Introduction FLATPACK S 48V SYSTEMS WITH SMARTPACK S CONTROL AND MONITORING UNIT FOR SMALL TELECOM APPLICATIONS
Application Note Flatpack S 1U systems DOC CTOS0X01.AN3 – REV1
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Table of Contents Background ............................................................................................................................ 3 THE FLATPACK S 1U SHELF SOLUTION ......................................................................................... 3 1U2R - distribution options ......................................................................................................................................... 3 1U3R - distribution options ......................................................................................................................................... 3
Flatpack S 48V 1000W HE – key features ................................................................................... 3 Smartpack S – key features ............................................................................................................ 3 SUITABLE INDUSTRY APPLICATIONS ..................................................................................... 4 Small, Short and denSe................................................................................................................................................ 4
Microcell/Picocell Base Stations (particularly 4G/LTE) ........................................................... 4 MICROCELL ....................................................................................................................................................................... 4 PICOCELL .......................................................................................................................................................................... 4 WHY FLATPACK S .......................................................................................................................................................... 4
DAS Applications ................................................................................................................................. 5 WHY FLATPACK S .......................................................................................................................................................... 5
WiMAX/WiFi Deployments ................................................................................................................ 5 WiMAX ............................................................................................................................................................................... 5 WiFi ..................................................................................................................................................................................... 5 WHY FLATPACK S .......................................................................................................................................................... 5
Fixed Wireless Broadband................................................................................................................. 6 WHY FLATPACK S .......................................................................................................................................................... 6
FTTx......................................................................................................................................................... 6 WHY FLATPACK S .......................................................................................................................................................... 6
Backhaul—wireless, fiber, PTP, other............................................................................................ 6 WHY FLATPACK S .......................................................................................................................................................... 6
Upgrading .............................................................................................................................................. 7 Disclaimer ............................................................................................................................... 7
Eltek — Gråterudveien 8, PB 2340 Strømsø, 3003 Drammen, Norway Doc xxxxxx.AN3 – rev1
Phone: +47 32 20 32 00
Eltek © 2012 – www.eltek.com
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Background 48VDC is the most common voltage used for telecom equipment. Eltek broke new ground in 2008 with its high efficiency (up to 96.5%) Flatpack2 rectifiers. Utilizing the highly successful Flatpack2 HE technology, the Flatpack S module was developed to fill a gap in our portfolio for a small, power-dense system; no deeper than 265mm (10.4”) that can scale from small power requirements up to much larger ones (as larger systems are introduced) while meeting better cost requirements and higher efficiency than the current Minipack.
THE FLATPACK S 1U SHELF SOLUTION The initial Flatpack S systems being released are two 1U 19” shelves:
Figure 1: Flatpack S 1U2R, 2 rectifier positions
Figure 2: Flatpack S 1U3R, 3 rectifier positions
This is a 50A shelf that provides up to 2kW. AC terminations options are one single phase or individual feed.
This is a 100A shelf that provides up to 3kW using the Flatpack S 48/1000 HE, but it is designed to operate with future higher power rectifiers for even more power. AC termination options are 3 phase or individual feed:
1U2R - distribution options • •
• •
Battery dist: 2 plug-in breakers and LVBD 50A Load dist. I, MCB-drawer: 7 plug-in MCBs (max 30A), front access, rear cable entry (optional LVLD) Load dist. II, MCB: 4 plug-in MCBs (max 30A), front access, front cable entry Load dist. III, fuse: 7 fuses (max 15A), front access, front cable entry
1U3R - distribution options • •
Battery dist: 2 plug-in breakers and LVBD 100A Load dist.: 2 plug-in breakers
A 1U distribution panel can be added to increase load branches.
If only one battery breaker is required both shelves can be delivered with the spare battery breaker configured for load. Both shelves can be flush or mid mounted.
