Installation Manual
H3C SecPath F100-C Firewall
Chapter 2 Preparing for Installation
2-4
capacitance coupling, inductance coupling, electromagnetic wave
radiation, and common impedance (including the grounding system)
coupling. To resist the interference, make sure to:
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Take effective measures against the interference caused by
the power supply grid.
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Use a grounding system or lightning protection grounding
different from that for the power supply equipment and keep
them as far as possible.
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Keep the device far from the strong power radio launchers,
radar launchers, and high frequency and high-current
equipment.
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Use electromagnetic shielding when necessary.
2.1.5 Lightning Protection
Although the H3C SecPath F100-C takes necessary measures
against lightning, the device can get damaged when excessive
lightning is present. To protect device against lightning:
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Ensure the chassis is connected to the earth ground.
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Ensure the earth point of the power socket is well connected
to the earth ground.
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Add a lightning arrester to the front end of the power input to
better protect the power supply from lightning strikes.
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Add a special device to the input end of the signal cable
which lies in the open air for a better protection from the
lightning.
2.1.6 Checking the Installation Site
When installing the H3C SecPath F100-C, make sure that: