IEC 60317-18:2020 pdf download

IEC 60317-18:2020 pdf download.Specifications for particular types of winding wires – Part 18: Polyvinyl acetal enamelled rectangular copper wire, class 120
1 Scope
This part of IEC 60317 specifies the requirements of enamelled rectangular copper winding wires of class 120 with a sole coating based on polyvinyl acetal or polyvinyl formal resin, which can be modified provided it retains the chemical identity of the original resin and meets all specified wire requirements NOTE 1 A modified resin is a resin that has undergone a chemical change, or contains one or more additives to enhance certain performance or application characteristics. NOTE 2 Polyvinyl acetal is a general name for a family of thermoplastic vinyl resins produced by the condensation of polyvinyl alcohol with an aldehyde. Examples are polyvinyl acetal, polyvinyl formal and polyvinyl butyral. The range of nominal conductor dimensions covered by this document is: – width: min. 2,0 mm max. max. 31,5 mm; – thickness: min. 0,80 mm 10,0 mm. Wires of grade 1 and grade 2 are included in this specification and apply to the complete range of conductors. The specified combinations of width and thickness as well as the specified ratio width/thickness are given in IEC 60317-0-2.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. IEC 60317-0-2:2020, Specifications for particular types of winding wires – Part 0-2: General requirements – Enamelled rectangular copper wire
3 Terms, definitions, general notes and appearance
3.1 Terms and definitions  For the purposes of this document, the terms and definitions given in IEC 60317-0-2 apply. ISO and IEC maintain terminological databases for use in standardization at the following addresses: • • IEC Electropedia: available at http://www.electropedia.org/ ISO Online browsing platform: available at http://www.iso.org/obp3.2 General notes Methods of test 3.2.1 Subclause 3.2 of IEC 60317-0-2:2020 applies. In case of inconsistencies between IEC 60317- 0-2 and this document, IEC 60317-18 shall prevail. 3.2.2 Winding wire Class 120 is a thermal class that requires a minimum temperature index of 120 and a heat shock temperature of at least 155 °C. The temperature in degrees Celsius corresponding to the temperature index is not necessarily that at which it is recommended that the wire be operated and this will depend on many factors, including the type of equipment involved. 3.3 Appearance Subclause 3.3 of IEC 60317-0-2:2020 applies.
4 Dimensions
Clause 4 of IEC 60317-0-2:2020 applies.
5 Electrical resistance
Clause 5 of IEC 60317-0-2:2020 applies.
6 Elongation
Clause 6 of IEC 60317-0-2:2020 applies.
7 Springiness
Clause 7 of IEC 60317-0-2:2020 applies.
8 Flexibility and adherence
Mandrel winding test
8.1 The coating shall show no crack after the wire has been bent flatwise and edgewise on a mandrel with a diameter as specified in Table 1.