2
Preparations Before Installation
2.1
Safety Precautions
To avoid the harms caused to human and device, please carefully read the safety
precautions given in this manual before installing RG-AP620-H.
Note
The following safety precautions can't cover all possible hazardous
conditions.
2.2
Grounding and Lightning
Protection
1. Grounding body
The grounding body shall adopt hot-galvanized flat steel (or copper), with dimension
no
less
than
40mm*4mm.
The
vertical
grounding
body
shall
adopt
50mm*50mm*5mm (minimum) hot galvanized angle bar with length reaching 2.5m; in
case steel tube is used, the wall thickness must reach at least 3.5mm.
2. Ground lead
The ground lead shall adopt 40mm * 4mm or 50mm * 5mm hot-galvanized flat steel
with length no exceeding 30m.
3. Grounding bus bar
The grounding bus bar shall be generally copper bar with cross-sectional area no
less than 160mm2. The vertical grounding trunk for high-rise buildings shall adopt
copper bar with cross-sectional area no less than 300mm2.
4. If the distance between the grounding bus bar of respective floors and the
connecting wire of Local Expansion Bus (LEB) of equipment room is rather short,
multi-strand copper wire with cross-sectional area being 16mm2 can be used; if the
distance is long, multi-strand copper wire with cross-sectional area no less than
35mm2 must be used.
5. The network cable shall adopt shielded cables and devices at both ends shall be
reliably grounded, while the shielding jacket of network cables shall be grounded as
possible. If network cables cannot be shielded as required, the cables can be
