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THE PROPER CHARGING OF STATIONARY LEAD-ACID BATTERIES.
By J. Allen Byrne.
All too often, stationary batteries are not correctly or adequately charged. This leads to a shortened battery life and may also cause a premature and sometimes catastrophic battery failure. It is the author’s experience that almost 50 percent of all stationary batteries are not being properly charged. This observation is based upon hundreds of site visits, multiple battery system tests, and the examination of numerous maintenance records...
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THE INSPECTION IS COMPLETE. WHAT ARE YOU DOING WITH THE DATA?
By Rick Tressler.
All too often, stationary batteries are not correctly or adequately charged. This leads to a shortened battery life and may also cause a premature and sometimes catastrophic battery failure. It is the author’s experience that almost 50 percent of all stationary batteries are not being properly charged. This observation is based upon hundreds of site visits, multiple battery system tests, and the examination of numerous maintenance records...
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ULTRACAPACITOR/BATTERY HYBRID DESIGNS: WHERE ARE WE?
By Carey O’Donnell, Charles Finin, and Howard Gartland.
Capacitor technology has played a significant role in power transmission and delivery applications for many decades. These traditional thin film and oil based capacitor designs performed a variety of functions, including grid load leveling, power factor correction, peak shaving, and voltage balancing. But in the past decade there has been substantial research and development that has lead to significant evolutionary advances in capacitor design and capabilities; the description today is ultracapacitors. These ultracapacitors are driving increased attention on efforts to determine if there is a future role for ultracapacitors in traditional user-level stationary applications, particularly in conjunction with battery energy storage designs and systems...
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STATE-OF-CHARGE: SPECIFIC GRAVITY VERSUS BATTERY CHARGING CURRENT
By Steve Clark
One of the significant changes in IEEE 450-2002, Maintenance, Testing and Replacement of Vented Lead-Acid Batteries in Stationary Applications, was to endorse the use of battery current for monitoring the state-of-charge of lead-acid batteries. The position was recently accepted by the Nuclear Regulatory Commission (NRC) Office of Nuclear Reactor Regulation during review of Technical Specification Task Force Traveler 500. However, in talking to members of the battery community outside of the IEEE 450 working group, it appears that the basis for this change is not clearly understood. The purpose of this paper is to examine why the working group endorsed float current monitoring as the primary method to determine state-ofcharge....
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Dear Valued Customer;
Welcome to another edition of our monthly E-Newsletter. Your single source for information associated with the wire-line & wireless communications services industries.
Last month, we attended the 2010 Battcon International Stationary Battery Conference and would like to share some of the papers we found relevant to the telecommunication industry. The first two papers examined best practices in terms of proper battery charging techniques and inspection data analysis. The third paper offered the current state and trend in ultracapacitor/battery hybrid design. The last paper examined changes in the IEEE 450-2002 state-of-charge monitoring standards. To learn more about Battcon and its conferences, please visit http://www.battcon.com.
We have been closely following the development of an emerging IEEE 1679 standard pertinent to our industry: "Recommended Practice for the Characterization and Evaluation of Emerging Battery Technologies in Stationary Applications". The standard has been in the work since 2005 and is meant to provide guidelines to evaluate new battery technology. We expect the standard to be available at the end of this year or early next year. More Iinformation on the IEEE Stationary Battery Committee and its standards can be found at http://www.ewh.ieee.org/cmte/PES-SBC/index.htm.
Should you have any question, please do not hesitate to contact us at: telecommunicationstimes@anscorporate.com.
Paul Fettuccia
Vice President
ANS, Advanced Network Services, LLC.
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