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| Feature Articles: | |
 Welcome Aboard |
Reliability News - Disaster Recovery & Contingency
Planning |
| TechKnowledgy - Equipment Susceptibility |
Case Study - Hospital Experiences Power Outage Despite
UPS |
| PQ Tip of the Month |
The Dirty Half Dozen |
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Product Update - Our Family is Growing |
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Welcome AboardWelcome to Dranetz-BMI’s inaugural edition of The Power to Manage Your Power e-news publication. Dranetz-BMI is rooted in its commitment to power quality awareness and education. From our perennial bestseller, The Dranetz-BMI Field Handbook for Power Quality Analysis, to our ongoing power quality seminar series, we work hard to keep you up-to-date on this important and evolving topic. The goal of this newsletter is to further that tradition by bringing you new, relevant information directly to your desktop. The Power to Manage Your Power will be distributed monthly and will contain a series of brief articles on power reliability, power technology, power quality tips, case studies and more. We welcome your feedback and suggestions and ask that you send all comments to eleinfuss@dranetz-bmi.com. We also encourage you to share this newsletters with your colleagues, who can subscribe directly by following the opt-in directions on the Dranetz-BMI website (www.dranetz-bmi.com). Finally, if this publication reached you in error, we apologize and ask you to spend a moment following the opt-out directions. |
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| Reliability News: Disaster Recovery and Contingency Planning | |
Although disaster recovery and contingency
planning have been key business functions for decades, September 11
brought renewed vigor and commitment to this topic. Today, contingency planning is considered a business
necessity that provides a host of benefits, including:
Contingency planning with regard to power system infrastructure is especially important to businesses with computerized operations and processes. .....Sign Up Today>>> |
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| TechKnowledgy-Equipment Susceptibility | |
| Evaluating the susceptibility of
equipment to the quality of the electric supply is a question that
every facility manager or electrical contractor has to address. The
IEEE 1346 Standard shows how to correlate performance data of the
equipment to the voltage and help address this question.
The key to using this method is in two charts that are developed and then overlaid on top of one other. Step 1 is to monitor a site for at least one month and prepare a histogram of voltage sags (number, magnitude and duration). Dots are placed on the graph corresponding to the collected data and connected using contour lines, like a topographical map that civil engineers use when designing roads. .....Sign Up Today>>> |
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| Case Study-Hospital Experiences Power Interruption Despite UPS | |
| A lightning storm caused a fault that resulted in the operation of a re-closure of the utility feed to this large city hospital. The outage affected critical medical diagnostic equipment, including the angio suite Cath lab X-ray system, MRI and CAT scan devices. Since the hospital had invested in UPS and emergency generator systems, this unexplained interruption was quite disturbing and costly. Fortunately, the hospital had installed the Signature System continuous power monitoring system on the building feed, input and output to the UPS, and input to the Cath Lab as part of its infrastructure upgrade program. .....Sign Up Today>>> | |
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| PQ Tip of the Month-The Sine Wave | |
| The most common type of electromagnetic
phenomena that cause power quality related problems are changes in
the basic waveshape of the voltage - the sine wave. One mathematical
number used to represent this complex shape with a single number is
RMS --- root mean squared. It takes each of the sample points
(typically 128) in one cycle of the waveform, multiplies the value
by itself (squares it), adds them all up and takes the average
(mean), and then takes the square root of that number. .....Sign Up Today>>> |
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| The Dirty Half Dozen | |
| Power professionals, like all good forensic scientists, tend to organize power quality issues into categories. They often use the term the dirty half dozen to identify the most commonly encountered power disturbances. Each month, we will outline one of those categories and provide you with information on symptoms, probable causes and solutions to help you improve your forensic skills. We begin with the voltage sag (also called the dip). .....Sign Up Today>>> | |
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| Product Update-Our Family is Growing | |
| Dranetz-BMI and LEM have formed a strategic partnership to co-brand and co-market select products and services within the power quality and energy instrumentation market. Initially, the partnership will focus on serving the Americas, where Dranetz-BMI and LEM will introduce a new group of handheld power quality and energy analyzers. These products will leverage Dran-ViewÒ, Dranetz-BMI's powerful visualization, analysis and reporting software. Dran-View software is considered by many to be the leading software of its kind and serves as a common platform for most of the Dranetz-BMI instruments. .....Sign Up Today>>> | |
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Thank you, |
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