Chapter 6 Cable Installation
f.
The cables routed in slot can be loose, but shall be kept in straight and no cross,
and the cable shall not get across the slot. The cables shall be bundled at the slot
entry/exit position and bending positions.
g.
For trunk cable, when being routed from cabinet to relay rack, do not pull the cable
too tightly and do not cut extra cable after the cable is routed. The cables placed
in slot or on floor shall be bundled separately. The cable shall be kept in straight,
no cross allowed, and keeping tidy and order after routing, no any damage on
external surface, and remain sufficient margin at required position.
h.
Labels are required during cable routing, including labels of engineering user
cable, trunk cable, fibre cable, and power cable.
The label is pasted at the
distance 2 cm from the end. Labelling content is the direction of two ends: cabinet
board socket number, belonging to two end identification
method. That is to say, identify the direction of two ends by the label at one end.
i.
The cable routing shall provide convenience for maintenance and future
expansion.
2.
Methods of laying external cable bundle
a.
The cables should be bundled orderly, clearly and neatly. Generally, they are
bundled as a group according to the category. The E1 cables, if many, shall
be further classified into different groups, and be bundled with cable ties to wire
upward or downward from the cabling areas on both sides of the cabinet.
b.
The harness should be bound with cable straps of different specifications
depending on the specific situations. Avoid using two or more cable straps jointed
together, as this will lower the binding strength.
c.
Trim the excessive part neatly from the cable straps, without sharp burrs left at the
joints. When the cables are bundled into harnesses, the cable straps should be
positioned with an even spacing three or four times of the cable harness diameter.
When a cable harness makes a turn, the bending radius should be as large as
possible to avoid breaking the inner cores due to excessive stress at the turn. The
bundling of cables is shown in
.
Figure 6-4 Binding Cables
6-5
SJ-20110531095035-004|2011-10-28 (R2.0)
ZTE Proprietary and Confidential
Summary of Contents for ZXG10 iBSC
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