25
Grounding the switch by using the AC power cord
If the installation site has no grounding strips or earth ground, you ground an AC-powered switch through
the PE wire of the power cord. Make sure:
•
The power cord has a PE terminal.
•
The ground contact in the power outlet is securely connected to the ground in the power distribution
room or on the AC transformer side.
•
The power cord is securely connected to the power outlet.
NOTE:
If the ground contact in the power outlet is not connected to the ground, report the problem and reconstruct
the grounding system.
Figure 33
Grounding through the PE wire of the AC power cord
(1) Chassis rear panel
(2) Three-wire AC power cable
NOTE:
To guarantee the grounding effect, use the grounding cable provided with the switch to connect to the
grounding strip in the equipment room as long as possible.
Installing/removing a fan tray
Only the S5120-28SC-HI and S5120-52SC-HI switches support hot-swappable fan trays.
CAUTION:
Each of the S5120-28SC-HI and S5120-52SC-HI switches has only one fan tray slot for the
hot-swappable fan tray. To ensure good ventilation, follow these guidelines:
•
Do not operate the switch without a fan tray.
•
If the fan tray has problems during operation, replace it within 2 minutes while the switch is operating.
