A 5 m long prototype co-axial flexible superconducting cable core has been made and tested at currents up to 30 kA. The inner and outer tubular conductors were both formed from helically-laid strips, and the dielectric between was lapped polyethylene tape. The dielectric was tested in separate exper
Design of flexible coaxial cores for ac superconducting cables
โ Scribed by J. Sutton; D.A. Ward
- Publisher
- Elsevier Science
- Year
- 1977
- Tongue
- English
- Weight
- 865 KB
- Volume
- 17
- Category
- Article
- ISSN
- 0011-2275
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โฆ Synopsis
The phase (inner) and neutral (outer) tubular conductors are each formed from two layers of niobium-clad copper strips laid in helices of opposite sense. The dielectric is lapped high density polyethylene tape impregnated with helium. The lay angles of the conductor strips are chosen to meet the requirements of thermal contraction and magnetic pressure from large fault currents.
๐ SIMILAR VOLUMES
Electrical tests on short models of the dielectric for a lapped polyethylene insulated superconducting cable are described. Impulse breakdown strengths and 50 Hz discharge inception fields are reported. The impulse strengths were encouraging but the discharge inception fields showed that further dev
for comparison with experimental data. The optimization of element values was effected by iterating one parameter at a time with the computer used for analysis.