Rack Or Workbench Requirements; Emi; Lightning Protection - H3C SR6602-I Installation Manual

Figure2-1 Airflow through the chassis

Rack or workbench requirements

•
Make sure the rack or workbench is sturdy enough to support the total weight of the device and
its accessories. For more information about the device weight, see H3C SR6602-I[IE] AI Series
ICT Converged Gateways Hardware Information and Specifications.
•
Make sure the dimensions of the rack or workbench meet the requirements.
•
Make sure the rack or workbench is reliably grounded.

EMI

All electromagnetic interference (EMI) sources, from outside or inside of the device and application
system, adversely affect the device in the following ways:
•
A conduction pattern of capacitance coupling.
•
Inductance coupling.
•
Electromagnetic wave radiation.
•
Common impedance (including the grounding system) coupling.
To prevent EMI, use the following guidelines:
•
If AC power is used, use a single-phase three-wire power receptacle with protection earth (PE)
to filter interference from the power grid.
•
Keep the device far away from radio transmitting stations, radar stations, and high-frequency
devices.
•
Use electromagnetic shielding, for example, shielded interface cables, when necessary.

Lightning protection

To protect the device from lightning better, do as follows:
•
Make sure the installation site, power supply system, and the device are reliably grounded.
•
Install a lightning arrester at the input end of the power supply to enhance the lightning
protection capability of the power supply.
•
To prevent signal ports from getting damaged by overvoltage or overcurrent caused by lightning
strikes, route interface cables only indoors. If part of the network cable of an Ethernet port must
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