JPS54134320A - Large-current transformer - Google Patents

Abstract

PURPOSE: To enable a miniaturization with any difference less than two turns provides as well in number of turns of the both low voltage windings in a coil arrangement divided into two of the top and bottom, by providing the out-going part of the start and finish ends of a low voltage winding in the main and series transformer and the series connection part between said both transformers.

CONSTITUTION: Each of low voltage windings 5, 6, in a main transformer 1 and a series transformer 2 that are housed in a case 3, is connected in series, and a voltage in an excitation winding 8 of the series transformer 2 is varied by switching the connection of a tap winding 7 of the main transformer 1, with a generated voltage changed in the low voltage winding 6 of the series transformer 2. And with the low voltage windng 5, 6 located in an arrangement of two stages of the top and bottom, between the both transformers 1 and 2 are provided a series connection conductor 9 and externally outgoing conductors 10, 11 in a manner as illustrated by the drawing, and a connection part 13 between the both transformers is provided in two places. In this way, a distance L4, between a side board 12 of the case 3 and a conductor end part of the low voltage winding 6, is reduced from that as usual, further in addition to the same number of turns capable between the low voltage windings of the both transformers, any difference between the number of turns can be constructed to a maximum of two truns.

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