JPS59143310A - Paper covered wire - Google Patents

Abstract

PURPOSE:To obtain a paper covered wire whose mechanical strength is not reduced even if it is divided into thin strand conductors at a low cost by a method wherein a plurality of enameled flat type conductors and a plurality of bare flat type conductors are coated by thermoplastic or thermosetting solid adhesive and are laid in parallel one after another and bundled into a solid body and wrapped by insulating paper in common. CONSTITUTION:A plurality of enameled flat type conductors, which are coated by a thermo fusible or thermo reactive adhesive 3, and a plurality of bare flat type conductor coated by the same adhesive 3 are piled one after another and united into a solid body and wrapped by insulating paper in common and moreover adhesive paper is wound over the insulating paper. With this constitution, the adhesive 3 is fused or fused and made react by heating and adhesion between the strand conductors is achieved and the mechanical strength of the coil is improved.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement in paper winding wire for increasing the mechanical strength of coils of transformers, reactors, etc.

Generally speaking, in order to completely reduce current loss in the coils of oil-filled transformers and accelerators, the strands are all finely divided to the extent that mechanical strength is required, several paper-wrapped edges are twisted, and then a common winding is made of insulating paper. however, one layer of conductor subdivision 1711 may be retained to reduce skin current losses. However, the finer the paper-wound wire is divided, the more the layers of insulating paper wound around the strands of wire bulge, which not only reduces the space factor of the conductor but also reduces its mechanical strength. This reduction in mechanical strength has the disadvantage that it becomes extremely disadvantageous against stress due to strong electromagnetic force generated when a short circuit large current flows.

This invention was made in view of the above-mentioned points.The invention is based on the idea of creating a paper-wound wire that does not reduce its mechanical sag even when the strands are completely finely divided, and that is also inexpensive. The purpose is to provide

An embodiment of the present invention will be described below with reference to the drawings. In the figure, (1) is a conductor, (2) is an enamel layer, and (8) is a conductor.
(4) is an adhesive, and (4) is an insulating paper.

That is, the feature of this invention is that a rectangular enameled wire coated with a solid adhesive (8) of heat-fusion or heat-reactive adhesive type, and a diagonal wire coated with the same adhesive (3). The method consists of stacking a plurality of sheets alternately and combining them with a common wrap of insulating paper.

In this way, when the adhesive-coated electric wire is wound around a desired coil and heated, the adhesive (8) fuses or reacts after the fuse, thereby achieving adhesion between the strands. According to this invention, the amount of expensive enameled rectangular wire used can be reduced, and the mechanical strength of the coil can be strengthened.

[Brief explanation of the drawing]

The drawing is a sectional view showing an embodiment of the present invention. In the figure, (1) is a conductor, (2) is an enamel coating, (8) is an adhesive, and (4) is an insulating paper. Agent Shin Kuzuno − J2

Claims (1)

[Claims] A paper-wound wire 0 characterized in that a plurality of rectangular enamelled wires and diagonal square wires, each coated with a thermoplastic or thermosetting solid adhesive, are alternately bundled in parallel, and an insulating paper is commonly wound thereon.