Atlas Copco Compressors has extended the GA VSD+ range of oil-injected rotary screw compressors through 50 hp (37 kW). The GA VSD+ range reduces energy consumption by up to 50 percent and increases free air delivery by up to 13 percent, according to Atlas Copco.
Integrated with the Elektronikon controller, the cycle prevents condensation in compression oil. The motor exceeds the latest NEMA Premium efficiency requirements. The motor and drive train share a single drive shaft and are vertically aligned, reducing the total footprint by up to 55 percent compared with many other compressors. 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.