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 APC 7801 Rack PDU Metered 1U 20A 120V 8 5 20S  US $225.00
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 APC AP7930 METERED RACK PDU DISTRIBUTION STRIP AP7930 US $319.99
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 APC AP7830 Metered Rack PDU Metered Zero U 20A 120 US $129.99
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 APC AP7801 Rack PDU Metered 1U 20A 120V 8 5 20 US $199.99
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 APC Metered Rack PDU AP7841 US $.99
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 AP7800 APC Metered Rack PDU Power distribution strip US $245.51
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 AP7867A APC Metered Rack PDU Zero U Power US $687.40
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 NEW APC Metered Rack 144kW 30 Outlets PDU AP7869 US $986.99
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 AP7831 APC Metered Rack PDU Zero U Power US $251.29
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APC AP7830 120V Metered Rack PDU List Price: $439.00 Sale Price: $282.58  |
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Metered Rack 1.92kVA PDU provide power distribution as well as equips on-site installers with the ability to monitor the aggregate current draw as equipment is connected to the unit. This PDU also have alarm thresholds that when exceeded alert users of potential problems... |
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Metered Rack PDU - 20A, 120V Sale Price: $395.00 |
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APC7830 Avoid overloading circuits by monitoring the aggregate power draw with metered rack PDUs. As you connect equipment to the unit, a local digital display provides visible warning when the current draw nears the strip's maximum amperage... |
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APC AP7863 Power Distribution Strip List Price: $479.00 Sale Price: $371.83 |
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Metered Rack 5.7K VA PDU that monitor the aggregate power consumption of connected equipment. This PDU provide power distribution as well as equips on-site installers with the ability to monitor the aggregate current draw as equipment is connected to the unit... |
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Rack Pdu, Metered, 1U, 20A, 120V, (8) 5-20S List Price: $624.27 Sale Price: $332.40 |
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Rack PDU, Metered, 1U, 20A, 120V, (8) 5-20. APC Metered Rack PDU , Input: 120V , Input Connections: NEMA L5-20P , Cord Length: 12 feet ( 3.66 meters ) , Output: 120V , Output Connections: NEMA 5-20R |
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APC AP7894 5.7KW 208V 20A Metered Rack PDU List Price: $720.91 Sale Price: $394.67 |
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Metered Rack 5.7k VA PDU is a power distribution units that monitor the aggregate power consumption of connected equipment with single input power source. This PDU provide power distribution as well as equips on-site installers with the ability to monitor the aggregate current draw as equipment is connected to the unit... |
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APC AP7867A Metered Rack Power Distribution Unit (0U) List Price: $1,125.00 Sale Price: $886.99 |
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The APC AP7867A Metered Rack Power Distribution Unit features a Zero-U design that doesn't take up rack space. It has one Hubbell CS8365C input connector. There are 6 IEC 320 C19 output connections for a wide range of applications... |
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Sharkrack Mc2 Sale Price: $495.00 |
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The SharkRack line of data center cabinets has for the last 15 years provided innovative solutions to over 28,000 customers around the World. All SharkRack products come with a 1 year warranty as well as our true fit guarantee that provides our racks will accommodate any standard EIA 19" server. |
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APC AP7840 Power Distribution Strip List Price: $399.99 Sale Price: $150.00 |
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Metered Rack 4.16kVA PDU provide power distribution as well as equips on-site installers with the ability to monitor the aggregate current draw as equipment is connected to the unit. This PDU also have alarm thresholds that when exceeded alert users of potential problems... |
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Rack Pdu, Metered, 1U, 15A, 100/120V, (8) 5-15S List Price: $504.00 Sale Price: $295.55 |
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Product Name: Metered Rack 15A PDUTechnical InformationInput Receptacles: NEMA 5-15POutput Receptacles: 8 x NEMA 5-15R Power DescriptionInput Voltage: 120 V AC Output Voltage: 120 V AC Current: 12A Total Current Draw Per PhaseCurrent: 12A Derated Input CurrentCurrent: 1440A Line Current Per PhaseCurrent: 15A Input Current Per PhasePhysical CharacteristicsForm Factor: 1U Rack-mountablePower Cord/Cable: 12ft Dimensions: 1... |
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APC Metered Rack PDU ZeroU - power distribution strip ( AP7832 ) List Price: $479.00 Sale Price: $370.65 |
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Metered Rack 2880VA PDU provide power distribution as well as equips on-site installers with the ability to monitor the aggregate current draw as equipment is connected to the unit. This PDU also have alarm thresholds that when exceeded alert users of potential problems... |
Apc Metered Rack
:: What is structured cabling?
