Overview
G3512H Generator Set
Specifications
Units:
| Continuous Rating | 1515 ekW / 1505 ekW @1.0pf |
| Fuel Type | Natural Gas, Hydrogen Blend (up to 25%) |
| Maximum Electrical Efficiency | 44.90% |
Benefits & Features
Cat G3512H 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 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
SR5 Generator
- Designed to match performance and output characteristics of Caterpillar gas engines
- Industry leading mechanical and electrical design
- High efficiency
EMCP 4.3 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
October 21, 2025
Specifications
Units:
| Continuous Rating | 1515 ekW / 1505 ekW @1.0pf |
| Fuel Type | Natural Gas, Hydrogen Blend (up to 25%) |
| Maximum Electrical Efficiency | 44.90% |
| Frequency | 50 / 60 Hz |
| RPM | 1500 rpm |
| Engine Model | G3512H |
| Displacement | — |
| Aspiration | TA |
| Bore | — |
| Stroke | — |
| Governor Type | ADEM A4 |
| Length | — |
| Width | — |
| Height | — |
| Dry Weight - Genset | — |
Benefits & Features
Cat G3512H 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 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
SR5 Generator
- Designed to match performance and output characteristics of Caterpillar gas engines
- Industry leading mechanical and electrical design
- High efficiency
EMCP 4.3 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
Emissions
- 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
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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
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