Chapter 12 Ex Protection Concepts
enclosures are: ingress protection to at least IP 54 and ... maximum voltage rating. • Temperature limitation • Current de‐rating of the terminals (and conductors) of 50%. The equipment of Ex terminal boxes with terminals and cable screw‐connections is subject to …
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Session 13 –Wiring Methods & Cable Standards
sourceiex.comcable bending radii. Cable racks and trays shall be closed by removable top covers, allowing adequate ventilation, in situations where: ‐mechanical damage of the cables is likely to occur during plant maintenance activities, ‐oil or chemical spillages on the trays can be expected,
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www.iecex.com* Types of protection ’c, b en k’ will not being marked on the product, because of possible user mis -interpretation with levels of protection ’c and b’. Manufacturers shall indicate Ex h only and have to define the specific used method(s) in the user installation instructions.
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