Important Notes On Using The Device In Hazardous Areas - Siemens SCALANCE X-300EEC Compact Operating Instructions

Safety notices on use in hazardous areas according to ATEX and IECEx
Requirements for the cabinet/enclosure
To comply with EC Directive 94/9 (ATEX95) or the conditions of IECEx, 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 Auto-Hotspot, section "Explosion Protection
Directive (ATEX)").
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.
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.
2.2

Important notes on using the device in hazardous areas

WARNING - EXPLOSION HAZARD -
DO NOT DISCONNECT WHILE CIRCUIT IS LIVE UNLESS AREA IS KNOWN TO BE
NON-HAZARDOUS.
Restricted area of application
This equipment is suitable for use in Class I, Division 2, Groups A, B, C and D or non-
hazardous locations only.
SCALANCE X-300EEC
Compact Operating Instructions, 11/2015, A5E02630809-09
WARNING
WARNING
WARNING
WARNING
WARNING
2.2 Important notes on using the device in hazardous areas
Safety notes
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