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CompEx `e` - Increased Safety

CompEx type of protection `e` is a type of protection in which additional measures are applied in order to give increased protection against the possibility of excessive temperatures, and against the possibility of the occurrence of arcs and sparks in normal conditions or under specified fault conditions.

Areas of usage:

- Zone 1 or Category 2 or EPL Gb
- Zone 2 or Category 2 or EPL GC
- All gas groups.

Ingress protection

CompEx type of protection `e` requires IP54 as a minimum.

Terminations

Type of protection `e` requires the use of certified terminals in every case. The following rules apply:
- One conductor per terminal.
- Wires must be crimped.
- Soldering is not allowed.
- 50mm separation between `normal` and `IS (intrinsically safe)` terminals.
- All (even unused) terminals must be tight.

Accessories

Accessories Required type
Glands Certified glands only:
  • Ex `d`
  • Ex `d` barrier
  • Ex `de`
  • Ex `e`
Blanks Certified blanks only:
  • Ex `d`
  • Ex `de`
  • Ex `e`
IP washer
  • Clearance entry - required
  • Threaded entry less than 6mm thread - required
  • Threaded entry more than 6mm thread - not required
Serrated washer Required on painted surfaces
Locknut
  • Clearance entry - required
  • Threaded entry less than 6mm thread - required
  • Threaded entry more than 6mm thread - not required
  • Plastic enclosures - required
Earth tag Required on plastic enclosures without earth continuity plates




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