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AC and DC Drives: Drive Heat Dissipation and Enclosure Sizing

 

 
This is an upgrade of the Application Notes Binder Article 1B. This upgrade reflects the latest product offerings from Reliance Electric Standard Drives. AC and DC drives are very efficient devices. AC drive efficiencies are >= 95%, while DC drive conversion efficiency is often over 98%. Even with these high conversion efficiencies, drive losses (heat dissipation) must be considered when sizing the enclosure that will house one or more AC or DC drives In this application note, we will provide AC and DC drives watts losses and the standard enclosure heat dissipation capabilities. This provides for an appropriate cabinet selection for installation purposes. Because AC and DC drives operate at less than 100% efficiency, heat is generated by the drive and expressed in terms of watts loss. Tables 1 through 6 provide values for a wide range of AC and DC drives.
Products & Services
AC to DC converter chips transfer an AC input into DC power using switching (MOSFET, IGBT) or rectification (diodes, Schottky diodes). Learn more about AC to DC Converter Chips
Adjustable speed drives alter the speed of a driven shaft to a speed selected by an operator. Search by Specification | Learn more about Adjustable Speed Drives
AC motor drives interface controllers to AC motors. They match the control signals (voltage and power levels) as well as the signal type (analog or digital). They also provide power conversion, amplification, and the sequencing of waveform signals. Search by Specification | Learn more about AC Motor Drives
DC motor drives act as the interface and power supply between a motion controller and a DC motor. Search by Specification | Learn more about DC Motor Drives
Power supplies are devices that produce AC or DC power.  This grouping includes current sources, DC power supplies, AC-DC adapters, DC-DC converters, AC power sources, and DC-AC inverters. Search by Specification | Learn more about Power Supplies
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Topics of Interest
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