General Notices On Use In Hazardous Areas According To Atex; Notices Regarding Use In Hazardous Areas According To Ul Hazloc - Siemens S7-1200 Operating Instructions Manual

3.1.2

General notices on use in hazardous areas according to ATEX

Requirements for the cabinet/enclosure
To comply with EU Directive 94/9 (ATEX95), the enclosure or cabinet must meet the
requirements of at least IP54 in compliance with EN 60529.
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.
Take measures to prevent transient voltage surges of more than 40% of the rated voltage.
This is the case if you only operate devices with SELV (safety extra-low voltage).
3.1.3

Notices regarding use in hazardous areas according to UL HazLoc

EXPLOSION HAZARD
DO NOT DISCONNECT WHILE CIRCUIT IS LIVE UNLESS AREA IS KNOWN TO BE
NON-HAZARDOUS.
This equipment is suitable for use in Class I, Division 2, Groups A, B, C and D or non-
hazardous locations only.
This equipment is suitable for use in Class I, Zone 2, Group IIC or non-hazardous locations
only.
CP 1243-7 LTE
Operating Instructions, 01/2015, C79000-G8976-C381-01
WARNING
WARNING
WARNING
WARNING
Installation, connecting up, commissioning
3.1 Important notes on using the device
35