GB/T 4072.2 specifies the following test methods: - Test method 4: Dimension measurement Definition, general test method and list of winding wire test methods refer to GB/T 4072.1. GB/T 4074.2-1999 Winding wire test methods Part 2: Dimension measurement GB/T4074.2-1999 Standard download decompression password: www.bzxz.net

GB/T4074.1~4074.6—1999
This standard is equivalent to the International Electrotechnical Commission (IEC) standard IEC60851 "Winding Wire Test Method" series of standards. This series of standards are:
IEC60851-1:1996Www.bzxZ.net
IEC60851-2:1996
IEC60851-3.1996
IEC60851-4:1997
IEC60851-5.1996
IEC60851-6:1996
Winding Wire Test Method Test methods
Part 1: General provisions
Test methods for winding wires
Part 2: Dimensional measurement
Test methods for winding wires
Part 3: Mechanical properties
Test methods for winding wires
Part 4: Chemical properties
Test methods for winding wires Part 5: Electrical properties Test methods for winding wires
Part 6: Thermal properties||t t||Corresponding to the IEC60851 series of standards, this standard is divided into the following parts under the general title of "Test methods for winding wires": Test methods for winding wires Part 1: General provisions GB/T4074.1—1999
GB/T4074.2—1999
Test methods for winding wires Part 2: Dimensional measurement GB/T4074.3—1999
Test methods for winding wires Part 3: Mechanical properties Test methods for winding wires Part 4: Chemical properties GB/T4074.4—1999
GB/T4074.5—1999
Test methods for winding wires Part 5: Electrical properties GB/T4074.6—1999
Test methods for winding wires Part 6: Thermal properties Parts 2, 3, 4, 5 and 6 should be used together with Part 1. According to the provisions of GB/T1.1-1993 and the first amendment (1995), the foreword of the adopted object should be retained when adopting an international standard. Since the IEC60851 standard consists of 6 parts, all 6 parts have a foreword. Therefore, they are combined into the "IEC Foreword" of this standard. The "Introduction" of each part is also combined into the IEC Introduction of this standard. In addition, some editorial errors in IEC60851 were corrected when formulating this standard.
This standard cancels GB/T4074.15-1983\Reciprocating paint scraping test method", GB/T4074.18-1983\Breakdown voltage aluminum foil method", GB/T4074.28-1983 trichloroethylene and methanol extraction method", GB/T4074.30-1983\Chlorodifluoromethane solvent method" and GB/T4074.31-1983\Chlorodifluoromethane foaming method". This standard adds the self-adhesive layer thickness of enameled round wire, the bonding strength of twisted coils and the friction test methods. This standard revises GB/T4074.23-1983 "Test method for resistance to water-containing transformer oil". This standard retains the type test (T), extraction test (T) and extraction test (T) in GB/T4074.1-1983. The definitions of sample test (S) and routine test (R) are used to facilitate the implementation of the enameled wire product standard. Since the first amendment to IEC60172 (1998) has specified the temperature index determination method for enameled flat wire and film wrapped wire, the test method 15 "Temperature Index" in Part 6 "Thermal Properties" of this standard has been modified accordingly. This standard replaces GB/T4074-1983 and GB/T1343-1984 standards from the date of implementation. The appendices to this standard are all suggestive appendices. This standard was proposed by the State Bureau of Machinery Industry. This standard is under the jurisdiction of the National Technical Committee for Standardization of Wires and Cables. The main drafting units of this standard: Shanghai Cable Research Institute, Fuzhou Datong Electromechanical Co., Ltd., Tongling Jingda Copper Materials Group Co., Ltd., Zhengzhou Electromagnetic Wire Factory, Hengyang Instrument Machinery Factory. The main drafters of this standard: Chen Huimin, Shu Yingchun, Zheng Qirong, Zhu Qiang, Hu Jie, Yin Yuelu. 1
GB/T4074.14074.6—1999
IEC Foreword
1.IEC (International Electrotechnical Commission) is an international standardization organization composed of national electrotechnical committees (IEC National Committees). The purpose of EC is to promote international cooperation on all issues of standardization in the electrical and electronic fields. To achieve this purpose, in addition to organizing various activities, EC also publishes international standards and entrusts technical committees to formulate these standards. Any national committee interested in a certain standard may participate in the formulation of the standard. 2. Technical Committee IEC formal resolutions or agreements drawn up on behalf of the National Committees on technical issues of particular concern to them express as far as possible the international consensus on these issues. 3 These resolutions or agreements are published in the form of standards, technical reports or guidelines, which are used internationally in the form of recommended documents and are recognized by the National Committees in this sense. 4 In order to promote international unification, the IEC National Committees frankly adopt IEC International Standards in their countries and regions to the greatest extent possible. Any differences between EC standards and corresponding national or regional standards should be clearly pointed out in the national or regional standards. 5. IEC does not provide a marking method to indicate IEC approval, nor does IEC assume responsibility for any equipment that claims to comply with the requirements of a standard.
