Power Over Ethernet
 |
US $7.00
The Importance of Site Surveys for Uninterruptible Power Supplies and Standby Power Systems
Guaranteeing uninterrupted power has never been more important for facilities managers. A site survey, early in the specification process, is vital for a successful Uninterruptible Power Supply UPS installation and future business continuity.
Above 5kVA, a reputable UPS supplier will usually recommend a site survey. For such installations, the site generally requires a little more thought about health and safety risk assessments, method statements, logistics and floor loadings, electrical installation, remote monitoring, environment and aftercare. Below 5kVA, surveys are less usual unless there are specific installation issues, such as those associated with long runtime battery packs.
Site survey is integral to successful UPS selection. For facilities teams, intent on optimum business continuity, site surveys should be an integral part of the pre-sale process. They offer the perfect opportunity to discuss the uninterruptible power supply installation with the manufacturer’s technical energy consultant (TEC). Trust and communication established at this stage often sets the pattern for a successful relationship.
A key part of UPS specification involves identifying both critical, essential and non-essential loads. It’s an inherently complex task that inevitably draws on site observations as well as theoretical data. Significantly, there’s a distinct difference between the power ratings on rear panel labels and those in operating manuals; that’s why ascertaining actual load ratings involves measuring the values drawn from the local distribution panel. This type of assessment is hard to achieve without specialist uninterrupted power knowledge and a site visit.
An overview of applications and equipment. Similarly, Power over Ethernet (PoE) applications often require upgraded capacity. With the criticality of certain applications dictating the degree of protection required, network managers need a sound overview of applications and equipment. During the site survey, a comprehensive network overview can establish this alongside highlighting how it is departmentalised. For example, if one component is shut down, how many other departments will continue to enjoy uninterrupted power?
With every square metre having to earn its keep, space planning is vital. This requires comprehensive understanding of current and planned loads and their role in business continuity. It is particularly important for a high-density datacenter and requires careful consideration of existing and future cooling and power requirements. The significance of the trade-off between uninterruptible power supply footprints (UPS and batteries) and revenue-earning hardware should not be ignored. Should server space be given over to UPS and batteries or should they be housed elsewhere?
A supplier that truly understands. When specifying UPS for uninterrupted power, everyone wants to avoid the risks of over- or under-specification. A site survey, enabling exploration of power protection needs, can help avoid this. An optimally specified uninterruptible power supply solution can only be procured from a supplier that truly understands the subject, an organisation’s vulnerabilities, complexities and business continuity objectives – hard to achieve without visits and site surveys.
In many ways, the science of uninterrupted power is less about electrical engineering than the dynamics of departmental interaction. Not least, it’s about the increased susceptibility to power issues of remote loads at the edge of the grid. Not only are power cuts more frequent here, but problems such as sags and surges too. A thorough site survey, allied to proven UPS technology, is essential. It also provides the structure for good documentation going forward, which in today’s dynamic and fast-moving business environments is a must.
A partnership supported by thorough site survey. Last but not least are the challenges of location, architecture and site availability. As well as creating site-specific needs, failure to properly understand the implications of these could jeopardise installation, UPS operation, maintenance of uninterrupted power and business continuity. Physical location of a UPS, the means of accessing its location, load-bearing capabilities and working regimes during and after installation are all better understood from on-site.
Designing, installing and operating UPS for uninterrupted power may seem complicated. It needn’t be, with support from a suitably experienced vendor and proper preparation. For a start, there’s The Power Protection Guide, written by power continuity experts Robin Koffler and Jason Yates of Riello UPS and published by entiveon, with its detailed information on designing and implementing secure power continuity. The next step is to enter into a consultative partnership with a reputable manufacturer and get them to site to fully understand the business continuity challenges.
