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GB/T 12970.4-2009 English PDF

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GB/T 12970.4-2009: Flexible copper stranded conductors for electrical purposes -- Part 4: Copper wires for electric brush
Status: Valid

GB/T 12970.4: Evolution and historical versions

Standard IDContents [version]USDSTEP2[PDF] delivered inStandard Title (Description)StatusPDF
GB/T 12970.4-2009English139 Add to Cart 3 days [Need to translate] Flexible copper stranded conductors for electrical purposes -- Part 4: Copper wires for electric brush Valid GB/T 12970.4-2009
GB/T 12970.4-1991English199 Add to Cart 2 days [Need to translate] Flexible copper stranded conductors for electrical purposes--Part 4: Copper brush wires Obsolete GB/T 12970.4-1991

PDF similar to GB/T 12970.4-2009


Standard similar to GB/T 12970.4-2009

GB/T 4910   GB/T 5585.1   GB/T 5585.2   GB/T 12971.1   GB/T 12970.3   GB/T 12970.1   

Basic data

Standard ID GB/T 12970.4-2009 (GB/T12970.4-2009)
Description (Translated English) Flexible copper stranded conductors for electrical purposes -- Part 4: Copper wires for electric brush
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard K11
Classification of International Standard 29.060.10
Word Count Estimation 6,681
Date of Issue 2009-03-19
Date of Implementation 2009-12-01
Older Standard (superseded by this standard) GB/T 12970.4-1991
Quoted Standard GB/T 3048.4-2007; GB/T 4909.2-2009; GB/T 4909.3-2009; GB/T 12970.1-2009
Regulation (derived from) Announcement of Newly Approved National Standards No. 3, 2009 (No. 143 overall)
Issuing agency(ies) General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China
Summary This standard specifies the copper brush wire model specifications, technical requirements and testing. This section applies to motor electrical and instrumentation lines connecting the copper brush wire. This part should GB/T 12970. 1-2009 together.

GB/T 12970.4-2009: Flexible copper stranded conductors for electrical purposes -- Part 4: Copper wires for electric brush


---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Flexilbe copper stranded conductors for electrical purposes Part 4. Copper wires for electric brush ICS 29.060.10 K11 National Standards of People's Republic of China Replacing GB/T 12970.4-1991 Electrical soft copper wire Part 4. Copper wire brush Posted 2009-03-19 2009-12-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Foreword

GB/T 12970 "Electrical soft copper stranded" is divided into four parts. --- Part 1. General requirements; --- Part 2. soft copper wire; --- Part 3. Flexible copper antenna; --- Part 4. Copper wire brush. This section GB/T Part of 412,970. This Part replaces GB/T 12970.4-1991 "electrician soft copper stranded Part 4. Copper wire brush." This section compared with the GB/T 12970.4-1991 The main changes are as follows. --- Remove section provides the structure and process requirements (before version 4.1.3 and 4.3.3); --- Part of the process requirements of the structural adjustment (before version 4.3.1 and 4.3.2, 4.1.3 and 4.1.4 of this edition); --- Modify the length of the manufacturing requirements (before version 4.8, this version 4.7). This part is proposed by the China Electrical Equipment Industrial Association. This part of the National Standardization Technical Committee Wire and Cable (SAC/TC213) centralized. This part of the unit responsible for drafting. Shanghai Electric Cable Research Institute. Participated in the drafting of this section. Shenzhen, China Cable Co., Ltd., Shanghai copper metal braid copper plant Jiang Su Jiangrun Copper Co. the company. The main drafters of this section. Liu Bin, party Peng, Zhang Peng, Chenya Fu, Liu Liming. This part of the standard replaces the previous editions are. --- GB/T 12970.4-1991. Electrical soft copper wire Part 4. Copper wire brush

1 Scope

GB/T 12970 provisions of this section copper brush wire model specifications, technical requirements and testing. This section applies to electrical and motor on the instrument line connecting copper wire brush. This section should be used in conjunction with the GB/T 12970.1-2009.

2 Normative references

The following documents contain provisions which, through reference GB/T 12970 in this section constitute provisions of this section. For dated reference documents Member, all subsequent amendments (not including errata content) or revisions do not apply to this section, however, encouraged to reach under this section Parties to research agreement to use the latest versions of these documents. For undated reference documents, the latest versions apply to this section. GB/T 3048.4-2007 electrical wire and cable performance test methods - Part 4. Conductor DC resistance test GB/T 4909.2-2009 Test methods for bare wires - Part 2. Measure GB/T 4909.3-2009 Test methods for bare wires - Part 3. Tensile Test GB/T 12970.1-2009 Electrical soft copper wire - Part 1. General requirements

3 models and specifications

Copper brush wire models and specifications shown in Table 1. Table 1 copper wire brush type and specifications Model Name Nominal cross-sectional area mm2 TS TSX TSR Copper wire brush Tinned copper wire brush Soft copper wire brush 0.25 to 16 0.25 to 16 0.063 to 6.3 4. Technical Requirements 4.1 Structure 4.1.1 TS-type structure and TSX copper brush wire should meet the requirements of Table 2. Structure 4.1.2 TSR soft copper wire brush should be in accordance with Table 3. 4.1.3 There should be no shortage of brush line stocks, shares or broken strands damage phenomenon, the strands do not allow the entire shares welding. 4.1.4 lack of individual strands of wire should not exceed 3% of the total number of strands in a single line. 4.2 Stranded 4.2.1 wire brush to the outermost layer should be twisted to the right. Unless otherwise supply and demand sides of lay protocol, adjacent layers should contrast, the twisted strands by Specified by the manufacturer. Section 4.2.2 twisted inner diameter ratio should be less than 12, the outer stranding pitch diameter ratio should be 8 to 10. Section 4.2.3 strand diameter ratio should be less than 25.

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Answer: Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version GB/T 12970.4-2009 even if the enforcement date is in future. Complying with the latest version means that, by default, it also complies with all the earlier versions, technically.