H3C Technologies H3C WX5000 Series Access Controllers - Manual (Page 72)

A-2
Technical parameters, installation and maintenance methods of an arrester have been given in the
arrester instruction. Read the instruction carefully before installing the lightning arrester for the network
interface.
Step5 Tie the cables together with nylon clips.
Figure A-1 Installation of a lightning arrester for network interface
Precautions
To ensure performance of the lightning arrester for network interface during installation, observe the
following rules:
z Properly connect the lightning arrester for network interface, with IN connecting to the lightning
arrester while OUT connecting to the network interface of the access controller.
z Correctly ground the lightning arrester. When connecting the ground cable, make sure that the
ground cable is of a proper length and has a good touch with the grounding screw of the access
controller. Check the ground cable with a multimeter after connection.
z Install adequate lightning arresters for network interfaces. When there are more than one network
interface connecting to outdoor cables, you should install a lightning arrester for each of the
network interfaces to guard the interfaces against possible damages.