Project requirements · Environment
Low temperature (bending, impact, installation)
The insulation and sheath do not crack when bent or struck in the cold, and the cable can be installed at a stated minimum temperature.
Open in the designer with this requirement
Constructions that meet it
- Cold-flexible sheath compound: changes no layer: a property of the sheath compound. Cold-flexible sheath compound (special PVC, PE, PUR, cross-linked polyolefin or rubber) (cold-grade compound). Drawbacks: Lapp ÖLFLEX ROBUST FD: -40 °C flexible, -50 °C fixed. Arctic PVC grades cost more.
- Cold-flexible insulation (EPR, XLPE): changes no layer: a property of the insulation compound. Cold-flexible insulation (EPR, XLPE rather than PVC) (EPR / XLPE). Drawbacks: PVC insulation is the weak point at low temperature (typical).
Writing a tender? Pro writes this requirement into your specification, ready to copy. Open in the designer with this requirement · See Pro
Tests
- IEC 60811-504:2012: bending test at low temperature for insulations and sheaths. Pass: no cracks; temperature set by the specification
- IEC 60811-506:2012: impact test at low temperature for insulations and sheaths. Pass: no cracks; temperature set by the specification
- EN 50618 Annex C: cold impact at -40 °C (EN 60811-506). Pass: no cracks
- CSA (cold bend and cold impact): mandrel wrap; 1.36 kg dropped from 0.91 m at the test temperature. Pass: a cable marked -40 °C passes both at -40 °C (Texcan)
How specifications state it
Specified as a minimum installation temperature and a minimum service temperature, proven by IEC 60811-504/-506 (or CSA) at that temperature.
Where it is asked for
- arctic and Nordic projects
- LNG plants
- outdoor installations in winter
- wind turbines (cold climate)
- Canada (-40 °C marking)
Sources
- EVS-EN 60811-504:2012 and EVS-EN 60811-506:2012 listings (quoted by others)
- Lapp H1Z2Z2-K datasheet (cold impact -40 °C, EN 60811-506, EN 50618 Annex C; min. installation -25 °C) (maker's catalogue)
- Texcan, 'Understanding cable low temperature ratings' (CSA cold bend and impact) (quoted by others)
- Lapp ÖLFLEX ROBUST FD DB0026501EN (-40 °C flexible, -50 °C fixed) (maker's catalogue)
- Datwyler (N)HXCH FE180 E90 datasheet (installation -5 to +50 °C, operation -45 to +90 °C) (maker's catalogue)