Installing the Lightning Arrester for the Network Port 77
connected to the switch should be inserted into the arrester’s OUT end). When
you do that, observe whether the arrester indicators normally display.
n
The instruction of lightning arrester for network port contains the technical
specifications, installation and maintenance guide of the arrester. Please carefully
read it before installing the arrester.
Step 5: Use the nylon ties to bundle the cables neatly.
Figure 70 Installation diagram of lightning arrester for network port
Installation precautions
Fully consider the following items in the installation process, otherwise, the
performance of the lightning arrester for network port will be affected:
■ Lightning arrester for network port is installed in reverse direction. In practice,
the “IN” end should be connected to the outdoor network cable and the
“OUT” end to the network port on the switch.
■ Lightning arrester for the network port is not well grounded. The ground wire
for the arrester should be as short as possible, so to ensure its good contact
with the grounding screw of the switch. After the connection, use the
multimeter to confirm that.
The lightning arrester for the network port is not installed completely. If the switch
has more than one network ports to interconnect with other devices via cables
outdoor, you should install lightning arresters for all these network ports for
protection.
Switch
Network cable indoors
Power input
Network cable led into from outdoor
Lightning arrester for network port
(attached onto the chassis)
Ground wire of lightning arrester
Grounding screw of switch
Metal cabinet that contains the switch
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