8.0 EDT D-NET – 8.0kW, 60 Hz Diesel Generator

Description

Westerbeke 8.0 EDT D-NET 8.0 kW 60 Hz Marine Diesel Generator

Low-Speed Digital Marine Power for Yachts and Professional Vessels

The Westerbeke 8.0 EDT D-NET 8.0 kW 60 Hz Marine Diesel Generator is an electronically governed generator developed to provide dependable onboard electricity for motor yachts, sailing yachts, cruising catamarans, liveaboard vessels, passenger boats, workboats, and other professional marine applications.

Operating at 1800 RPM, the 8.0 EDT combines a naturally aspirated three-cylinder diesel engine with a brushless four-pole alternator, D-NET digital monitoring, electronic governing, freshwater cooling, a self-bleeding fuel system, remote starting, automatic safety shutdowns, and optional NMEA 2000 communication.

The standard 8.0 EDT-614 configuration produces 8.0 kW at 120/240V, 60 Hz and single phase, with a rated output of approximately 66.7 amps at 120V or 33.3 amps at 240V.

Its output may support compatible onboard systems such as:

• Battery chargers and inverter-chargers
• Marine refrigeration and freezers
• Freshwater and seawater pumps
• Navigation and communication electronics
• Cabin and deck lighting
• Electrical outlets
• Entertainment systems
• Galley appliances
• Appropriately sized air-conditioning systems
• Water makers and other auxiliary loads

Actual suitability depends on the vessel’s continuous electrical demand, motor- and compressor-starting current, simultaneous equipment use, distribution voltage, and required operating reserve.

Production and Availability Status

The Westerbeke 8.0 EDT D-NET is no longer in production. Westerbeke continues to provide official technical documents, parts information, wiring diagrams, installation drawings, service manuals, and maintenance-parts references for the model.

Current availability may therefore be limited to:

• Unused old-stock generators
• Dealer or distributor surplus
• Previously installed low-hour units
• Professionally reconditioned generators
• Compatible replacement parts and assemblies

Before purchasing an available unit, confirm:

• Serial number and production date
• New, used, surplus, or reconditioned condition
• Recorded operating hours
• D-NET control configuration
• Included remote display and harness
• Westerlink or NMEA 2000 configuration
• Sound Guard inclusion
• Maintenance history
• Warranty terms
• Parts availability

Any advertised Westerbeke 8.0 EDT price should be considered together with the generator’s condition, included accessories, control configuration, service history, and installation compatibility.

D-NET Digital Generator Technology

The Westerbeke 8.0 EDT belongs to the company’s D-NET electronic diesel generator range.

D-NET was developed to combine dependable low-speed diesel generation with digital monitoring and network-compatible controls. Instead of relying entirely on traditional analogue gauges, the system provides operating information and diagnostic messages through an illuminated digital display.

The D-NET system monitors information including:

• Starting-battery voltage
• Generator voltage
• Generator frequency
• Engine-oil pressure
• Coolant temperature
• Exhaust temperature
• Generator operating condition

The system displays written operational and diagnostic information rather than requiring the operator to interpret unexplained numerical fault codes. Illuminated status lights provide a quick visual indication, while additional information can be reviewed through the display.

This digital approach may help operators recognise developing problems before they result in serious engine or generator damage.

Westerlink and Optional NMEA 2000 Communication

The original model-specific specification offered the 8.0 EDT D-NET with standard Westerlink communication or optional NMEA 2000-compliant databus communication.

NMEA 2000 allows compatible onboard instruments, displays, navigation systems, sensors, and generator controls to exchange information through a common network backbone. This can reduce the number of individual wiring harnesses required throughout the vessel and allow generator information to be displayed at multiple locations.

Original communication options included:

• Westerlink digital communication
• Optional NMEA 2000 databus communication
• Remote Westerlink digital display
• Remote NMEA 2000 digital display
• Remote start-and-stop control

Because the8.0 EDT D-NET is a legacy model, the installed communication system should be identified before ordering replacement displays, wiring harnesses, control modules, or network accessories.

