5
EMI
All electromagnetic interference (EMI) sources, from either outside or inside of the switch and application
system, adversely affect the switch in a conduction pattern of capacitance coupling, inductance coupling,
electromagnetic wave radiation, or common impedance (including grounding system) coupling. To
prevent EMI, follow these guidelines:
•
Use a socket with three pins and PE wire to prevent interference from the power grid.
•
Use a grounding system and a lightning protection system for the switch separate from those for
other electric equipment, and keep them far away as possible.
•
Keep the switch 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 better protect the switch from lightning, follow these guidelines:
•
Make sure the grounding cable of the chassis is well grounded.
•
Make sure the grounding terminal of the AC power receptacle is well grounded.
•
Install a lightning protector at the input end of the power supply to enhance the lightning protection
capability of the power supply.
Accessories
Accessories are provided with the switch.
Grounding cable
M6 screw (user
supplied)
Cage nut (user
supplied)
Console cable
Rear mounting bracket
and load-bearing screw
Front mounting
bracket and M4
screws
Rubber feet
Guide rail and screws
(optional)