iTeh StandardsiTeh Standards
EURUSD
Your shopping cart is empty.
SIST

SIST EN 61788-4:2002

(Main)

Superconductivity -- Part 4: Residual resistance ratio measurement - Residual resistance ratio of Nb-Ti composite superconductors

Superconductivity -- Part 4: Residual resistance ratio measurement - Residual resistance ratio of Nb-Ti composite superconductors

Describes a reference method for the determination of the residual resistance ratio (RRR) of a composite superconductor comprised of Nb-Ti filaments and Cu, Cu-Ni or Cu/Cu-Ni matrix. This method is intended for use with superconductors that have a rectangular or round cross-section, RRR less than 350, and cross-sectional area less than 3 mm2. All measurements shall be done without an applied magnetic field. Optional acquisition methods are outlined in annex A.

Supraleitfähigkeit -- Teil 4: Messungen des Restwiderstandsverhältnisses - Restwiderstandsverhältnis von Nb-Ti-Verbundsupraleitern

Supraconductivité -- Partie 4: Mesure de la résistivité résiduelle - Taux de résistivité résiduelle des supraconducteurs composites au Nb-Ti

Superconductivity - Part 4: Residual resistance ratio measurement - Residual resistance ratio of Nb-Ti composite superconductors

General Information

Status
Withdrawn
Publication Date
30-Apr-2002
Withdrawal Date
28-Mar-2017
ICS
17.220.20 - Measurement of electrical and magnetic quantities
29.050 - Superconductivity and conducting materials
Technical Committee
I09 - Imaginarni 09
Current Stage
9900 - Withdrawal (Adopted Project)
Start Date
29-Mar-2017
Due Date
21-Apr-2017
Completion Date
29-Mar-2017
Ref Project
EN 61788-4:2001 - Superconductivity - Part 4: Residual resistance ratio measurement - Residual resistance ratio of Nb-Ti composite superconductors

Relations

Replaced By
SIST EN 61788-4:2008 - Superconductivity -- Part 4: Residual resistance ratio measurement - Residual resistance ratio of Nb-Ti composite superconductors
Effective Date
29-Jan-2023
Replaced By
SIST EN 61788-4:2008 - Superconductivity -- Part 4: Residual resistance ratio measurement - Residual resistance ratio of Nb-Ti composite superconductors
Effective Date
01-Jul-2010

Buy Standard

EN 61788-4:2002EN 61788-4:2002
PreviousNext
Standard
EN 61788-4:2002
English language
22 pages
sale 10% off
Preview
sale 10% off
Preview
e-Library read for
1 day

Questions, Comments and Discussion

Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.

This May Also Interest You

SIST
SIST EN IEC 61788-22-3:2022(Main)
Superconductivity - Part 22-3: Superconducting strip photon detector - Dark count rate (IEC 61788-22-3:2022)
EN IEC 61788-22-3:2022

This part of IEC 61788 is applicable to the measurement of the dark count rate (DCR, RD) of
superconductor strip photon detectors (SSPDs). It specifies terms, definitions, symbols and the
measurement method of DCR that depends on the bias current (Ib) and operating temperature
(T).
NOTE The data of measurement results in Annex A are based on measurements of one institute only. The standard
will be updated after the data of a complete round robin test are available.

  • Standard
    27 pages
    English language
    sale 10% off
    e-Library read for
    1 day
SIST
SIST EN IEC 61788-22-2:2022(Main)
Normal state resistance and critical current measurement - High-Tc Josephson junction (IEC 61788-22-2:2021)
EN IEC 61788-22-2:2021

This part of IEC 61788 is applicable to high-Tc Josephson junctions. It specifies terms,
definitions, symbols and the measurement and estimation method for normal state resistance
(Rn) and intrinsic critical current (Ici), based on a combination of selecting a data set from
measured U–I curves with a geometric mean criterion and fitting a hyperbolic function to that
data set.

