Electric properties of a 66 kV 3-core superconducting power cable system

Shoichi Honjo*, Masato Shimodateshi, Yoshihisa Takahashi, Takato Masuda, Hiroyasu Yumura, Chizuru Suzawa, Shigeki Isojima, Hiroshi Suzuki

*Corresponding author for this work

Research output: Contribution to journalConference articlepeer-review

50 Citations (Scopus)


A 100 m-long, 66 kV, 3-core high temperature superconducting power cable system prototype has been developed and installed in order to verify its properties and performance for practical use. The cable is a cold dielectric type with three cable-cores placed in co-axial stainless corrugated pipes. After cooling the cable to LN2 temperature, long duration tests, such as that for nominal current-voltage loading and that for load fluctuation, were performed for a one-year period. The cable was warmed to room temperature after each test to investigate the influence of the heat cycle. Critical current was more than 2.7 kA at 77.3 K, and AC loss was 0.7 W/m/phase at 1 kArms. The magnitude of shielding current was almost equal to the transport current. Capacitance, dielectric losses and other electric properties were also measured. All values showed no change during the tests, and were in good agreement with calculated expectations.

Original languageEnglish
Pages (from-to)1952-1955
Number of pages4
JournalIEEE Transactions on Applied Superconductivity
Issue number2 II
Publication statusPublished - 2003 Jun
Externally publishedYes
Event2002 Applied Superconductivity Conference - Houston, TX, United States
Duration: 2002 Aug 42002 Aug 9


  • Power transmission cables
  • Superconducting cable
  • Superconductors (high-temperature)

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering


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