Minimizing the Magnetic Field Surrounding Isolated-Phase Bus by Electrically Continuous Enclosures

Autor: W. F. Skeats, Nathan Swerdlow
Rok vydání: 1962
Předmět:
Zdroj: Transactions of the American Institute of Electrical Engineers. Part III: Power Apparatus and Systems. 81:655-665
ISSN: 0097-2460
DOI: 10.1109/aieepas.1962.4501385
Popis: This paper describes a bus with electrically continuous phase enclosures interconnected at both ends. Currents in the shielding loop thus formed reduce external magnetic flux to less than one tenth the amount experienced with a discontinuous sheath. Circulating currents in nearby metallic loops are greatly reduced thereby, making joint insulation and banding of steel beams unnecessary. Over-all sheath losses are practically unchanged, for shielding current losses are approximately balanced by substantial elimination of sheath eddy-current losses. Analytical predictions are confirmed by tests.
Databáze: OpenAIRE