H3C Technologies H3C SR6600 - Manual (Page 28)

20
Precautions
The performance of the port lightning arrester may be affected in the following cases:
• The IN and OUT ends of the port lightning arrester are connected incorrectly.
The IN end should be connected to the external cable, and the OUT end to the Ethernet port of the
router.
• The port lightning arrester is not well grounded. Make sure that the grounding cable of the port
lightning arrester should be as short as possible and be well connected to the grounding screw of
the router. Use a multimeter to check the connection between the port lightening arrester and the
grounding screw.
• The installed port lightning arresters are not sufficient. When more than one outdoor Ethernet cable
is connected to the router, install a port lightning arrester for each outdoor Ethernet cable.
Installing a power lightning arrester (lightning
protection busbar) (optional)
NOTE:
No power lightning arrester is shipped with the router unless ordered.
Before connecting an outdoor AC power supply to the router, install a lightning protection busbar at the
AC power input end and then connect the AC power cord to a lightning protection busbar to protect the
router against lightning strokes. You can use cable ties and screws to fasten the lightning protection
busbar on the rack, the workbench, or the wall in the equipment room.