SERIES-PARALLEL SWITCHING STRUCTURE OF PRIMARY WINDING OF CURRENT TRANSFORMER

摘要

PROBLEM TO BE SOLVED: To facilitate series-parallel switching operations of bars by providing a structure having few places where connection of the bars is changed in the switching operations. ;SOLUTION: A terminal 11a connected to the wind start of a winding 11, a terminal 12a connected to the wind start of a winding 12, a terminal 11b connected to the wind end of the winding 11 and a terminal 12b connected to the wind end of the winding 12 are disposed at an equal interval of 90° on the wall surface of a head vessel 1 and primary winding terminals are led out sequentially to the positions of the disposition. Besides, a bar 13 is fitted to the terminal 11a and a bar 14 is fitted between a conductor 9a for external connection on the power source side and the bar 13, while bars 15 and 16 are fitted to the terminal 12a and the terminal 11b respectively. Moreover, the conductor 9a for external connection is fitted to the bar 14 and a conductor 9b for external connection on the load side to the terminal 12b respectively. In the case of series connection, the bar 16 is connected to the terminal 12a, while in the case of parallel connection, the bar 15 is connected to the conductor 9a for external connection and also the bar 16 to the terminal 12b.;COPYRIGHT: (C)1997,JPO