Alaska Diesel Electric has introduced a new Northern Lights model MP445H marine auxiliary generator set rated 70 kW. This unit uses modern clean-burn diesel technology with the Deere PowerTech diesel engine. The turbocharged diesel engine reduces N[O.sub.x], HC and particulate exhaust emissions in a compact four-cylinder configuration, ADE said.
Other improvements including gear driven water pump for high reliability, horizontal heat exchanger and serpentine alternator belt with automatic tensioner.
The cooling system offers increased capacity, better access to the seawater cooling pump and only one hose in the coolant circuit. The seawater-exposed part of the system utilizes all copper nickel components and the hose is a high quality silicon type.
Exhaust system manifolding has also been made to be interchangeable with older versions where upgrading of these older units is desirable.
The MP445H also marks the introduction of an optional digital voltage regulator with its own discrete power supply. This separate power source offers a more precise solid state automatic voltage regulator (AVR) and can be used for more close tolerance voltage regulations. The AVR will not be adversely affected by electric motor starting, according to Alaska Diesel Electric. The gen-sets also meet the 300 percent short circuit support requirement for Lloyds and ABS classified vessels.
The new Northern Lights gen-set continues the low-vibration, high-fuel efficiency, single-side service, [+ or -]1 percent voltage regulation, vibration mounts and polyurethane finish common to the company's previous genset designs. The units can also be prepared at the factory with sophisticated auto-paralleling and auto-start systems to meet an owner's particular requirements.
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