More and more often, variable frequency drives (VFDs) are used for control of fans and compressors in HVACR systems. The benefits are well documented and industry acceptance is such that most electric ...

Improperly terminated VFD cables can generate up to 60 amps of common mode current spikes through facility ground grids, damaging unconnected control and communication equipment. Most electricians ...

Kiko based in Vancouver Canada has created a small yet unique VFD clock equipped with IV-18 vacuum fluorescent tubes. Making it a unique timepiece from the nixie tube era. Launched via Kickstarter ...

If you're installing a variable-frequency drive (VFD) or uninterruptible power supply (UPS) — or if you already have this equipment in place — you should be monitoring certain power quality parameters ...