H3C CR19000-20, Installation Manual

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11-3
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Cables must be protected at points where they might rub or come in contact with sharp edges or
heated areas. Use high temperature cables near heat sources.
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Securely fasten cables and take adequate measures to prevent loose connections.
Figure11-4 Securely fastening cables
(1) Flat washer (2) Spring washer (3) Nut
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Fasten heavy or rigid power cords at the connectors to relief stress.
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Do not use tapping screws to fasten the connecting terminals.
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Bind together cables that are the same type and routed in the same direction.
Table11-1 lists the cable bundling specifications.
Table11-1 Tie-binding parameters
Cable bundle diameter (mm) Space between bundles (mm)
10 80 to 150
10 to 30 150 to 200
30 200 to 300
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Do not tie cables or bundles in a knot.
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The metal parts of the crimped cold-pressed terminal blocks (such as circuit breaker) cannot
protrude beyond the blocks.
Routing signal cables
The router provides cable management brackets along the left and right edges of the front panel and
cable management fingers at the top and bottom edges of each MPU and fabric module slot.
As a best practice, route signal cables along the nearest cable management fingers and cable
management brackets.
Routing MPU cables
The MPUs are on the left of the front panel and the ports on each MPU are close to the lower cable
management finger. As a best practice, route MPU cables first along the lower cable management
finger for the MPU slot and then through the left signal cable management bracket, as shown in
Figure11-5 .