G3512 750kW Gas Generator Set

Exterior View

Displacement	3,173 in3
Gas Standby Rating	750kW
Emissions/Fuel Strategy	U.S. EPA Stationary Emergency Certified
Compression Ratio	10
Weight	27,500 lbs
Engine Model	G3512

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Gas Generator Sets Specification

Displacement	3,173 in3
Gas Standby Rating	750kW
Compression Ratio	10

Generator Set Configurations

Emissions/Fuel Strategy

U.S. EPA Stationary Emergency Certified

Generator Set Dimension

Weight

27,500 lbs

Engine Specification

Engine Model

G3512

Generator Set Specifications

Fuel Type	Natural Gas, Hydrogen Blend (up to 5%)
Frequency	60 Hz
RPM	1800 rpm
Gas Standby Rating	750 ekW @ 0.8pf
Displacement	3,173 in³
Emissions/Fuel Strategy	U.S. EPA Certified for Non-Emergency Stationary Genset

Engine Specifications

Bore	7 in
Stroke	8 in
Displacement	3,173 in³
Aspiration	TA
Engine Model	G3512
Governor Type	ADEM A4

Generator Set Dimensions

Length	206 in
Width	90 in
Height	99 in
Weight	27,500 lb

Generator Sets Specifications

Compression Ratio

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 and hydrogen blends
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

Cat ECS 100 Control Panel

Cooling System

Designed to operate in standard ambient temperatures up to 43°C (110°F)
Contact your Cat Dealer for specific ambient and altitude capabilities

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

Worldwide 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

Air Inlet
- Dual air cleaners, 1 per side, with service indicator
- Two-element single-stage air cleaner with enclosure and service indicator
Control Panel
- Cat ECS 100
Cooling
- Engine driven pumps for jacket water and separate circuit aftercooler
- Jacket water and SCAC engine-driven pumps
- Jacket water and SCAC thermostats
- LH or RG connections when radiator is not selected
- Package mounted radiator
Fuel
- NOx sensor based air-fuel-ratio control
- 0.5 to 5 psi engine fuel inlet pressure
- Pipeline Natural Gas: 800-1000 BTU/scf and 70-100 Methane Number
- Gas Train: NFPA37 and CSA B149.3
Exhaust
- Individual exhaust port and turbocharger outlet wired to integrated temperature sensing module (ITSM) with GCEM providing alarms and shutdowns
- Dry exhaust manifolds, insulated and shielded
- Cat-flanged face outlet on turbocharger
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
- Throttle plate, 24V DC actuator, controlled by GECM
- Engine-installed electronic control valve
- Gas pressure regulator
- 24V DC energized-to-run (ETR) gas shutoff valve
General
- Crankshaft vibration damper and guard
- Operation and maintenance manuals
- Parts book
- Paint- Caterpillar Yellow except rails and radiators gloss black
- RH Service
Lubrication
- Gear type lube oil pump
- Cartridge style oil filter
Generator
- Anti-condensation space heater
- Winding temperature detectors
- NEMA Class H insulation
- SR5
- Permanent Magnet Excitiation
- Caterpillar's Digital Voltage Regulator (CDVR) including reactive droop capability, 3-phase voltage sensing, KVAR/PF modes, RFI suppression, and a min/max exciter
Governing System
- ADEM A4
Ignition System
- Individual Cylinder Detonation Sensitive Timing (DST)
- Electronic Ignition System (controlled by ADEM A4)
Governing
- ADEM A4 speed governor with 4 to 20ma (0V to 5V) speed input
Starting/charging
- 24V DC starting motors
- Batteries with rack and cables
- Electric Starter

Air Inlet
- Mounting brackets and piping
- Air cleaner with precleaner
Circuit Breakers
- S LSI, G LSIG, P LSIG-P, 4th Digit Type
- Right, left, rear mounted
- 1200A, 3 Pole, UL-100% Rated P-Frame Circuit Breakers
- 1600A, 2000A 3 Pole, UL-100% Rated R-Frame Circuit Breakers
- 2000A 3 Pole, UL-100% Rated Masterpact Circuit Breakers
- 100% rated, 3-pole (UL/CSA/IEC) 5th Digit Rating
- 3-pole (IEC 947-2 rated)
- Frame mounting
Control Panel
- Remote annunciator
- Local alarm module
- Local PC monitoring
- Engine failure relay
- Remote PC monitoring
Cooling
- Coolant level drain line with valves, fan with guard
- Remote radiator for JW and SCAC circuits, level switch included but not wired
- Inlet/Outlet connections
Exhaust
- 305 mm (12in.) elbow
- 18, 25 dBA Attenuation
- Flexible fittings
- 305 mm (12 in.) muffler
- 305mm (12 in) spark arresting muffler
- 305 mm (12 in.) flange
Fuel System
- 3, 0-100 kPag, 4-20mA gas train pressure sensors
General
- Special paint order
- US AID emblem
- Tool set
- Digital diagnostic tool
Generator
- Cable access box
- Generator air filter
- European bus bars
- Low voltage extension box
- Bearing temperature detectors
Starting/charging
- 20A, 24VDC battery charger
- Battery with cables and rack
- Jacket water heater
- 45A, 24V charging alternator (requires engine driven pumps)
Grid Code Compliance
- 60 Hz: USA