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IEVref:426-07-01ID:
Language:enStatus: Standard
Term: powder filling "q"
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Definition: Type of Protection in which the parts capable of igniting an explosive gas atmosphere are fixed in position and completely surrounded by filling material to prevent the ignition of an external explosive gas atmosphere

Note 1 to entry: This Type of Protection cannot prevent the surrounding explosive gas atmosphere from penetrating into the equipment and components and being ignited by the circuits. However, due to the small free volumes in the filling material and due to the quenching of a flame that can propagate through the paths in the filling material, an external explosion is prevented.


Publication date:2020-03
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