Installation Manual
H3C S7500 Series Ethernet Switches
Appendix C Lightning Protection
C-4
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
Figure C-2
Installation diagram of lightning arrester for network port
III. 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 grounding cable
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.