RO
SR EN 60684-3-343 PÂNĂ LA 345[2002]:2004
Flexible insulating sleeving -- Part 3: Specifications for individual types of sleeving -- Sheets 343 to 345: Expandable braided ethylene chlorotrifluoroethylene (E-CTFE) textile sleeving, uncoated
Gives the requirements for sleeving having the property of expanding its internal diameter when compressed longitudinally and thereafter returning to its initial diameter after release of the compressing force. This expandable braided textile sleeving, uncoated, is constructed of ethylene chlorotrifluoroethylene (E-CTFE) monofilament yarns suitably processed to provide the mechanical ability to conform in the manner described above. These sleevings have been found suitable for use at temperatures up to 155 °C. This sleeving is normally supplied in internal diameters between 6 mm and 63 mm and in three levels of wall thickness (thin (sheet 343), medium (sheet 344), and thick (sheet 345)). Because of its open construction, this sleeving is normally used to provide air-space insulation. Therefore, no requirement for breakdown voltage is specified in this standard. (Any value for this property should be given in the purchase contract, but a typical value is 1,5 kV/mm wall thickness, although a linear relationship cannot be assumed.) However, it serves to provide mechanical protec
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Status :
Valid
Approval date : 5/31/2004
Publish date : 6/1/2004
Number of pages : 24
ICS : 29.035.20 Plastic and rubber insulating materials
Technical Committee : 5 - Insulation materials and electrical insulation systems
- Replaces SR EN 60684-3-343 PÂNĂ LA 345[1994]:2004
- Normative reference SR EN 60684-2:2003
- Normative reference SR ISO 1817:2000
- Normative reference SR HD 457 S1:2002
- Normative reference SR EN 60684-1:2003