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Safety notice for connecting with a LAN ID (Local Area Network)
A LAN or LAN segment with all the interconnected devices should be contained completely in
a single low voltage power distribution in a building. The LAN is designed either for
"Environment A" according to IEEE802.3 or "Environment 0" according to IEC TR 62102.
Do not connect any electrical connectors directly to the telephone network (telephone network
voltage) or a WAN (Wide Area Network).
Note
Protective ground
A PELV circuit contains a connection to protective ground. Without a connection to protective
ground, or in case there is a fault in the connection to the protective ground, the voltage for the
circuit is not stabilized.
Note
The temperature stability of cables connected to terminals must be at least 90 °C for power
supply, functional grounding and signaling contact, and at least 75 °C for data cables.
Safety notices on use in hazardous areas
General safety notices relating to protection against explosion
EXPLOSION HAZARD
Do not connect or disconnect cables to or from the device when a flammable or combustible
atmosphere is present.
EXPLOSION HAZARD
Do not press the SELECT/SET button when there is an explosive atmosphere.
SCALANCE XC-400
Operating Instructions, 08/2023, C79000-G8976-C694-01
WARNING
WARNING
WARNING
Connecting up
6.1 Safety when connecting up
55
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