Quiet, Low-Speed 1800 RPM Operation

The Westerbeke 8.0 EDT D-NET operates at 1800 RPM, considerably slower than compact 3600 RPM marine generators.

Its low-speed design is combined with:

• A smooth three-cylinder engine
• Electronic governing
• Tuned air-intake silencer
• Fail-safe rubber anti-vibration mounts
• Freshwater-cooled exhaust manifold
• Water-injected marine exhaust
• Optional Sound Guard SST enclosure

Westerbeke designed the tuned air-intake silencer to reduce induction noise, while electronic governing helps minimise noticeable changes in engine speed when electrical loads are connected.

Final onboard noise levels will also depend on:

• Generator foundation
• Machinery-space insulation
• Ventilation openings
• Waterlift-muffler selection
• Exhaust-hose routing
• Flexible fuel and cooling connections
• Cable and hose support
• Structural vibration transmission

A low-speed generator can still be noisy if the foundation, exhaust, ventilation, or sound insulation is incorrectly designed.

Three-Cylinder Marine Diesel Engine

The Westerbeke 8.0 EDT D-NET is powered by a naturally aspirated, three-cylinder, four-stroke diesel engine with 80.43 cubic inches or approximately 1.318 litres of displacement.

The engine operates at 1800 RPM in its 60 Hz configuration and produces approximately 18.9 horsepower at rated speed. It uses a 22:1 compression ratio, swirl-type combustion system, Bosch-type injection pump, throttle-type injectors, and 12V sheathed glow plugs for starting assistance.

Engine specification	Published value
Number of cylinders	3
Cylinder arrangement	Vertical inline
Engine cycle	Four stroke
Fuel type	Diesel
Aspiration	Naturally aspirated
Displacement	80.43 cu. in. / 1.318 L
Bore × stroke	3.07 × 3.62 in.
Compression ratio	22:1
Rated speed	1800 RPM
Engine output	Approximately 18.9 hp
Combustion system	Swirl type
Fuel-injection pump	Bosch type
Governor	Electronic
Electrical system	12V DC, negative ground

Engine construction includes:

• Cast-iron cylinder head
• Cast-iron cylinder block
• Forged crankshaft
• Four main crankshaft bearings
• Rotating overhead valves
• Full-flow spin-on oil filter
• Forced lubrication by gear pump

The three-cylinder configuration provides smoother operation than many compact single-cylinder or twin-cylinder generators, while the cast-iron construction and forged crankshaft support durability in extended marine service.

8.0 kW Electrical Output at 60 Hz

The standard Westerbeke 8.0 EDT D-NET-614 provides the following electrical ratings:

Electrical specification	Published rating
Generator model	8.0 EDT-614
Rated electrical output	8.0 kW
Voltage	120/240V
Rated current	66.7/33.3 amps
Frequency	60 Hz
Phase	Single phase
Number of wires	Four
Power factor	1.0
Operating speed	1800 RPM
Starting arrangement	Remote

The generator was designed as an adjustable 50 or 60 Hz platform. In its corresponding 50 Hz configuration, it was marketed as the 6.0 EDT operating at 1500 RPM. Any frequency conversion should only be performed according to approved Westerbeke procedures because it affects speed, electrical output, voltage connections, control settings, circuit protection, and connected onboard systems.

Marine Electrical Load Planning

A professional marine electrical load calculation should be completed before choosing the 8.0 EDT.

The calculation should account for:

• Continuous electrical demand
• Air-conditioning compressor startup
• Refrigeration compressor startup
• Freshwater-pump starting current
• Seawater-pump starting current
• Battery-charger demand
• Water-maker load
• Galley-appliance consumption
• Simultaneous equipment operation
• Future electrical additions
• Desired operating reserve

Electric motors and compressors may draw significantly more current during startup than during normal operation. A generator may therefore appear correctly sized based on running wattage but still experience voltage or frequency reduction when several motors start simultaneously.

