Ruijie RG-RSR20-X-28 Series, Руководство по установке и справочное руководство по оборудованию

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Poor arrester grounding. The length of the grounding line should be as short as possible to ensure that it is in
good contact with the switch grounding terminal. Use the multimeter to confirm the contact condition after the
grounding.
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Incomplete arrester installation. If there is more than one port connected to the peer device on the switch, it needs
to install the arresters on all connection ports for the purpose of the lightning protection.
8 Appendix B Cabling Recommendations in Installation
When the router is installed in standard 19-inch cabinets, route cable bundles upward or downward along the sides
of the rack depending on the actual situation in the equipment room. All cable connectors should be placed at the
bottom of the cabinet rather than be exposed outside of the cabinet. Power cords should be routed upward or
downward beside the cabinet close to the location of the DC power distribution cabinet, AC power outlet, or lightning
protection box.
Required Minimum Cable Bend Radius

The minimum bend radius of a power, communication or flat cable should be 5 times the overall diameter of the
cable. If the cable is constantly bent, plugged or unplugged, the bend radius should be 7 times the overall
diameter.
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The minimum bend radius of a coaxial cable should be 7 times the overall diameter of the cable. If the cable is
constantly bent, plugged or unplugged, the bend radius should be 10 times the overall diameter.
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The minimum bend radius of a high-speed cable, such as an SFP+ cable should be 5 times the overall diameter
of the cable. If the cable is constantly bent, plugged or unplugged, the bend radius should be 10 times the overall
diameter. Required minimum fiber bend radius

The diameter of a fiber tray to hold fibers cannot be less than 25 times the diameter of the fiber.

When moving an optical fiber, the bend radius of the fiber should be equal to or greater than 20 times the diameter
of the fiber.

During cabling of an optical fiber, the bend radius of the fiber should be equal to or greater than 10 times the
diameter of the fiber.
Precautions for Cable Bundling

Before bundling cables, correctly mark labels and stick the labels to cables where appropriate.

Cables should be neatly and properly bundled, as shown in Figure D-1.
Figure D-1 Bundling Cables