Modern computer LAN (local area network) wiring has the concept of structured cabling.
With today's high speed networks, people realize that the networking system must be broken up into shorter chunks that allow workstation wiring to be concentrated, with each cable length short enough to support the high data rate.
Based on aforementioned reasons, structured wiring standard has been developed to help define a computer wiring system that stays within the maximum wiring distance for various LAN topologies. For example, the horizontal cable wiring length is 100 meters for 100BaseT networks.
:: What do we do to observe the 100 meters wiring standard?
In order to achieve the wiring concentration standard, telecommunication rooms (wiring centers) are placed at planned locations in a building. These telecom rooms are then interconnected to provide the total network connectivity for the building.
This can be explained in a three stories building. At one same corner of each floor, a telecom rooms is constructed; these telecom rooms are then connected by backbone wiring (cables run vertically through the floors and link all telecom rooms together).
On each floor, a telecom room concentrates all workstation cables for that floor. Each workstation has a wall mounted jack. The network cable is terminated at that jack and runs directly to the telecom room. The cable may run in wire trays or conduit, or be draped over supports such as a drop ceiling. For larger floors, more than one telecom room may be needed.
:: Horizontal Cabling
The horizontal wires, which run from workstations on the same floor to the telecom room, are then terminated on punchdown termination, or directly onto a patch panel. The punchdown terminations or Patch Panels could be rack mounted (19" or 23" racks), cabinet mounted or wall mounted.
In the telecom room, network equipment such as a hub or switch is connected to each station cable, which electrically terminates the cable run. The hub or switch then passes the computer signal on to other work stations or servers, or even to other telecom rooms for ultimate connectivity with the entire network.
:: Vertical Cabling (Backbone Cabling)
Telecom rooms on each floor are then connected together by backbone cabling (also called vertical cabling for floor to floor connections). These backbone cablings typically are done from floor to floor to floor.
Usually telecom rooms should be located directly above one another in order to minimize the cable runs length, but this also varies from building to building.
With the emerge of Gigabit Ethernet and 10 Gigabit Ethernet, fiber optic cable is the most appropriate choice for backbone cabling since they provide much higher bandwidth than traditional Cat5, Cat6 or even Cat7 twisted pair copper cables. Another advantage of fiber is that fibers can run much longer distance than copper cable, which makes them especially attractive for backbone cabling.
:: The difference between backbone cabling and horizontal cabling
Since backbone cabling typically passes through from floor to floor, the cables used for backbone cabling have very different requirement than the horizontal cablings.
1. Fire ratings. Backbone cables must have standard imposed fire rating specifications. Typically this is OFNR (Optical Fiber Non-Conductive Riser) rated. If the backbone cable passes through plenum area (spaces in the building used for air return in air conditioning), the cable must be OFNP (Optical Fiber Non-conductive Plenum) rated.
2. Physical securing. Physical securing for vertical riser cables is also different than horizontal cables. So is the cable strength, since vertical riser cables need to have enough strength to support its own weight.
About the Author:
Colin Yao is an expert on fiber optic networking technologies and products. Learn more about
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on Fiber Optics For Sale Co. web site.
Article Source: ArticlesBase.com - What Is Structured Cabling For Computer LAN Networks?