Possible signs of an undersized or overloaded generator include:

• Frequency instability
• Voltage reduction
• Difficulty starting compressors
• Excessive exhaust smoke
• Engine-speed fluctuation
• Circuit-breaker operation
• High operating temperature
• Protective shutdowns

Electronic governing improves load response, but it cannot compensate for continuous overloading.

Electronic Governing for Stable Frequency

The 8.0 EDT D-NET uses an electronic engine governor to maintain the correct 1800 RPM speed as electrical demand changes.

When an air-conditioning compressor, pump, battery charger, or other substantial load starts, the generator engine experiences an immediate increase in mechanical resistance. The electronic governor adjusts fuel delivery to limit speed loss and maintain stable 60 Hz output.

Westerbeke published frequency regulation of approximately 0.5 Hz, or 0.60%, from no load to full load.

Stable frequency supports the operation of compatible:

• Air-conditioning systems
• Refrigeration compressors
• Battery chargers
• Electric pumps
• Navigation electronics
• Communication equipment
• Lighting circuits
• Entertainment systems
• Monitoring equipment

Brushless Four-Pole Alternator

The Westerbeke 8.0 EDT D-NET uses a brushless, four-pole, revolving-field alternator.

Its published alternator characteristics include:

• Brushless construction
• Four-pole electrical design
• Revolving field
• Power take-off interface
• Class H winding insulation
• Approximately ±5% voltage regulation
• Approximately 0.5 Hz frequency regulation
• Direct-connected centrifugal cooling blower
• Temperature rise within the relevant NEMA definition

The four-pole design enables the generator to produce 60 Hz electricity at 1800 RPM. Brushless construction reduces routine maintenance associated with carbon brushes, while Class H insulation provides thermal protection for the windings.

Westerbeke also states that the generator’s electromagnetic-interference performance exceeds the requirements of most marine radio telephones and standard televisions.

Dependable onboard electrical performance still requires correct:

• AC cable sizing
• Circuit protection
• Grounding and bonding
• Neutral configuration
• Shore-power transfer switching
• Cable separation
• Ventilation
• Load management

Freshwater Cooling with Marine Heat Exchanger

The 8.0 EDT D-NET uses a freshwater cooling system with a marine heat exchanger.

Engine coolant circulates internally through the cylinder block, cylinder head, and freshwater-cooled cast-aluminium exhaust manifold. Raw water drawn through the vessel’s seawater intake removes heat through the exchanger before being discharged through the water-injected exhaust system.

Published cooling-system features include:

• Closed freshwater coolant circuit
• Marine heat exchanger
• Coolant-recovery tank
• Gear-driven raw-water pump
• Freshwater-cooled exhaust manifold
• 45-degree water-injected exhaust elbow
• One-inch raw-water connection

The published cooling-system capacity is approximately 5 US quarts or 4.7 litres.

Routine cooling-system maintenance should include inspection of:

• Coolant level and condition
• Raw-water seacock
• Seawater strainer
• Raw-water pump and impeller
• Heat-exchanger passages
• Cooling hoses and clamps
• Zinc anodes where fitted
• Exhaust-injection elbow
• Siphon-break arrangement
• Wet-exhaust hose
• Waterlift muffler

Restricted raw-water flow may cause high coolant or exhaust temperature and activate the generator’s automatic shutdown system.

Wet-Exhaust and Siphon-Break Requirements

The generator uses a water-injected marine exhaust system with a two-inch exhaust-elbow connection.

The exhaust installation must prevent seawater from entering the generator under all vessel-loading and operating conditions. Westerbeke requires a siphon break where the exhaust-manifold injection point is at or below the loaded waterline. The siphon-break loop should be positioned above the vessel’s waterline and regularly inspected for correct operation.

Incorrect exhaust design may cause:

• Seawater entering the engine
• Internal corrosion
• Bent connecting rods
• Exhaust-system flooding
• Serious engine damage
• Vessel flooding

The final exhaust arrangement should be designed by a qualified marine installer using the approved installation manual and model-specific drawing.

