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SR EN 60684-3-340 PÂNĂ LA 342[2003]:2004
Specification for flexible insulating sleeving -- Part 3: Specification requirements for individual types of sleeving -- Sheet 340 to 342: Expandable braided polyethylene terephthalate textile sleeving
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. It is constructed of polyethylene terephthalate 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 130 °C. 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 protection to circuit components such as wires, sleeves, and flat cable over which it is applied as a containing wrap or harness. Materials which conform to this specification meet established levels of performance. However, the selection of a material
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Status :
Valid
Approval date : 5/31/2004
Publish date : 6/1/2004
Number of pages : 26
ICS : 29.035.20 Plastic and rubber insulating materials
Technical Committee : 5 - Insulation materials and electrical insulation systems
- Replaces SR EN 60684-3-340 PÂNĂ LA 342[1994]:2004
- Normative reference SR ISO 1817:2000
- Normative reference SR HD 457 S1:2002
- Normative reference SR EN 60684-1:2003