IEC 60317-18:2020 pdf free download

IEC 60317-18:2020 pdf free download Specifications for particular types of winding wires – Part 18: Polyvinyl acetal enamelled rectangular copper wire, class 120
1Scope
This part of IEC 60317 specifies the requirements of enamelled rectangular copper windingwires 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 meetsall specified wire requirements
NOTE 1 A modified resin is a resin that has undergone a chemical change,or contains one or more additives toenhance certain performance or application characteristics.
NOTE 2 Polyvinyl acetal is a general name for a family of thermoplastic vinyl resins produced by thecondensation of polyvinyl alcohol with an aldehyde.Examples are polyvinyl acetal, polyvinyl formal and polyvinylbutyral.
The range of nominal conductor dimensions covered by this document is:- width:min. 2,0mm max.31,5mm;
– thickness: min. 0.80 mm max.10,0mm.
Wires of grade 1 and grade 2 are included in this specification and apply to the completerange of conductors.
The specified combinations of width and thickness as well as the specified ratiowidth/thickness are given in lEc 60317-0-2.
2Normative references
The following documents are referred to in the text in such a way that some or all of theircontent constitutes requirements of this document. For dated references,only the editioncited applies.For undated references, the latest edition of the referenced document (includingany amendments) applies.
IEC 60317-0-2:2020，Specifications for particular types of winding wires – Part 0-2: Generalrequirements – Enamelled rectangular copper wire
3Terms, definitions, general notes and appearance3.1 Terms and definitions
For the purposes of this document, the terms and definitions given in lEC 60317-0-2 apply.
lsO and lEC maintain terminological databases for use in standardization at the followingaddresses:
IEC Electropedia: available at http://www.electropedia.org/
Iso Online browsing platform: available at http://www.iso.org/obp
3.2 General notes
3.2.1 Methods of test
Subclause 3.2 of IEC 6031 7-0-2:2020 applies. In case of inconsistencies between IEC 6031 7-0-2 and this document, IEC 6031 7-1 8 shall prevail.
3.2.2 Winding wire
Class 1 20 is a thermal class that requires a minimum temperature index of 1 20 and a heat shock temperature of at least 1 55 °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 6031 7-0-2:2020 applies.
4 Dimensions
Clause 4 of IEC 6031 7-0-2:2020 applies.
5 Electrical resistance
Clause 5 of IEC 6031 7-0-2:2020 applies.
6 Elongation
Clause 6 of IEC 6031 7-0-2:2020 applies.
7 Springiness
Clause 7 of IEC 6031 7-0-2:2020 applies.
8 Flexibility and adherence
8.1 Mandrel winding test
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 .