Installing network components in cabinets
3.3 Guidelines for setting up networked automation systems in buildings
Passive network components
System Manual, 02/2013, C79000-G8976-C282-01
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Measures for mechanical protection
The following measures are recommended to protect bus cables from physical damage:
●
When cable cannot be installed on a cable rack or similar construction, it should be
installed in a conduit (for example PG 11-16)
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In areas where the cable is subject to mechanical stress, install the cable in a heavy-
gauge aluminum conduit or in a heavy-gauge plastic conduit (see Figure 1–5)
●
When 90° bends are necessary and at the junctions between buildings (for example
expansion joints), a break in the conduit is acceptable only when there is no likelihood of
damage to the cable, for example due to falling objects (see Figure 1–6).
●
In areas where the cable is likely to be walked on or driven over in buildings or in
machines, install the cable in a closed heavy-gauge aluminum or steel conduit or in a
metal cable gutter.
Figure 3-1
Mechanical protection of the bus cable
Figure 3-2
Interrupting the conduit at an expansion joint
