Oil-injected Rotary Screw Compressors
Atlas Copco Compressors has extended the GA VSD+ range of oil-injected rotary screw compressors through 50 hp (37 kW). Launched in the United States in June 2013, the innovative and award-winning GA VSD+ range reduces energy consumption by up to 50 percent and increases free air delivery by up to 13 percent, compared to a traditional load/unload compressor of the same type.
With this extension, Atlas Copco is the first in the market to introduce a condensation prevention cycle for variable speed drive compressors, the company says. Integrated with the Elektronikon® controller, the cycle prevents condensation in compression oil, even in extremely low load conditions.
With a patented motor that exceeds the latest NEMA Premium efficiency requirements, the GA VSD+ range features a motor and drive train that share a single drive shaft and are vertically aligned, reducing the total footprint by up to 55 percent compared to other compressors on the market. The motor drive train is completely enclosed, resulting in a NEMA 4 rating for protection against dust, debris and water and the single closed oil-circuit cools the motor and lubricates the element and bearings, resulting in a very reliable and compact compressor that is also extremely quiet.