Self-Bleeding Diesel Fuel System

The Westerbeke 8.0 EDT D-NET incorporates a self-bleeding marine diesel fuel system.

Published fuel-system features include:

• Bosch-type injection pump
• Solenoid fuel shutoff
• Throttle-type injectors
• Secondary replaceable fuel filter
• 12V electric fuel-transfer pump
• Fuel supply and return connections
• Self-bleeding operation

Westerbeke specifies fuel-supply and return piping between approximately ¼ inch and ⅜ inch internal diameter, depending on the installation.

A properly designed fuel system should also include:

• A suitable marine fuel-water separator
• Accessible fuel shutoff valves
• Correctly sized supply and return lines
• Approved marine diesel hose
• Secure hose supports
• Protection from heat and abrasion
• Clean, uncontaminated diesel fuel

Approximate Fuel Consumption

The published approximate fuel consumption at full electrical load and 1800 RPM is:

Operating condition	Approximate consumption
Full load at 1800 RPM	0.82 US gal/hr
Full load at 1800 RPM	3.1 L/hr

Actual fuel consumption will vary according to electrical demand, generator condition, fuel quality, machinery-space temperature, ventilation, installation, and maintenance.

Operating the generator with a sensible electrical load is generally preferable to running it for prolonged periods with almost no demand. The vessel’s normal load profile should be considered before selecting this model.

Remote Starting and Digital Controls

The Westerbeke 8.0 EDT D-NET was designed for remote operation through its D-NET digital control system.

Available control features included:

• Digital display and diagnostic panel
• Illuminated operating-status indicators
• Remote starting and stopping
• Westerlink remote digital display
• Optional NMEA 2000 remote display
• Generator voltage monitoring
• Generator-frequency monitoring
• Oil-pressure monitoring
• Coolant-temperature monitoring
• Exhaust-temperature monitoring

The panel allows operators to review operating data and diagnostic messages without entering the machinery space.

Automatic Safety Shutdowns

The generator monitors important operating conditions and can shut down automatically when a potentially damaging fault is detected.

Published safety shutdowns include:

• Engine overspeed
• Engine underspeed
• Low lubricating-oil pressure
• High exhaust temperature
• High engine-coolant temperature

The standard generator also includes an AC output circuit breaker and a 50-amp battery-charging alternator.

Automatic shutdowns help protect the generator but do not replace routine inspection of:

• Engine-oil level
• Coolant level
• Raw-water discharge
• Fuel supply
• Electrical connections
• Drive belt
• Hoses and clamps
• Exhaust components
• Machinery-space ventilation

Starting System and Battery Charging

The  8.0 EDT D-NET uses a 12V solenoid-operated electric starting motor and glow-plug starting assistance.

Published starting-system specifications include:

Starting-system specification	Published value
Electrical system	12V DC, negative ground
Starting motor	12V solenoid-operated
Cold-cranking requirement	Approximately 240 amps
Battery-charging alternator	50 amps
Starting aid	12V sheathed glow plugs

The generator starting battery should be correctly sized, securely mounted, connected with marine-grade cables, and protected by suitable switching and circuit protection.

Power Take-Off Interface

The alternator design incorporates a power take-off interface.

With properly selected customer-supplied accessories, it may be possible to operate compatible auxiliary systems such as:

• Hydraulic pumps
• Bow or stern thrusters
• Hydraulic winches
• Small compressors
• Approved emergency-drive systems

Any power take-off installation must be professionally engineered. Mechanical power used through the interface reduces the power available for electrical production and must not overload the engine.

Optional Westerbeke Sound Guard SST

The 8.0 EDT D-NET was offered with an optional Westerbeke Sound Guard SST, part number 53462.

The enclosure uses a stainless-steel base and frame with powder-coated aluminium panels, providing additional sound attenuation and corrosion resistance.