  • Standard
    38 pages
    English language
    sale 10% off
    e-Library read for
    1 day
SIST
SIST EN IEC 61788-23:2021(Main)
Superconductivity - Part 23: Residual resistance ratio measurement - Residual resistance ratio of cavity-grade Nb superconductors (IEC 61788-23:2021)
EN IEC 61788-23:2021

This part of IEC 61788 addresses a test method for the determination of the residual resistance
ratio (RRR), rRRR, of cavity-grade niobium. This method is intended for high-purity niobium
grades with 150 < rRRR < 600. The test method is valid for specimens with rectangular or round
cross-section, cross-sectional area greater than 1 mm2 but less than 20 mm2, and a length not
less than 10 nor more than 25 times the width or diameter.

  • Standard
    32 pages
    English language
    sale 10% off
    e-Library read for
    1 day
SIST
SIST EN IEC 61788-17:2021(Main)
Superconductivity - Part 17: Electronic characteristic measurements - Local critical current density and its distribution in large-area superconducting films (IEC 61788-17:2021)
EN IEC 61788-17:2021

This part of IEC 61788 specifies the measurements of the local critical current density (Jc) and
its distribution in large-area high-temperature superconducting (HTS) films by an inductive
method using third-harmonic voltages. The most important consideration for precise
measurements is to determine Jc at liquid nitrogen temperatures by an electric-field criterion
and obtain current-voltage characteristics from its frequency dependence. Although it is
possible to measure Jc in applied DC magnetic fields [20] [21], the scope of this document is
limited to the measurement without DC magnetic fields.
This technique intrinsically measures the critical sheet current that is the product of Jc and the
film thickness d. The range and measurement resolution for Jcd of HTS films are as follows.
– Jcd: from 200 A/m to 32 kA/m (based on results, not limitation).
– Measurement resolution: 100 A/m (based on results, not limitation).

  • Standard
    44 pages
    English language
    sale 10% off
    e-Library read for
    1 day
SIST
SIST EN IEC 61788-26:2020(Main)
Superconductivity - Part 26: Critical current measurement - DC critical current of RE-Ba-Cu-O composite superconductors (IEC 61788-26:2020)
EN IEC 61788-26:2020

This part of IEC 61788 specifies a test method for determining the DC critical current of short
RE (rare earth)-Ba-Cu-O (REBCO) composite superconductor specimens that have a shape of
straight flat tape. This document applies to test specimens shorter than 300 mm and having a
rectangular cross section with an area of 0,03 mm2 to 7,2 mm2, which corresponds to tapes
with width ranging from 1,0 mm to 12,0 mm and thickness from 0,03 mm to 0,6 mm.
This method is intended for use with superconductor specimens that have critical current less
than 300 A and n-values larger than 5 under standard test conditions: the test specimen is
immersed in liquid nitrogen bath at ambient pressure without external magnetic field during the
testing. Deviations from this test method that are allowed for routine tests and other specific
restrictions are given in this document.

  • Standard
    30 pages
    English language
    sale 10% off
    e-Library read for
    1 day
SIST
SIST EN IEC 61788-7:2020(Main)
Superconductivity - Part 7: Electronic characteristic measurements - Surface resistance of high-temperature superconductors at microwave frequencies (IEC 61788-7:2020)
EN IEC 61788-7:2020

IEC 61788-7 describes measurement of the surface resistance (Rs) ofsuperconductors at microwave frequencies by the standard two-resonator method. The objectof measurement is the temperature dependence of Rs at the resonant frequency.The applicable measurement range of Rs for this method is as follows:- Frequency: 8 GHz < f < 30 GHz- Measurement resolution: 0,01 mΩ at 10 GHzThe Rs data at the measured frequency, and that scaled to 10 GHz, assuming the f 2 rule forcomparison, is reported.

