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| H3C S9500E Routing Switch Series Installation Guide-6PW107-Appendix D Lightning Protection.pdf | 107.87 KB |
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Contents
Appendix D Lightning protection
Connecting the AC power supply to a power strip with lightning protection
Installing a lightning protector for a network port
Connecting the AC power supply to a power strip with lightning protection
If part of the AC power line is routed outdoors, use a power strip with lightning protection to connect the AC power cord of the switch to the AC power line to protect the switch from being damaged by lightning strikes.
You can attach the power strip to the rack, workbench, or wall of equipment room.
After you connect the AC power cord from the switch to a socket on the power strip, verify that the green RUN LED on the strip is on and the red LED is off.
If the red LED is on, use a multimeter to check the polarity of the wires in the power socket for wrong connections. If the zero wire (left) and the live wire (right) are correctly connected, check for missing grounding connection.
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CAUTION: Make sure the PE terminal of the power socket has been securely grounded. |
Figure 1 Power strip with lightning protection
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(1) Working LED (green) |
On means the circuit is working normally. Off means the circuit is damaged. |
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(2) Grounding/pole detection LED (red) |
On indicates a wrong wire connection (the wire is not grounded or the live line and null line are reversely connected), and you need to check the power supply line. |
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(3) Power switch |
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(4) IEC standard socket |
It is used to connect to the power supply in the equipment room through a power cord. |
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(5) Overload automatic protector |
The protector automatically opens the electric circuit when the current exceeds the threshold and closes the electric circuit when the current drops below the threshold. |
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(6) Multifunctional socket |
It is used to connect the power supply of the switch. |
Installing a lightning protector for a network port
If part of the network cable of a 10/100/1000 Mbps RJ-45 copper Ethernet port must be routed outdoors, connect a lightning protector to the cable before you plug the cable into the port.
H3C recommends that you install lightning protector for 10/100/1000 Mbps RJ-45 copper Ethernet ports.
The switch does not come with any lightning protector.
Required tools
· Phillips or flat-blade screwdriver
· Multimeter
· Tilted wire cutter
Installation procedure
To install a lightning protector:
1. Use a double-faced adhesive tape to stick the lightning protector onto the switch chassis, and make sure it is as close to the grounding screw of the switch as possible.
2. Measure the distance between the protector and the grounding screw of the switch, cut the ground wire of the protector as appropriate, and securely tighten the ground wire to the grounding screw of the switch.
3. Use the multimeter to measure whether the ground wire of the protector contacts well with the grounding screw of chassis.
4. Insert the outdoor network cable into the protector's IN end, and the cable connected to the switch into the OUT end, and look at the indicators on the lightning protector to verify that the connection is correct.
5. Use nylon ties to bundle the cables neatly.
Installation precautions
The performance of the port lightning protector may be affected in the following cases:
· The port lightning protector is installed in reverse direction. Connect the IN end to the outdoor network cable and the OUT end to the network port on the switch.
· The port lightning protector is not well grounded. After the connection, use the multimeter to confirm that the ground wire for the protector is as short as possible to ensure its good contact with the grounding screw of the switch.
· The installed port lighting protectors are not sufficient. If the switch has more than one network port connected with other devices through cables outdoor, install a lightning protector for each network port.
