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Grounding and lightning protection
Figure 2-2 Grounding cable minimum bend radius and angle
ODU requirements
The following ODU protection requirements must be implemented:
x
The ODU must be grounded to the supporting structure.
Protection requirements for a mast or tower installation
If the ODU is to be mounted on a metal tower or mast, then in addition to the general
protection requirements (above), the following requirements must be observed:
x
The equipment must be lower than the top of the tower or its lightning air
terminal.
x
The metal tower or mast must be correctly grounded.
x
A grounding kit must be installed at the first point of contact between the drop
cable and the tower, near the top.
x
A grounding kit must be installed at the bottom of the tower, near the vertical to
horizontal transition point. This grounding kit must be bonded to the tower or
tower ground bus bar (TGB), if installed.
x
If the tower is greater than 61 m (200 ft
must be installed at the tower midpoint. Additional ground kits must be installed
as necessary to reduce the distance between ground kits to 61 m (200 ft) or less.
2-14
Radius not less
than 203 mm (8 in)
Chapter 2 Planning considerations
in height, an additional grounding kit
)
phn-2182_002v000
Angle not less
than 90°
May 2011
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