Globalstar GSP-2800, Руководство по установке

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Ground the QGFSP
21
Step 6. Ground the QGFSP
The RAU is a metal object that is typically located high on a pole with
a full view of the sky. There is the potential for it to be hit by
lightning. Therefore, it is mandatory that you ground the RAU as
described here and in detail in Standard practices for grounding on
page 36.
To ground the QGFSP, follow these instructions carefully.
Pole Mount
If the RAU is mounted on a metal pole whose lower end is buried deep
in the ground, run the primary grounding cable directly from the
RAU and bolt it to the pole. (See Figure 15 for details.)
Grounding
Connect primary grounding cable to RAU and ground rod:
1. Secure the primary grounding cable to the RAU ground lug as
shown in Figure 15. (The ground terminal lug is shown as B on
Figure 18.)
2. Secure the primary grounding cable to ground rod using clamp
shown in Figure 16. (The clamp is shown as F on Figure 18.)
Tighten the large screws until the clamp is fastened securely to
the 8 to 10 ft. ground rod.
More information about grounding is in Standard practices for
grounding on page 36.
3. Connect the #6 ground wire to the junction box ground terminal,
shown in Figure 17. Ensure that the ground rod allows for a 0.5
meter (1.5 foot) maximum cable length between the junction box
ground terminal and point of connection to the primary ground
cable. (The point of connection is shown as D on Figure 18.)
Figure 15. Attach primary grounding cable to RAU
252AA_99
Ground
RAU cable
Telephone cable
Power supply
cable
Antenna
Radio unit
Telephone
RAU cable
RAU
(back view)
Junction
box
#6
Copper
wire
ground
(no more
than .5 m)
Ground
terminal lug
(crimped)
#2 Copper
ground wire.
Order to Length
C-type
compression
tap
8 foot ground rod
Junction
box
detail
RAU front view
M 5 screw
torque to
220 +/- 30 N-cm
(19.5 +/- 2.7 in lb)
1
2
3
6
5
4
7
8
9
0
*
#
Figure 16. Ground wire/ground rod connector
Hole for ground rod
Screw
265AA_99
Screw
Ground rod
clamp
Hole for #6 AWG wire