For Immediate Release
July 23, 2008
New Siemon Whitepaper Addresses Temperature Specification Challenges Facing the PoE Plus Application
"IEEE 802.3at PoE Plus Operating Efficiency: How to Keep a Hot Application Running Cool " was developed to help network professionals select cabling capable of supporting PoE Plus with minimized risk of degraded performance due to elevated temperature
Watertown, CT — Siemon is proud to launch a new technical whitepaper by noted cabling expert Valerie Maguire (Rybinski) entitled "IEEE 802.3at PoE Plus Operating Efficiency: How to Keep a Hot Application Running Cool". This new whitepaper is available for download at: http://www.siemon.com/go/POE
With the pending PoE Plus Standard nearing completion and attracting global interest, attention has been focused on temperature-related issues inherent to transmitting higher levels of power over twisted-pair cabling. This current-induced temperature elevation increases the risk of degraded physical and electrical performance, which can impact overall network performance and reliability.
Maguire's comprehensive 8 page white paper provides an in-depth analysis on the nature and causes of cabling temperature increases in PoE Plus applications, dispels some commonly held heat dissipation myths and provides actionable guidance on selecting PoE Plus-capable cabling.
Excerpt:
"Good heat dissipation performance exhibited by the cabling plant is especially critical since no methods exist today for monitoring temperature rise in an installation or mitigating a high-temperature environment. Historically, a comfortable level of performance margin is considered to be 50% headroom to Standards-specified limits (this would be equivalent to 6 dB headroom for a transmission performance parameter). Following these guidelines, the solutions that offer the most desirable levels of heat dissipation headroom in support of the PoE Plus application are category 6A F/UTP and category 7A S/FTP cabling systems.
Highlights and conclusions:
- Although safe for humans, the 600mA currents associated with the PoE Plus application generate heat in the installed cabling plant.
- Excessive temperature rise in the cabling plant cannot be tested or mitigated in the field.
- Excessive temperature rise in the cabling plant can result in an increase in insertion loss and premature aging of jacketing materials.
- Choosing media with improved heat dissipation performance can minimize the risks associated with excessive temperature rise.
- Category 6A F/UTP cabling systems dissipate almost 50% more heat than category 5e cabling.
- Category 7A S/FTP cabling systems dissipate at least 60% more heat than category 5e cabling.
To download an electronic copy or order a hardcopy of Siemon's "IEEE 802.3at PoE Plus Operating Efficiency: How to Keep a Hot Application Running Cool", including complete heat dissipation performance data for category 5e UTP, category 6 UTP, category 6A UTP, category 6A F/UTP, and category 7/7A S/FTP cabling, visit: http://www.siemon.com/go/POE
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- About Siemon
- Established in 1903, Siemon is an industry leader specializing in the manufacture and innovation of high quality, high-performance network cabling solutions. Headquartered in Connecticut, USA, with global offices, manufacturing and service partners throughout the world, Siemon offers the most comprehensive suite of copper (unshielded and shielded twisted-pair) category 5e, category 6 (Class E), augmented category 6/category 6A(Class EA) and category 7/7A (Class F/FA), and multimode and singlemode fiber cabling systems available. With over 400 active patents specific to structured cabling, from patch cords to patch panels, Siemon Labs invests heavily in R&D and development of industry standards, underlining the company's long-term commitment to its customers and the industry.
- About the author:
- Valerie (Rybinski) Maguire holds the position of Global Sales Engineer at The Siemon Company. Maguire received her B.S.E.E. degree from the University of Connecticut and actively participates in working groups responsible for the development and publication of telecommunications standards such TIA/EIA-568-B, TIA/EIA-568-B.2-1 (category 6), and newly published TIA-568-B.2-10 (category 6A).
- Maguire is the chair of the TIA TR-42.7 copper cabling sub-committee, TIA TR-42 appointed liaison to IEEE 802.3, and document editor for the next edition '568-C.2 Standard. In addition, Maguire is a frequent speaker at industry conferences. She has authored over 45 technical articles and engineering papers and holds one U.S. Patent.
- Press Contact:
- Brian Duval
- Marketing Communication Manager
- Siemon
- 101 Siemon Company Drive
- Watertown, CT 06795
- Phone : (1) 860 945-4380
- Fax : (1) 860 945-8503
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