Sound Guard specification	Published value
Part number	53462
Length	36.1 in. / 917 mm
Width	23.2 in. / 589 mm
Height	25.3 in. / 643 mm
Approximate weight	90 lb. / 41 kg

The Sound Guard should not be treated as a replacement for correct machinery-space ventilation, exhaust design, flexible mounting, or structural sound insulation.

Because this is a discontinued model, availability of a complete new enclosure or replacement panels should be confirmed before purchase. 8.0 EDT D-NET

Dimensions, Weight and Installation Planning

Westerbeke’s legacy product page lists the following base-generator dimensions:

Measurement	Published value
Length	28.60 in. / approximately 726 mm
Width	18.60 in. / approximately 472 mm
Height	24.00 in. / approximately 610 mm
Dry weight	477 lb. / 216 kg
Exhaust connection	2 in. / 50.8 mm
Raw-water connection	1 in. / 25.4 mm
Maximum continuous angle	15° in all directions
Lubricating-oil capacity	4 qt / 3.8 L
Cooling-system capacity	5 qt / 4.7 L

These measurements should be treated as reference values. The official model-specific installation drawing should be used when fabricating the generator foundation and positioning fuel, seawater, exhaust, electrical, and remote-control connections.

Before installation, confirm:

• Machinery-space dimensions
• Mounting-hole positions
• Generator lifting and removal route
• Routine service clearance
• Sound Guard clearance
• Fuel supply and return
• Raw-water intake arrangement
• Siphon-break requirement
• Wet-exhaust configuration
• Starting-battery cable size
• AC output wiring
• Grounding and bonding
• Shore-power transfer arrangement
• Digital-control compatibility
• Ventilation capacity

Typical Marine Applications

Motor Yachts

The generator may support compatible air conditioning, refrigeration, battery charging, freshwater pumps, lighting, navigation electronics, entertainment systems, and galley appliances.

Sailing Yachts and Catamarans

Its low-speed operation and 8 kW output make it suitable for compatible cruising vessels requiring dependable power while underway or at anchor.

Liveaboard Vessels

The 8.0 EDT D-NET may supply refrigeration, water systems, battery banks, lighting, electrical outlets, climate-control systems, and selected domestic appliances.

Passenger and Hospitality Craft

The generator may provide electricity for compatible lighting, refrigeration, communication equipment, galley systems, pumps, and passenger-service loads.

Workboats and Professional Vessels

It may serve as a commercial marine diesel generator for communication systems, battery charging, refrigeration, pumps, lighting, and routine operational loads.

Marine Generator Replacement

The 8.0 EDT D-NET may replace an older marine generator when its output, voltage, frequency, phase, dimensions, weight, cooling, exhaust, fuel, digital controls, and vessel wiring are compatible.

Complete Technical Specifications

Specification	Details
Manufacturer	Westerbeke
Model	8.0 EDT D-NET / 8.0 EDT-614
Generator type	Electronic Marine Diesel Generator
Rated output	8.0 kW
Voltage	120/240V
Frequency	60 Hz
Phase	Single phase
Rated current	66.7/33.3 amps
Number of wires	Four
Power factor	1.0
Operating speed	1800 RPM
Engine cylinders	Three
Engine configuration	Vertical inline
Engine cycle	Four stroke
Aspiration	Naturally aspirated
Displacement	80.43 cu. in. / 1.318 L
Bore × stroke	3.07 × 3.62 in.
Compression ratio	22:1
Engine output	Approximately 18.9 hp
Governor	Electronic
Fuel system	Self-bleeding diesel
Fuel-injection pump	Bosch type
Alternator	Brushless, four pole
Voltage regulation	Approximately ±5%
Frequency regulation	Approximately 0.5 Hz
Winding insulation	Class H
Cooling	Freshwater with heat exchanger
Raw-water pump	Gear driven
Starting system	12V electric, remote
Battery alternator	50 amps
Raw-water connection	1 inch
Exhaust connection	2 inches
Approximate dimensions	28.6 × 18.6 × 24.0 in.
Approximate dry weight	477 lb. / 216 kg
Optional enclosure	Sound Guard SST PN 53462
Communication	Westerlink or optional NMEA 2000
Production status	Discontinued

