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