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JIS H 7305:2010

JIS H 7305:2010

$45.50

Superconductivity-Part 3: Critical current measurement-DC critical current of Ag- and/or Ag alloy-sheathed Bi-2212 and Bi-2223 oxide superconductors

Published By Publication Date Number of Pages
JIS 2010-03-23 25
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This Standard covers a test method for the determination of the dc critical current of short and straight Ag- and/or Ag alloy-sheathed Bi-2212 and Bi-2223 oxide superconductors that have a monolithic structure and a shape of round wire or flat or square tape containing mono- or multicores of oxides.

This method is intended for use with superconductors that have critical currents less than 500 A and n-values larger than 5.

The test is carried out with and without an applying external magnetic field.

For all tests in a magnetic field, the magnetic field is perpendicular to the length of the specimen.

In the test of a tape specimen in a magnetic field, the magnetic field is parallel or perpendicular to the wider tape surface (or one surface if square).

The test specimen is immersed either in a liquid helium bath or a liquid nitrogen bath during testing.

Deviations from this test method that are allowed for routine tests and other specific restrictions are given in this Standard.

NOTE: The International Standard corresponding to this Standard and the symbol of degree of correspondence are as follows:

lEC 61788-3: 2006 Superconductivity-Part 3: Critical current measurement- DC critical current of Ag- and / or Ag alloy-sheathed Bi-2212 and Bi-2223 oxide superconductors (IDT)

The symbols which denote the degree of correspondence in the contents between the relevant International Standard and JIS are IDT (identical), MOD (modified), and NEQ (not equivalent) according to ISO/ lEC Guide 21-1.

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JIS H 7305:2010
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