STATIONARY INDUCTION ELECTRO-MAGNETIC APPARATUS

PROBLEM TO BE SOLVED: To increase rigidity of iron core leg portion, reduce loosening of electro-magnetic steel plate forming the iron core leg portion and control increase of iron core and increase of noise level due to the loosening, by sandwiching in the stacking pressure direction the electromag...

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Bibliographic Details
Main Authors KAGOHARA YOSHIJI, HARAGUCHI TOMOMASA, HIRAKAWA KOICHI
Format Patent
LanguageEnglish
Published 12.01.2001
Edition7
Subjects
BASIC ELECTRIC ELEMENTS
ELECTRICITY
INDUCTANCES
MAGNETS
SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
TRANSFORMERS
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Summary:PROBLEM TO BE SOLVED: To increase rigidity of iron core leg portion, reduce loosening of electro-magnetic steel plate forming the iron core leg portion and control increase of iron core and increase of noise level due to the loosening, by sandwiching in the stacking pressure direction the electromagnetic steel plate forming the leg portion of the 3-phase winding iron core with a supporting plate, and then tightening the iron core leg portion by tightening the support plate with a mechanism for adjusting the tightening pressure of these support plates. SOLUTION: This stationary induction electromagnetic apparatus gives a tightening pressure to the iron core legs 21, 22, 23 via a support plate 4 by giving a tightening pressure with a nut 5 and a bolt 6 to the support plates 4 arranged to sandwich the iron core legs 21, 22, 23 in the gap between the iron core legs 21, 22, 23 and the coil 3, and reduces the loosening of the iron core legs 21, 22, 23 in order to realize low noise of apparatus by controlling increase of noise.
Bibliography:Application Number: JP19990177912