Learning Center

What is a Line Reactor?

By Yin on 12th Jun 2014

A line reactor (also referred to as a "choke") is a variable frequency drive (VFD) accessory that consists of a coil of wire that forms a magnetic field as current flows through it. This magnetic field limits the rate of rise of t …

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Variable Frequency Drive Harmonic Mitigation

By Craig Hartman on 20th Mar 2014

Table of Contents Background of Harmonics IEEE 519 - Recommended Practices for Harmonic Control Effects of Harmonics Types of Harmonic Mitigation Equipment Harmonic Mitigation Cost Measurement Considerations Re …

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NEMA VFD Enclosure Ratings

By Luke Lancaster on 20th Mar 2014

IP VFD Enclosure Ratings

By Tyler Simmons on 20th Mar 2014

The Ingress Protection Rating (IP) consists of the letters IP followed by two digits. IP Code classifies and rates the degrees of protection provided against the intrusion of solid objects (including body parts like hands an …

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How to Read a Motor Nameplate

By Paul Rossiter on 20th Mar 2014

Below is a sample nameplate. You can click on the links in the nameplate to learn more. CT:VT: MODEL NO./SERIAL NO. HZ LOW VOLTAGE …

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How to Perform Basic VFD Programming (Video)

By Craig Hartman on 20th Mar 2014

Video TranscriptIn this segment we are going to show you how to use the basic 7 parameters to set up the Mitsubishi FR-PU07-01 advanced parameter keypad.As you look at the top row of this keypad there is the “PRSet” ("PrSET" …

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