Features
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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 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
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SR5 Generator
- Designed to match performance and output characteristics of Caterpillar gas engines
- Industry leading mechanical and electrical design
- High efficiency
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Cat ECS 100 Control Panel
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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
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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
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Proven System
- Field proven in a wide range of applications worldwide
- Fully prototype tested
- Certified torsional vibration analysis available
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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
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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
Specifications
Units for specifications
Generator Set Specifications
| Gas Standby Rating | 750 ekW @ 0.8pf |
|---|---|
| Fuel Type | Natural Gas, Hydrogen Blend (up to 5%) |
| Emissions/Fuel Strategy | U.S. EPA Certified for Non-Emergency Stationary Genset |
| RPM | 1800 rpm |
| Frequency | 60 Hz |
| Displacement | 3173 in³ 52 l |
Engine Specifications
| Engine Model | G3512 |
|---|---|
| Displacement | 3173 in³ 52 l |
| Aspiration | TA |
| Bore | 6.7 in 170 mm |
| Stroke | 7.5 in 190 mm |
| Governor Type | ADEM A4 |
Generator Set Dimensions
| Length | 205.7 in 5224 mm |
|---|---|
| Width | 90 in 2286 mm |
| Height | 99.4 in 2525 mm |
| Weight | 27500 lb 12500 kg |
Standard Equipment
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
Optional Equipment
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
Videos
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Cat ECS Control Panels
