A-3
Step 2: According to the distance to the grounding screw of the switch, cut the ground wire of the
arrester, and securely tightening its ground wire to the grounding screw of the switch.
Step 3: Use the multimeter to measure whether the ground wire of the arrester contacts well with the
grounding screw of chassis.
Step 4: According to the instruction of arrester for network port, connect the arrester with switch by the
cables (be carefully with the cable direction. Outdoor network cable should be inserted into the
arrester‘s IN end, and the cable connected to the switch should be inserted into the arrester’s OUT end).
When you do that, observe whether the arrester indicators normally display.
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 A-2
Installation diagram of lightning arrester for network port
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
Installation precautions
Fully consider the following items in the installation process, otherwise, the performance of the lightning
arrester for network port will be affected:
z
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.
z
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.
z
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.
