6CM25C

Specifications

Benefits & Features

Equipment

The 6CM25C generator set brings to the offshore industry a legacy of proven reliability and durability in the marine industry. CM offshore generator sets feature standard modular designs, engine-mounted pumps and filters, and a full range of factory attachments that make their installation simple and efficient. Ideal applications for the 6CM25C offshore generator sets are main power on-board production vessels and platforms. Complete package offerings are MCS type-approved and compliant with IMO Tier II emissions standards, making their integration into vessels and platforms a simplified operation. Cat generator sets are backed by the worldwide network of Cat dealers ready to support your operation with technical support, service, parts, and warranty.

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Metric

Engine Specifications

Minimum Rating 2400.0 kV·A 1920.0 ekW

Maximum Rating 2400.0 kV·A 1920.0 ekW

Emissions IMO Tier II IMO Tier II

Bore 10.0 in 255.0 mm

Displacement 7469.0 in³ 122.0 l

Weight 94799.0 lb 43000.0 kg

Aspiration Turbocharged-Aftercooled Turbocharged-Aftercooled

Stroke 15.7 in 400.0 mm

Engine Control Electronic Electronic

Generator Set Control Electronic Electronic

Dimensions

Width 97.6 in 2479.0 mm

Length 317.7 in 8070.0 mm

Height 168.9 in 4290.0 mm

Engine Design

- World-class reliability and durability - Incorporates years of proven component reliability and - durability in marine industry n Medium speed long-stroke engine design - Ideal configuration for dynamically positioned semisubmersible rigs and drillships - Compact cylinder head design - Nodular cast-iron block with integrated ducts for lubricating oil and charge air - Segmental camshaft design - 25° tilt capability in all directions - Engine design based on the higher requirements of heavy fuel oil n High efficiency turbocharger - Cylinder liner, only cooled outside the engine block - Engine control terminal with analog instrumentation in robust cast casing n Connecting rod, oblique split design - Compact module for lower valve drives and injection pump drives with cam followers - Flexible Camshaft Technology (FCT)

Ease of Installation

- Standard modular design allows for ease of installation and reduced complexity - Installation-friendly, due to pumps and filters installed on the engine n Cooling water system with simple plug-in connections - Full range of factory-installed engine attachments allows customization and reduction in installation time

Packaging Concept

- Assembled, tested, and validated as a package to minimize package vibration and maximize component life

Improved Serviceability

- Large inspection openings allow for convenient access to core engine internals for easier serviceability - Core engine components designed for reconditioning and reuse at overhaul - Worldwide dealer network with factory-trained technicians means that parts and support are never out of reach - Simplified parts spectrum by using single-pipe exhaust gas ducting

Web Site

For all your petroleum power requirements, visit www.catoilandgasinfo.com

6CM25C Standard Equipment

Engine

Motor-driven barring gear, fitted on engine

Reversing contractor and pushbutton switch with cable

Electronic speed setting equipment with actuator and speed pick-up

Emergency shutdown equipment with pushbutton, separate, for manual emergency stop

Engine Indicators

Gauge board with set liquid damped pressure gauges for: fuel, lubricating oil, fresh water, starting air, and charge air.

On-engine thermometers for fuel, lubricating oil, fresh water, and charge air

Electric remote speed indicator

Turbocharger and remote speed indicator

Exhaust gas temperature indicator

Control

Manual control on engine, including: control panel with start /stop key, speed setting device, mechanical shutdown device, change over of control functions from engine to remote control

Starting solenoid valve on engine, 24 V DC

Separate electronic speed governor

Monitoring for Unattended Operation

Pressure switches, mounted on engine, for: - Lube oil pressure at full load below danger level - Low lube oil pressure - Lube oil pressure below danger level - Lube oil pressure prelubrication failed - Low fresh water pressure at engine inlet - Fresh water pressure at engine inlet below danger level - Low fresh water pressure in LT circuit - Low starting air pressure - Low control air pressure engine/shutdown air pressure - Low fuel pressure at engine inlet Switches for: - High lube oil temperature at engine inlet - Lube oil temperature at engine inlet above danger level - High water temperature at engine inlet - Water temperature at engine outlet above danger level - High charge-air temperature at engine inlet - Detection of water in charge-air duct - Leak fuel level - Alarm contact for high differential pressure at fuel filter - Alarm contact for high differential pressure at lube oil back flushing filter - Set of thermocouples after each cylinder, before and after turbocharger - Crankcase oil mist detector Control Cabinet with housings for wall mounting, including: - Protection equipment designed for automatic and manual stop input signals, starting interlock input signals, monitoring for the wire break of the input signal units and the emergency shutdown solenoid - Speed recording system for overspeed, firing speed and minimum speed - Start /stop logic, controlled by engine automatic start (optional) - Service hour counter - Noris alarm system, cassette type, designed for alarm inputs for the engine including exhaust mean-value monitoring equipment as well as alarm inputs for the propulsion plant - Group alarm panel for the bridge and with optional and acoustical alarm equipment

Starting Air System

Separate non-return valve for the starting air pipe to the engine

Air Intake System

Air intake filter, fitted on the turbocharger

Air bottles, separate

Diesel Oil System

Separate circulating pump driven by electric motor, horizontal or vertical

Duplex filter with differential pressure indication

Exhaust System

Turbocharger at free end with transition nozzle (0 degrees from the vertical and away from engine), with compressor cleaning device

Expansion joint separate

Separate silencer and spark arrester, unlagged 35 dB(A)

Fresh Cooling Water System

HT pump, fitted on engine

LT pump, separate, vertical design, electric motor driven

HT thermostat, not powered and separate

Engine preheating equipment, fitted on base frame

Lubricating Oil System

Plate cooler, fitted on engine

Force pump, fitted on engine

Prelubrication pump, fitted on base frame, electric motor driven

Boll and Kirch automatic backflushing filter, separate

Duplex filter with differential pressure indication, separate

Pressure control valve, separate

Thermostat, not powered, separate

Connecting Parts - Engine

Set of connecting parts between flange coupling and flywheel

Flexible flange coupling between engine and generator

Base frame with flywheel guard and incorporating lube oil sump tank, for engine and generator

Mounting of engine and generator on the base frame

Set of bonded rubber rails for resilient mounting of the base frame

Set of flexible pipe connections

Tools

Set of tools for the engine including hydraulic tightening tools and nozzle tester

Set of tools for turbocharger

Inside micrometer for cylinder liners

Ruler for cylinder liner

Spare Parts

Set of engine spare parts for unrestricted operation

Set of spare flexible pipe connections