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7.
The grounding electrode of the self-built grounding grid for the outdoor antenna of the tunnel
must meet the design requirements. The buried depth of the grounding electrode and the
welding quality of the flat iron meet the specification requirements. In principle, the buried
depth of the grounding electrode shall not be less than 0.7 m. The non-self-built grounding
network shall be connected to the grounding network of the owner.
8.
The eNB grounding, power adapter grounding, distribution box grounding and feeder
grounding must be connected to the grounding bar independently, and the grounding bar
must have a path from the lead to the earth.
3.4.5 Connect Grounding Cable
Prepare the grounding cable according to the actual measurements and requirements of the
specific installation site. The Nova430e eNB has two grounding screws located on the bottom of
the unit, as shown in Figure 3-12. Follow the steps below the figure to connect the ground cable.
NOTE: All Nova eNBs have a floating ground on the power system.
Figure 3-12: Grounding Screws
1. Unscrew one grounding screw, connect one end of the ground cable to the grounding screw,
and retighten the screw.
2. Repeat
step 1
for the second grounding screw.
3. Once the eNB is installed at the outdoor location, the other end of the ground cable needs to
connect to a good earth grounding point (Figure 3-13).
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