The SLAC National Accelerator Laboratory is home to a two-mile long linear accelerator – the longest linear accelerator in the world.   This multipurpose laboratory for astrophysics, photon science, accelerator and particle physics research is operatedby Stanford University, but used by scientists from many countries.  In fact, a few scientists have been awarded the Nobel Prize for work carried out at SLAC.  With that kind of pedigree, it is understandable why data storage needs are taken very seriously on this Menlo Park, CA campus. ...

Although much has been published on variable-frequency drives (VFDs), people continue to be confused by them. The intent of this article is to provide a basic overview of these devices by evaluating key features as well as their impact on a building’s electrical system....

When it comes to the most typical cause of poor power factor in a facility, motor inductance is a likely culprit. The problem worsens when motors are not loaded to their full capacity. Harmonic currents reflected back into the system also reduce power factor ...