Installation Manual
8. Appendix B Lightning Protection
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8
APPENDIX B LIGHTNING PROTECTION
Installing AC Power Arrester (lightning protection cable row)
The external lightning protection cable row should be used on the AC power port to prevent the
switch from being struck by lightning when the AC power cable is introduced from the outdoor
and directly connected to the power port of the switch. The lightning protection cable row is
fixed on the cabinet, operating table or the wall in the machine room using the line buttons and
screws. AC enters the lightening protection cable row and then gets to the switch.
Figure B-1 Schematic Diagram for the Power Arrester
The power arrester is not provided and the user should purchase it to address the practical
requirement.
Precautions for installation:
❖
Make sure that the PE terminal of the power arrester has been well-grounded;
❖
After the switch AC power plug is connected to the socket of the power arrester (lightning
protection cable row), lightning protection function implements if the RUN LED is Green and
the ALARM LED is OFF.
❖
If the ALARM LED on the power arrester is Red, you should check whether it is caused by
poor grounding connection or by the reversed connection of the Null and Live lines: Use the
multimeter to check the polarity of the power socket for the arrester when the LED is Red, if
the N line is on the left and the L line is on the right (facing the socket), the arrester PE
