven pumps
  • Jacket water and SCAC thermostats
  • LH or RG connections when radiator is not selected

Exhaust
  • Dry exhaust manifolds, insulated and shielded
  • Individual exhaust port and turbocharger outlet wired to integrated temperature sensing module (ITSM) with GCEM providing alarms and shutdowns
  • Cat-flanged face outlet on turbocharger

Fuel
  • NOx sensor based air-fuel-ratio control
  • Pipeline Natural Gas: 800-1000 BTU/scf and 70-100 Methane Number
  • Gas Train: NFPA37 and CSA B149.3
  • 0.5 to 5 psi engine fuel inlet pressure

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
  • Engine-installed electronic control valve
  • Throttle plate, 24V DC actuator, controlled by GECM
  • 24V DC energized-to-run (ETR) gas shutoff valve
  • Gas pressure regulator

General
  • Operation and maintenance manuals
  • Paint- Caterpillar Yellow except rails and radiators gloss black 
  • Parts book
  • “Stationary Use Only” Label in Correspondence with EPA Nonroad Mobile SI rule 
  • RH Service
  • Crankshaft vibration damper and guard

Lubrication
  • Cartridge style oil filter
  • Gear type lube oil pump

Starting/Charging
  • Jacket water heater
  • Battery with cables and rack (shipped loose)
  • Electric Starter
  • Batteries with rack and cables
  • 24V DC starting motors

Generator
  • NEMA Class H insulation
  • Permanent Magnet Excitiation
  • SR5
  • Anti-condensation space heater
  • Caterpillar's Digital Voltage Regulator (CDVR) including reactive droop capability, 3-phase voltage sensing, KVAR/PF modes, RFI suppression, and a min/max exciter
  • Winding temperature detectors

Governing System
  • ADEM A4

Ignition System
  • Electronic Ignition System (controlled by ADEM A4) 
  • Individual Cylinder Detonation Sensitive Timing (DST) 

Governing
  • ADEM A4 speed governor with 4 to 20ma (0V to 5V) speed input

G3512 1000 ekW Optional Equipment

Air Inlet
  • Mounting brackets and piping
  • Air cleaner with precleaner

Control Panel
  • Local PC monitoring
  • Engine failure relay
  • Remote PC monitoring
  • Local alarm module
  • Remote annunciator

Cooling
  • Remote radiator for JW and SCAC circuits, level switch included but not wired
  • Inlet/Outlet connections
  • Coolant level drain line with valves, fan with guard

Circuit Breakers
  • 2000A 3 Pole, UL-100% Rated Masterpact Circuit Breakers
  • Frame mounting
  • S LSI, G LSIG, P LSIG-P, 4th Digit Type
  • Right, left, rear mounted
  • 1600A, 2000A 3 Pole, UL-100% Rated R-Frame Circuit Breakers
  • 100% rated, 3-pole (UL/CSA/IEC) 5th Digit Rating
  • EMCP 4.3
  • 3-pole (IEC 947-2 rated)
  • 1200A, 3 Pole, UL-100% Rated P-Frame Circuit Breakers

Exhaust
  • 305 mm (12 in.) flange
  • Flexible fittings
  • 18, 25 dBA Attenuation
  • 305 mm (12 in.) muffler
  • 305mm (12 in) spark arresting muffler
  • 305 mm (12in.) elbow

Fuel System
  • 3, 0-100 kPag, 4-20mA gas train pressure sensors

General
  • US AID emblem
  • Special paint order
  • Digital diagnostic tool
  • Tool set

Generator
  • Generator air filter
  • European bus bars
  • Low voltage extension box
  • Cable access box
  • Bearing temperature detectors

Starting/Charging
  • 20A, 24VDC battery charger
  • 24V starting motors
  • 45A, 24V charging alternator (requires engine driven pumps)

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.

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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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