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Explosion proof | FAQ Schischek GmbH Explosionproof

Installation of intrinsically safe circuits

Installation (a summary):
Upon installation, the standards and regulations in force must be observed (harmonized standards, Atex 137). Intrinsically safe circuits should be separated from non IS circuits. At bare live connections (terminals) a minimum distance of 50 mm should be allowed between IS and non IS circuits. Between IS circuits the distance should be minimum 6 mm. Intrinsically safe cables and wires should be in light blue colour.

 

Installation of intrinsically safe circuits

 

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Colour Code

ATEX products for
zone 1, 2, 21, 22
(e.g. ExMax)

ATEX products for
zone 2, 22
(e.g. RedMax)

Products for
safe area
(e.g. InMax)

Offshore/Marine
Coated versions
(e.g. ..Bin..-CT / OCT)

Stainless steel versions AISI 316
(e.g. ExCos-P)