G3520H 2519kW

Gas Generator Sets CHP2500

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Key Specs

Continuous Rating
2480 ekW @ 1.0pf
2480 ekW @ 1.0pf
Fuel Type
Natural Gas
Natural Gas
Maximum Electrical Efficiency


1763 - 2519 kW Gas Generator

The CHP2500 is an enclosure standardized for natural gas-fueled Cat® G3520H engines rated 2.5 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.


Up to 5% owning & operating cost savings

Higher electrical efficiency paired with extended maintenance intervals increases uptime and reduces costs

Up to 84% Package Combined Efficiency

Combined facility soultion simultaneously providing 42.4% electricity efficiency for electrical loads and 42.3% thermal efficiency for heat energy demands.

Overall Length 63 ft Standardized Enclousure

Designed and built for robustness, safety and transportability. Leading to ease of installation and reduce lead time for implementing of CHP projects.

Product Specifications for CHP2500

Continuous Rating 2480 ekW @ 1.0pf 2480 ekW @ 1.0pf
Fuel Type Natural Gas Natural Gas
Maximum Electrical Efficiency 42.40% 42.40%
Frequency 60 Hz 60 Hz
RPM 1500 1500
Frequency 60 Hz 60 Hz
Engine Model G3520H G3520H
Displacement 5956 in³ 97.5 l
Aspiration TA TA
Bore 6.7 in 170 mm
Stroke 8.5 in 215 mm
Fuel System Electronic Fuel Control Valve Electronic Fuel Control Valve
Governor Type ADEM™ A4 ADEM™ A4
Compression Ratio 11.1 11.1
Length 302 in 7668 mm
Width 86 in 2173 mm
Height 97 in 2473 mm
Dry Weight - Genset 54675 lb 25285 kg
Weight 168000 lb 76200 kg

CHP2500 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

  • Three-element single-stage air cleaner with enclosure and service indicator


  • Jacket water and SCAC thermostats
  • ANSI/DN customer flange connections for JW inlet and outlet
  • Engine driven water pumps for jacket water and aftercooler
  • 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


  • Fire detection system

Circuit Breaker

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


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

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

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


  • 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.
  • Caterpillar's Digital Voltage Regulator (CDVR) with 3-phase sensing and KVAR/PF control
  • SR4B
  • Reactive droop
  • Busbar connections
  • RH Service
  • Operation and maintenance manuals
  • SR5
  • Crankshaft Vibration Damper and Guard
  • Parts book
  • Winding temperature detectors
  • Paint- Caterpillar Yellow except rails gloss black
  • Anti-condensation space heater

Govrerning System

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

CHP2500 Optional Equipment

Air Inlet

  • Mounting Brackets and Piping
  • Air cleaner with precleaner

Circuit Breaker

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

Control Panel

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


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


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

Fuel System

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


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


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


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

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