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M843NW3 Specification Sheet

M843NW3 Specification Sheet

Product catalog summary
Features and Benefits:
  • Full flow, spin-on oil filter with bypass.
  • Gear driven seawater pump.
  • Replaceable heat exchanger element.
  • One-piece heat exchanger, expansion tank, and liquid-cooled exhaust manifold made of cast iron to resist corrosion and electrolysis.
  • DC system uses reliable relays instead of an unrepairable printed circuit board.
DC Electrical System:

The DC system is powered by a 12-volt starter motor and battery charging alternator with a belt guard. It includes a standard S-1B remote mount control panel with an hour meter, stop-start switch with run light, and a preheat switch. The panel can expand to six panels up to 110 feet from the set, with a 20-foot plug-in panel harness for flexible mounting. Safety shutdowns for low oil pressure, high coolant temperature, and high exhaust temperature are standard.

AC Generator:

The Northern Lights generator is direct-coupled, four-pole, revolving field, and four-lead re-connectable with Class “H” insulation and a pre-lubricated bearing. It features a conservative heat rise rating of 95°C/50°C ambient. The external automatic voltage regulator provides ±5% voltage regulation and is powered by a dedicated AC winding for improved motor starting. The AVR is protected by a dedicated circuit breaker, and a 30 amp mainline circuit breaker protects against AC overloads and shorts.

Specifications and Dimensions:
  • AC Output: 12 kW (60 Hz, 1800 RPM, 1 Ph, 1.0 PF, 120-240 V/50A, 120 V/100A) and 10 kW (50 Hz, 1500 RPM, 1 Ph, 1.0 PF, 220 V/45.4 A).
  • Optional Three Phase with 0.8 PF.
  • Voltage regulation: ±1%.
  • Weight and Height: Approximate dry weight 837 lbs (380 kg), Length 39.4 in (1000 mm), Width 22.8 in (580 mm), Height 25.2 in (641 mm).
  • Sound enclosure weight: 75 lbs (34 kg), Enclosure length: 39.4 in (1000 mm), Enclosure width: 22.8 in (580 mm), Enclosure height: 25.7 in (654 mm).
Engine Data:
  • Type: Vertical inline 3 cylinder diesel.
  • Displacement: 91 in3 (1.5 ltr).
  • Bore/Stroke: 3.30/3.50 in (84/90 mm).
  • HP @ RPM: 20/1800, 17/1500.
  • Approximate fuel use: 1800 RPM @ full load 1.20 gph (4.50 lph), 1800 RPM @ half load 0.62 gph (2.30 lph), 1500 RPM @ full load 1.00 gph (3.78 lph), 1500 RPM @ half load 0.51 gph (1.93 lph).
Installation Data:
  • Wet exhaust elbow: 2 inch (51 mm) OD.
  • Raw water inlet: 3/4 inch (19 mm) OD.
  • Fuel inlet and return: 1/4 inch NPT.
Cooling System:

Standard heat exchanger cooling with optional keel cooling. The cupro-nickel, tube-type heat exchanger has removable ends for easy cleaning. The seawater pump is gear driven, eliminating a potential fail point.

Fuel System:

The self-venting fuel system features an injection pump with a 5% mechanical governor for close AC frequency control and pintle injectors with replaceable tips. The stop solenoid acts directly on the fuel rack, eliminating linkage problems. The fuel pump is mechanical with a hand primer, eliminating electronic pump failures.

Intake and Exhaust:

The M843NW3 meets and exceeds US EPA Tier III emission standards. Its cast aluminum intake manifold reduces intake noise, and its washable air cleaner simplifies routine maintenance. The wet exhaust elbow is cast iron for safety.

Lubrication System:

The closed crankcase vent system traps oil vapor and keeps the engine room clean. It has a 4.2 qt (4 ltr) oil capacity for better lubrication and 200-hour oil change intervals.

Design Features:

The integrated unit features a base with a drip pan and platform mounts to isolate vibration.

See more

Catalog excerpts

M843NW3 Specification Sheet-1

MARINE GENERATORS Engine Data Vertical inline 3 cylinder diesel Three Phase with 0.8 PF Voltage regulation Sound enclosure weight Enclosure length Enclosure width Enclosure height 2. Actual fuel consumption will vary depending on operating conditions. Installation Data Wet exhaust elbow Raw water inlet Engine Block - Four cycle, 3 cylinder, liquid cooled, naturally aspirated, overhead valve diesel with glow plugs for quick starting. Swirl combustion chambers improve fuel efficiency and reduce smoke. Cooling System - Standard heat exchanger cooling with optional keel cooling. Cupro-nickel, tube-type heat exchanger has removable ends for easy cleaning. Rubber impeller. Bronze and stainless steel seawater pump is gear driven eliminating a potential fail point. Fuel System - The self-venting fuel system features an injection pump with 5% mechanical governor for close AC frequency control and pintle injectors with replaceable tips. Stop solenoid acts directly on the fuel rack eliminating linkage problems. The fuel pump is mechanical with a hand primer, eliminating electronic pump failures. Intake and Exhaust - The M843NW3 meets and exceeds US EPA Tier III emission. Its cast aluminum intake manifold reduces intake noise and its washable air cleaner makes routine maintenance simple. The wet exhaust elbow is cast iron for safety. Lubrication System - Fuel inlet and return DC Electrical System - The DC System is powered by a 12 volt starter motor and battery charging alternator with belt guard. The set is equipped with a standard S-1B remote mount control panel, featuring an hour meter, stop-start switch with run light and a preheat switch. The standard panel can expand to six panels up to 110 feet from the set, while the 20 foot (6m) plug-in panel harness lets you mount your panel anywhere onboard. Low oil pressure, high coolant temp and high exhaust temp safety shutdowns standard. AC Generator - The Northern Lights, direct coupled, four pole, revolving field, four lead re-connectable generator has Class “H” insulation and a pre-lubricated bearing and features a conservative heat rise rating: 95°C/50°C ambient. Our external automatic voltage regulator gives you ± 5% voltage regulation and is powered by a dedicated AC winding for improved motor starting. The AVR is protected by a dedicated circuit breaker. The 30 amp mainline circuit breaker protects generator from AC overloads and shorts. • One-piece heat exchanger, expansion tank and liquid cooled exhaust manifold. Cast iron to resist corrosion and electrolysis. • Replaceable heat exchanger element. The closed crankcase vent system traps oil vapor and keeps engine • DC system uses room clean. 4.2 qt (4 ltr) reliable relays instead oil capacity for better of an unrepairable lubrication and 200 hour printed circuit board. oil change intervals. Design Features - Integrated unit features base with drip pan and plateform mounts to isolate vibration. www.northern-lights.com Dealer • Gear driven seawater pump. • Full flow, spin-on oil filter with bypass. 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. © 2016 All right

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*Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.