Diesel Generator Sets 3512B (50 Hz) with Upgradeable Package 1320 - 1750 kVA Diesel Generator Set

3512B (50 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 (50 Hz) with Upgradeable Package

Generator Set Specifications

Engine Specifications

Generator Set Dimensions

3512B (50 Hz) with Upgradeable Package Standard Equipment

Control System

  • Warnings / Shutdown indicators
  • Emergency stop pushbutton
  • 24 Volt DC operation
  • Digital indication for:
  • Lamp test
  • Emergency stop
  • Auto / start / stop control
  • Overspeed
  • Low oil pressure
  • Engine cycle crank
  • Low coolant level
  • Frequency (Hz)
  • 4 Programmable digital inputs
  • Operating hours
  • True RMS AC metering, 3-phase, +/-2% accuracy
  • Communications
  • Oil pressure
  • Speed adjust
  • DC volts
  • High coolant temperature
  • Coolant temperature
  • Amps (per phase & average)
  • Engine cool-down timer.
  • RPM
  • EMCP 4.2B
  • Failure to start (overcrank)
  • Volts (L-L & L-N)
  • 4 Programmable digital outputs
  • Alarm acknowledge

Governing System


Cooling System

  • Coolant level sensors
  • SCAC
  • Radiator fan and fan drive
  • Caterpillar extended life coolant
  • Coolant drain line with valve
  • Fan and belt guards

Exhaust System

  • Flanged faced outlet(s)
  • Dry Exhaust Manifold

Fuel System

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

Generator System

  • Min / max exciter
  • Caterpillar's Digital Voltage Regulator (CDVR)
  • Class H temperature rise at 40C ambient
  • Bus bar connections
  • Winding temperature detectors
  • RFI suppression
  • 3 Phase voltage sensing
  • Internal Excitation
  • Random wound
  • 3 phase brushless, salient pole
  • 6 Leads
  • NEMA Class H insulation


  • English

Lube System

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

Mounting System

  • Rails - engine / generator / radiator mounting


  • RH Service
  • Flywheel and Flywheel housing-SAE
  • Caterpillar yellow with high gloss black rails & radiator
  • SAE standard rotation

3512B (50 Hz) with Upgradeable Package Optional Equipment

Air Inlet System

  • Heavy duty air cleaner
  • Dual element air cleaner
  • Single element filter


  • Exhaust mufflers


  • Internal excitation (IE)
  • Oversize and premium generators
  • Permanent magnet excitation (PMG)
  • Anti-condensation heater

Control System

  • Generator yemperature monitoring
  • Neutral to ground connection
  • Local annunciator modules (Low voltage)
  • EMCP 4.3, EMCP 4.4
  • Cat Connect: Ethernet telematics / Satellite telematics / Cell telematics
  • Annunciator modules (Local and remote)
  • Load share module options (LV)
  • CAN2 network equipment
  • Governors (MUI-low voltage)
  • Customer interface options
  • Annunciator network equipment
  • Remote annunciator modules (Low voltage)
  • EMCP voltage and current sensing groups

Power Termination

  • Circuit breakers, UL listed
  • Circuit breakers, IEC compliant

Cooling System

  • Installed radiators
  • Cooling system attachments
  • Water level switch gauges
  • Coolant


  • Rubber anti-vibration mounts
  • IBC isolators
  • Spring-type vibration isolator


  • Charging alternator
  • Heavy-duty starting system
  • Oversize batteries
  • Air starting motor with control and silencer
  • Jacket water heater
  • Battery chargers

Exhaust System

  • Y Adapters
  • Mufflers
  • Flexible fittings
  • Flange and exhaust expanders
  • Elbows

Factory Support

  • Factory commissioning

Fuel System

  • Primary fuel filter
  • Secondary fuel filters

Generators and Attachments

  • Low voltage generators 380, 400, 415 Volts 3 Phase, 1500 rpm
  • Space heater kit
  • 1400 and 1600 Frame
  • Pitch 0.6667
  • 6 Leads
  • Internally excitation
  • Generator conversion kits - PM to IE / IE to PM
  • Permanent magnet
  • RW


  • UL 2200 package
  • The following options are based on regional and product configuration:
  • Seismic Certification per applicable building codes: IBC 2000, IBC 2003, IBC 2006, IBC 2009, CBC 2007
  • EU Certificate of Conformance (CE)


  • Pyrometer and thermocouples

Lube System

  • Drain GP oil pan
  • Lube oil filters
  • Oil level regulator
  • Standard sump oil pan
  • Lube oil in standard sump
  • Prelube pump groups

Crankcase System

  • Crankcase protection group
  • Crankcase ventilation system

Mounting System

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

Power Connections

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

Special Tests / Reports

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

Starting / Charging System

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

Extended Service Coverage

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

See how 3512B (50 Hz) with Upgradeable Package compares against frequently compared products.

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Customer Value Agreements

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Commercial complex saves 6 million kW-h of energy consumption

Ecogen and Cat® dealer Sotreq develop turnkey cogeneration solutions throughout Brazil. In Rochaverá Corporate Towers, all power and air conditioning comes from Ecogen cogeneration plant while Cat generator sets provide backup power capable of a constant 100 percent load.

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Custom Power Solutions

There are no standard power solutions. Cat experts work with you to design a system to meet your individual power needs.

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Extended Service Coverage

Spend less time managing your equipment and more time running your business with options to protect you against unexpected repair costs.

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