Lightning Protection; Rain Proofing - Alvarion BreezeNET PRO.11 Series User Manual

Planning and Installing Wireless LANS

5.5.3 Lightning Protection

Lightning protection is designed to protect people, property and equipment by
providing a path to ground for the lightning's energy. The lightning arrestor diverts
the strike energy to ground through a deliberate and controlled path instead of
allowing it to choose a random path. Lightning protection for a building is more
forgiving than protection of electronic devices. A building can withstand up to
100,000 volts, but electronic equipment may be damaged by just a few volts.
Lightning protection entails connecting an antenna discharge unit (also called an
arrestor) to each cable as close as possible to the point where it enters the building.
It also entails proper grounding of the arrestors and of the antenna mast (if the
antenna is connected to one).
The lightning arrestor should be installed and grounded at the point where the cable
enters the building. The arrestor is connected to the unit at one end and to the
antenna at the other end.
The professional installer you choose must be knowledgeable about lightning
protection. The installer must install the lightning protector in a way that maximizes
lightning protection. BreezeCOM offers the following high-quality lightning
arrestor assembly:
BreezeNET AL 1 Lightning Arrestor - Part No. 872905 5 ft (1.5m), "N" Male to
"N" Female.

5.5.4 Rain Proofing

12, 18, and 24 dBi antennas must be sealed against rain at the point the cable enters
the pole before they are suitable for external use.
User's Guide
5-34
BreezeNET PRO.11 Series