Thermal Property Measurements on Bulk Bi‐2212 MCP Fault Current Limiter Materials

Abstract

In support of a collaboration between SuperPower, Inc., Nexans SuperConductors GmbH, American Electric Power Company, Inc., and EPRI to develop an HTS matrix fault current limiter, Oak Ridge National Laboratory is carrying out thermal property studies on samples of the bulk HTS elements that will be used in the device. The HTS samples are 2.5‐cm‐diam, 1.6‐mm‐wall tubes of Bi‐2212 MCP, a special melt‐cast 2212 material provided by Nexans. Since these tubes will have to dissipate considerable heat during a high‐current fault, accurate measurements of their thermal properties are required for design and engineering analysis. Results will be reported for heat capacity tests over a range from 80 K to 300 K.