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JB/T 6758.1-2007 English PDF (JBT6758.1-2007)

JB/T 6758.1-2007 English PDF (JBT6758.1-2007)

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JB/T 6758.1-2007: Continuously transposed conductors. Part 1: General requirements

This part of JB/T 6758 specifies the type, product variety structure, technical requirements, acceptance rules and packaging marking of the continuously transposed conductors. This part shall be used in conjunction with the subsequent product standard parts of JB/T 6758.
JB/T 6758.1-2007
JB
MECHANICAL INDUSTRY STANDARD
OF THE PEOPLE REPUBLIC OF CHINA
ICS 29.060.01
K 12
Registration number. 20368-2007
Continuously transposed conductors
- Part 1. General requirements
????????????
ISSUED ON. MARCH 06, 2007
IMPLEMENTED ON. SEPTEMBER 01, 2007
Issued by. National Development and Reform Commission of PRC
Table of contents
Foreword ... 4
1 Scope ... 5
2 Normative references ... 5
3 Terms and definitions, codes and product representations ... 6
3.1 Terms and definitions ... 6
3.2 Symbols ... 8
3.3 Code ... 9
3.4 Product model ... 10
3.5 Product expression method ... 12
4 Technical requirements ... 13
4.1 Materials ... 13
4.2 Transposed core structure ... 14
4.3 Lapping insulation layer ... 16
4.4 Maximum dimensions of continuously transposed conductors ... 18
4.5 Welding ... 18
4.6 DC voltage resistance ... 19
4.7 Conductor path ... 19
4.8 Bond strength ... 19
4.9 Delivery length ... 19
5 Test methods ... 20
5.1 General ... 20
5.2 Dimensional measurements ... 20
5.3 DC voltage resistance test ... 21
5.4 Conductor path test ... 21
5.5 Bond strength test ... 21
5.6 Test of specified non-proportional extension strength Rp0.2 ... 22 5.7 Delivery length ... 22
6 Inspection rules ... 22
7 Packaging, marking and storage ... 23
7.1 Packaging ... 23
7.2 Marking ... 23
7.3 Storage ... 23
Appendix A (Informative) High elongation fiber paper ... 25
Appendix B (Informative) Aromatic polyamide paper ... 26
Appendix C (Informative) Heat-resistant electrical milk white glue ... 27 Foreword
JB/T 6758 ?€?Continuously transposed conductors?€? is divided into four parts. - Part 1. General requirements;
- Part 2. Paper-insulated continuously transposed conductors of polyvinyl acetal enameled copper wires;
- Part 3. Less paper insulated netting-typed continuously transposed
conductors of polyvinyl acetal enameled copper wires;
- Part 4. Heat resistant continuously transposed conductors of enameled copper wires
This part is part 1 of JB/T 6758.
Appendix A, Appendix B and Appendix C of this part are informative.
This part was proposed by the China Machinery Industry Federation.
This part shall be under the jurisdiction of National Wire and Cable
Standardization Technical Committee (SAC/TC213).
The responsible drafting organization of this part. Shanghai Cable Research Institute.
The participating drafting organization of this part. Shanghai Yangxing Copper Co., Ltd., Tianjin Nexans Electromagnetic Cable Co., Ltd., Baoding Tianwei Power Wire Co., Ltd., INVEX Insulated Wire Baoying Co., Ltd., Wuxi Huanyu Electromagnetic Cable Co., Ltd., Sichuan Jinrui Electric Co., Ltd., Shenyang Hongyuan Electromagnetic Cable Co., Ltd., Hefei ABB Transformer Co., Ltd. The main drafters of this part. Chen Huimin, Zhang Jingping, Liu Shunrong, Yuan Weiguo, Kang Jing, Ye Bin, Zhang Xiaobo, Zhao Gongrong, Yang Xuqing, Feng Feiya, Zheng Wanchang.
This part is released for the first time.
Continuously transposed conductors
- Part 1. General requirements
1 Scope
This part of JB/T 6758 specifies the type, product variety structure, technical requirements, acceptance rules and packaging marking of the continuously transposed conductors.
This part shall be used in conjunction with the subsequent product standard parts of JB/T 6758.
The continuously transposed conductor is applicable to the electrical windings of a variety of oil-immersed, dry-type transformers, and reactors, etc. 2 Normative references
The provisions in following documents become the provisions of this part through reference in this part of JB/T 6758. For the dated references, the subsequent amendments (excluding corrections) or revisions do not apply to this part; however, parties who reach an agreement based on this part are encouraged to study if the latest versions of these documents are applicable. For undated references, the latest edition of the referenced document applies. GB/T 228 Metallic materials - Tensile testing at ambient temperature (GB/T 228-2002, eqv ISO 6892.1998 (E))
GB/T 3048.14 Electric cables and wires - Method for D.C. voltage test (GB/T 3048.14-1992, neq ISO 060. 1 ~ 60.4.1973)
GB/T 4074.1 Test method for winding wires - Part 1. General (GB/T
4074.1-1999. Idt IEC 60851-1.1996)
GB/T 7095.2 Enameled rectangular wires - Part 2. Polyvinyl acetal
enameled rectangular copper wires class 120 (GB/T 7095.2-1995, eqv IEC
60317-18.1990)
GB/T 7095.3 Enameled rectangular wires - Part 3. Polyester enameled
rectangular copper wires with a temperature index of 155 (GB/T
7095.3-1995, eqv IEC 60317-16.1990)
GB/T 7095.4 Enameled rectangular wires - Part 4. Enameled rectangular
copper wires with a temperature index of 180 (GB/T 7095.4-1995, eqv IEC 60317-28.1990)
GB/T 7095.6 Enameled rectangular wires - Part 6. Polyester (imide)
over-coated with polyamide-imide enameled rectangular copper wires, class 200 (GB/T 7095.6-1995, eqv IEC 60317-29.1990)
GB 7969 Electric power cable paper (GB 7969-2003, IEC 60554-3-1.1979,
NEQ)
JB/T 9554 Electrical polyester non-woven fabric
QB/T 3521 500kV transformer coil winding paper
3 Terms and definitions, codes and product
representations
3.1 Terms and definitions
The following terms and definitions apply to this standard.
3.1.1
Continuously transposed conductor
It refers to the winding conductors formed by two rows of a certain number of enameled copper (aluminum) flat wires mutually contacted at wide
surfaces, transposed in same direction along the narrow surface of the top and below of the two rows of enameled flat wires, and lapped continuously by electrical insulated paper, rope or belt.
3.1.2
Transposition pitch
It refers to the axial length of a certain enameled flat wire in the continuously transposed conductor after subjected to a complete transposition cycle
divided by the number of enameled flat wires of the continuously transposed conductor, that is, the axial length between two adjacent transpositions. 3.1.3
Overlapping
Grid shape rope bundled self-adhesive acetal enameled continuously
transposed semi-hard conductor. HWNC1, HWNC2 or HWNC3
Rope bundled self-adhesive acetal enameled continuously transposed
semi-hard conductor with oil channel. HUKNC1, HUKNC2 or HUKNC3
3.4.3 Heat-resistant enameled continuously transposed conductor
Polyester fiber non-woven fabric insulation 155 grade modified polyester enameled continuously transposed conductor. HFZG
Polyester fiber non-woven fabric insulation 155 grade modified polyester enameled continuously transposed semi-hard conductor. HFZGC1, HFZGC2
or HFZG...

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