Skystream Owner’s Manual
3-CMLT-1054 Rev O XCO 1191
Pg. 46
Appendix C: Lightning Protection
Important Safety Instructions ........................................................................................................... 46
Introduction
.................................................................................................................................... 47
Location of Lightning Current Arrestor(s) ......................................................................................... 47
Selecting Appropriate Lightning Protection System .......................................................................... 47
Determine Tower Height .................................................................................................................. 48
Determine Flash Density (Ng) .......................................................................................................... 48
Table 1
Lightning Protection Efficiency for 33 ft (10 m) Towers ...................................................... 48
Determine the Topography .............................................................................................................. 49
Permitted Annual Number of Critical Events (Nc) ............................................................................. 49
Table 2
Lightning Protection Efficiency for 45 ft (14 m) Towers ...................................................... 49
Table 3
Lightning Protection Efficiency for 60 ft (18 m) Tower ........................................................ 50
Lightning Protection System Efficiency (E) ....................................................................................... 50
Table 4
Lightning Protection Efficiency for 70 ft (21 m) Towers ...................................................... 51
Lightning Protection Level ................................................................................................................ 51
Table 5
Lightning Protection Level ................................................................................................. 51
Table 6
Type 1 Lightning Current Arrestor Recommendations: One Pole Versions (spark-gap
technology) ........................................................................................................................ 52
Important Safety Instructions
Read these instructions in their entirety before installing.
In this guide
TIP:
Helpful information to ease the installation
Professional installation
highly recommended
Warning:
Risk of injury or death - proceed with
extreme caution
Professional installation
highly recommended
1)
SAVE THESE INSTRUCTIONS. This manual contains important instructions for grounding your
Skystream tower.
2)
Read these instructions in their entirety before beginning.
3)
Do not start installation unless all required equipment and tools are on site.
