I'm here referring specifically to the San Ace 172 9E type, 172mm x 51mm axial fan. If you look at the datasheet for this fan and compare the power drawn at the same peak RPM for the +12VDC models of the fan vs. the +48VDC models of the fan the +48VDC models of the fan use from 0.5Watts to >1.5 Watts less power for the same CFM, static pressure and RPM. Even greater power savings are seen in the +24VDC models of the fan where for the exact same CFM, static pressure and RPM, the +24VDC models... Read more Weiterlesen...