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Cat G3516H Combined Heat and Power (CHP) Solution

Continuous Rating

1982 ekW @ 1.0pf

Fuel Type

Natural Gas

Maximum Electrical Efficiency



The CHP2000 is an enclosure standardized for natural gas-fueled Cat® G3516H engines rated 2.0 MW, with generator rated for 4160V for combined heat and power (CHP) applications. In CHP applications, Cat gas generator sets simultaneously provide electricity for electrical loads and heat energy for a facility’s thermal requirements. Caterpillar will offer customers complete CHP solutions eliminating the need to outsource additional engineering or project management.



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  • Generator Set Specifications
    Spec Value
    Continuous Rating 1982 ekW @ 1.0pf
    Fuel Type Natural Gas
    Maximum Electrical Efficiency 42.90%
    Frequency 60 Hz
    RPM 1500
    Frequency 60 Hz
  • Engine Specifications
    Spec Value
    Engine Model G3516H
    Displacement 4765 in³
    Aspiration TA
    Bore 6.7 in
    Stroke 8.5 in
    Fuel System Electronic Fuel Control Valve
    Governor Type ADEM™ A4
    Compression Ratio 11.1
  • Generator Set Dimensions
    Spec Value
    Length 716 in
    Width 155 in
    Height 467 in
    Dry Weight - Genset 40384 lb
    Weight 166600 lb

Standard Equipment


  • G3520H, V20, 4-stroke-cycle, gas engine. Operates on 31.5 to 47.2 MJ/NM3 dry pipeline natural gas. Turbocharged Separate Circuit Aftercooled.

Control Panel

  • On Package EMCP 4.3 Control Panel System Offers engine and generator monitoringand protection, voltage regulation with Cat IVRimproves transient response performance. Controls provide auto paralleling AGC-4 controller, load sharing, VFDcontrol, and primary generator protection for greaterversatility, package utilization and monitoring.

Air Inlet

  • Package Mounted Air Cleaner with service indicator


  • ANSI/DN customer flange connections for JW inlet and outlet
  • Engine driven water pumps for jacket water and aftercooler
  • Jacket water and SCAC thermostats
  • Standard cooling provides 40⁰C (104⁰F) ambient capability with 500mg/Nm3 NOx at 100% Continuous rating before derate, @ 500m

Containerized Module

  • NSPS Factory Compilant, UL2200 Compilant and CSA / TSSA Sound attenuated 75 dB(A) @ 7 m (23 ft) Sound attenuated air intake louvers and lockable personnel doors with panic release LH and RH engine service doors integrated intocontainer side walls 3” ANSI flange customer fuel connection

Generator Controls And Protection

  • Integrated crankcase ventilation system (CCV)and gas fuel train NFPA37 & CSAB149.3 with external fuel connections package utilization and monitoring.

Modes of Operation

  • Provides for single unit stand-alone operation,island mode paralleling and load sharing withother power modules, and single unit-to-utilitymode paralleling for base load control

Lube Oil Make-Up System

  • Integrated enclousre holding tanks: Oil makeup tank (50 gallon), Waste oil tank (300 gal / 2 oil changes), Fresh oil tank (500 gal / 2 oil changes + makeup) and oil level regulator. Low level annunciation


  • Externally mounted exhaust system (muffler and heat exchanger)
  • Dry exhaust manifolds, insulated and shielded
  • Individual exhaust port and turbocharger outlet wired to Integrated Tmeperature Sensing Module (ITSM) with GECM providing alarms and shutdowns
  • Center section cooled turbocharger with Cat flanged outlet


  • Fire detection system

Circuit Breaker

  • LSI Long-Time, Short-Time, Instantaneous Annunciator
  • 5000A 3-Pole IEC Rated Circuit Breakers
  • Rear-mounted

Fuel System

  • Electronic fuel metering valve
  • Throttle plate, 24V DC actuator, controlled by GECM

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

Ignition System

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


  • Double bearing SR5 1866 frame, brushless, form wound, 12-lead design, permanent magnet excited, three-phase, with Cat IVR, Class H insulation operating at Class F temperature. Stator and Bearing temperature monitoring and anti-condensation space heaters.
  • SR4B
  • Caterpillar's Digital Voltage Regulator (CDVR) with 3-phase sensing and KVAR/PF control
  • Paint- Caterpillar Yellow except rails gloss black
  • Busbar connections
  • Crankshaft Vibration Damper and Guard
  • Parts book
  • Reactive droop
  • SR5
  • Anti-condensation space heater
  • RH Service
  • Operation and maintenance manuals
  • Winding temperature detectors

Govrerning System

  • ADEM A4 4-20mA (0-5VV) Speed Input

Optional Equipment

Air Inlet

  • Mounting Brackets and Piping
  • Air cleaner with precleaner

Circuit Breaker

  • Frame Mounting
  • MP- Frame 6 Pole Bottom Cable Entry
  • No UV trip or package mounted CB Wiring
  • 4000/5000A Neutral Current Transformer Automatic Selection

Control Panel

  • Local alarm module
  • Engine failure relay
  • Remote PC Monitorring
  • Remote Communications Module (PL1000T, PL1000E)
  • Synchronizing module
  • Local PC Monitorring
  • Remote annuciator
  • 16 Point/32 Light Annunciator, Shipped Loose
  • Discrete I/O Module, 12 Digital Inputs, 8 'Form C' Relay
  • Cat Connect: Ehternet, Satellite, Cell Telematics


  • Coolant level drain line with valves, fan with guard
  • Inlet/Outlet connections


  • Elbow
  • Muffler and spark-arresting muffler with companion flanges
  • Exhaust Expander
  • Flexible Fitting
  • Flange
  • Oxidation catalyst

Fuel System

  • Gas pressure regulator
  • Gas shutoff valve 24V, ETR (Energized-To-Run)
  • Gas Knockdown Regulator
  • Fuel filter


  • Manual voltage control
  • Generator air filter
  • Cable access box
  • Medium and high voltage generators and attachment
  • European bus bar
  • Low voltage extension box
  • Bearing temperature detectors


  • Jacket water heater
  • Battery with cables and rack (shipped loose)
  • 24V starting motors
  • 60A, 24V charging alternator (requires engine driven pumps)


  • Tool set
  • Digital diagnostic tool
  • US AID Emblem
  • Special paint order
  • Cold-weather bundle including enclosure heaters and ventilation recirculation
  • Fire suppression system
  • Interior DC lighting system with automatic shutoff timer