8-2
FRAME GROUNDING
NWD-107460-02E
Installation
Cautions:
1.
Install the ODU within the area protected by lightning rod.
2.
To avoid surge currents caused by lightning circulating in the equipment
earth system, connect the equipment earth system (frame ground) to
ground of the lightning rod at ground level.
Note
Frame Ground terminal of the IDU (5 mm square cable. (means more
than 2.5 mm diameter cable (AWG #10) is recommended to apply for the
earth grounding. The proper press fix terminal tool shall be used.)
This connection is an example.
Fig. 8-2 Connection for Frame Grounding (1/2)
Earth line
Indoor earth ground terminal
IDU
ODU
Coaxial cable
Protect area
Lighting rod
Outdoor earth ground terminal
(Existing or customer supplied)
Earth line
Ground
level
Rack
3
3
(Grounding Resistance:
less than 10 ohms)
This is the buried earth wire.
This type of wire is not an insulated
winding wire and recommends to
make a naked wire.
Use a copper grounding conductor to
ground the rack.
The grounding conductor to the CO
GND be connected to the rack.
Submission Prohibited
NEC Internal Use Only