JPH0444122U

JPH0444122U -

Info

Publication number: JPH0444122U
Application number: JP8734190U
Authority: JP
Priority date: 1990-08-21
Filing date: 1990-08-21
Publication date: 1992-04-15

Description

[Brief explanation of the drawing]

第１図Ａ〜Ｄは本考案の実施例の巻線間の接続
を示す接続図、第２図Ａ〜Ｄは第１図の実施例の
電圧関係を示すベクトル図、第３図ａ及びｂはそ
れぞれ本考案の配電用変圧器装置の機械的構造の
異なる例を示す概略構成図、第４図Ａ〜Ｄは本考
案の実施例で用いる接続切換盤の種々の接続状態
を示す説明図、第５図は本考案の他の実施例にお
ける単位変圧器の外観図、第６図は第５図の単位
変圧器の巻線の半部概略縦断面図、第７図は第５
図の単位変圧器の巻線間の接続を示す接続図、第
８図は従来の変圧器の電圧関係を示すベクトル図
、第９図は本考案の実施例における接続切換盤の
各切換端子と各切換端子に接続される２次巻線の
端子及び２次ブツシングとをまとめて示した切換
接続一覧表、第１０図は本考案の他の実施例にお
ける各巻線の位置別の分類と機能別の分類とを示
した巻線分類表である。Ｍｕ……第１の単位変圧器、Ｍｗ……第２の単
位変圧器、Ｃｕ１，Ｃｗ１……１次巻線、Ｃｕ２
，Ｃｗ２……２次巻線、Ｃｕ２１，Ｃｕ２２，Ｃ
ｕ２３，Ｃｗ２１，Ｃｗ２２，Ｃｗ２３……２次
部分巻線、ｔｂ……接続切換盤、ｔ０，ｔ１〜ｔ
１２……切換端子、ｔｃ……切換片。 Figures 1A to D are connection diagrams showing connections between windings in the embodiment of the present invention, Figures 2A to D are vector diagrams showing voltage relationships in the embodiment of Figure 1, and Figures 3a and b. 4 are schematic configuration diagrams showing different examples of the mechanical structure of the distribution transformer device of the present invention, and FIGS. 4A to 4D are explanatory diagrams showing various connection states of the connection switching board used in the embodiment of the present invention, FIG. 5 is an external view of a unit transformer in another embodiment of the present invention, FIG. 6 is a schematic vertical cross-sectional view of half of the winding of the unit transformer in FIG. 5, and FIG.
8 is a vector diagram showing the voltage relationship of a conventional transformer, and FIG. 9 is a connection diagram showing the connections between the windings of the unit transformer shown in the figure. FIG. 9 is a vector diagram showing the voltage relationship of the conventional transformer. A switching connection list showing the terminals and secondary bushings of the secondary windings connected to each switching terminal, FIG. 10 is a classification by position and function of each winding in another embodiment of the present invention. This is a winding classification table showing the classification of the windings. Mu...first unit transformer, Mw...second unit transformer, Cu1, Cw1...primary winding, Cu2
, Cw2... Secondary winding, Cu21, Cu22, C
u23, Cw21, Cw22, Cw23...Secondary partial winding, tb...Connection switching board, t0, t1~t
12...Switching terminal, tc...Switching piece.

