Diesel Generator Sets 3512B (60 Hz) with Upgradeable Package 1230 - 1500 ekW Diesel Generator Set

3512B (60 Hz) with Upgradeable Package

Features At A Glance

Cat Generator Set Package
Cat Diesel Engine
SR5 Alternator
EMCP 4 Control Panel
Cooling System
One Safe Source
World Wide Product Support

Product Specifications for 3512B (60 Hz) with Upgradeable Package

Generator Set Specifications

Engine Specifications

Generator Set Dimensions

3512B (60 Hz) with Upgradeable Package Standard Equipment

Air Inlet System

  • Air cleaner; single element canister type with service indicator

Control System

  • True RMS AC metering, 3-phase, +/-2% accuracy

Control Panel

  • DC volts
  • 24-volt DC operation
  • kVA (per phase, average & percent)
  • Engine cool-down timer
  • Coolant temperature
  • kW-hr (total)
  • Amps (per phase & average)
  • Over / under frequency (81 o/u)
  • Text alarm / event descriptions
  • Accessory module data link
  • Alarm acknowledge
  • Warning / shutdown with common LED indication of shutdowns for:
  • Auto / start / stop control
  • Controls:
  • Failure to start (overcrank)
  • Generator mounted - rear facing
  • kVAr (per phase, average & percent)
  • kVAr-hr (total)
  • Reverse reactive power (kVAr) (32RV)
  • Volts (L-L & L-N)
  • Serial annunciator module data link
  • 4 programmable relay outputs (Form A)
  • Lamp test
  • Operating hours
  • Overcurrent (50/51)
  • kW (per phase, average & percent)
  • Communications:
  • 6 programmable digital inputs
  • RPM
  • Engine cycle crank
  • 2 programmable relay outputs (Form C)
  • IVR includes reactive droop capability, 3-phase voltage sensing
  • High coolant temperature
  • Digital indication for:
  • Environmental sealed front face
  • Power Factor (per phase & average)
  • Speed adjust
  • Emergency stop pushbutton
  • Limiter and exciter diode monitor
  • Low oil pressure
  • EMCP 4.2B
  • Low coolant level
  • 2 programmable digital outputs
  • KVAR/PF modes, RFI suppression, min/max exciter
  • Oil pressure (psi, kPa or bar)
  • Customer data link (Modbus RTU)
  • True RMS AC metering, 3-phase, +/-2% accuracy
  • Overspeed
  • Frequency (Hz)
  • Emergency stop
  • Generator set packages include Caterpillar's Voltage Regulator (IVR).
  • Reverse power (kW) (32)
  • Low coolant temperature
  • Generator phase sequence
  • Programmable protective relaying functions:
  • Over / under voltage (27/59)

Cooling System

  • Caterpillar extended life coolant. (Not included with packages without radiator, installed SF44CTS, shipped loose radiators or heat exchangers)
  • Fan and belt guards.
  • JWAC
  • Coolant drain line with valve
  • Coolant level sensors. (Not included with packages without radiator)


  • Dry Exhaust Manifold
  • Flanged faced outlet(s)

Fuel System

  • Fuel cooler; not included with packages without radiator
  • Fuel priming pump
  • Secondary fuel filters
  • Flexible fuel lines - shipped loose

Generators and Attachments

  • NEMA Class H insulation
  • Winding temperature detectors
  • Internal excitation or permanent magnet
  • LV:
  • 6 Lead
  • 60 Hz models: NEMA standard hole pattern
  • Class H temperature rise at 40C ambient (125C prime / 150C standby)
  • 3 Phase brushless, salient pole
  • Busbar connections, top center mounted, top cable entry
  • Random wound

Governing System

  • Woodward 2301A isochronous governor

Lube System

  • Oil drain lines and valve
  • Lubricating oil
  • Integral lube oil cooler
  • Fumes disposal
  • Gear type lube oil pump
  • Oil filter, filler and dipstick

Mounting System

  • Rails - engine/generator/radiator mounting
  • Rubber anti-vibration mounts (shipped loose)

Starting / Charging System

  • Battery disconnect switch
  • Battery and battery rack w/cables
  • 24-volt electric starting motor
  • 50 Amp charging alternator


  • SAE Standard Rotation
  • Paint - Caterpillar yellow with high gloss black rails & radiator
  • Flywheel and Flywheel housing-SAE No. 00
  • RH Service

3512B (60 Hz) with Upgradeable Package Optional Equipment

Air Inlet System

  • Air Cleaner: Includes installed single element Cat filter and service indicator
  • Duel element air filters
  • Single stage air cleaners

Control Panels

  • Cat connect (must choose one)
  • RTD module - may select one
  • Modbus monitoring of packages
  • First local annunicator
  • EMCP 4.3, EMCP 4.4
  • CAN 2 network equipment
  • Remote custom annunciator
  • Locale discrete I / O package
  • Vandle proof panel door

Cooling System

  • Optional radiator arrangements
  • Water level gauge
  • Coolant

Control System

  • Generator yemperature monitoring

Exhaust System

  • Exhaust Y adapters
  • Exhaust Elbows
  • Mufflers
  • Flexible fittings
  • Exhaust flange and expanders

Generators and Attachments

  • Space heater control
  • Generator conversion
  • Space heater


  • Pyrometer and thermocouples

Lube System

  • Oil level regulator
  • Prelube manual sump pump
  • Electric prelube sump pump
  • Lube oil

Special Tests / Reports

  • PGS test report @ 0.8 power factor
  • Generator test report
  • Standard generator TVA report
  • PGS test report @ 0.8 power factor
  • Custom generator TVA report
  • Torsional vibration analysis
  • PGS test report @ 1.0 power factor
  • Standard engine test charge
  • Generator test report
  • Standard engine test charge
  • PGS test report @ 1.0 power factor
  • Generator fuel consumption test


  • Barring devices

Crankcase System

  • Ventilation system
  • Protection systems

Batteries and Battery Housing

  • 24 Volt battery set - Dry
  • Battery chargers - 10, 20 and 35 amp

Power Connection System

  • EMCP voltage and current sensing groups
  • Breaker power connections
  • Center post busbar

Circuit Breaker - LV Packages

  • Right hand power connections
  • Electronically operated circuit breakers

Mounting System

  • Low efficiency isolators
  • Spring type vibration isolator
  • Spring type vibration isolator
  • Low efficiency isolators puck

Power Connections

  • Low voltage - Package mounted circuit breakers
  • Low voltage - 1400 and 1600 Frame generators
  • Electrically operated circuit breakers
  • Low voltage - Power connection options

Starting / Charging System

  • Jacket water heater wiring groups
  • 35 Amp battery charger
  • 20 Amp battery charger
  • Jacket water heaters
  • 10 Amp battery charger
  • Electric starting motors
  • Starter covers
  • Batteries, racks and cables

Starting / Charging Systems

  • Electric starting motors
  • Starter covers
  • Jacket water heater

Extended Service Coverage

  • Gold - 36,48, 60, 120 month coverage
  • Cat branded commercial power system
  • Silver - 36 ,48, 60, 120 month coverage
  • Platinum - 24, 36, 48, 60, 120 month coverage

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