Safety instructions
SCALANCE X-300
Operating Instructions, 02/2012, A5E01113043-12
15
Notices for use in hazardous areas according to ATEX
WARNING
Requirements for the cabinet/enclosure
To comply with EU Directive 94/9 (ATEX95), this enclosure must meet the requirements of
at least IP54 in compliance with EN 60529.
The fiber-optic bus connections labeled SCALANCE MM900 (see type plate) may also be
led through a hazardous area zone1 (see also MM900 approvals, certificates (Page 263),
se
ction "Explosion Protection Directive (ATEX)").
WARNING
Suitable cables for temperatures in excess of 70 °C
If the cable or conduit entry point exceeds 70°C or the branching point of conductors
exceeds 80°C, special precautions must be taken.
If the equipment is operated in an air ambient in excess of 50 °C, only use cables with
admitted maximum operating temperature of at least 80 °C.
WARNING
Protection against transient voltage surges
Provisions shall be made to prevent the rated voltage from being exceeded by transient
voltage surges of more than 40%. This criterion is fulfilled, if supplies are derived from
SELV (Safety Extra-Low Voltage) only.
See also
MM900 approvals, certificates (Page 263)
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