Today’s data centers handle an increasing volume of global digital communication traffic compared to their predecessors of yesteryear. The computers and digital devices that provide streaming video, Internet of Things (IoT) data, business communications, etc. are driving the growth of new data centers to handle this traffic.
Since as early as the 1990s, there have been questions, discussions, and application notes on the topic of using a 2-contactor bypass or 3-contactor bypass with variable frequency drive (VFD) configurations.
Voltage spikes, bearing or winding failure, capacitance/insulation issues... you may have one of these problems to solve (or better, to avoid) in order to enjoy the full benefits of your drive.
The Royal University Hospital (RUH) provides acute-care services for the Saskatoon, Saskatchewan region, serving as the main trauma center for the entire region and housing many maternal and child, neurosurgery, and cardiovascular surgery services.
This is the second half of a two-part article discussing principles and application of the AC induction motors that provide motive power for most of the equipment HVACR engineers specify.
So, you want to generate your own power, for emergencies and/or for everyday use. For the sake of your design/budget/schedule, learn what the utility might expect from you — and what you should expect from it.
Facility engineers who must maintain or oversee installation of V-belts throughout an HVAC system: take these dozen tips for proper tensioning, followed by more on how to identify and troubleshoot the consequences of improper tension.