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Using ProDrive Software on PCs Only Equipped with USB Ports and No Serial Ports

Using ProDrive SoftwareMany newer PCs and laptop computers do not have any DB9-type RS232 serial ports. They are only equipped with USB ports.

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Sizing Three-Phase Inverters for Single-Phase Power Applications

Sizing Three-Phase InvertersAlthough Hitachi does not offer inverters above 3 hp specifically sized and rated for single-phase operation, single-phase power can be safely used with larger 3-phase rated inverters, provided that care is taken to properly upsize and apply the inverter.

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Applying Inverters To Centrifugal Compressors In HVAC Chillers

Centrifugal Compressors In HVAC ChillersWhen applying an inverter to centrifugal compressors on HVAC chillers, there are a number of factors to consider.

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Minimizing Motor Shaft Bearing Current

Minimizing Motor Shaft Bearing CurrentOne cause of premature bearing failure is so-called “electrical discharge machining.” This problem has been around for many years. Current takes the path with the least resistance which is sometimes through the motor bearings.

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What Is Meant by Meeting the Requirements of IEEE-519-1992?

IEEE-519-1992 RequirementsFirst and foremost, IEEE-519-1992 describes the RECOMMENDED Practices and Requirements for Harmonic Control in Electrical Power Systems.

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