  • Standard
    46 pages
    English language
    sale 10% off
    e-Library read for
    1 day
SIST
SIST EN IEC 61788-23:2018(Main)
Superconductivity - Part 23: Residual resistance ratio measurement - Residual resistance ratio of Nb superconductors (IEC 61788-23:2018)
EN IEC 61788-23:2018

This part of IEC 61788 addresses a test method for the determination of the residual resistance
ratio (RRR), rRRR , of cavity-grade niobium. This method is intended for high-purity niobium
grades with 15 < rRRR < 600. The test method should be valid for specimens with rectangular or
round cross-section, cross-sectional area greater than 1 mm2 but less than 20 mm2, and a
length not less than 10 nor more than 25 times the width or diameter.

  • Standard
    31 pages
    English language
    sale 10% off
    e-Library read for
    1 day
  • Draft
    26 pages
    English language
    sale 10% off
    e-Library read for
    1 day
SIST
SIST EN IEC 61788-24:2018(Main)
Superconductivity - Part 24: Critical current measurement - Retained critical current after double bending at room temperature of Ag-sheathed Bi-2223 superconducting wires (IEC 61788-24:2018)
EN IEC 61788-24:2018

This part of IEC 61788 describes a test method for determining the retained critical current
after double bending at room temperature of short and straight Ag- and/or Ag alloy-sheathed
Bi-2223 superconducting wires that have the shape of a flat or square tape containing monoor
multicores of oxides. The wires can be laminated with copper alloy, stainless steel or Ni
alloy tapes.
The test method is intended for use with superconductors that have a critical current less than
300 A and an n-value larger than 5. The test to determine the retained critical current is
carried out without an applied magnetic field, with the test specimen immersed in a liquid
nitrogen open bath.

  • Standard
    32 pages
    English language
    sale 10% off
    e-Library read for
    1 day
SIST
SIST EN 61788-22-1:2018(Main)
Superconductivity - Part 22-1: Superconducting electronic devices - Generic specification for sensors and detectors (IEC 61788-22-1:2017)
EN 61788-22-1:2017

This part of IEC 61788-22-1 describes general items concerning the specifications for
superconducting sensors and detectors, which are the basis for specifications given in other
parts of IEC 61788 for various types of sensors and detectors. The sensors and detectors
described are basically made of superconducting materials and depend on superconducting
phenomena or related phenomena. The objects to be measured (measurands) include
magnetic fields, electromagnetic waves, photons of various energies, electrons, ions,
α-particles, and others.

  • Standard
    30 pages
    English language
    sale 10% off
    e-Library read for
    1 day
SIST
SIST EN 61788-5:2014(Main)
Superconductivity - Part 5: Matrix to superconductor volume ratio measurement - Copper to superconductor volume ratio of Cu/Nb-Ti composite superconducting wires
EN 61788-5:2013

This part of IEC 61788 covers a test method for the determination of copper to superconductor volume ratio of Cu/Nb-Ti composite superconducting wires. This test method and the alternate method in Annex A are intended for use with Cu/Nb-Ti composite superconducting wires with a cross-sectional area of 0,1 mm2 to 3 mm2, a diameter of the Nb-Ti filament(s) of 2 μm to 200 μm, and a copper to superconductor volume ratio of 0,5 or more. The Cu/Nb-Ti composite test conductor discussed in this method has a monolithic structure with a round or rectangular cross-section. This test method is carried out by dissolving the copper with nitric acid. Deviations from this test method that are allowed for routine tests and other specific restrictions are given in this standard. Cu/Nb-Ti composite superconducting wires beyond the limits in the cross-sectional area, the filament diameter and the copper to superconductor volume ratio could be measured with this present method with an anticipated reduction of uncertainty. Other, more specialized, specimen test geometries may be more appropriate for conductors beyond the limits and have been omitted from this present standard for simplicity and to retain low uncertainty. The test method given in this standard is expected to apply to other superconducting composite wires after some appropriate modifications.

  • Standard
    28 pages
    English language
    sale 10% off
    e-Library read for
    1 day