Stationary induction apparatus

Claim 2

An electrical stationary induction apparatus comprising a magnetic core consisting of at least two main legs and yokes to magnetically couple said main legs, a high-voltage winding consisting of at least two winding sections wound separately around said main legs, wherein the outer end portion of the conductor of one winding section of said high-voltage winding serving as a first lead conductor is passed to the periphery of the other winding section of said high-voltage winding, curved along said periphery and leaves at a predetermined position said periphery together with the outer end portion of the conductor of said other winding section serving as a second lead conductor so that said first and second lead conductors may be connected together with an external terminal.

Claim 3

An electrical stationary induction apparatus as claimed in claim 1, wherein said magnetic core comprises a pair of parallel disposed main legs, a pair of side yokes disposed opposite and parallel to said main legs, and an upper and a lower yokes, to magnetically couple said main legs and said side yokes, and said high-voltage winding is separately distributed around said main legs.

Claim 4

An electrical stationary induction apparatus as claimed in claim 1, wherein said magnetic core comprises three main legs, a pair of side yokes disposed opposite and parallel to said main legs, and an upper and a lower yokes to magnetically couple said main legs and said side yokes, and said high-voltage winding is separately distributed around said three main legs.

Claim 5

An electrical stationary induction apparatus as claimed in claim 1, wherein said high-voltage winding sections wound separately around said main legs are all parrallel connected by means of said lead-conductors.

Claim 6

An electrical stationary induction apparatus as claimed in claim 1, wherein each of said high-voltage winding section wound around each of said main legs comprises a pair of unit coils arranged in a stack and parallel connected with each other, and said lead conductors are taken out from between the opposing ends of said unit coils.

Claim 7

An electrical stationary induction apparatus as claimed in claim 2, wherein said first lead conductor is wound along a portion of the periphery of said other winding section which is facing to the periphery of said one winding section and led out from said periphery of said other winding section toward the outside of an air gap between the peripheries of said two winding sections together with said second lead conductor in parallel relation with each other.

Claim 8

An electrical stationary induction apparatus as claimed in claim 4, wherein said lead conductors parallel connecting said winding sections are extended parallel, clothed in a common insulating sheath and convected with a high-voltage terminal, and said insulating sheath is covered by a shielding conductor.

Claim 9

An electrical stationary induction apparatus as claimed in claim 5, wherein between said unit coils wound around each main leg is provided a shielding ring which is partially cut away in such a manner that the outer diameter of said ring may be partially smaller than that of said unit coils to form a space for receiving said lead conductors therein.

Claim 10

An electrical stationary induction apparatus as claimed in claim 5, wherein each of said unit coils consists of a plurality of pancake-shaped coil segments of two kinds alternately disposed in a stack, one of said two kinds of said coil segments having its conductor wound radially from outer to inner positions and the other kind of coil segment having its conductor wound radially from inner to outer positions with the direction of winding in said two kinds of coil segments being the same, and wherein the outermost turn of the innermost coil segment of said unit coil is removed to define a space to receive said lead conductors therein.

Claim 11

As electrical stationary induction apparatus comprising a magnetic core consisting of at least two main legs, at least a pair of side yokes disposed opposite and parallel to said main legs, and upper and lower yokes to magnetically couple said main legs and said side yokes, a high-voltage winding consisting of at least two winding sections wound separately around said main legs, and a low-voltage winding consisting of winding sections wound around said main legs under said high-voltage winding sections, wherein the outer end portion of the conductor of one winding section of said high-voltage winding serving as a first lead conductor is passed to the periphery of the other winding section of said high-voltage winding, curved along said periphery and leaves at a predetermined position said periphery together with the outer end portion of the conductor of said other winding section of said high-voltage winding serving as a second lead conductor so that said first and second lead conductors may be connected together with an external terminal.

Claim 12

As electrical stationary induction apparatus comprising a magnetic core consisting of at least two main legs, at least a pair of side yokes disposed opposite and parallel to said main legs, and upper and lower yokes to magnetically couple said main legs and said side yokes, a high-voltage winding consisting of at least two winding sections wound separately around said main legs, and a low-voltage winding consisting of winding sections wound around said main legs under said high-voltage winding sections, wherein the outer end portion of the conductor of one winding section of said high-voltage winding serving as a first lead conductor is passed to the periphery of the other winding section of said high-voltage winding, curved along said periphery and leaves at a predetermined position said periphery together with the outer end portion of the conductor of said other winding section of said high-voltage winding serving as a second lead conductor so that said first and second lead conductors may be connected together with an external terminal.

Claim 13

An electrical stationary induction apparatus as claimed in claim 10, wherein there is additionally provided a tertiary winding consisting of winding sections wound around said main legs under said winding sections of said low-voltage winding.

Claim 14

An electrical stationary induction apparatus comprising a magnetic core consisting of at least two main legs, at least a pair of side yokes disposed opposite and parallel to said main legs, and an upper and a lower yokes to magnetically couple said main legs and said side yokes, a shunt winding consisting of at least two winding sections separately wound around said main legs and parallel connected with each other, and a series winding consisting of at least two winding sections wound around said shunt winding, first ends of which winding sections are connected in series with the parallel connection of said respective winding sections of said shunt winding and second ends of which are parallel connected with each other, wherein the outer end portion of the conductor of one winding section of said series winding serving as a first series connection lead is passed to the periphery of the other winding section of said series winding, curved along said periphery and leaves at a predetermined position said periphery together with the outer end portion of the conductor of said other winding section serving as a second series connection lead so that said first and second series connection leads may be cOnnected together with an external high-voltage terminal.

Claim 15

An electrical stationary induction apparatus comprising a magnetic core consisting of at least two main legs, at least a pair of side yokes disposed opposite and parallel to said main legs, and an upper and a lower yokes to magnetically couple said main legs and said side yokes, a shunt winding consisting of at least two winding sections separately wound around said main legs and parallel connected with each other, and a series winding consisting of at least two winding sections wound around said shunt winding, first ends of which winding sections are connected in series with the parallel connection of said respective winding sections of said shunt winding and second ends of which are parallel connected with each other, wherein the outer end portion of the conductor of one winding section of said series winding serving as a first series connection lead is passed to the periphery of the other winding section of said series winding, curved along said periphery and leaves at a predetermined position said periphery together with the outer end portion of the conductor of said other winding section serving as a second series connection lead so that said first and second series connection leads may be cOnnected together with an external high-voltage terminal.

Claim 16

An electrical stationary induction apparatus as claimed in claim 12, wherein there is additionally provided a tertiary winding consisting of at least two winding sections wound around said main legs under said winding sections of said shunt winding.

Claim 17

An electrical stationary induction apparatus as claimed in claim 12, wherein each of said winding section of said series winding consists of two unit coils disposed in a stack and parallel connected with each other, said first and second series connection leads connected with said high-voltage terminal are taken out from between said unit coils disposed in a stack, and each of said winding section of said shunt winding is connected near the top and bottom thereof in parallel with the corresponding one of winding sections of said series winding.