Gas Generator Sets G3512H

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Key Specs

Continuous Rating: 1515 ekW / 1505 ekW @1.0pf; 1515 ekW / 1505 ekW @1.0pf

Fuel Type: Natural Gas, Hydrogen Blend (up to 25%); Natural Gas, Hydrogen Blend (up to 25%)

Maximum Electrical Efficiency: 44.90%; 44.90%

G3512H
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Overview

1061 - 1515 kW Gas Generator

From natural gas to biogas, coal mine gases, or hydrogen fuel blends to support combined heat and power (CHP), emergency power, and local grid support applications, Caterpillar has a wide range of reliable gas power solutions.

Benefits

Up to 25% hydrogen blended fuel option

Enables operation of up to 25% hydrogen blend (by volume) with pipeline natural gas fuel.

Up to 15% savings on service

Extended maintenance intervals leading to lower service costs

Up to 20% lower lube oil consumption

Leading to lower service costs and extended maintenance intervals

Features At A Glance

Robust high speed block design provides prolonged life and lower owning operationg costs
Designed for maximum performance on low pressure pipeline natural gas and hydrogen mixtures
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

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

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

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

Field proven in a wide range of applications worldwide
Fully prototype tested
Certified torsional vibration analysis available

Wide range of bolt-on system expansion attachments
Factory designed and tested
Flexible packaging options for easy and cost effective installation

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

Specifications Standard Equipment Optional Equipment

Product Specifications for G3512H

Generator Set Specifications

Continuous Rating	1515 ekW / 1505 ekW @1.0pf 1515 ekW / 1505 ekW @1.0pf
Fuel Type	Natural Gas, Hydrogen Blend (up to 25%) Natural Gas, Hydrogen Blend (up to 25%)
Maximum Electrical Efficiency	44.90% 44.90%
Frequency	50 / 60 Hz 50 / 60 Hz
RPM	1500 rpm 1500 rpm

Engine Specifications

Engine Model	G3512H G3512H
Displacement	3574 in³ 59 l
Aspiration	TA TA
Bore	6.7 in 170 mm
Stroke	8.5 in 215 mm
Governor Type	ADEM A4 ADEM A4

Generator Set Dimensions

Length	223 in 5656 mm
Width	76 in 1921 mm
Height	91 in 2308 mm
Dry Weight - Genset	31085 lb 14100 kg

G3512H Standard Equipment

Air Inlet

Package Mounted Air Cleaner with service indicator

Cooling

Jacket water and SCAC thermostats

2nd Stage CAT Flange

ANSI Class 150 JW Connection

Engine driven pumps for jacket water and aftercooler cooling

Control Panels

Dedicated customer wiring terminals

Control Panel

EMCP4.3

Exhaust

Dry exhaust manifolds insulated and shielded

Center section cooled turbocharger with Cat flanged outlet

Generator

High efficiency low voltage Cat generator, permanent magnet excitation, digital regulation, IP23 water ingress protection, & form wound construction.

Starting/Charging

Electric Starter

General

Paint - Caterpillar Yellow except rails and radiators gloss black

Crankshaft vibration damper and guard

G3512H Optional Equipment

Air Inlet

Mounting brackets and piping

Air cleaner with precleaner

Control Panels

Remote annunciator

Circuit Breakers

Frame mounting circuit breaker orientation

2500A 3-pole IEC rated circuit breakers

Rear Mounted Circuit Breaker

3000A/3200A/4000A UL100% Rated Masterpact circuit breaker (60 Hz only)

LSI Long-Time, LSI-P Long-Time, LSIG Long-Time, LSIG-P Long-Time,

Control Panel

Language Options

Cable Shroud Location

Engine failure relay

Discrete I/O module, 12 digital points, 8 'Form C' relay

16 point/32 light annunciator with NFPA99-110/CSA282 configuration

Empty Upper Box Right/Left

Local Alarm module

Synchronization module

Cat Connect: Ethernet, satellite, or cell telematics

Local/Remote PC Monitorring

Right/Left/Rear Extension Box

Cooling

Remote radiator for JW and SCAC circuits

220V (50Hz), 240V (60Hz), 480V (60Hz) JW heater

Exhaust

Flexible fitting [305mm x 305mm (12in. X 12in.)] w/ 12 bolt-flanges

406mm (16in.) sparking-arresting muffler with companion flange

Exhaust expander [250mm-329mm (10in-12in)]

305mm (12 in.) flange

Muffler options

Elbow exhaust

Fuel System

1/2" NPT gas train conduit connectors

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

Fuel Filter

Gas knockdown regulators

General

Digital Diagnostic tool

US Aid emblem

Generator

Generator air filter

Manual voltage control

Cable access box

RTD Monitorring

Bearing temperature detectors

Governing System

ADEM A4 4-20mA (0-5V) speed input

Starting/Charging

Battery with cables and rack

24V Starting motors

20A, 24VDC battery charger

45A, 24V charging alternator (requires engine driven pumps)

