H3C Technologies H3C SR6600 - Manual (Page 29)

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Figure 22 Install a power lightning arrester
1 2
3
4
5
6
N N N N L L L L
(1) Status LED—On means the lightning protection functions properly. Off means the lightning protection has
failed.
(2) Grounding and polarity detection LED (red)—On means the grounding cable is not well connected or the
live and zero wires are connected reversely. Check the power supply line.
(3) Power switch
(4) IEC-compliant power receptacle—Connects to the power source in the equipment room
(5) Overload protector—Resets the lightning arrester
(6) Multi-purpose power receptacle—Connects to the power supply of the router
Note the following guidelines when installing a power lightning arrester:
1. Make sure that the protection wire (PE) terminal of the power lightning arrester is well grounded
before using it.
2. After the AC power cord of the router is plugged into the multi-purpose socket of the power
lightning arrester (lightning protection busbar), if the green LED is ON and the red LED is OFF, the
lightning protection can function properly.
3. If the red LED is ON, check whether the grounding cable is not well connected or the live and zero
wires are connected reversely. You can use a multimeter to examine the polarity at the
multi-purpose socket of the power lightning arrester.
• If the live and zero wires are on the left and right respectively (supposing that you are facing the
socket), the PE terminal of the power lightning arrester is not grounded.
• If the live and zero wires are on the right and left respectively (supposing that you are facing the
power receptacle), the polarity of the power receptacle of the power lightning arrester is reversed.
In this case, open the power receptacle to correct the polarity. If the red LED is still ON, you can be
sure that the PE terminal of the power lightning arrester is not grounded.