Power Your Customer's Critical Equipment Reliably
Apr 1, 2005, By Michael A. Stout, Falcon Electric
If you're an electrical contractor or engineer, you've no doubt noticed that customers with critical power needs are increasingly demanding 24/7/365 up-time...
Capturing Voltage Transients
Mar 1, 2005, By Jim Giordano, Square D Co.
Today's factory floors usually include a proliferation of sensitive electronics, such as programmable logic controllers (PLCs), variable-frequency drives...
Annual Cost of Power Interruptions Estimated at $80 Billion Maybe
Mar 1, 2005,
In the wake of 2003's Northeast blackout, researchers have focused their attention on investing to improve the grid, but a new study asserts that more...
Simplifying Harmonic Mitigation for Industrial Plants
Jan 1, 2005, by Reza Tajali, P.E., Square D/Schneider Electric
The challenge is to balance the capital costs of the proposed harmonic mitigation equipment against its effectiveness...
Countering the Heating Effects From Troublesome Harmonics
Dec 1, 2004, By Keith Lane, P.E., SASCO
This project proves you can overcome long horizontal runs and moderate levels of harmonics to provide reliable power...
Ask the Experts
Nov 1, 2004,
They can overheat your system and make your fluorescent lights flicker, and they're often caused by the instruments you need to improve power quality....
Interpreting and Analyzing Power Quality Measurements
Nov 1, 2004, By Chris Melhorn and Mark McGranaghan, EPRI-PEAC Corp.
Power quality has become a key concern for utility, facility, and consulting engineers because end-use equipment is now more sensitive to disturbances...
Diagnosing Power Problems at the Receptacle
Oct 1, 2004, By Duane Smith, Fluke Corp.
Three measurements taken at one outlet can provide you with a solid understanding of a building’s branch-circuit power supply...
What to Know About Common Mode Surges and Ground Contamination
Oct 1, 2004, By Rudy Harford, Zero Surge, Inc.
Not knowing the difference between ground noise and common mode surges and noise on power lines can cause you problems...
A Practical Guide for Electrical Reliability
Oct 1, 2004, By Wally Vahlstrom, Emerson Process Management
Reliability analysis often only implies an assessment of design, but system operations and maintenance typically have a more significant effect on system reliability...
Learning the Reliability Lingo
Oct 1, 2004, By Michael Eby, Editor-in-Chief
Probability of failure. Availability. Mean time to repair. Failure rate. Unavailability. Failure mode. Mean time to failure. Interruption. Dirty power. Do these terms and phrases mean anything to you?...
Ask the Experts
Jul 1, 2004,
It seems that no matter how many times our experts address the topic of triplen, there's always another facet of this disruptive harmonic current to be...
Ask the Experts
Jun 1, 2004,
Anyone will tell you, if you're going to have any success in dealing with power quality problems particularly with issues of a harmonic nature you're...
A Primer on Power Factor Correction
Jun 1, 2004, By Gonzalo Sandoval and Cesar Chavez Soria, Inelap
Power factor correction is a frequently misunderstood topic. Improper techniques can result in over-correction, under-correction, and/or harmonic resonance,...
Don't Let Voltage Drop Get Your System Down
Jun 1, 2004, By Mike Holt, NEC Consultant
Contrary to common belief, the NEC generally doesn't require you to size conductors to accommodate voltage drop. It merely suggests in the Fine Print...
Mitigation Technologies Compete for Market Share
May 1, 2004,
Harmonic cancellation transformers account for nearly half of the total industry sales of harmonic mitigation equipment, according to Allied Industrial Marketing...