About the Author
Robin Koffler is the General Manager for Riello UPS Ltd the UK subsidiary of Riello UPS (RPS S.p.A) a leading European manufacturer of Uninterruptible Power Supplies and a co-author of The Power Protection Guide(ISBN 978-0-9554428-0-3)- available from Amazon.com
|
|
Zyxel ES1100-8P Ethernet Switch - 10/100Base-TX - Power Over Ethernet ES11008P $77.89 Zyxel ES1100-8P Ethernet Switch - 10/100Base-TX - Power Over Ethernet ES11008P |
|
|
Transition Networks MIL-SM24TAF4GP Ethernet Switch - 10/100/1000Base-T - Power Over Ethernet MILSM24TAF4GPANA $745.27 Transition Networks MIL-SM24TAF4GP Ethernet Switch - 10/100/1000Base-T - Power Over Ethernet MILSM24TAF4GPANA |
|
|
Comtrol RocketLinx ES7105 Ethernet Switch - 10/100Base-TX - Power Over Ethernet 320456 $198.25 Comtrol RocketLinx ES7105 Ethernet Switch - 10/100Base-TX - Power Over Ethernet 320456 |
|
|
Transition Networks Ethernet Switch - 10/100/1000Base-T - Power Over Ethernet SISTP1010380LRT $529.59 Transition Networks Ethernet Switch - 10/100/1000Base-T - Power Over Ethernet SISTP1010380LRT |
|
|
IC Intracom / Power Over Ethernet Injector / 524179 $41.47 IC Intracom - Power Over Ethernet Injector - 524179 |
|
|
Startech.com / POWER OVER ETHERNET MEDIA / MCM110SC2P $139.66 Startech.com - POWER OVER ETHERNET MEDIA - MCM110SC2P |
|
|
Sonicwall / SonicWALL Power over Ethernet Injector / 01-SSC-5544 $68.56 Sonicwall - SonicWALL Power over Ethernet Injector - 01-SSC-5544 |
|
|
4XEM / POWER OVER ETHERNET KIT FOR IP / IPCAMPOEKIT $79.18 4XEM - POWER OVER ETHERNET KIT FOR IP - IPCAMPOEKIT |
|
|
Cisco Power Over Ethernet Injector AIRPWRINJ4EQL $108.13 Cisco Power Over Ethernet Injector AIRPWRINJ4EQL |
|
|
Edgewater 8-Ports Power Over Ethernet Switch EC800POE01 $393.65 Edgewater 8-Ports Power Over Ethernet Switch EC800POE01 |
|
|
NEC 24-Ports Power Over Ethernet Switch SN8051POESWEAB $928.5 NEC 24-Ports Power Over Ethernet Switch SN8051POESWEAB |
|
|
EliteConnect SMCPWR-INJ4 Power over Ethernet Injector SMCPWRINJ4 $55.92 EliteConnect SMCPWR-INJ4 Power over Ethernet Injector SMCPWRINJ4 |
|
|
Edgewater 24-Ports Power Over Ethernet Switch EC2402LFPOE01 $587.45 Edgewater 24-Ports Power Over Ethernet Switch EC2402LFPOE01 |
|
|
TRENDNET TPE-104S Power over Ethernet Splitter TPE104S $24.55 TRENDNET TPE-104S Power over Ethernet Splitter TPE104S |
|
|
CyberData Power over Ethernet Injector 010867 $56.82 CyberData Power over Ethernet Injector 010867 |
|
|
4XEM IPCAMPOEINJ Power over Ethernet Injector $62.1 4XEM IPCAMPOEINJ Power over Ethernet Injector |
|
|
Motorola Power over Ethernet Injector APPSBIAS7161WW $194.96 Motorola Power over Ethernet Injector APPSBIAS7161WW |
|
|
Motorola Power over Ethernet Injector APPSBIAS2P2AFR $60.28 Motorola Power over Ethernet Injector APPSBIAS2P2AFR |
|
|
TRENDNET TPE-103I Power over Ethernet Injector TPE103I $41.07 TRENDNET TPE-103I Power over Ethernet Injector TPE103I |
|
|
Power Over Ethernet (PoE) Inje $31.8 - EnGenius Technologies Power over Ethernet (PoE) injector- Eliminate the need to place an Ethernet-enabled device, such as a wireless access point, near a power outlet- Delivers both data and electrical power to Ethernet-enabled devices using a single Et |
|
|
Ethernet $127.45 Ethernet. Computer Network, Local Area Network, Ethernet Over Twisted Pair, ARCNET, Autonegotiation, Ethernet Physical Layer, Ethernet II Framing, Fast Ethernet, Gigabit Ethernet, 10 Gigabit Ethernet, 100 Gigabit Ethernet, ALOHAnet, Broadband Internet Access, Chipcom, Chaosnet, Ethernet Automatic Protection Switching, List of Device Bandwidths, Ethernet Crossover Cable, Ethernet Way versus IEEE Way, Fully Switched Network, Green Ethernet, Media Independent Interface, Network Isolator, Power Line Communication, PHY, Power over Ethernet, Spanning Tree Protocol, Virtual LAN, WakeonLAN, 8P8C, Category 5 Cable, 10BASE2, Registered Jack, Network Segment, Metro Ethernet, TTEthernet, Avionics FullDuplex Switched Ethernet, Long Reach Ethernet, Network card, Article Sources and Contributors, Image Sources, Licenses and Contributors Author: Miller, Frederic P./ Vandome, Agnes F./ McBrewster, John Binding Type: Paperback Number of Pages: 186 Publication Date: 2009/11/03 Language: English Dimensions: 5.98 x 9.01 x 0.42 inches |
