Project requirements · Application
Hazardous areas (Ex, IEC 60079-14)
Cables in explosive atmospheres suit the glands and limit flame and gas paths.
Open in the designer with this requirement
Constructions that meet it
- Extruded inner covering (bedding): changes the cable's layers. Extruded inner covering (bedding) and compact round build with non-hygroscopic fillers (extruded PVC / LSZH). Drawbacks: Needed for compound-sealed or barrier glands.
- Galvanised steel wire armour: changes the cable's layers. Armour (SWA or braid) for EPL Gb wiring (steel).
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Tests
- IEC 60079-14 (6th edition 2024: system-based cable selection): cable selection rules; older edition: compact circular cable, extruded bedding, non-hygroscopic fillers. Pass: flame propagation at least IEC 60332-1-2 (bunched IEC 60332-3 advised by Prysmian)
How specifications state it
'Suitable for Zone 1 / 2 acc. to IEC 60079-14': round, filled, extruded bedding, armour, flame retardant.
Where it is asked for
- oil and gas
- chemical plants
- mining
- grain and dust plants
Sources
- Element, 'Understanding the changes to IEC 60079-14 2024 edition' (quoted by others)
- Prysmian AU/NZ hazardous area cables brochure (quoted by others)