NEC ipasolink 400 - Grounding in the Shelter; Suitable Grounding Connectors; Idu and Cable Labelling; Overvoltage Protection

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Grounding wires should be installed as straightforward as possible, avoiding bends and loops
GROUNDING IN THE SHELTER
Grounding of the lower end of the ODU cable should be done at the connection between the ½-inch cable
and the tail cable as close as possible to the wall feed-through point to the nearest grounding bar or wire
using as short 16 mm2 Cu cable as possible. The length of the tail cable should be suitable so that the
grounding point is close to the outer wall.
The indoor unit should be grounded using the grounding connector of the modem to the grounding bar of
the rack. Note that grounding using the rack screws is not reliable as the rack maybe painted using non-
conducting paint. The rack grounding bar should be connected to the shelter grounding bus. All grounding
wires should be as short as possible without any unnecessary bends or loops. If the grounding wire is too
long, it has to be cut to suitable length. Coiling the extra length of wire is equivalent to leaving the
grounding wire disconnected due to the inductance seen by lightning currents.
SUITABLE GROUNDING CONNECTORS
Tyco Electronics connecotr types:
 C-LOK 1-83016-0 Cu16-Cu16
 C-LOK 0-81713-3 Cu16-Cu50 or 3/8" grounding rod
 C-LOK 0-83713-1 Cu16-1/2" grounding rod
 C-LOK 0-81663-1 Cu16-Fe 7*1.20 tai 7*1.57 steel wire
 C-LOK 0-81663-6 Cu16-Fe 7*2.12 25mm
2
steel guy wire
 C-LOK 0-81663-5 Cu16-Fe 7*2.44 35mm
2
steel guy wire
Ensto C-connector (crimp connector)
 SE 36 Cu 16...25mm
2
- Cu 16...25mm
2
Ensto connector with a tightening nut
 SE 12.1 10...70 mm
2
- 10...70 mm
2
IDU AND CABLE LABELL ING
Labelling should follow operator’s instructions.
OVERVOLTAGE PROTECTION
There is no requirement to install any overvoltage protection devices to the IDU/ODU cable. Proper
grounding should ensure that excessive potential differences do not occur.