|
|
Aastra VentureIP Power Over Ethernet Adapter Power Over Ethernet Adapt $54.99 "Aastra VentureIP Power Over Ethernet Adapter Brand New Includes One Year Warranty, Item # D0023-0031-00-00 The Aastra D0023-0031-00-00 inline power adapter supplies 48v power to the 480i and VentureIP phones through the Ethernet cable, as well as optional power of Ethernet injector for networks that do not already have an 802.3af compliant in-line power supply. The D0023-0031-00-00 has multiple protocol support and built in two-port 10/100 Ethernet switch. D0023-0031-00-00 Features: Item #D0023-0031-00-00, Powers Networks That Do Not Already Have An In-Line Power Supply, Multiple Protocol Support, Built In Two-Port 10/100 Ethernet Switch, For Use With The VentureIP 480i and VentureIP Gateway" |
|
|
4XEM Power Over Ethernet Kit $75.99 1 1 Year 1 x RJ-45 Ethernet 1.42" Height x 2.17" Width x 3.35" Depth 240 V AC 48 V DC 4XEM 4XEM Corporation 50 Hz 60 Hz 90 V AC to 240 V AC 1 x Power Over Ethernet Injector 1 x Power Over Ethernet Splitter 1 x Quick Guide 1 x180cm AC Cord Video Servers Network Cameras Power Over Ethernet (POE) integrates data and power over standard Ethernet cabling. It is a way to supply reliable, uninterrupted power to network cameras in hard to access places using Category 5 cable. Power Over Ethernet technology saves the time and cost of installing separate power cabling and AC outlets for each network camera. The POE Kit consists of an Injector that connects to an Ethernet Switch or Hub and to AC Power, and a Splitter that connects to the DC Jack and RJ-45 port of the Network Camera. A Cat-5 cable runs between the Injector and Splitter to a maximum of 100 meters. One POE Kit is required per Network Camera. Ethernet IPCAMPOEKIT PoE Injector Power Over Ethernet Kit www.4xem.com |
|
|
Wasp Power over Ethernet Splitter $155.99 633808551179 Wasp Barcode Technologies Bio Clock PoE Splitter Power over Ethernet Splitter Wasp Wasp Barcode Technologies www.waspbarcode.com |
|
|
Motorola Power over Ethernet Power Injector $45.99 10/100Base-TX AP-PSBIAS-TR Motorola Motorola, Inc PoE Injector Power over Ethernet Power Injector RJ-45 10/100Base-TX www.motorola.com/us |
|
|
Cisco 2921/2951 AC Power Supply with Power Over Ethernet PWR292151POE $576.08 Cisco 2921/2951 AC Power Supply with Power Over Ethernet PWR292151POE |
|
|
Cisco AC Power Supply with Power Over Ethernet $210.99 Cisco 1941 Integrated Services Router AC AC Power Supply with Power Over Ethernet Cisco Cisco Systems, Inc PWR-1941-POE Proprietary Power Supply www.cisco.com |
|
|
SonicWALL 01SSC5545 15.4 Watt Gigabit Power over Ethernet Injector $81.8 SonicWALL Gigabit Power Over Ethernet Injector 802.3at |
|
|
Axis Power Over Ethernet Splitter $86.99 1 1 x DC Power Jack 1 x RJ-45 10/100Base-TX 5 V DC 5008-001 6.72 oz AXIS Network Cameras: 206 206M 207 IEEE 802.3af Compliant Axis Axis Communications PoE Splitter Power Over Ethernet Splitter www.axis.com |
|
|
CyberData Power over Ethernet Injector $50.99 010867 264 V AC 350 mA 47 Hz to 63 Hz 48 V DC 60 A @ 230 V AC 90 V AC to 264 V AC EMS: EN61000-4-2, -3, -4, -5, -6, -11 EMI: FCC Class B CISPR22 level B Safety: UL 60950-1 LPS CSA C22.2 No. 60950-1 TUV EN60950-1 This Power Injector eliminates the need for a PoE enabled hub. In a typical installation, the Power Injector is connected between a non-PoE hub and a CyberData paging device, providing inline power capability to an Ethernet Cat 5 cable. CyberData CyberData Corporation Ethernet PoE Injector Power over Ethernet Injector RJ-45 Ethernet www.cyberdata.net |
