JB/T 6758.4-2007 English PDF (JB/T6758.4-2007)

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JB/T 6758.4-2007: Continuously transposed conductors. Part 4: Heat resistant continuously transposed conductors of enamelled copper wires
JB/T 6758.4-2007
JB
MECHANICAL INDUSTRY STANDARD
OF THE PEOPLE’S REPUBLIC OF CHINA
ICS 29.060.01
K 12
Record No.. 20371-2007
Continuously Transposed Conductors –
Part 4. Heat Resistant Continuously Transposed
Conductors of Enamelled Copper Wires
ISSUED ON. MARCH 8, 2007
IMPLEMENTED ON. SEPTEMBER 1, 2007
Issued by. National Development and Reform Commission of PRC
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Table of Contents
Foreword ... 3
1 Scope ... 4
2 Normative References ... 4
3 Terms and Definitions, Code and Product Presentation ... 4
4 Models ... 5
5 Specifications ... 5
6 Technical Requirements, Test Method and Inspection Rules ... 6
6.1 Size ... 6
6.2 Material heat resistance and product structure ... 6
6.3 Technical requirements and test methods ... 6
6.4 Inspection rules ... 7
Foreword
JB/T 6758 Continuously Transposed Conductor are totally divided into the following 4
parts.
--- Part 1. General Requirements;
--- Part 2. Paper-Insulated Continuously Transposed Conductors of Polyvinyl Acetal
Enamelled Copper Wires;
--- Part 3. Less Paper Insulated Netting-Typed Continuously Transposed
Conductors of Polyvinyl Acetal Enamelled Copper Wires;
--- Part 4. Heat Resistant Continuously Transposed Conductors of Enamelled
Copper Wires.
This Part belongs to Part 4 of JB/T 6758.
This Part was proposed by China Machinery Industry Federation.
This Part shall be under the jurisdiction of National Technical Committee for
Standardization of Wire and Cable (SAC/TC 213).
Drafting organizations of this Part. Shanghai Electric Cable Research Institute.
Participating drafting organizations of this Part. Wuxi Huanyu Magnet Wire Co., Ltd.,
Shanghai Yanghang Copper Material Co., Ltd., Tianjin Nexans Electromagnetic Cable
Co., Ltd., Shenyang Hongyuan Magnet Wire Co., Ltd., and Invex Insulated Conductor
(Baoying) Co. Ltd.
Chief drafting staffs of this Part. Feng Feiya, Zhang Xiaobo, Yuan Weiguo, Yang
Xuqing, Ye Bin, and Zhang Jingping.
This Part was first-time published.
Continuously Transposed Conductors –
Part 4. Heat Resistant Continuously Transposed
Conductors of Enamelled Copper Wires
1 Scope
This Part of JB/T 6758 specifies the general requirements for heat resistant
continuously transposed conductors of enamelled copper wires. Such as polyester
fiber non-woven fabric strip insulated Grade-155 modified polyester continuously
transposed conductors of enamelled copper wire (referred to as non-woven fabric
continuously transposed conductor); aromatic polyamide paper-insulated Grade-180
polyester imide or Grade-200 polyester imide/polyamideimide composite continuously
transposed conductor of enamelled copper wire and semi-hard conductor (referred to
as aromatic polyamide continuously transposed conductor), etc. Enamelled
rectangular copper wire copper conductor can be either ordinary soft copper wire or
semi-hard copper wire.
This Part shall be used in conjunction with JB/T 6758.1-2007.
2 Normative References
The provisions in following documents become the provisions of this Part through
reference in this Part of JB/T 6758. For dated references, the subsequent amendments
(excluding corrigendum) or revisions do not apply to this Standard, however, parties
who reach an agreement based on this Standard 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 4074.2 Test Methods for Winding Wires – Part 2. Determination of
Dimensions (GB/T 4074.2-1999, idt IEC 60851-2.1996)
JB/T 6758.1-2007 Continuously Transposed Conductors – Part 1. General
Requirements
JB/T 6758.2-2007 Continuously Transposed Conductors – Part 2. Paper-Insulated
Continuously Transposed Conductors of Polyvinyl Acetal Enamelled Copper
Wires
3 Terms and Definitions, Code and Product
--- Edge b is (4.00~12.00) mm;
--- b/a = 2~6.5.
6 Technical Requirements, Test Method and
Inspection Rules
6.1 Size
The maximum shape size shall be no larger than the values calculated as per Formula
(4) and Formula (5) in 4.4 of JB/T 6758.1-2007.
--- k1 = 1;
--- k2 = 1;
--- Δmax is maximum thickness of lapping insulated layer; its value and deviation can
refer to Table 1 in JB/T6758.1-2007 or determined through the negotiation
between the supplier and the purchaser;
--- Kh can refer to Table 2 in JB/T 6758.2-2007;
--- Kw = 0.15 mm;
--- when W2max and H2max are within the specified range, Δmax is allowed to be out of
tolerance.
6.2 Material heat resistance and product structure
The heat resistance of enamelled rectangular wire and lapping insulated paper shall
be at least no less than the use requirements for heat resistance of continuously
transposed conductor; when the contract is signed, the supplier and purchaser shall
agree at the types of enamelled rectangular wire and insulated paper.
Insulation tape width, lapping pitch, lapping mode shall conform to the provisions of
Clause 4 in JB/T 6758.1-2007; or determined through the negotiation between the
supplier and the purchaser.
6.3 Technical requirements and test methods
The technical requirements and test methods shall conform to the provisions of Table
2.