Siemens SCALANCE XB-000 - Page 46

Safety notices on use in hazardous areas
General safety notices relating to protection against explosion
WARNING
EXPLOSION HAZARD
Do not connect or disconnect cables to or from the device when a 󹪞ammable or combustible
atmosphere is present.
WARNING
Unsuitable cables or connectors
Risk of explosion in hazardous areas
• Only use connectors that meet the requirements of the relevant type of protection.
• If necessary, tighten the connector screw connections, device fastening screws, grounding
screws, etc. according to the speci󹪝ed torques.
• Close unused cable openings for electrical connections.
• Check the cables for a tight 󹪝t after installation.
WARNING
Lack of equipotential bonding
If there is no equipotential bonding in hazardous areas, there is a risk of explosion due to
equalizing current or ignition sparks.
• Ensure that equipotential bonding is available for the device.
WARNING
Unprotected cable ends
There is a risk of explosion due to unprotected cable ends in hazardous areas.
• Protect unused cable ends according to IEC/EN 60079-14.
WARNING
Improper installation of shielded cables
There is a risk of explosion due to equalizing currents between the hazardous area and the non-
hazardous area.
• Ground shielded cables that cross hazardous areas at one end only.
• Lay a potential equalization conductor when grounding at both ends.
Connecting up
6.1 Safety when connecting up
SCALANCE XB-000
46 Operating Instructions, 01/2022, A2B00077300-11