6. It must be noted that some of the contents of this international standard may be subject to patent rights. IEC shall not be responsible for identifying any or all such patent rights.
International Standard IEC60851-160851-6 was prepared by IEC Technical Committee 55 "Winding Wire". The second edition of IEC60851-1 standard cancels and replaces the first edition of 1985 and makes technical revisions. The text of this standard is based on the following documents: FDIS Documents
55/470A/FDIS
Voting Report
55/511/RVD
Full information on the voting for the approval of this standard can be found in the "Voting Report" listed in the table above. Appendix A is an informative appendix only.
The second edition of IEC60851-2 standard cancels and replaces the first edition published in 1985 and Amendment No. 1 (1992), and is technically revised.
The text of this standard is based on the following documents: FDIS Documents
55/471A/FDIS
Voting Report
55/512/RVD
Full information on the voting for the approval of this standard can be found in the "Voting Report" listed in the table above. The first amendment to IEC60851-2 is based on the following documents: FDIS Document
55/587/FDIS
Voting Report
55/605/RVD
All information on the voting to approve this standard can be found in the "Voting Report" listed in the table above. 1
GB/T4074.1~4074.6—1999
The second edition of IEC60851-3 standard cancels and replaces the first edition published in 1985 and its first and second amendments (1992), and makes technical revisions.
The text of this standard is based on the following documents:FDIS Document
55/472A/FDIS
Voting Report
55/513/RVD
Full information on the voting for the approval of this standard can be found in the "Voting Report" listed in the table above. Appendices A and B are only informative appendices. Amendment No. 1 to IEC60851-3 is based on the following documents:FDIS Document
55/592/FDIS
Voting Report
55/612/RVD
Full information on the voting for the approval of this standard can be found in the "Voting Report" listed in the table above. The second edition of IEC60851-4 standard cancels and replaces the first edition published in 1985 and its amendment No. 1 (1992), and makes technical revisions.
The text of this standard is based on the following documents: FDIS Documents
55/473A/FDIS
Voting Report
55/514/RVD
Full information on the voting and approval of this standard can be found in the "Voting Report" listed in the table above. Amendment No. 1 to IEC60851-4 is based on the following documents: FDIS Documents
55/597/FDIS
Voting Report
55/614/RVD
Full information on the voting and approval of this standard can be found in the "Voting Report" listed in the table above. IEC60851-4 Amendment No. 2.The first edition is a combination of the second edition of EC60851-4 (1996) and its first amendment (1997). The third edition of IEC60851-5 standard cancels and replaces the second edition published in 1988 and its first amendment (1990), and makes technical revisions.
This standard text is based on the following documents: FDIS document
55/474A/FDIS
Voting report
55/515/RVD
Full information on the voting to approve this standard can be found in the "Voting Report" listed in the table above. The first amendment to IEC60851-5 is based on the following documents:1
GB/T4074.1～4074.6—1999
FDIS Document
55/542/FDIS
Voting Report
55/572/RVD
Full information on the voting for the approval of this standard can be found in the "Voting Report" listed in the table above. The second edition of IEC60851-6 standard cancels and replaces the first edition published in 1985 and makes technical revisions. The text of this standard is based on the following documents:FDIS Document
55/475A/FDIS
Voting Report
55/516/RVD
Full information on the voting for the approval of this standard can be found in the "Voting Report" listed in the table above. Appendix A is an informative appendix only.
