The object of measurement is the temperature dependence of Rs at the resonant frequency.

The applicable measurement range of surface resistances for this method is as follows:

— Frequency: 8 GHz less than f less than 30 GHz

— Measurement resolution: 0.01 mO at 10 GHz

The surface resistance data at the measured frequency, and that scaled to 10 GHz, assuming the f2 rule for comparison, are reported.

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

lEC 61788-7: 2006 Superconductivity-Part 7: Electronic characteristic measurements-Surface resistance of superconductors at microwave frequencies (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/IEC Guide 21-1.</<30 10 P at GHz mQ 0.01 resolution: Measurement GHz<>

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.

The control circuit for industrial use means the control circuit used for general industries in the environment such as the industrial district, measurement room and laboratory.

This Standard is applicable to the cases where the thermal factor is the dominant ageing factor.

NOTE 1 A thermal class of a certain electrical insulation system cannot be assigned to the electrical insulating material which is used therein solely because of its use in the electrical insulation system.

NOTE 2 The International Standard corresponding to this Standard and the symbol of degree of correspondence are as follows.

IEC 60085 : 2007 Electrical insulation – Thermal evaluation and designation (MOD)

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/IEC Guide 21-1.

This Standard is applicable at power frequencies to

a) grain oriented electrical steel sheet and strip:

1) for the measurement of peak values of magnetic flux density J between 1.0 T and 1.8 T of:

— specific total loss Ps;

— specific apparent power Ss;

— r.m.s. value of the magnetic field strength H;

2) for the measurement up to peak values of magnetic field strength H of 1 000 A/m of:

— peak value of the magnetic flux density J;

— peak value of the magnetic field strength H;

b) non-oriented electrical steel sheet and strip:

1) for the measurement peak values of magnetic flux density J between 0.8 T and 1.5 T of:

2) for the measurement up to peak values H of magnetic field strength of 10 000 A/m of:

— peak value of the magnetic field strength H.

The single sheet tester is applicable to test specimens obtained from magnetic sheets and strips of any quality.

The magnetic properties are determined for a sinusoidal induced voltage (hereafter referred to as "sinusoidal magnetic flux excitation condition"), for specified peak values of magnetic flux density J and for a specified frequency.

The measurements are made at an ambient temperature of 23 °C ± 5 °C on test specimens which have first been demagnetized.

NOTE 1 In the International Standard corresponding to this Standard, lEC 60404-3 : 2009, the quantity "magnetic polarization" is used as defined in lEC 60050-221 : 1990.

In some standards of the lEC 60404 series, the quantity "magnetic flux density" was used.

In this standard, the latter, which is an common use in japan, is used.

NOTE 2 The International Standard corresponding to this Standard and the symbol of degree of correspondence are as follows.

lEC 60404-3 : 1992 Magnetic materials – Part 3 : Methods of measurement of the magnetic properties of magnetic sheet and strip by means of a single sheet tester, Amendment 1 : 2002 and Amendment 2 : 2009 (MOD)

In addition, 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.

The measurements will be made at an ambient temperature of 23 °C ± 5 °C.

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

IEC 60404-13 : 2018 Magnetic materials — Part 13 : Methods of measurement of resistivity, density and stacking factor of electrical steel strip and sheet (MOD)

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

These quantities are necessary to establish the magnetic characteristics of the material.

In particular, the density is necessary to allow specified values of the magnetic flux density to be set without knowing the thickness of the test specimen.

For the measurement of the density, the immersion method was earlier considered to be a fundamental method.

However, experience has shown that this method is very difficult to use in the case of the test specimen with a relatively large surface area.

This method is therefore not included in this Standard, It is described in ISO 1183 and ISO 2738.

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

IEC 60404-13 : 1995 Magnetic materials – Part 13 : Methods of measurement of density, resistivity and stacking factor of electrical steel sheet and strip (MOD)

In addition, 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/IEC Guide 21-1.

This method is applicable to magnetic sheet and strip insulated on one or both surfaces and is suitable for manufacturing control in the application of insulation coatings.

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

IEC 60404-11 : 1991 Magnetic materials — Part 11 : Method of test for the determination of surface insulation resistance of magnetic sheet and strip, Amendment 1 : 1998 and Amendment 2 : 2012 (MOD)

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

This test method is applicable to electrical steel strip and sheet insulated on one or both surfaces, and is suitable for manufacturing control in the application of insulation coatings.

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

lEC 60404-11 : 1999 Magnetic materials — Part 11 : Method of test for the determination of surface insulation resistance of magnetic sheet and strip (MOD)

In addition, 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/IEC Guide 21 -1.