Alcatel-Lucent 9500 MXC, Руководство пользователя

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9500 MXC User Manual
3DB 23063 ADAA - Rev 004 July 2007 Vol. III-2-21
Cable Grounding
Ground kits are included in the ODU Cable Kits.
For tower/mast installations the ODU cable must be grounded at:
• The point where it comes on to the tower from the ODU
• The point where it leaves the tower to go to the equipment building
• Not more than 25 m (80 ft) intervals on the tower if the height on the tower
exceeds 50 m (165 ft)
• A point just prior to building entry. If the building-end lightning surge
suppressor is installed prior to the cable entering the building, the ground kit
must be installed on the tower side of the suppressor. Refer to Figure 2-18 on
page 2-28.
Figure 2-14 on page 2-22 shows typical tower locations for cable grounding and
lightning surge suppressors.Note that an external suppressor is shown at the
ODU end.
• An internal suppressor will be phased into production of ODU 300hp during
2007. An internal suppressor will not be installed in ODU 300ep. Refer to
Installing Lightning Surge Suppressors on page 2-23.
• For an ODU fitted with an internal surge suppressor, an ODU ground wire is
required.
At non-standard installations, such as building tops or the sides of buildings,
follow the same general guidelines but where proper grounding points are not
provided these must first be installed.
For ground kit installation instructions refer to the guide provided with each kit.