Flatpack S 48V 1000W HE – key features • • • • • •
Small ~ 6 dl, Shallow – 210 mm, Power denSe – 26 cu in per Watt 95.5% peak efficiency AC Input range: 85-300VAC (185-270 Nominal) DC Output: 53.5VDC (Adj. range: 43.5-57.6) Output power: 1000W w/ nominal input and temperatures below 45°C Voltage and power keying
Smartpack S – key features • • • • • • • •
All-in-one” hot plug-able controller Ethernet user connection + RS 232/485 Webpages, SNMPv2c, SNMPv3, e-mail of alarms and data 2.2" Graphical 32k Color TFT Display 6 configurable inputs + 6 potential free relay outputs Distributed architecture 2 LVD control Expandable functionality with CAN nodes
Eltek — Gråterudveien 8, PB 2340 Strømsø, 3003 Drammen, Norway Doc xxxxxx.AN3 – rev1
Phone: +47 32 20 32 00
Eltek © 2012 – www.eltek.com
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SUITABLE INDUSTRY APPLICATIONS The primary application of the Flatpack S 1 U shelves using Flatpack S 48/1000 HE is in telecom, converting commercial AC power to 48 Volts DC to support network equipment and charge batteries in case of a power outage. Small, Short and denSe 1U Flatpack S systems are ideal for “low power” (less than 5.43kW) applications. Along with their short depth, the systems can be used in areas with very limited space such as small enclosures or racks with few remaining RUs available. The goal for network operators is to get the most out of every inch of space, so the longer they can hold off purchasing another rack or cabinet, the more profitable they can be. 1U Flatpack S systems can be used in any of the following telecom applications:
Microcell/Picocell Base Stations (particularly 4G/LTE) MICROCELL • •
What it is: A cellular base station designed to serve a relatively small area, such as a single building or a city block. What it does: Microcells are usually used to enhance coverage in a small but important area, or to add network capacity in areas with very dense phone usage, such as stadiums. A microcell is larger than a picocell in both physical size and coverage area. PICOCELL
• •
What it is: A small cellular base station designed to serve a very small area, such as part of a building, a street corner, or an airplane cabin. What it does: Picocells are usually used to extend coverage to indoor areas where outdoor signals do not reach well, or to add network capacity in areas with very dense phone usage, such as train stations. A picocell is smaller than a microcell, both in physical size and coverage area. Picocells may combine the electronic equipment and antenna in one integrated unit. Picocells are larger than femtocells. WHY FLATPACK S
Its 1U height is the most helpful feature in these installations. Small cell applications Figure 3: Small cell enclosure typically use very small enclosures integrated with the radio, switch and power. Since with Eltek Micropack system they are going on poles, rooftops, in corners of buildings, etc., they need to be as small and lightweight as possible. Also, rectifier reliability becomes a crucial factor since small cell deployment locations would often make it difficult to access the enclosure to replace a rectifier.
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DAS Applications •
•
What it is: Unlike Microcells and picocells where the radio and antenna are built into a single unit, a distributed antenna system (DAS) uses multiple RF antenna nodes that are distributed around an area or structure and connected to a larger central base station. Also referred to as oDAS (outdoor DAS), iDAS (indoor DAS) and inbuilding wireless systems. What it does: Supports public safety communications, two-way radio communications, and commercial wireless services within an area or structure.
Figure 5: DAS application with Valere model 1RU system
Figure 4: DAS RF antenna modules supported by radio & power cabinet
WHY FLATPACK S Enclosures for DAS systems often need to be as unobtrusive as the small antennas they are supporting, so the power system must take up as little space as possible. Its compact size, reliability and flexible distribution options make the Flatpack S ideal for small-scale DAS applications.
WiMAX/WiFi Deployments WiMAX • •
What it is: WiMax is the trade name for technology related to the IEEE 802.16 wireless standards. 3,What it does: WiMax has the potential for longer range than traditional Wi-Fi (5 - 30 miles) and at high data speeds. Newer versions, such as 802.16e, add support for mobility, potentially making WiMax a competitor for certain 3G or 4G cell-phone technologies. WiFi
• •
What it is: WiFi is a WLAN (Wireless Local Area Network) technology. What it does: It primarily provides short-range wireless high-speed data connections between mobile data devices (such as laptops, PDAs or phones) and nearby Wi-Fi access points (wireless hubs connected to a wired network). Wi-Fi is generally much faster than data technologies operating over a cellular network.
