3516C (60 Hz)

3516C Generator Set

Producing reliable power from 1825 to 2500 ekW at 60 Hz, our 3516C diesel generator sets are made to meet your mission critical, standby and prime applications. We’ve designed each to ISO 8528-5 transient response requirements and to accept 100% rated load in one step. The 3516C generator sets are U.S. EPA Certified for Stationary Emergency Use Only (Tier 2 Nonroad Equivalent Emission Standards), Low Fuel Consumption certified.

Cat Generator Set Package

  • Cat generator set packages have been fully prototype tested
  • Accepts 100% block load in one step and meets NFPA 110 loading requirements
  • Conform to ISO 8528-5 steady state and transient response requirements

Cat Diesel Engine

  • Reliable, rugged, durable design
  • Field-proven in thousands of applications worldwide
  • Four-stroke-cycle diesel engine combines consistent performance and excellent fuel economy with minimum weight

SR5 Alternator

  • Superior motor starting capability minimizes need for oversizing alternator
  • Designed to match performance and output characteristics of Cat diesel engines
  • Robust Class H insulation

Cat ECS 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

Cooling System

  • Designed to operate in standard ambient temperatures up to 50�C (122�F)
  • Contact your Cat Dealer for specific ambient and altitude capabilities


  • UL 2200 Listed
  • CSA
  • IBC seismic certification
  • OSHPD pre-approval

One Safe Source

  • Components used in the generator set are selected at the design stage to provide optimum package performance
  • The generator set is fully assembled at a Caterpillar facility following our quality guidelines
  • Each generator set package is tested before leaving the Caterpillar facility
  • Cat product support, including dealer service, parts and warranty covers the entire Cat power system

World Wide 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

Standard Equipment

Air Inlet System
  • Air cleaner; single element canister type
  • Package mounted radiator
  • Exhaust flange outlet
Control Panels
  • Communications:
  • Reverse reactive power (kVAr) (32RV)
  • Customer data link (Modbus RTU)
  • Generator mounted - rear facing
  • 1 Programmable digital outputs
  • Auto/start/stop control -
  • Serial annunciator module data link
  • Engine cool-down timer
  • 24 Volt DC operation
  • Controls:
  • Generator set packages include Caterpillar's voltage
    regulator (IVR). IVR includes reactive droop capability, 3-phase voltage sensing,
    KVAR / PF modes, RFI suppression, min / max exciter.
    Limiter and exciter diode monitor
  • Alarm acknowledge
  • Cat connect
  • Engine cycle crank
  • Text alarm/event descriptions
  • Overcurrent (50 / 51)
  • Accessory module data link
  • Cat ECS 100
  • 1 Programmable relay outputs (Form C)
  • Emergency stop pushbutton
  • Speed adjust
  • 4 Programmable relay outputs (Form A)
  • Number of I/O varies on options selected
  • 6 Customer programmable digital inputs
  • Environmental sealed front face
  • Load histogram feature
  • Lamp test
  • PLC functionality
  • Customizable screens -0 True RMS AC metering, 3-phase, +/-2% accuracy
  • Digital indication for:
  • Operating hours
  • RPM
  • DC volts
  • Frequency (Hz)
  • Coolant temperature
  • Volts (L-L & L-N)
  • Oil pressure (psi, kPa or bar)
  • Amps (per phase & average)
  • kVAr (per phase, average & percent)
  • kVA (per phase, average & percent)
  • kW (per phase, average & percent)
  • Power factor (per phase & average)
  • kW-hr (total)
  • kVAr-hr (total)
  • High coolant temperature
  • Overspeed
  • Failure to start (overcrank)
  • Warning/shutdown with common LED indication of shutdowns for:
  • Emergency stop
  • Low oil pressure
  • Low coolant level
  • Low coolant temperature
  • Programmable protective relaying functions:
  • Over/under frequency (81 o/u)
  • Generator phase sequence
  • Over/under voltage (27 / 59)
  • Reverse power (kW) (32)
  • Primary fuel filter with integral water separator
  • Matched to the performance and output characteristics of Cat engines
  • IP23 Protection
Power Termination
  • Busbar
Control Panel
  • Cat ECS Genset controller
Cooling System
  • Certified standard PGS provided
Exhaust System
  • Flanged faced outlet(s)
  • Dry exhaust manifold
Fuel System
  • Flexible fuel lines - shipped loose
  • Fuel cooler; not included with packages without radiator
  • Secondary fuel filters
  • Fuel priming pump
  • Caterpillar yellow with high gloss black rails and radiator
  • Right hand servicing
  • Flywheel and flywheel housing - SAE No. 00
  • Paint - Caterpillar yellow except rails and radiators gloss black
  • SAE standard rotation
Generator and Attachments
  • Busbar connections, top center mounted, top cable entry
  • Class H temperature rise at 40C ambient (125C prime / 150C standby)
  • Low voltage:
  • NEMA standard hole pattern
  • Medium voltage:
  • Anti-condensation space heater
  • 6 Lead
  • Random wound
  • Form wound
  • NEMA Class H insulation system, Class H temperature rise at 40C ambient (125C prime / 150C standby)
  • Permanent magnet excitation (PMG)
  • Class H insulation, Class F temperature rise at 40C ambient (105C prime/130C standby)
  • Internal excitation (IE)
  • 3 Phase brushless, Salient pole
  • High voltage:
  • Winding temperature detectors
  • Busbar connections, right side extension box, bottom cable entry
Governing System
  • ADEM A3
  • Parts book
Lubrication System
  • Lubricating oil
  • Fumes disposal
  • Integral lube oil cool
  • Oil drain lines and valve
  • Oil filter, filler and dipstick
  • Gear type lube oil pump
Mounting System
  • Anti-vibration mounts (shipped loose)
  • Rubber anti-vibration mounts - shipped loose
  • Rails - engine/generator/radiator mounting
Starting System
  • Battery disconnect switch
  • 45 Amp Charging alternator
  • 24 Volt electric starting motor
  • Battery and battery rack w/cables
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