JPS5530875A - Multiple ratio current transformer - Google Patents

Abstract

PURPOSE: To avoid a misconnection by arranging such that a primary coil of multiple ratio current transformer in equivalent current ratio is done in series connection and then coil group effected in series connection in order the secondary coil of each current transformer, is done in series connection again so that beginning point of secondary coil and end point of the coil are drawn out the outside.

CONSTITUTION: A first and second current transformer; CT₃ and CT₄, have respectively two divided independent secondary coil; 4 and 5, 4' and 5' and that each secondary coil has its begining and end terminal; 1K₁, 1l₁, 1K₂, 1l₂; 2K₁, 2l₁, 2K₂, 2l₂. Now, referring to the connection of these secondary coil, an end terminal 1l₁ is jointed to 2K₁ and an ending terminal 2l₁ is jointed to a begining terminal 1K₂ and an ending terminal 1l₂ is jointed to a begining terminal 2K₂. That is to say, series connection is effected in accordance with the secondary coil; 4-4' -5-5' alternatively and then first begining terminal 1K₁, ending terminal 2l₂ and a terminal 2l₁ as the connection point of secondary coil; 4' and 5 are pull out on a terminal plate 6 as a terminal K₁, l, and K₂.

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