With the exception of the incandescent light bulb, every load today creates harmonics. Unfortunately, these loads vary with respect to their amount of harmonic content and response to problems caused by harmonics.
Consider all site parameters before recommending an IG system. But first, measure existing equipment grounding system's impedance with a ground impedance tester prior to making any changes to the grounding system.
With today's technology, power quality students have many choices. And as more electrical contractors strive to keep up with that technology, many new training methods become viable alternatives to costly classroom instruction.
Here are five key revisions to this IEEE standard, some of which are in response to manufacturer and end user concerns. The upcoming version demonstrates that its working group is able to stay current in the ever-changing power quality field.
Finding voltage quality problems is a lot like detective work. You rely on the power line monitor to gather evidence of any unseen disturbances. But, how can you ensure a safe monitor hookup and meaningful captured data?
Proper bonding and grounding of communication systems provide reliable operation for voice/data equipment, while enhancing safety for the operator in the event of lightning and AC ground fault conditions. Using ANSI/EIA/TIA-607 grounding topologies, you can achieve these objectives.
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.