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 A-1 Diagram
of lightning arrester
Caution:
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Make sure that the arrester is well grounded
before using the lightning arrester for power.
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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.
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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 th 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.
Lightning arrester
for network port is specially designed for the Ethernet port of 10/100M
electrical interface (RJ-45 connector is adopted in this case).
Caution:
Lightning arrester
for network port will not be provided along with the switch, and you should
purchase it by yourself if needed.
If an outdoor network cable should be led to
the switch, please serially connect the lightning arrester for network port
before you plug this cable into the interface on the switch, in case of the
possibility that the switch may be damaged due to lightning strike.
I. Required tools
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Phillips screwdriver or Flat-blade screwdriver
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Multimeter
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Tilted wire cutter
II. Installation procedure
Step 1: Tear the protection paper at one
side of the double faced adhesive tape apart from the tape, and stick the tape
on the surface of the arrester. Tear the protection paper at another side apart
from the tape, and stick the arrester onto the chassis of the switch. The
arrester should be attached on the chassis as close to the grounding screw as
possible.
Step 2: According to the distance to the
grounding screw of the switch, cut the ground wire of the arrester, and
securely tightening its ground wire to the grounding screw of the switch.
Step 3: Use the multimeter to measure
whether the ground wire of the arrester contacts well with the grounding screw
of chassis.
Step 4: According to the instruction of
arrester for network port, connect the arrester with switch by the cables (be
carefully with the cable direction. Outdoor network cable should be inserted
into the arrester‘s IN end, and the cable connected to the switch should
be inserted into the arrester’s OUT end). When you do that, observe
whether the arrester indicators normally display.
The instruction of
lightning arrester for network port contains the technical specifications,
installation and maintenance guide of the arrester. Please carefully read it
before installing the arrester.
Step 5: Use the nylon ties to bundle the
cables neatly.
Figure A-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:
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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.
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Lightning arrester for the network port is not
well grounded. The ground wire 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.
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.