Claims

[Claims for Utility Model Registration] (1) A first unit transformer Mu comprising a primary winding Cu1 having a number of turns Nu1 and a secondary winding Cu2 having a number of turns Nu2, and a primary winding having a number of turns Nw1. a second unit transformer Mw including a wire Cw1 and a secondary winding Cw2 having a number of turns Nw2, the turns ratio Nu1/Nu2 of the first unit transformer Mu and the second unit transformer Turns ratio of Mw Nw1/Nw2
are set equal, and the first unit transformer Mu
In a distribution transformer device in which the primary winding Cu1 of the unit transformer Mu and the primary winding Cw1 of the second unit transformer Mw are V-connected, the secondary winding Cu2 of the first unit transformer Mu is Secondary partial winding C with number of turns (1/4) Nu2
u21, a secondary partial winding Cu22 having a number of turns (1/2) Nu2, and a secondary partial winding Cu23 having a number of turns (1/4) Nu2, and 2 of the second unit transformer Mw. The secondary winding Cw2 is a secondary partial winding C having the number of turns (1/4) Nw2.
w21, a secondary partial winding Cw22 having a number of turns (1/2) Nw2, and a secondary partial winding Cw23 having a number of turns (1/4) Nw2; Next partial winding Cu
22 and the middle point of the secondary part winding Cw22 of the second unit transformer Mw are commonly connected and drawn out to the outside as a common connection part n, and the secondary part winding Cw22 of the first unit transformer Mu The winding Cu2 connects the other end U21e of the secondary partial winding Cu21 and one end U22 of the secondary partial winding Cu22, and connects the other end U22e of the secondary partial winding Cu22 to the secondary partial winding Cu22. One end U23 of Cu23 is connected to the other end U2 of the secondary partial winding Cu23.
e and one end U2 of the secondary partial winding Cu21 to the outside, and one end U2 of the secondary partial winding Cu21 and the secondary partial winding Cu2.
The other end U22e of the secondary partial winding Cu22 and the other end U2e of the secondary partial winding Cu23 are connected and pulled out to the outside. Partial winding Cu2
1 and one end U23 of the secondary partial winding Cu23 to the common connection part n, and the other end U of the secondary partial winding Cu21.
21e and one end U22 of the secondary partial winding Cu22.
Further, one end U23 of the secondary partial winding Cu23 is connected to the common connection part n, and the other end U22e of the secondary partial winding Cu22 and the other end U2e of the secondary partial winding Cu23 are connected to each other. and a series-parallel connection configuration in which one end U2 of the secondary partial winding Cu21 is drawn out, respectively, and the second unit transformer Mw The secondary winding Cw2 is connected to one end V2 of the secondary partial winding Cw21 and the second winding Cw2.
The other end V2e of the secondary winding Cw23 is pulled out, and the other end V21e of the secondary winding Cw21 and one end V22 of the secondary winding Cw22 are pulled out.
and the secondary partial winding Cw2.
2 and one end V23 of the secondary partial winding Cw23;
One end V2 of the secondary partial winding Cw21 and one end V22 of the secondary partial winding Cw22 are connected and drawn out, and the other end V22e of the secondary partial winding Cw22 and the other end V2e of the secondary partial winding Cw23 are connected to each other. and connect it to the outside, and connect the secondary partial winding C
The other end V21e of w21 and the secondary partial winding Cw2
3 and one end V23 of the secondary winding Cw21 is connected to the common connection part n, and the other end V21e of the secondary winding Cw21 is connected to one end V22 of the secondary winding Cw22.
22, further connects one end V23 of the secondary partial winding Cw23 to the common connection part n, and connects the other end V22e of the secondary partial winding Cw22 and the other end V2e of the secondary partial winding Cw23. and a series-parallel connection configuration in which one end V2 of the secondary partial winding Cw21 is drawn out to the outside. equipment. (2) The distribution transformer device according to claim 1, further comprising a connection switching board that switches between three connection configurations for each of the secondary windings Cu2 and Cw2. (3) The first unit transformer Mu has a first winding C.
ua and a second winding Cub that shares a magnetic circuit with the first winding Cua, the first winding Cua having a primary winding Cu1a and a number of turns (1/8) Nu2. Secondary winding C
u21a, a secondary partial winding Cu22a having a number of turns (1/4) Nu2, and a secondary partial winding Cu23a having a number of turns (1/8) Nu2, and the second winding Cub is 1 A secondary winding Cu1b and a secondary partial winding C having the number of turns (1/8) Nu2
u21b, a secondary partial winding Cu22b having a number of turns (1/4) Nu2, and a secondary partial winding Cu23b having a number of turns (1/8) Nu2; 1 winding Cwa
and a second winding Cwb sharing a magnetic circuit with the first winding Cwa, the first winding Cwa having a primary winding Cw1a and a secondary winding having a number of turns (1/8) Nw2. partial winding C
w21a, a secondary partial winding Cw22a having a number of turns (1/4) Nw2, and a secondary partial winding Cw23a having a number of turns (1/8) Nw2, and the second winding Cwb is 1 A secondary winding Cw1b and a secondary partial winding C having the number of turns (1/8) Nw2
w21b, a secondary partial winding Cw22b having a turn number (1/4) Nw2, and a secondary partial winding Cw23b having a turn number (1/8) Nw2, The primary windings Cu1a and Cu1b constituting the secondary winding Cu1 are connected in series or in parallel, and the secondary partial winding Cu of the first unit transformer Mu
21 is the secondary partial winding Cu21a and Cu23
A is connected in series with the secondary partial winding Cu of the first unit transformer Mu.
22 are the secondary partial windings Cu22b and Cu22a.
are connected in series, and the secondary partial winding Cu of the first unit transformer Mu
23 is the secondary partial winding Cu23b and Cu21b.
The primary windings Cw1a and Cw1b constituting the primary winding Cw1 of the second unit transformer Mw are connected in series or in parallel, and the second unit transformer Mw The secondary part winding Cw of
21 is the secondary partial winding Cw21a and Cw23.
A is connected in series with the secondary partial winding Cw of the second unit transformer Mw.
22 are the secondary partial windings Cw22b and Cw22a.
are connected in series, and the secondary portion winding Cw of the second unit transformer Mw
23 is the secondary partial winding Cw23b and Cw21b.
The distribution transformer device according to claim 1 or 2, characterized in that the distribution transformer device comprises a transformer device connected in series.