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AP2030DN
Hardware Installation and Maintenance Guide
Item
Routing of
signal cable
Collective
ground cable
Grounding lead-
in
Issue 05 (2016-07-22)
Requirements
l Do not arrange the signal cables overhead in the equipment room.
All signal cables must be led into the site underground.
l Use the cables with a metal jacket or place them into a metal pipe if
they come out/in the equipment room.
l Ground the idle lines inside the cable in the equipment room.
l Signal cables should be deployed on internal walls. Do not deploy
outdoor aerial cables.
l Keep signal cables away from power cables and surge protection
devices.
l Use a ground ring or ground bar for the collective ground cable.
l Do not use aluminum cables as ground cables. Adopt measures to
prevent electrification corrosion when connecting different metal
parts together.
l Use a copper busbar as the collective ground cable with a cross-
sectional area of no less than 120 mm
galvanized flat steel of the same resistance. Insulate the collective
ground cable from the reinforcing steel bars of the building.
The grounding lead-in should be a maximum of 30 m (98.42 ft) long.
Use the galvanized flat steel with cross-sectional area of 40 mm x 4
mm (1.58 in. x 0.158 in.) or 50 mm x 5 mm (1.97 in. x 0.197 in.).
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5 Appendix
2
2
(0.19 in.
), or use the
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