Jacket water heater

Grid Code Compliance

60 Hz: USA

50 Hz: Germany, Great Britain, Belgium, Romania, Italy, Ireland, Poland, Netherlands, Spain, France, and European Standard

Product Specifications for G3512H

Download Print

Generator Set Specifications

Continuous Rating	1515 ekW / 1505 ekW @1.0pf 1515 ekW / 1505 ekW @1.0pf
Fuel Type	Natural Gas, Hydrogen Blend (up to 25%) Natural Gas, Hydrogen Blend (up to 25%)
Maximum Electrical Efficiency	44.90% 44.90%
Frequency	50 / 60 Hz 50 / 60 Hz
RPM	1500 rpm 1500 rpm

Engine Specifications

Engine Model	G3512H G3512H
Displacement	3574 in³ 59 l
Aspiration	TA TA
Bore	6.7 in 170 mm
Stroke	8.5 in 215 mm
Governor Type	ADEM A4 ADEM A4

Generator Set Dimensions

Length	223 in 5656 mm
Width	76 in 1921 mm
Height	91 in 2308 mm
Dry Weight - Genset	31085 lb 14100 kg

G3512H Standard Equipment

Air Inlet

Package Mounted Air Cleaner with service indicator

Cooling

Jacket water and SCAC thermostats

2nd Stage CAT Flange

ANSI Class 150 JW Connection

Engine driven pumps for jacket water and aftercooler cooling

Control Panels

Dedicated customer wiring terminals

Control Panel

EMCP4.3

Exhaust

Dry exhaust manifolds insulated and shielded

Center section cooled turbocharger with Cat flanged outlet

Generator

High efficiency low voltage Cat generator, permanent magnet excitation, digital regulation, IP23 water ingress protection, & form wound construction.

Starting/Charging

Electric Starter

General

Paint - Caterpillar Yellow except rails and radiators gloss black

Crankshaft vibration damper and guard

G3512H Optional Equipment

Air Inlet

Mounting brackets and piping

Air cleaner with precleaner

Control Panels

Remote annunciator

Circuit Breakers

Frame mounting circuit breaker orientation

2500A 3-pole IEC rated circuit breakers

Rear Mounted Circuit Breaker

3000A/3200A/4000A UL100% Rated Masterpact circuit breaker (60 Hz only)

LSI Long-Time, LSI-P Long-Time, LSIG Long-Time, LSIG-P Long-Time,

Control Panel

Language Options

Cable Shroud Location

Engine failure relay

Discrete I/O module, 12 digital points, 8 'Form C' relay

16 point/32 light annunciator with NFPA99-110/CSA282 configuration

Empty Upper Box Right/Left

Local Alarm module

Synchronization module

Cat Connect: Ethernet, satellite, or cell telematics

Local/Remote PC Monitorring

Right/Left/Rear Extension Box

Cooling

Remote radiator for JW and SCAC circuits

220V (50Hz), 240V (60Hz), 480V (60Hz) JW heater

Exhaust

Flexible fitting [305mm x 305mm (12in. X 12in.)] w/ 12 bolt-flanges

406mm (16in.) sparking-arresting muffler with companion flange

Exhaust expander [250mm-329mm (10in-12in)]

305mm (12 in.) flange

Muffler options

Elbow exhaust

Fuel System

1/2" NPT gas train conduit connectors

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

Fuel Filter

Gas knockdown regulators

General

Digital Diagnostic tool

US Aid emblem

Generator

Generator air filter

Manual voltage control

Cable access box

RTD Monitorring

Bearing temperature detectors

Governing System

ADEM A4 4-20mA (0-5V) speed input

Starting/Charging

Battery with cables and rack

24V Starting motors

20A, 24VDC battery charger

45A, 24V charging alternator (requires engine driven pumps)

Jacket water heater

Grid Code Compliance

60 Hz: USA

50 Hz: Germany, Great Britain, Belgium, Romania, Italy, Ireland, Poland, Netherlands, Spain, France, and European Standard

Product Brochures and More Are Ready to Download!

Caterpillar product brochures and other informational documents are available for your growing business.

See how G3512H compares against frequently compared products.

Electric Power

Selected

G3512H

Continuous Rating: 1515 ekW / 1505 ekW @1.0pf; 1515 ekW / 1505 ekW @1.0pf
Fuel Type: Natural Gas, Hydrogen Blend (up to 25%); Natural Gas, Hydrogen Blend (up to 25%)
Maximum Electrical Efficiency: 44.90%; 44.90%

Electric Power

G3512 with FAST RESPONSE

Gas Standby Rating: 1000 ekW @ 0.8pf; 1000 ekW @ 0.8pf
Fuel Type: Natural Gas, Hydrogen Blend (up to 5%); Natural Gas, Hydrogen Blend (up to 5%)
Emissions/Fuel Strategy: U.S. EPA Certified for Non-Emergency Stationary Genset; U.S. EPA Certified for Non-Emergency Stationary Genset