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QTech QSW-4700 Series User Manual

QTech QSW-4700 Series
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QSW-4700 Series Switches Hardware Installation and Reference Guide
Appendix
75
routed beside the rack, and top cabling or bottom cabling is adopted according to the actual
situation in the equipment room, such as the positions of the DC power distribution box, AC
socket, or lightning protection box.
7.3. Requirements for Cable Bend Radius
The bend radius of a fixed power cord, Ethernet cable, or flat cable should be over five
times greater than their respective diameters. The bend radius of these cables that are
often bent or plugged should be over seven times greater than their respective
diameters.
The bend radius of a fixed common coaxial cable should be over seven times greater
than its diameter. The bend radius of the common coaxial cable that is often bent or
plugged should be over 10 times greater than its diameter.
The bend radius of a fixed high-speed cable (such as SFP+ cable) should be over five
times greater than its diameter. The bend radius of the fixed high-speed cable that is
often bent or plugged should be over10 times greater than its diameter.
7.4. Requirements for Fiber Bend Radius
The diameter of a fiber tray to hold fibers should be over 25 times greater than the
diameter of the fiber.
When an optical fiber is moved, the bend radius of the fiber should be over 20 times
greater than the diameter of the fiber.
During cabling of an optical fiber, the bend radius of the fiber should be over 10 times
greater than the diameter of the fiber.
7.5. Precautions for Bundling up Cables
Before cables are bundled, mark labels and stick the labels to cables wherever
appropriate.
Cables should be neatly and properly bundled in the rack without twisting or bending.
Figure 7-6 Binding Cables (1)
Cables of different types (such as power cords, signal cables, and ground cables) should
be separated in cabling and bundling. Mixed bundling is disallowed. When they are close
to each other, it is recommended to adopt crossover cabling. In the case of parallel
cabling, maintain a minimum distance of 30 mm (1.18 in.) between power cords and
signal cables.

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QTech QSW-4700 Series Specifications

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BrandQTech
ModelQSW-4700 Series
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LanguageEnglish

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