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Upto 50% energy saving is achieved by using the latest technology VSD combined with a Interior PM motor.The VSD changes to motor speed to slow down and speed up as as air demand changes..Compact small in size Interior PM motor has no bearings which means no wearing parts,no maintenance on motor side and gears or belts leading to a Transmission Efficiency of 100%.
A fixed speed compressor operates on a load-unload band of atleast 10 PSI around the working pressure whereas with VFD compressor can be operated within a band of 2 PSI .For every 2PSI reduction in operating pressure ,there is 1% power saving.