M673LD30 pages

M673LD3 Specifications and Dimensions
Dimensional Drawing

M673LD3 - 5 kW/4.5 kW

AC Output1

5 kWt

60 Hz, 1800 RPM, 1 Ph, 1.0 PF,

240 V/20.8 A, 120 V/41.6A

4.5 kWt

50 Hz, 1500 RPM, 1 Ph, 1.0 PF,
220 V/20.5 A

Voltage regulation t

±5%

Lugger L673L Engine

Type t

Vertical inline 3 cylinder diesel

Displacementt

20.37 517.3

46.4 in3 (0.761 ltr)

Bore/Stroke t

2.64/2.83 in (67/72 mm)

HP @ RPM t

10.1/1800 8.4/1500

Approx. fuel uset
t 1800 RPM @ full load2t

0.59 gph (2.2 lph)

t 1800 RPM @ half load2t

0.32 gph (1.2 lph)

t 1500 RPM @ full load

0.50 gph (1.9 lph)

2t

t 1500 RPM @ half load2t

Installation Data & Weight

28.5

495

724

0.28 gph (1.1 lph)

Wet exhaust elbowt

1.5 inch (38 mm) OD

Raw water inlett

3/4 inch (19 mm) OD

Fuel inlet and returnt
Approximate dry weightt

19.5

M673LD3 Overall Dimensions L x W x H: 28.5 x 19.5 x 20.4 inch (724 x 495 x 517 mm)
Sound Enclosure Dimensions L x W x H: 28.5 x 19.5 x 20.8 inch (724 x 495 x 528 mm)
Sound Enclosure Weight: 44 lbs (20 kg)

1/4 inch NPT

Dimensions given in inches (mm). Dimensions subject to change without notice.t
Contact dealer or visit www.northern-lights.com for most current installation drawings.

377 lbs (171 kg)

1. Based on SAE J1995 and ISO 3046. 2. Actual fuel consumption
will vary depending on operating conditions.

M673LD3 Features and Benefits

Engine Block

Lubrication System

•t Four cycle, 3 cylinder, liquid cooled, naturally aspirated, overhead valve
diesel.

•t Full ow, spin-on oil lter with bypass.

• t Swirl combustion chambers improve fuel efciency and reduce smoke.

•t 3.1 qt (3 ltr) oil capacity for better lubrication and 200 hour oil change
intervals.

• t Glow plugs for quick cold starting.

•t Oil drain for quick, clean oil changes.

• t Freshwater cooling.

• t Closed crankcase vent system traps oil vapor and keeps engine room
clean.

Cooling System

•t Heat exchanger or keel cooled.

DC Electrical System

• t One-piece heat exchanger, expansion tank and liquid cooled exhaust
manifold. Fewer troublesome hoses and gaskets. Cast iron to resist corrosion
and electrolysis.

•t 12 volt starter motor and battery charging alternator with belt guard.

•t DC system uses reliable relays instead of an unrepairable printed circuit
board.

•t Heat exchanger cooling is standard. Cupro-nickel, tube-type heat exchanger
has removable ends for easy cleaning. Rubber impeller, seawater pump of
bronze and stainless steel is gear driven; no belt.

•t Standard panel: Remote mount S-1B has hour meter, stop-start switch with
run light and preheat switch.

•t Fuel system is self-venting.

•t 20 foot (6m) plug-in panel harness lets you mount your
panel anywhere onboard. Better than inaccessible unit
mount panels that are prone to vibration problems.

Fuel System

•t Injection pump with 5% mechanical governor for close AC frequency
control.
•t Pintle injectors with replaceable tips.
•t Mechanical lift pump with hand primer. No electric pump to fail.
•t Large spin-on fuel lter.
•t Flexible fuel lines routed to fuel manifold.
•t Stop solenoid acts directly on the fuel rack eliminating linkage problems.

Intake and Exhaust

• t Meets US EPA Tier III emission standards at date of manufacture.
•t Washable air cleaner.
•t Cast aluminum intake manifold with Sound Maze air intake reduces intake
noise.
•t Cast iron, wet exhaust elbow for safety.

Dealer

• t Expandable to six panels up to 110 feet from the set.

•t Low oil pressure, high coolant temp and high exhaust
temp safety shutdowns standard.

AC Generator

•t Northern Lights, direct coupled, four pole, revolving eld, four lead reconnectable
generator with Class “H” insulation and prelubricated bearing. Conservativet
heat rise rating: 95°C/50°C ambient .
•t External automatic voltage regulator gives you ±5%
voltage regulation. AVR powered by dedicated AC
winding for improved motor starting. AVR circuit
breaker.
•t 30 amp mainline circuit breaker protects generator
from AC overloads and shorts.

www.northern-lights.com
Northern Lights, Inc. • 4420 14th Ave. NW., • Seattle WA 98107
Tel: 206-789-3880 • 1-800-762-0165 • Fax: 206-782-5455
Information and dimensions subject to change without notice.
Northern Lights and Lugger are registered trademarks of Northern Lights, Inc.
© 2012 All rights reserved. Litho USA. S101 6/13