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Atlas Copco introduces new 500 kVA generating set

Wednesday, May 20th, 2009

New top of the range QAS 500 generating set from Atlas Copco offers dual frequency operation rated at 500 kVA at 50 Hz (571 kVA at 60 Hz) with noise reduction and environmental protection features for continuous on-site power in industrial, public utilities, rental and construction applications.
A new top of the range QAS 500 generating set Atlas Copco, rated at 400 kW, 500 kVA prime power at 50 Hz (457 kW, 575 kVA at 60 Hz) is introduced for industrial, rental, construction site and public utilities applications.
The QAS range, comprising a wide variety of models rated between 14 – 571 kVA has been designed for fast, easy and safe transportation and on-site handling on virtually any unprepared surface.
Housed in a noise attenuated enclosure made from zinc plated steel and painted with powder coating paint, the QAS 500 meets a sound power level (LWA) of 99 dB(A) at 50Hz ; making it eminently suited for applications in noise sensitive areas.
The enclosure also provides optimum resistance against corrosion ensuring that it remains in good condition and retains an improved resale value.
Integrated lifting structure
An integrated lifting structure on the enclosure contributes to the total sturdiness of the set ensuring safe and efficient handling.
It is positioned in the center point of gravity for correct balancing and is dimensioned to support at least 4 times the maximum weight without breaking.
The integration of forklift slots also saves time and facilitates safe and efficient handling and transportation.
Well placed fixation points ensure safe transportation around the construction site. Integrated bumpers protect the enclosure against mechanical impact during transportation and handling.
The frame is also a 110% containment base for all the necessary liquids such as oil, coolant and fuel. The sturdy spillage-free frame offers maximum environmental protection.
Ease of maintenance
Large access doors allow easy access to all service points and the generator components; making any preventative maintenance and repairs faster and easier.
External drain points are positioned to allow easy and efficient draining of oil, coolant and fuel with minimized risk of environmental spillage. Special drain points are also fitted to allow the fuel tank to be cleaned and water removed from the base frame; once again with minimal environmental impact.
A 905 litre standard fuel tank, positioned in the center of the base frame ensures continuous operation at full load for a complete shift.
Dedicated control compartment
The new QAS 500 features a dedicated compartment for the electrical cubicle making it safe to access even when ‘running.’
Isolating the electrical components from the engine compartment provides reduced vibration and temperature impact on the more sensitive electrical components.
The cubicle door is sealed to prevent water and dust ingress avoiding possible damage to the electrical components.
An industrial type B-curve 4-pole main circuit breaker safeguards the alternator against external short circuits by an instantaneous trip 3 – 5 times the nominal current.
All main circuit breakers fitted in the QAS range are Omnipolar – an essential feature for compatibility with the different configurations of customers’ applications.
Fail safe protection
Critical engine parameters such as oil temperature, oil pressure and coolant temperature are monitored by means of a failsafe system.
Should a sensor or transducer fail, the system automatically shuts down to avoid any damage to the engine.
A dual stage fuel filter with integrated water separator and a heavy duty dual stage air filtration system ensure longer service intervals and increased engine life and up-time. An extra safety cartridge filter element allows air filter replacement during operation.
The new model is powered by a 6-cylinder, direct injection, turbocharged intercooled Volvo TAD 1641 GE diesel engine, driving a Leroy Somer alternator with PMG-technology.
A high performance radiator with high capacity cooling is also fitted to guarantee 100% prime power at 50 Hz — operation is assured in high ambient temperatures up to 40°C and 1000 m altitude.
Heavy duty digital controller
Generator control, protection and monitoring are provided with a local or remote start digital control module (Qc1002). Fitted as standard, the system is ideal for all automatic controlled applications.
All Qc controllers are equipped with external communication protocols prepared to support the Cosmos option for satellite monitoring.
The Qc4002 controller is available as an option for multi start paralleling operations. As a standard, this controller is equipped with PMS (Power Management system), that enables the user to save fuel and to extend the life time of the engine.
Type CEE socket panels are available as an option to make power output connections easier, safer and faster.
In order to increase flexibility, a combination of different 3 phase socket sizes are available.
Spark arrestor, air inlet shut down valve and quick couplings for an external fuel tank are also optionally available.
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