QTech QSW-6900-56LF Series Hardware Installation And Reference Manual page 40

Installation Manual
8. Appendix B Lightning Protection
terminal is not grounded; if the L line is on the left and the N line is on the right, the polarity
of the arrester power cable shall be reversed by the power arrester; if the LED is still Red, it
is confirmed that the arrester PE terminal has not been grounded.
Installing the Ethernet Port Arrester
During the switch usage, the Ethernet port arrester should be connected to the switch to prevent
the switch damage by lightning before the outdoor network cable connects to the switch .
Tools: Cross or straight screwdriver, Multimeter, Diagonal pliers
Installation Steps:
1. Tear one side of the protection paper for the double-sided adhesive tape and paste the tape
to the framework of the Ethernet port arrester. Tear the other side of the protection paper
for the double-sided adhesive tape and paste the Ethernet port arrester to the switch
framework. The paste location for the Ethernet port arrester should be as close to the
grounding terminal of the switch as possible.
2. Based on the distance of the switch grounding terminal, cut the grounding line for the
Ethernet port arrester and firmly tighten the grounding line to the grounding terminal of the
switch.
3. Use the multimeter to check whether the grounding line for the arrester is in good contact
with the switch grounding terminal and the framework.
4. According to the description on the Ethernet Port Arrester Hardware Installation Guide,
connect the arrester using the adapter cable(note that the external network cable is
connected to the end of IN, while the adapter cable connected to the switch is connected to
the end of OUT) and observe whether the LED on the borad is normal or not.
5. Use the nylon button to bundle the power cables.
Figure B-2 Schematic Diagram for the Ethernet port Arrester Installation
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