The first amendment to IEC60851-6 is based on the following documents:FDIS Document
55/561/FDIS
Voting Report
55/593/RVD
All information on the voting to approve this standard can be found in the "Voting Report" listed in the table above. N
GB/T4074.14074.6—1999
GB/T4074.1~4074.6 is a part of the series of standards for insulated wires for windings of electrical equipment. This series of standards consists of 3 parts:
a) Test methods (GB/T4074);
b) Product standards (IEc60317);
c) Packaging (JB/T8135).
1 Scope
National Standard of the People's Republic of China
Test methods for winding wires
Part 2: Determination of dimensions
Test methods for winding wires
Part 2: Determination of dimensions GB/T4074.2 specifies the following test methods: - Test method 4: Determination of dimensions
For definitions, general principles of test methods and a list of test methods for winding wires, see GB/T4074.1. 2 Reference standards
GB/T4074.2—1999
idt IEC 60851-2:1996
AmendmentNo.1:1997
ReplacesGB/T4074.2—1983
GB/T1343.2——1984
GB/T1343.10—1984
The following standards contain provisions that constitute the provisions of this standard through reference in this standard. When this standard is published, the versions shown are valid. All standards will be revised, and the parties using this standard should explore the possibility of using the latest versions of the following standards. GB/T4074.1—1999 Winding wire test method Part 1: General provisions (idtIEC60851-1: 1996) GB/T4074.5—1999 Winding wire test method Part 5: Electrical properties (idtIEC60851-5: 1996) 3 Test methods 4. Dimension measurement
3.1 Measuring tools
3.1.1 The accuracy of round wire and flat wire
measuring tools should be higher than 2μum. If the micrometer is measured directly on the winding wire, its measuring force should comply with the provisions of Table 1. The diameter range of the measuring rod and the measuring seat should also comply with the provisions of Table 1. Table 1 Measuring rod and measuring seat diameter and measuring force
Winding wire type
Enameled round wire
Film wrapped wire
Enameled flat wire or film wrapped flat wire
Fiber wrapped wire
Paper wrapped wire
Instructions for use:
Conductor nominal diameter
1 The performance index of film wrapped wire is omitted in Table 1 of the original text, which is supplemented by this standard. Approved by the State Administration of Quality and Technical Supervision on November 11, 1999 V
Measuring rod and measuring seat diameter
2000-05-01 implementation
3.1.2 Wire bundles
GB/T4074.2—1999
The outer diameter of the wire bundle should be measured with a polished cone rod, and the cone rod size is shown in Figure 1. 3.2 Test Procedure
3.2.1 Conductor Size
3.2.1.1 Round Wire
Note: See Table 2.
Table 2 Conductor Diameter Measurement
Conductor Nominal Diameter
d<0.063mm
d>0.063mm
Measurement Method
Article Number
3(GB/T4074.5)
Note: If the supply and demand parties agree, the insulated wire with a conductor nominal diameter of 0.063mm or more and 1.000mm or less may also be measured by the resistance measurement method. 3.2.1.1.1 Conductor Nominal Diameter 0.063mm or more and 0.200mm or less At three locations on a straightened sample, each 1m apart, remove the insulation layer by any method that does not damage the conductor, and measure the conductor diameter once at each location.
Record 3 measured values ​​and take the average value as the conductor diameter. 3.2.1.1.2 Conductor with nominal diameter of 0.200mm or more On a straightened specimen, remove the insulation layer by any method that does not damage the conductor, and measure the bare conductor diameter at three locations evenly divided along the circumference of the conductor.
Record 3 measured values ​​and take the average value as the conductor diameter. 3.2.1.2 Flat wire
Remove the insulation layer at three locations specified in Article 3.2.5.2 by any method that does not damage the conductor, and measure the wide side and narrow side dimensions once at each location.
