Isolated ground (IG) systems have long been considered best practice for reducing noise (Electrical Noise on page C38) signals on the power supply of...More
The Michigan Public Service Commission recently released the findings from research it conducted regarding electric power quality, service reliability and power plant generating cost efficiency...More
Examining the 2009 offerings by six of the largest uninterruptible power supply (UPS) manufacturers in the 500kVA and larger capacity range, Mission Critical West, Redondo Beach, Calif., recently unveiled its Tier IV Critical Facilities Infrastructure study....More
Cutting back on preventive maintenance procedures you’re your uninterruptible power supply (UPS) systems during tough economic times can spell disaster down the line...More
IR cameras and thermographic analysis can save time and money in maintenance and troubleshooting of many electrical circuits, particularly snowmelt systems...More
Medium-voltage (MV) generators are not designed to withstand full fault current during a single phase-to-ground fault, which is why they are connected...More
When installing a variable-frequency drive (VFD) or uninterruptible power supply (UPS), monitor certain power quality parameters to maximize their performance...More
Last month, we discussed low power factor and how resonance can disrupt facility operations. This month, we'll talk about harmonic filter design and various...More
According to the IEEE Standard Dictionary of Electrical and Electronic Terms, power factor (PF) is defined as the ratio of the circuit power (watts) to...More
You can find significant energy-saving opportunities through load balancing and load scheduling when using power logging test tools. Whether conducting...More
Most modern industrial facilities have widespread applications of nonlinear loads, many of which represent a significant portion of the total facility...More
A measure of a facility's total power delivered divided by its IT equipment power usage level, power usage effectiveness (PUE) is especially important...More
VDC Research Group, Natick, Mass., estimates that the growth of worldwide shipments of medium and large uninterruptible power supplies (UPSs) surpassed shipments of smaller UPSs by more than 2-to-1...More
Responding to market needs, server technology has rapidly advanced, delivering high-density, highly reliable computing without the massive harmonics issues...More
LEDs have unique and compelling characteristics that make them ideal for industrial lighting applications. But there are a variety of misconceptions about LEDs, how well they work, how long they last, and more. Digital Lumens developed this whitepaper to dish up the facts around LEDs and address some common misunderstandings....More
An arc flash is associated with the explosive release of energy caused by an electrical arc, due to either a phase-to-ground or a phase-to-phase fault. This kind of fault can result from many factors – a dropped tool, accidental contact with electrical systems, buildup of conductive dust, corrosion or improper work conditions.....More
Abstract: In this webinar, Mike will not only explain the current NEC requirements for GFCIs and AFCIs, but he'll explain how they operate, what causes their premature failure, and when they won't provide the safety protection you might have thought they would.
Abstract: This webinar will teach attendees the difference between risk and hazard, and how the choice of system grounding has a direct impact on reliability and safety.
Arlington’s recessed combination power and low voltage boxes – TV BOX™ and Indoor IN BOX™ – offer secure, convenient & easy way to mount LCD or plasma TVs flush against a wall....More
