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Siemens Simatic S7-400 - Notes on Use in Hazardous Areas According to ATEX; Iecex; Notes on Use in Hazardous Areas According to UL Hazloc

Siemens Simatic S7-400
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Installation, connecting up, commissioning
3.1 Important notes on using the device
CP 443-1 OPC UA
Operating Instructions, 01/2017, C79000-G8976-C427-02
31
3.1.3
Notes on use in hazardous areas according to ATEX / IECEx
WARNING
Requirements for the cabinet
To comply with EC Directive 94/9 (ATEX95) or the conditions of IECEx, this enclosure or
cabinet must meet the requirements of at least IP54 in compliance with EN 60529.
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.
WARNING
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).
3.1.4
Notes on use in hazardous areas according to UL HazLoc
WARNING
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.

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