When designing ground-fault protection (GFP) for a power distribution system, you should always consider the nature of the power source. If the power...More
Lurking in the shadows of even the most unsuspecting operations from corporate to commercial to industrial facilities is a condition known as poor voltage...More
Power quality questions continue to revolve around one underlying issue related to electronic equipment: its ability to withstand the effects of electrical...More
Voltage fluctuations in power systems can cause a number of harmful technical effects, resulting in disruption to production processes and substantial...More
Inrush currents associated with motor starting and transformer energizing can cause interaction problems with other loads in a facility or on the power...More
Sometimes the best way to describe how to analyze a communication cable common-mode (CM) noise problem is to describe an actual procedure. The following...More
Probability is a fundamental concept in statistics, often thought of as the odds. It is defined as the ratio of the number of favorable outcomes to the...More
When it comes to providing suitable power, grounding, communications, and environmental control for a facility that has significant amounts of susceptible...More
I have found and corrected several instances of privately owned high-voltage systems with unjacketed primary concentric neutral (exposed bare neutral...More
Responding to testing requirements imposed after a woman was electrocuted while walking her dog in the East Village in 2004, this March New York City's...More
In 1996, a ski resort near Silverthorne, Colo. installed a pumping system to lift water up to a river, whose water flows into a lake at the base village...More
Common to any production operation is movement, usually driven by electric motors. Better control of this movement contributes to improved operational...More
A modern distribution system that feeds a facility having a significant environment of susceptible electronic equipment requires protection against lightning-induced...More
Protecting susceptible electronic equipment from AC power line disturbances is a major concern for most people, whether their business environment is...More
Electric utility engineers designing new transmission and distribution (T&D) systems and evaluating existing systems have relied on sophisticated software...More
We've all heard the term used in discussions of possible power quality problems, yet we still seem to have a lack of understanding of what a transient...More
Thanks to ongoing innovations in technology, electrical engineers' approach to motor protection has changed over the years. The traditional strategy to...More
Is the latest in UPS technology a little more than your budget can bear? Don't fret. There are other ways to protect your sensitive equipment from voltage...More
If you're in charge of power quality at your facility, the very thought of a power outage not to mention the slew of problems that accompany one should...More
The typical home sees a 100V surge hourly and a 1000V surge monthly. However, most residential customers don't know how to protect their expensive entertainment...More
You can view power quality problems as the difference between the quality of power supplied and the quality of the power required to reliably operate...More
It always amazes me how soon we forget the pain of a power outage. I can understand how this happens when the outage is brief, taking down the system...More
After deregulation began allowing competition for power quality contracts in the electric utility industry, energy service companies (ESCOs) have been...More
With the rising importance and complexity of data networks in today's competitive business climate, the concern of losing communications is steadily increasing....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.
See side-by-side comparisons of different flame resistant fabrics exposed to flash fires, illustrating the extent, severity and location of burns....More
