Lecture06

Lecture06 - Page 1 Fundamentals of Power Systems Lecture 6...

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Unformatted text preview: Page 1 Fundamentals of Power Systems Lecture 6 1 Three-phase transformers z Core arrangements Transformer bank => three 1~ transformers (core type or shell type) 3~ transformer (3, 4, 5 legged core-type) z Winding arrangements Y-Y '- ' '-Y Y- ' With tertiary Fundamentals of Power Systems Lecture 6 2 Core Type vs. Shell Type Core type Shell type Page 2 Fundamentals of Power Systems Lecture 6 3 Three-phase transformer core forms Provides some flux path for magnetically unbalanced conditions Fundamentals of Power Systems Lecture 6 4 Y-Y connection LP LS V a V Neutral possible Neutral possible Magnitudes Page 3 Fundamentals of Power Systems Lecture 6 5 '- ' connection LP LS V a V Magnitudes Fundamentals of Power Systems Lecture 6 6 '-Y connection 3 LP LS V a V 3 LP LS V V a Magnitudes a c b a c b V LS Neutral possible V LS Attention The terminal connections in Figure 3-37(c) in Textbook leads to a phase transposition (acb => abc). Therefore, this diagram here abc)....
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This note was uploaded on 02/01/2012 for the course EEL 3216 taught by Professor Brooks during the Spring '08 term at FSU.

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Lecture06 - Page 1 Fundamentals of Power Systems Lecture 6...

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