Ex d

Illustrated explanation

Contain an internal event and control every opening

1Ex d
Contain an internal event and control every openingCallout 1: Flameproof enclosure. Callout 2: Controlled joint path. Callout 3: Specified Ex entry. Callout 4: Unused Ex entry. A flameproof enclosure withstands a specified internal explosion and controls its joints. A cable entry and an unused-entry closure each need the permitted protection concept and mounting arrangement. Current term: Ex d, callout 1. 1Contain + prevent propagationFlameproof enclosure 2GapControlled joint path 3Protection concept + certificateSpecified Ex entry 4Approved closure arrangementUnused Ex entry
  1. Ex dThis term

    The enclosure withstands a defined internal explosion and limits transmission outside. Its entries and joints belong to that assessed assembly.

  2. Flamepath

    A specified joint allows hot gases to cool along the path. Gap, length, surface and damage limits come from the applicable equipment requirements.

  3. Explosion-proof cable gland

    Select the gland by its actual protection concept, cable construction and certificate conditions. The trade name alone does not determine suitability.

  4. Stopping plug

    The closure must suit the equipment entry and protection concept. Check the certificate, usable threads and any required seal.

A flameproof enclosure withstands a specified internal explosion and controls its joints. A cable entry and an unused-entry closure each need the permitted protection concept and mounting arrangement.

Conceptual flameproof interfaces with exaggerated joint gaps. No flamepath dimension, thread count, pressure capability or equipment certification is represented.