Table of Contents
Advertisement
Connecting up
6.1 Safety when connecting up
EXPLOSION HAZARD
Do not press the reset button if there is a potentially explosive atmosphere.
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,
• Close unused cable openings for electrical connections.
• Check the cables for a tight fit after installation.
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.
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.
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.
50
WARNING
WARNING
grounding screws, etc. according to the specified torques.
WARNING
WARNING
WARNING
SCALANCE W788-x / W748-1
Operating Instructions, 03/2022, A5E03678333-17
Advertisement
Table of Contents
