A device for measuring high current at cryogenic temperatures

Author

Berriaud, C. ; Donati, A.

Author_Institution

DSM/DAPNIA/STCM, CEA, Centre d´´Etudes Nucleaires de Saclay, Gif-sur-Yvette, France

Volume

12

Issue

1

fYear

2002

fDate

3/1/2002 12:00:00 AM

Firstpage

1264

Lastpage

1268

Abstract

In order to measure high current (several tens of kilo Ampere) at low temperature (down to 4.2 K), we have developed collaboration with Hitec Power Protection (Netherlands ex. Holec). This company sell the Macc+ (a low cost Direct Current Control Transformer) which measures up to 600 A (AC and DC) at 300 K. Several limitations of the standard Macc+ will be pointed out to find the adapted solutions for the different user conditions (temperature, current level and background magnetic field). With some minor modifications to the standard produce, we could place the torus sensor at low temperature and we measured up to RA in liquid helium at low field. Analysis of the behavior of the device in nonstandard conditions and experimental results will be reported. With more modifications, we could measure up to 38 kA at 4.2 K in a 0.5 T-background magnetic field.

Keywords

DC transformers; electric current measurement; low-temperature techniques; superconducting transformers; 0.5 T; 38 kA; 4.2 K; Hitec Power Protection; Macc+; background magnetic field; cryogenic temperatures; current level; direct current control transformer; high current measurement; nonstandard conditions; temperature; torus sensor; Collaboration; Cryogenics; Current measurement; Magnetic field measurement; Measurement standards; Power measurement; Protection; Temperature measurement; Temperature sensors; Toroidal magnetic fields;

fLanguage

English

Journal_Title

Applied Superconductivity, IEEE Transactions on

Publisher

ieee

ISSN

1051-8223

Type

jour

DOI

10.1109/TASC.2002.1018632

Filename

1018632