Standard Equipment

Original standard equipment included:

• Three-cylinder Westerbeke diesel engine
• Brushless four-pole alternator
• D-NET digital display and diagnostics
• Electronic engine governor
• Automatic safety shutdowns
• AC output circuit breaker
• 50-amp battery-charging alternator
• Power take-off interface
• Self-bleeding fuel system
• Freshwater cooling
• Coolant-recovery tank
• Gear-driven raw-water pump
• 45-degree water-injected exhaust elbow
• Tuned air-intake silencer
• Fail-safe anti-vibration mounts
• Lubricating-oil drain hose
• Drip tray
• Top and side oil-fill points
• Belt guard
• Operator’s manual
• Parts documentation

The original literature advertised a five-year limited warranty and compliance with the applicable US EPA requirements at the time of production. Any warranty offered on a currently available unit must be confirmed according to its condition, serial number, commissioning history, seller, and registration eligibility.

Optional Equipment

Original available options included:

• NMEA 2000-compliant databus communication
• Remote NMEA 2000 digital display
• Remote Westerlink digital display
• Remote start-and-stop control
• Sound Guard SST, part number 53462
• Hydro-Hush muffler and fittings
• Fuel-water separator
• Anti-siphon valve with one-inch stainless-steel loop
• Ship-to-shore transfer switch
• Power take-off adapter
• Onboard spare-parts kit
• Extended-cruising spare-parts kit
• Technical manual
• White generator finish

Availability of legacy accessories should be confirmed before finalising an order.

Frequently Asked Questions

Is the Westerbeke 8.0 EDT D-NET still manufactured?

No. Westerbeke currently identifies the 8.0 EDT D-NET as a model that is no longer in production. Technical documents and parts information remain available.

How much power does the generator produce?

It produces 8.0 kW at 120/240V, 60 Hz and 1800 RPM, with a rated current of approximately 66.7/33.3 amps.

Is the Westerbeke 8.0 EDT D-NET a diesel generator?

Yes. It is a naturally aspirated, three-cylinder marine diesel generator with approximately 1.318 litres of engine displacement.

Does it use electronic governing?

Yes. Electronic governing helps maintain 1800 RPM and stable 60 Hz frequency as connected electrical demand changes.

Does the generator support NMEA 2000?

The model was available with optional NMEA 2000-compliant databus communication. Some units may instead use Westerlink, so the installed control configuration should be checked before ordering replacement components.

Is the engine freshwater cooled?

Yes. It uses freshwater cooling with a marine heat exchanger, coolant-recovery tank, and gear-driven raw-water pump.

Is a sound enclosure available?

The generator was originally offered with the optional Sound Guard SST, part number 53462. Availability should be confirmed because the model is discontinued.

How much fuel does the 8.0 EDT D-NET consume?

Westerbeke published approximate full-load consumption of 0.82 US gallons or 3.1 litres per hour at 1800 RPM. Actual consumption varies with load, condition, installation, and maintenance.

Can it replace another 8 kW marine generator?

Potentially. Compatibility must be confirmed for voltage, frequency, phase, rated output, dimensions, weight, mounting, fuel system, cooling, exhaust, digital controls, and vessel wiring.

Request Pricing and Availability

The Westerbeke 8.0 EDT D-NET 8.0 kW 60 Hz Marine Diesel Generator combines low-speed 1800 RPM operation, digital D-NET monitoring, electronic governing, smooth three-cylinder performance, freshwater cooling, a brushless four-pole alternator, remote operation, and optional NMEA 2000 communication.

Because this model is discontinued, customers should request confirmation of the generator’s condition, serial number, operating hours, control configuration, included accessories, maintenance history, warranty status, and parts availability before purchasing.

Contact our marine generator specialists to check the latest Westerbeke 8.0 EDT D-NET price, available inventory, shipping options, and compatibility with your vessel.