Figure 6: WiMax system configuration
WHY FLATPACK S WiMAX and WiFi deployments may also employ microcell/picocell or DAS architecture which would utilize the Flatpack S benefits of size, power density, efficiency and distribution options.
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Phone: +47 32 20 32 00
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Fixed Wireless Broadband •
•
What it is: Fixed wireless is the operation of wireless devices or systems used to connect two fixed locations (e.g., buildings) with a directional radio antenna, laser bridge, or other point-to-point method. What it does: Fixed wireless systems use a terrestrial microwave platform rather than copper or optical fiber cables, so they are ideal in rural areas where it would be too expensive to lay cable, and in areas where the operator would be otherwise forced to lease service from a competitor. WHY FLATPACK S
These systems may also have space restrictions depending on their deployment location (tower-mounted, rooftop, wall, pole, h-frame) so the 1U size of the Flatpack S is critical. Some configurations may be less restrictive on space so that is where the high efficiency and power density play a greater factor. Figure 7: Example fixed wireless configuration
FTTx •
•
What it is: FTTx is a generic term meaning Fiber-to-the-whatever (home, curb, node, building prem, etc) where optical fiber replaces all or part of the copper cable in the local loop used for last mile telecommunications. What it does: Fiber-fed networks are capable of greater data speeds and communication over greater distances since they use light instead of electric signals and are immune to electromagnetic interference. WHY FLATPACK S
Since most last-mile deployments are clearly visible in neighborhoods and commercial areas, the enclosures must be small and unobtrusive. Size once again becomes a critical factor. Also, many fiber enclosures rely on less effective heat exchangers or fan systems to cool equipment. This makes the Figure 8: FTTx system configuration efficiency of the rectifiers much more important since less efficient modules put out more heat.
Backhaul—wireless, fiber, PTP, other • •
What it is: Backhaul is term which means to transmit data from the access point back to a central office or switch. What it does: All wireless networks use a wired backbone. For example, a call from your cell phone travels from the cell tower which received the call to the radio which sends the data to a backhaul device which then transmits it via copper, fiber or wireless to a central office or switch which would, in turn, relay the data through the PSTN to the call recipient. WHY FLATPACK S
Currently 70% of all backhaul is managed over copper T1, T3 lines which limit the speeds at which data can travel. Carriers are updating their backhaul equipment to obtain higher capacities which requires them to fit the equipment into existing sites.
Figure 9: Microwave backhaul cabinet installed on h-frame
Since space used at sites is expensive, the Flatpack S 1U height once again becomes a vital feature to minimize the space taken in the enclosure or rack. The power density also makes it capable of supporting most standard backhaul equipment configurations.
Eltek — Gråterudveien 8, PB 2340 Strømsø, 3003 Drammen, Norway Doc xxxxxx.AN3 – rev1
Phone: +47 32 20 32 00
Eltek © 2012 – www.eltek.com
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Upgrading As higher power capacity modules are introduced, scaling the system for larger loads becomes a much more valuable benefit. Rather than replacing a limited capacity power system, users will simply swap out rectifiers (e.g. replace 20A with 30A rectifiers) to meet the load requirements. There will, however, be opportunities to replace existing power equipment that takes up more room than the 1U Flatpack S. For example, in a fully loaded cabinet, a 2U 3kW system can be replaced by a 1U 3kW Flatpack S system, freeing up rack space for additional network gear allowing the service provider to deploy new or improved services to their customers
Disclaimer Information in this document is subject to change without notice and does not represent a commitment on the part of Eltek. No part of this document may be reproduced or transmitted in any form or by any means — electronic or mechanical, including photocopying and recording — for any purpose without the explicit written permission of Eltek. Copyright ©: Eltek, 2012
Eltek — Gråterudveien 8, PB 2340 Strømsø, 3003 Drammen, Norway Doc xxxxxx.AN3 – rev1
Phone: +47 32 20 32 00
Eltek © 2012 – www.eltek.com
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