BS/EN 60317-27-2014 pdf download.Specifications for particular types of winding wires Part 27: Paper tape covered rectangular copper wire.
This part of IEC 60317 specifies the requirements of paper tape covered rectangular copper winding wires. This covering consists of two or more layers of paper tape, all in the same direction and is primarily intended for winding coils for oil immersed transformers.
The range of nominal conductor dimensions covered by this standard is:
— width: mm. 2.0 mm max. 16.0 mm;
— thickness: mm. 0,80 mm max. 5,60 mm.
The paper tapes covered by this standard are restricted to those specified In IEC 60554-1 having thicknesses in the range 25 l.lm to 125 jIm inclusive.
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and are Indispensable for Its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (Including any amendments) applies.
IEC 60317-0-2:2013, Specifications for particular types of winding wires — Part 0-2: General requirements — Enamelled rectangular copper wire
IEC 60554-1, Specification for cellulosic papers for electrical purposes — Part 1: Definitions and general requirements
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 6031 7-0-2 and the following apply.
3.1.1
covering
material which is wound, wrapped or braided around a bare or insulated conductor
3.2 General notes
3.2.1 Methods of test
Subclause 3.2.1 of IEC 60317-0-2:2013 applies. In case of inconsistency between IEC 60317-0-2:2013 and this standard, IEC 60317-27 shall prevail.
— nominal conductor dimensions in millimetres (width x thickness):
— nominal increase in dimensions due to paper.
EXAMPLE: IEC 60317.27 4,00 1,00 + 0,20
— prool stress minimum (and maximum) value
EXAMPLES: IEC 60317.27 4,00 * 1,00 + 020 IEC 60317.27 7,00 * 2,50 + 1,00 RDO,, 150 MPa
3.3 Appearance
The conductor shall be essentially free from copper dust and other extraneous matter when examined with normal vision, as wound on the original spool or reel. The paper covering shall be of one or more tapes wrapped firmly, closely, evenly, and continuously around the conductor.
No bonding or adhesive material shall be used except to anchor the ends of paper tapes.
4 Dimensions
4.1 Conductor dimensions
Subclause 4.1 of IEC 6031 7-0-2: 2013 applies.
4.2 Tolerance on conductor dimensions
Subclause 4.2 of IEC 6031 7-0-2: 2013 applies.
4.3 RoundIng of corners
Subclause 4.3 of IEC 6031 7-0-2: 2013 applies.
4.4 Increase In dimensions due to paper tape covering
The increase in width or thickness due to the paper tape covering shall be agreed between purchaser and supplier and the minus tolerance shall not exceed the values given in Table 1.
The increase in width due to the paper covering shall be equal to or less than the increase in thickness.
The maximum increase may be exceeded, provided that the maximum overall dimension does not exceed the sum of the maximum dimensions of the conductor plus the maximum increase given in Table 1.
4.5 Maximum overall dimensions
The overall dimensions shall be measured under a pressure of (1 ± 0,1) NImm2 over the
cross-section of the bare conductor nominal dimension.
The overall dimensions shall not exceed the sum of the maximum bare dimensions given in 4.2 and the maximum Increase in dimensions permitted in 4.4.
5 Electrical resistance
Clause 5 of IEC 60317-0-2:2013 applies.
6 Elongation
Clause 6 of IEC 60317-0-2:2013 applies.
NOTE When the value of the proof stress of the copper is specified between minimum and maximum limits, the requirements are agreed upon between the purchaser and supplier. The description of the term proof stress and the method of determination are given in Annex A.
7 Springiness
Test appropriate but no requirements specified.
8 Flexibility and adherence
Because of the great variation in the number and the thickness of papers applied, the requirements for flexibility shall be agreed between purchaser and supplier at the time of placing the order.
9 Heat shock
Test inappropriate.
10 Cut-through
Test inappropriate.
11 Resistance to abrasion Test inappropriate.
12 Resistance to solvents Test inappropriate.
13 Breakdown voltage Test inappropriate.
14 Continuity of insulation Test inappropriate.
15 Temperature index
Test requirements under consideration.
16 Resistance to refrigerants Test inappropriate.
17 Solderability
Test inappropriate.
18 Heat or solvent bonding Test inappropriate.
19 Dielectric dissipation factor Test inappropriate.BS/EN 60317-27-2014 pdf download.