Specifications

SCALANCE X-400 BA
Operating Instructions, 03/2009, C79000-G8976-C186-07
9
Safety instructions
2
2.1 ATEX safety instructions
ATEX safety instructions
The ATEX safety instructions must be adhered to during any work on the product (for
example installation, connecting up).
Below, you will see the original texts for ATEX and FM.
Requirements for the cabinet/enclosure
WARNING
When used in hazardous environments corresponding to Class I, Division 2 or Class I,
Zone 2, the device must be installed in a cabinet or a suitable enclosure.
To comply with EU Directive 94/9 (ATEX95), this enclosure must meet the requirements of
at least IP54 in compliance with EN 60529.
Suitable cables for temperatures in excess of 70 °C
WARNING
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.
Protection against transient voltage surges
WARNING
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.