TConnolly
Lifetime Supporting Member
Motor: 60HP (44.8Kw), 480V, 60Hz, 1200RPM
Application: Axial piston hydraulic Pump, w/ electronic volume and pressure comp controls.
Motor will be on a VFD primarly for energy conservation reasons.
It will run approximately 15% of the time at 50% speed (30hz). During this time is will be virtually unloaded (pump frictional loads only). Depending on what we find out during comissioning of the system it will turn somewhere between 80% and 100% of speed for about 50-60% of the time - this will be for energy conservation because full HP is not required at these times.
Would you bother spec.-ing an inverter duty motor? Or will a standard motor be OK? I'm leaning toward the standard motor instead of inverter duty, but I thought I would solicit the opinion of the board because its collective "smarts" is quite formidable.
Application: Axial piston hydraulic Pump, w/ electronic volume and pressure comp controls.
Motor will be on a VFD primarly for energy conservation reasons.
It will run approximately 15% of the time at 50% speed (30hz). During this time is will be virtually unloaded (pump frictional loads only). Depending on what we find out during comissioning of the system it will turn somewhere between 80% and 100% of speed for about 50-60% of the time - this will be for energy conservation because full HP is not required at these times.
Would you bother spec.-ing an inverter duty motor? Or will a standard motor be OK? I'm leaning toward the standard motor instead of inverter duty, but I thought I would solicit the opinion of the board because its collective "smarts" is quite formidable.