336 Excavator

  • Specs Summary

G3520C Gas Generator

From natural gas-fueled combined heat and power (CHP) systems and emergency power for facilities, to renewable biogas energy to support the local grid, or electricity generated from coal mine gases, Caterpillar has a wide range of reliable gas power solutions.

Standard Equipment

Air Inlet

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

Control Panel

  • EMCP II+ or EMCP4.3

Cooling

  • Engine driven water pumps for jacket water and aftercooler
  • Jacket water and SCAC driven pumps
  • Jacket water and SCAC thermostat and outlet--ANSI 6 in/DN150
  • 2nd Stage SCAC-Cat Flange
  • ANSI Class 6 in/DN customer flange connections for JW inlet and outlet

Exhaust

  • Dry exhaust manifolds, insulated and shielded
  • Cat-flanged face outlet on turbocharger
  • Individual exhaust port and turbocharger outlet wired to Integrated Tmeperature Sensing Module (ITSM) with GECM providing alarms and shutdowns

Fuel System

  • Throttle plate, 24V DC actuator, controlled by GECM
  • 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
  • Electronic fuel metering valve, ANSI flange
  • 24V ETR Gas Shutoff Valve

Ignition System

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

Generator

  • SR4B or SR5
  • 3-phase brushless, salient pole
  • Permanent Magnet Excitiation
  • Caterpillar's Digital Voltage Regulator (CDVR) with 3-phase sensing and KVAR/PF control
  • Class F Insulation & temperature rise
  • Anti-condensation space heater
  • Reactive droop 
  • Winding temperature detectors
  • Bus bar connections

General

  • Crankshaft Vibration Damper and Guard
  • Operation and maintenance manuals
  • RH Service
  • Parts Book

Optional Equipment

Air Inlet

  • Enclosure Mounting Brackets and Piping
  • Air cleaner with precleaner

Contol Panel

  • Local NFPA99-110 Alarm Module w/LEDs
  • Custom 8-Light Alarm Module
  • Synchronizing Module
  • Engine Failure Relay
  • PL1000E/PL1000T Communications Module
  • Remote 24-32V 8/16 Annunciator

Cooling

  • Aftercooler air lines, aftercooler core replacement
  • Jacket water coolant heater
  • Engine pumps
  • Inlet/Outlet connections

Exhaust

  • 305/360/406 mm flange kits
  • Exhaust expanders
  • Flexible fittings
  • 305/360/406 mm Elbow Kits
  • Mufflers (15/18/25 dBA Attenuation) and spark-arresting muffler with ANSI companion flanges

Fuel System

  • 14-69 kPa (2-10 psi) gas pressure regulator
  • 207-276kPa, 30-40 psi gas knockdown regulator
  • Fuel filter
  • 24V DC Gas shutoff valve

Generator

  • Low voltage extension box
  • Cable access box
  • Bearing temperature detectors
  • Generator air filter
  • Medium and high voltage generators and attachment
  • 8.7/15 kV Class  Current Transformers (CCCT, DCT, CT)
  • Annunciator Modules
  • 50 Hz--3300/6600 Volt Generator Options
  • 60 Hz--480/4160 Volt Generator Options
  • Generator Removal
  • European Bus Bars

Governing System

  • Load share module

Starting/Charging

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