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Data and Voice Conduits and Trunking Structuring

25U Rack

25U rack enclosure cabinet for 19" rackmount computer, storage, network, audio video and other systems. 25U rack XRackPro is designed to house industry standard 19 inch servers, RAID systems, switches, routers, audio, video, etc. rackmount equipment. The 25U racks from Web Technologies provides noise reduction, air filtration, security and mobility.

25U rack provides noise reduction to quiet loud computer equipment. 25U racks reduce noise of noisy servers, RAID systems, network, audio video gear and more. 25U rack can reduce the noise of rackmount equipment up to 80%.

Solidly built and providing 25U of industry standard 19" (48.2 cm) wide rackmount cabinet space, the second generation 25U are ideal server racks and computer cabinets for Apple (Xserve server and Xserve RAID, Active Storage, Promise Technology), Windows (Dell, HP, IBM, etc.), Linux, Sun, SGI and other PC computer rackmount servers and storage.

The 25U is also a great server rack solution for video, audio or any other rackmount systems that can benefit from a reduction in noise and increased mobility. Several combinations of rackmount 1U, 2U, 3U and 4U servers, disk arrays or other equipment can be mounted inside this cabinet enclosure.

Using fully adjustable mounting rails, the server racks can be configured for your individual needs. Each 1U of rackmount space is clearly marked and cables can be neatly arranged by utilizing the cable management system, making set up a breeze.

Noise from rackmount systems mounted inside the 25U server rack willbe reduced by as much as 80% from the sound dampening design while keeping everything cool at the same time. All external panels of the server rack are lined with specially engineered acoustical foam, each door opening is sealed and all wire grommets have foam inserts.

Cable capacity of conduits and trunking

Not oflly must it be possible to draw cables into completed conduit and trunking systems, but neither the cables nor their enclosures must be damaged in the process. If too many cables are packed into the space available, there will be a greater increase in temperature during operation than if they were given more space. It is important to appreciate that grouping factors still apply to cables enclosed in conduit or trunking.

Example:

The following single-core p.v.c. insulated cables are to be run in a conduit 6 m long with a double set: 8 x 1,4 x 2.5 and 2 x 6 mm². Choose a suitable size.

Cable factors (terms) for conduit and trunking
Type of conductor Conductor c.s.a. (mm²) Factor for conduit Factor for trunking pvc insulation Factor for trunking thermosetting insulation
Solid 1.0 16 3.6 3.8
Solid 1.5 22 8.0 8.6
Stranded 1.5 22 8.6 9.1
Solid 2.5 30 11.9 11.9
Stranded 2.5 30 12.6 13.9
Stranded 4.0 43 16.6 18.1
Stranded 6.0 58 21.2 22.9
Stranded 10.0 105 35.3 36.3
Stranded 16.0 145 47.8 50.3
Stranded 25.0 217 73.9 75.4

Cable factors (terms) for straight runs up to 3m.
Type of conductor Conductor c.s.a. (mm²) Cable factor
Solid 1.0 22
Solid 1.5 27
Solid 2.5 39
Stranded 1.5 31
Stranded 2.5 43
Stranded 4.0 58
Stranded 6.0 88
Stranded 10.0 146

Conduit factors (terms)
Length of run between boxes (m)
  1 2 3 4 5 6 8 10
Conduit, straight -
16mm 290 290 290 171 171 167 158 150
20mm 460 460 460 286 278 270 256 244
25mm 800 800 800 514 500 487 463 442
32mm 1400 1400 1400 900 878 857 818 783
Conduit, one bend -
16mm 188 177 167 158 150 143 130 120
20mm 303 286 270 256 244 233 213 196
25mm 543 514 487 463 442 422 388 258
32mm 947 900 857 818 783 750 692 643
Conduit, two bends -
16mm 177 158 143 130 120 111 97 86
20mm 286 256 233 213 196 182 159 141
25mm 514 463 422 388 358 333 292 260
32mm 900 818 750 692 643 600 529 474
For 38mm conduit use the 32mm factor x 1.4.
For 50mm conduit use the 32mm factor x 2.6.
For 63mm conduit use the 32mm factor x 4.2.

Trunking factors (terms)
Dimensions of trunking (mm x mm) Factor
37.5 x 50 767
50 x 50 1037
25 x 75 738
37.5 x 75 1146
50 x 75 1555
75 x 75 2371
25 x 100 993
37.5 x 100 1542
50 x 100 2091
75 x 100 3189
100 x 100 4252
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