I.S. EN 61788-1:2007

FOREWORD
INTRODUCTION
1 Scope
2 Normative references
3 Terms and definitions
4 Principle
5 Requirements
6 Apparatus
   6.1 Measurement mandrel material
   6.2 Mandrel construction
7 Specimen preparation
   7.1 Specimen bonding
   7.2 Specimen mounting
8 Measurement procedure
9 Uncertainty of the test method
   9.1 Critical current
   9.2 Temperature
   9.3 Magnetic field
   9.4 Specimen and mandrel support structure
   9.5 Specimen protection
10 Calculation of results
   10.1 Critical current criteria
   10.2 n-value (optional calculation, refer to A.7.2)
11 Test report
   11.1 Identification of test specimen
   11.2 Report of I[c] values
   11.3 Report of test conditions
Annex A (informative) Additional information relating to
         the standard
Annex B (informative) Self-field effect
Annex C (normative) Test method for Cu/Cu-Ni/Nb-Ti
         composite superconductors
Annex D (informative) Guidance for estimating winding
         tensile force
Annex ZA (normative) Normative references to international
         publications with their corresponding European
         publications
Bibliography

Specifies a test method for the determination of the d.c. critical current of either Cu/Nb-Ti composite superconductors that have a copper/superconductor ratio larger than 1 or Cu/Cu-Ni/Nb-Ti wires that have a copper/superconductor ratio larger than 0,9 and a copper alloy (Cu-Ni)/superconductor ratio larger than 0,2, where the diameter of Nb-Ti superconducting filaments is larger than 1 [mu]m.