Maipu MP1800X-40, Руководство по установке

Страница: 62 / 65

Appendix
MP1800X Series Router Installation Manual
E-4
copyright

2017Maipu, all rights reserved
E2 Equipment protection
This section mainly introduces the matters to be noticed for equipment lightning
protection during the installation.
E2.1 General requirements for lightning protection cable layout
Equipment cables can be divided into indoor cables and outdoor cables according to
positions of the connecting terminals. The two kinds of cable have different
requirements for cable layout in the lighting protection design.
Caution:

The communication connection cables shall be cabled indoors as far as possible, to
effectively reduce the rate of equipment damage caused by induction lightning
strike. Ethernet cables are indoor signal connection cable, and normally shall not be
cabled overhead outdoors or along the cornice.
General requirements for indoor cable layout

During cable installation, the cabling shall be conducted by category, and bundling
of cables of different categories shall be avoided.

It is suggested that cables are bundled with one cable tie every other 100mm, to
strengthen the management and fixation.

Ground cables shall be as short and thick as possible. Connection of ground cable
and ground bar shall be tightened with screw and conducted anticorrosion
treatment.
General requirements for outdoor cable layout

Outdoor cables shall be buried and laid underground (led indoors from
underground) if the actual conditions cannot fully meet the indoor cabling
requirements.

If not all outdoor cables can be buried and laid underground, the aerial cables shall
be put in metal tubes in the place 15m in front of the room, with both ends of metal
tubes grounded; after cables enter the room, the corresponding interface of
equipment shall be added the signal lightning arrester.

If shielded cables are used, the shield layer shall be made sure to have good
contact with the equipment metal housing at the equipment interface position; after
cables enter the room, the corresponding interface of equipment shall be added
the signal lightning arrester.