Record 3 wide side and narrow side dimension measurements, and take the average value as the conductor wide side and narrow side dimensions. 3.2.2 Conductor out-of-roundness
Conductor out-of-roundness is the maximum difference between any two conductor diameter readings measured in accordance with Article 3.2.1.1 on each cross section of the conductor. Record the conductor out-of-roundness.
3.2.3 Fillet of Flat Wire
For this test, a cross section of the insulated wire shall be prepared and measured at adequate magnification. Three straightened flat wire specimens shall be cast in a suitable resin which will not affect the insulation. After curing, the colour of the resin shall contrast with the colour of the insulation.
Cut the three flat wire specimens embedded in the cured resin perpendicular to the axis of the flat wire and carefully grind and polish the cross section by appropriate means. The polished surface shall be inspected at an appropriate magnification to allow a correct judgement of the roundness of the fillet. The connection of the conductor arc with the flat surface shall be recorded, as shall any burrs, roughness and flanges. 3.2.4 Insulation Thickness
The insulation thickness is the difference between the outer dimensions and the conductor dimensions. 3.2.4.1 Round Wire
Measure the outer diameter and the conductor diameter in accordance with 3.2.1.1 and 3.2.5.1. The difference between the two shall be the insulation thickness. 3.2.4.2 Flat wire
The difference between the external dimensions of the wide side of the flat wire and the external dimensions of the wide side of the conductor measured in accordance with Articles 3.2.1.2 and 3.2.5.2 is the insulation thickness of the narrow side. The difference between the external dimensions of the narrow side of the flat wire and the external dimensions of the narrow side of the conductor measured is the insulation thickness of the wide side. 3.2.5 External dimensions
3.2.5.1 Round wire
GB/T4074.2—1999
3.2.5.1.1 For conductors with a nominal diameter of 0.200 mm or less, measure the outer diameter once at three locations on a straightening specimen, each 1 m apart. Record the three measured values ​​and take the average value as the outer diameter. 3.2.5.1.2 For conductors with a nominal diameter of more than 0.200 mm, measure the outer diameter three times at two locations on a straightening specimen, each 1 m apart, evenly divided along the circumference of the insulating wire. Record 6 measured values ​​and take the average value as the outer diameter. In the relevant product standards, the conductor diameter measurement method adopts the method specified in Table 2. 3.2.5.2 Flat wire
Measure the outer dimensions of the wide side and narrow side once at three locations of a straightened sample, each 100 mm apart. If the outer dimensions of the sample are larger than the diameter of the micrometer rod, the sample surface should be measured once in the middle and at the edge; if the two measured values ​​are different, the larger value is taken. Record the three measured values ​​of the outer dimensions of the wide side and narrow side, and take their average values ​​as the outer dimensions of the wide side and narrow side, respectively. 3.2.5.3 Wire harness
Note: The following measurement method measures the actual useful value, not the precise outer diameter. The outer diameter of the wire harness is the width of the wire harness layer wound on the cone rod divided by the number of windings. The wire harness should be tightly wound on the cone rod as shown in Figure 1 with a certain tension (N) that is 65 times the sum of the nominal cross-sections (mm) of the conductors of the wire harness. The winding width of the wire harness with an outer diameter of 0.5 mm or less should not be less than 10 mm, and the winding width of the wire harness with an outer diameter of more than 0.5 mm should not be less than 20 mm. The measurement accuracy is 0.5mm. Measure once. Record the outer diameter and round it to 0.01mm. 3.2.6 Thickness of the self-adhesive layer of enameled round wire
The thickness of the self-adhesive layer is the difference between the outer diameter of the self-adhesive enameled wire and the outer diameter of the enameled wire after the self-adhesive layer is removed. The outer diameter of the self-adhesive enameled wire shall be measured in accordance with Article 3.2.5.1. After removing the self-adhesive layer with a solvent or any other suitable reagent in any way that does not damage the primer, measure its outer diameter again. The difference is the thickness of the self-adhesive layer. Class 1: 3
Dimension unit: mm
Figure 1 Cone rod
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