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09
L2 Managed Switch
Lightning Protection
3.2 Connect to Ground
Connecting the device to ground is to quickly release the lightning over-voltage and
over-current of the device, which is also a necessary measure to protect the body
from electric shock.
In different environments, the device may be grounded differently. The following
will instruct you to connect the device to the ground in two ways, connecting to
the grounding bar or connecting to the ground via the power cord. Please connect
the device to ground in the optimum way according to your specific operation
environment.
Note:
For the device without grounding terminal, please refer to the rst way Connecting to
the Ground via the Power Supply only.
Connecting to the Ground via the Power Supply
If the device is installed in the normal environment, the device can be grounded via the
PE (Protecting Earth) cable of the AC power supply as shown in the following figure.
Figure 3-4 Connecting to the Ground
Note:
The figure is to illustrate the application and principle. The power cord you get
from the package and the socket in your situation will comply with the regulation in
your country, so they may differ from the figure above.
If you intend to connect the device to the ground via the PE (Protecting Earth)
cable of AC power cord, please make sure the PE (Protecting Earth) cable in the
electrical outlet is well grounded in advance.
Connecting to the Ground via the Grounding Terminal
Use the grounding bar
If the device is installed in the Equipment Room, where a grounding bar is available,
you are recommended to connect the device to the Grounding Bar as shown in the
following figure.
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