H3C S3610 Series Quick Start Manual page 80

Quick Start Chapter 4 Lightning Protection of
H3C S3610 Series Ethernet Switches the Switch
Caution:
Make sure that the arrester is well grounded before using the lightning
arrester for power.
After inserting AC power cord plug of switch into the socket of lightning
arrester, if the green LED is on and the red LED does not alarm, it
means that the lightning arrester of power is running and the function
of lightning protection has taken effect.
Pay adequate attention if the red LED is on. You should correctly
locate the problem, whether it is caused because the ground wire of
the arrester is not well grounded or because the live and zero wires
are connected in reverse direction. You may check that in the
following way. When the red LED is on, use a multimeter to examine
polarity at the power socket of the arrester. If it is same to that of the
power socket in the equipment room, it means that arrester is not well
grounded. If it is adverse to that of the power socket in the equipment
room, it means that the power socket of the arrester is set to the
reverse polarity. In this case, you should open the power socket of
arrester to correct polarity. After that, if the red LED still alarms, it
means that the arrester is not well grounded yet.
4-3