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GB/T 38842-2020Categories and test methods of practical superconducting wires - General characteristics and guidance (English PDF)

实用超导线的分类和检测方法一般特性和指南

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Issued by

State Administration for Market Regulation, China National Standardization Administration

Level / Type

National · Recommended

Issue date

June 2, 2020

Implementation date

December 1, 2020

Scope

GB/T 38842-2020 is the English-translated version of 实用超导线的分类和检测方法一般特性和指南.

GB/T 38842-2020 is the Chinese standard "Categories and test methods of practical superconducting wires - General characteristics and guidance".

Its scope clause reads: This standard gives the general characteristics of practical superconducting wires, and provides test methods for the mechanical, electrical and superconducting characteristics of practical superconducting wires Application guide.

Practical wire refers to a wire that can be continuously produced in commercial batches to a sufficient length and can be used for manufacturing equipment. This standard pays special attention to the characteristics of practical superconducting wires different from conventional copper and aluminum wires.

This standard applies to various superconducting wires described in 2.4 of GB/T 2900.100-2017, including single-core, multi-core superconducting wires, and composite superconducting Body and coated conductor, as well as other composite superconducting wires of integrated structure.

This standard does not apply to wires other than practical superconducting wires (such as prototypes, test specimens, and wires under development), and conductors composed of multiple wires (Such as cable).

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Document preview — GB/T 38842-2020

National Standard of the People's Republic of China

ICS: 17.220.20; 29.050
Classification: K 10

Issued by: State Administration for Market Regulation, China National Standardization Administration

Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Practical superconducting wire category
5 Characteristic attributes of practical superconducting wires
6 Feature classification
7 Characteristic measurement of standard specifications
8 Technical information for the specification and use of auxiliary practical superconducting wires
Appendix A (informative appendix) This standard and IEC TR61788-20.2014 and IEC 61788-21.2
Appendix B (Informative Appendix) Practical Superconducting Wire Structure
Appendix C (informative appendix) Classification of practical superconducting wires
Appendix D (Informative Appendix) Characteristic Properties of Practical Superconducting Wire

1 Scope

This standard gives the general characteristics of practical superconducting wires, and provides test methods for the mechanical, electrical and superconducting characteristics of practical superconducting wires

Application guide. Practical wire refers to a wire that can be continuously produced in commercial batches to a sufficient length and can be used for manufacturing equipment.

This standard pays special attention to the characteristics of practical superconducting wires different from conventional copper and aluminum wires.

This standard applies to various superconducting wires described in 2.4 of GB/T 2900.100-2017, including single-core, multi-core superconducting wires, and composite superconducting

Body and coated conductor, as well as other composite superconducting wires of integrated structure.

2 Normative references

The following documents are essential for the application of this document. For dated reference documents, only the dated version applies to this article

Pieces. For the cited documents without date, the latest version (including all amendments) applies to this document.

GB/T 2900 (all parts) electrical engineering terminology [IEC 60050 (all parts)]

GB/T 18502 Critical current measurement DC threshold of silver and/or silver alloy coated Bi-2212 and Bi-2223 oxide superconductors

Current (GB/T 18502-2018, IEC 61788-3.2006, IDT)

GB/T 21227 AC loss measurement Cu/Nb-Ti multi-wire composite wire hysteresis loss magnetometer measurement method (GB/T 21227-

2007,IEC 61788-13.2003,IDT)

GB/T 21546 DC critical current measurement of niobium-titanium composite superconductor (GB/T 21546-2008, IEC 61788-1.2006,

IDT)

GB/T 22587 Measurement of volume ratio of substrate to superconductor Copper-niobium-titanium (Cu/Nb-Ti) composite superconductor Copper-super [volume] ratio measurement (GB/T 22587-2017, IEC 61788-5.2013, IDT)

GB/T 28871 DC critical current measurement of Nb3Sn composite superconductor (GB/T 28871-2012, IEC 61788-

2.2006, IDT)

GB/T 30109 AC loss measurement coil for detecting total AC loss of circular cross-section superconducting wire in transverse alternating magnetic field at liquid helium temperature

Measurement method (GB/T 30109-2013, IEC 61788-8.2010, IDT)

GB/T 31522 volume ratio test of matrix and superconductor Nb3Sn composite superconductor copper to non-copper volume ratio (GB/T 31522-

2015, IEC 61788-12.2013, IDT)

GB/T 31527 Mechanical properties measurement NbTi/Cu composite superconducting wire tensile test method at room temperature (GB/T 31527-2015, (IEC 61788-6.2011, IDT)

GB/T 31780 Critical temperature measurement Resistance method for measuring the critical temperature of composite superconductors (GB/T 31780-2015, IEC 61788-10.

2006,IDT)

GB/T 36611 Mechanical properties measurement Ag and/or Ag alloy coated Bi-2223 and Bi-2212 composite superconductor room temperature tensile test

Test method (GB/T 36611-2018, IEC 61788-18.2013, IDT)

IEC 61788-4 Superconductivity Part 4.Residual resistance ratio measurement Residual resistance ratio measurement of Nb-Ti and Nb3Sn composite superconductors (Superconductivity-Part 4.Residualresistanceratiomeasurement-Residualresistanceratioof

GB/T 4910 | GB/T 36102 | JB/T 6758.3 | GB/T 33588.3 | GB/T 33588.1 | […]

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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 30 pages — is available in the English PDF.

Referenced standards

Normative references

GB/T 2900 · IEC 60050 · IEC 61788

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