
PTP 250 User Guide
Grounding and lightning protection
phn-2182_002v000
May 2011
2-15
x
In high lightning prone geographical areas, additional ground kits should be
installed at spacing between 15 to 22 m (50 to 75 ft
)
. This is especially important
on towers taller than 45 m (150 ft).
A schematic example of a mast or tower installation is shown in
Figure 2-3
.
Figure 2-3
Grounding and lightning protection on mast or tower
LPU
Tower
ground bar
External
ground bar
Master
ground bar
Ground ring
Outdoor CAT5e cable: gel-filled,
shielded with copper-plated steel
First point of contact with tower
Mid-point of tower
Bottom of tower
CAT5e cable: foil or braid screened,
with screened connectors
PoE Injector
Equipment building
Network
switch
ODU
PTP 250 ground cable
Tower/building ground system
Содержание Motorola PTP 250
Страница 20: ...List of Tables phn 2182_002v000 xiv May 2011 ...
Страница 30: ......
Страница 80: ...Data network planning Chapter 2 Planning considerations phn 2182_002v000 2 22 May 2011 ...
Страница 126: ...Notifications Chapter 4 Reference information phn 2182_002v000 4 36 May 2011 ...
Страница 192: ...Connecting link to the network Chapter 6 Configuration and alignment phn 2182_002v000 6 36 May 2011 ...
Страница 234: ...Testing the radio link Chapter 8 Troubleshooting phn 2182_002v000 8 14 May 2011 ...