JPS55105311A - Mounting method of earth piece in core type transformer - Google Patents

Abstract

PURPOSE: To improve the operation ablity of providing the earth connection for a transformer by a method wherein an earth piece is fixed striving for to keep surely the conductivity against the necessary number of the sheets of a core which is constituted with the laminated plates and the process for making the conductivity and the process for the settlement is performed in a continuous process.

CONSTITUTION: The magnetic plates 2 are laminated to form up an E shape core 1, and an earth piece 3 is mounted on a core lamination end surface 5. The earth piece legs 9 which are prepared at a side edge 8 of the main earth piece surface 6 are made to contact with the core laminated surface 4. A welding trace 10 is performed at the portion necessary to keep the intensity, and the position of the earth piece 3 is located responding to the position of the welding trace 10. An I-type another core block 11 is assembled on the core 1 by welding the joining line l₁ of the two core blocks to form the weld line, and the earth piece 3 is adhered to the end surface 5 by the weld line. Thus completing the construction of the core 1 by welding, the earth piece 3 is fitted up at the same time, and the process for making the conductivity and the process for settlement is performed in a continuous process.

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