G3516 1500 kW

Gas Generator Sets G3516 with FAST RESPONSE

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Key Specs

Gas Standby Rating
1500 ekW @ 0.8pf
1500 ekW @ 0.8pf
Fuel Type
Natural Gas
Natural Gas
Emissions/Fuel Strategy
U.S. EPA Stationary Non-Emergency Certified
U.S. EPA Stationary Non-Emergency Certified


1000 - 1500 kW Natural Gas Generator

Caterpillar is leading the power generation marketplace with Fast Response generator sets engineered to deliver unmatched performance, reliability, and cost-effectiveness.


Meets UL2200 Certification

Leading edge EPA Certification For Non-Emergency, UL2200, UL1446, and more

Ready in 7.0 Seconds

Complies with industry leading specifications such as NFPA 110 Level 1 Type 10

Ready to accept 100% Block Load

Able to pick up the loads for the entire site in the event of an emergency.

Product Specifications for G3516 with FAST RESPONSE

Gas Standby Rating 1500 ekW @ 0.8pf 1500 ekW @ 0.8pf
Fuel Type Natural Gas Natural Gas
Emissions/Fuel Strategy U.S. EPA Stationary Non-Emergency Certified U.S. EPA Stationary Non-Emergency Certified
RPM 1800 rpm 1800 rpm
Frequency 60 Hz 60 Hz
Compression Ratio 11.5 11.5
Engine Model G3516 G3516
Displacement 4765 in³ 78 l
Aspiration TA TA
Bore 6.7 in 170 mm
Stroke 8.5 in 215 mm
Length 275.6 in 7000 mm
Width 92.3 in 2345 mm
Height 128.5 in 3265 mm
Weight 40384 lb 18315 kg

G3516 with FAST RESPONSE Standard Equipment

Air Inlet

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

Control Panel

  • EMCP 4.3


  • Jacket water and SCAC engine-driven pumps
  • Jacket water and SCAC thermostats


  • Dry exhaust manifolds, insulated and shielded
  • Individual exhaust port and turbocharger outlet wired to integrated temperature sensing module (ITSM) with GCEM providing alarms and shutdowns
  • 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
  • Gas pressure regulator
  • 24V DC energized-to-run (ETR) gas shutoff valve
  • Engine-installed electronic control valve


  • Crankshaft vibration damper and guard
  • Paint- Caterpillar Yellow with high gloss black rails and radiator
  • RH Service
  • Operation and maintenance manuals
  • Parts book


  • Permanent Magnet Excitiation
  • Anti-condensation space heater
  • Winding temperature detectors
  • NEMA Class H insulation
  • Integrated voltage regulator (IVR)
  • SR5


  • Electric Starter
  • 24V starting motors
  • Jacket water heater
  • Battery with cables and rack (shipped loose)

Governing System

  • ADEM A4

Ignition System

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

G3516 with FAST RESPONSE Optional Equipment

Air Inlet

  • Air cleaner with precleaner

Control Panel

  • Remote annunciator
  • Local alarm module
  • Remote PC monitoring
  • Engine failure relay
  • Local PC monitoring
  • EMCP 4.4

Circuit Breakers

  • S LSI, G LSIG, P LSIG-P, 4th Digit Type
  • 100% rated, 3-pole (UL/CSA/IEC) 5th Digit Rating
  • 3-pole (IEC 947-2 rated)
  • 2000A, 2500A, 3000A 3 Pole, UL-100% Rated Masterpact Circuit Breakers
  • 1600A, 2000A 3 Pole, UL-100% Rated R-Frame Circuit Breakers
  • Frame mounting


  • Coolant level drain line with valves, fan with guard
  • Package mounted radiator


  • 305 mm (12 in.) muffler
  • 305 mm (12 in.) flange
  • 305mm (12 in) spark arresting muffler
  • 305 mm (12in.) elbow
  • 18, 25 dBA Attenuation

Fuel System

  • 3, 0-100 kPag, 4-20mA gas train pressure sensors


  • Digital diagnostic tool


  • European bus bars
  • Bearing temperature detectors
  • Low voltage extension box
  • Generator air filter
  • Cable access box


  • 45A, 24V charging alternator (requires engine driven pumps)
  • 20A, 24VDC battery charger

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