Variable Frequency Drives (VFD’s)
–Conveying Systems •Commercial –HVAC Compressors –Pumps and Air Handlers •Residential –Variable Speed HVAC equipment –Energy Efficient Washing Machines How Have We Varied Speed Historically? • Change Speed – Belts & pulleys – Chains & sprockets – Gear drives – Multi-speed motors • Vary Speed – Variable pitch belts ...
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