Lightning Rotection For The; Switch; Protection); Installating The Lightning Arrester For Ac Power (Socket Strip With Lightning Protection) - 3Com 4800G Getting Started Manual

A
Installating the
Lightning Arrester for
AC Power (Socket
Strip with Lightning

Protection)

L
IGHTNING
S
WITCH
c
CAUTION: Lightning arrester will not be shipped with the switch. You should
purchase it by yourself if needed.
If an outdoor AC power cord should be directly led to the switch, please serially
connect the lightning arrester for AC power (Socket Strip with Lightning
Protection) before you plug AC power cord into the switch, thus to prevent the
possible damage to the switch due to lightning strike. You can use cable clips and
screws to fasten the lightning arrester for AC power on the cabinet, workbench or
the wall of equipment room.
Figure 69 Diagram of lightning arrester
Normal operation indicator (green):
On means that the arrester works normally. Otherwise, it
means that the protection circuit has been damaged.
Mainboard
c
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
P
ROTECTION FOR THE
Grounding and polarity indicator (red) :
On means that the lines are wrongly connected
(either the ground wire is not well connected, or the live and zero lines are wrongly connected).
Please check the power supply circuit.
Multipurpose power socket, connected to the device
protected by the arrester
Power switch
Power socket (complied with IEC standard),
connected to the power supply of the equipment room
through power cord
Overload auto protector,
which can be manually reset.