|
|
Power over Ethernet Injector - power injector $59.99 4XEM Power over Ethernet Injector - Power injector - 1 output connector(s) - for 4XEM EPOEMS12 12 Port MidSpan POE Switch IP Network Camera W45 |
|
|
Cisco Power over Ethernet Injector $97.99 100 V AC to 110 V AC 100 V AC to 240 V AC 110 V AC 220 V AC 50 Hz 60 Hz Cisco Aironet 1250 Series Access Points AIR-PWRINJ4 Cisco Cisco Systems, Inc PoE Injector Power over Ethernet Injector www.cisco.com |
|
|
4XEM IPCAMPOEKIT Power Over Ethernet Kit. Each $70.65 Manufacturer: 4XEM Corporation. Each. Power Over Ethernet (POE) integrates data and power over standard Ethernet cabling. It is a way to supply reliable, uninterrupted power to network cameras in hard to access places using Category 5 cable. Power Over Et |
|
|
802.3af Gigabit Power-over-Ethernet (PoE $43.46 - EnGenius 802.3af Gigabit PoE injector- Both power over ethernet and power sourcing equipment- Compliant with 802.3af PoE solution, and support Gigabit Ethernet- Offers 48V/.375A power supply with standard pin definition of Ethernet cable. Pin #1,2,3 an |
|
|
EnGenius EPE-5818AF 1-Port Power over Ethernet Injector $46.99 1 1 x RJ-45 Ethernet 3.23" x 1.81" x 0.83" 375 mA 48 V DC Wireless Access Points Web Cameras IP Phones Eliminate the need to place an Ethernet-enabled device, such as a wireless access point, near a power outlet. The EPE-5818af delivers both data and electrical power to Ethernet-enabled devices using a single Ethernet cable. EPE-5818af PoE is 802.3af compliant. It offers 48V/0.375A power supply with standard pin definition of Ethernet cable. EPE-5818AF EPE-5818AF 1-Port Power over Ethernet Injector EnGenius EnGenius Technologies, Inc Ethernet PoE Injector www.engeniustech.com |
|
|
Ipcampoeinj - 4Xem Ipcampoeinj Power Over Ethernet Injector $58.77 the Ipcampoeinj is an Ieee 802.3af Power Over Ethernet Injector That Provides DC 12v Over Ethernet Cables. The Ipcampoeinj Ieee 802.3af Power Over Ethernet Injector Inserts DC Voltage Into Cat.5 Cable, Allowing The Cable Between The Injector And Camera (ipcamw45) or Splitter (ipcampoesplit) to Transfer Data And Power Simultaneously. The Maximum Distance Between The Injector And Camera or Splitter is 100 Meters. With The Ipcampoeinj Installed, it Combines The Ethernet Digital Data With Power Over The Twisted Pair Cables as an Ieee 802.3af Power Over Ethernet Injector. And The Ieee 802.3af Power Over Ethernet Splitter Shall Separate The Digital Data And The Power Into Two Outputs. [N89781] UPC: 873791001552 UNSPC: 39121000 10.3L x 6.3W x 2H 1.5 LB |
|
|
8 Port Power over Ethernet Swi $364.64 - EdgeConnect 8 port power over Ethernet switch- Automated setup when used in conjunction with EdgeMarc and EdgeView- In-line Ethernet power (802.3af) with automatic power device detection- In-line power for many legacy (non-802.3af) IP handsets- Per port |
|
|
SonicWALL Power over Ethernet Injector $54.99 -48 V DC 01-SSC-5544 1 1 x RJ-45 10/100/1000Base-T 1.22" Height x 2.30" Width x 5.71" Depth 10/100/1000Base-T 15.40 W Minimum 15.87 oz 264 V AC 500 mA @ 110 V AC 500 mA @ 220 V AC 90 V AC to 264 V AC PoE Injector Power over Ethernet Injector RoHS SonicWALL WEEE Yes www.sonicwall.com |
|
|
Axis Power over Ethernet Splitter $98.99 0227-001 1 1 x RJ-45 1 x RJ-45 10/100Base-TX 1.30" Height x 5" Width x 3" Depth 12 V DC 32°F (0°C) to 104°F (40°C) Operating 48 V DC 6.40 oz FCC Class B certified CE TUV CISPR 22 Class B EN 60950 EN55022 IEC950 UL 1950 CSA 22.2 No. 950 Axis Axis Communications PoE Splitter Power over Ethernet Splitter www.axis.com |