Power & Grounding - Cisco BWX 8305 Installation And Commissioning Manual

BWX 8305 Basestation Antenna Installation
When you are ready to place the antenna into position, it should be lifted using multiple lift points. Place
two non-metallic slings around the BWX 8305 Basestation Antenna, and attach the slings to the hoist,
as shown in
of the BWX 8305 Basestation Antenna. Doing so can cause damage to the radomes. Use two
ground-anchor lines attached to the lower screws of the mount to steer the BWX 8305 Basestation
Antenna and prevent it from spinning or swaying in the wind and perhaps hitting the tower or other
nearby structures with the radomes.
Figure 6-4
6.3.3 Power & Grounding
6.3.3.1 Lightning Protection
Lightning protection information is covered in
before continuing with the installation process.
6.3.3.2 Surge arrestors
There are two basic types of surge protectors (devices that block lightning surges and electrical
transients) on the RF cables - those that allow a DC current to pass through, and those that block a DC
current. The first type (allowing a DC current to pass) contains gas discharge tubes. The arrestors provide
bi-directional protection for lightning; they have no designated equipment side or line side. The other
type (blocking DC current) has a surge side and a protected side. They are unidirectional and must be
installed accordingly.
There are several companies providing surge arrestors.
BWX 2305 Basestation Installation and Commissioning Guide
6-6
Figure 6-4. Never use the radomes to lift, support, or otherwise bear partial or full weight
Lifting the BWX 8305 Basestation Antenna
Chapter 5, "Pre-installation."
Figure 6-5
Chapter 6 Installation
Please review that section
shows two examples.
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