JPH0227716U - - Google Patents
Info
- Publication number
- JPH0227716U JPH0227716U JP10633988U JP10633988U JPH0227716U JP H0227716 U JPH0227716 U JP H0227716U JP 10633988 U JP10633988 U JP 10633988U JP 10633988 U JP10633988 U JP 10633988U JP H0227716 U JPH0227716 U JP H0227716U
- Authority
- JP
- Japan
- Prior art keywords
- phase
- winding
- terminal
- connection
- switching
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Structure Of Telephone Exchanges (AREA)
- Ac-Ac Conversion (AREA)
Description
第１図は本考案の実施例における変圧器の巻線
間の接続を示す接続図、第２図は本考案の第１の
接続を行つた場合の接続切換盤の状態を示す正面
図、第３図は本考案の第１の接続を行つた場合の
変圧器のベクトル図、第４図は本考案の第２の接
続を行つた場合の接続切換盤の状態を示す正面図
、第５図は本考案の第２の接続を行つた場合の変
圧器のベクトル図、第６図は従来の変圧器野ベク
トル図、第７図は従来の他の変圧器の巻線間接続
を示す接続図である。
Ｃｕ１，Ｃｖ１，Ｃｗ１，…１次巻線、Ｃｕ２
１，Ｃｖ２１，Ｃｗ２１…第１の３相２次巻線、
Ｃｕ２２，Ｃｖ２２，Ｃｗ２２…第２の３相２次
巻線、Ｕ１，Ｖ１，Ｗ１…１次端子、Ｕ２１，Ｖ
２１，Ｗ２１，Ｕ２２，Ｖ２２，Ｗ２２…２次端
子、ｔ…接続切換盤、ｔ１〜ｔ１２…切換端子、
ｔｃ…切換片。
Fig. 1 is a connection diagram showing the connection between the windings of a transformer in an embodiment of the present invention, Fig. 2 is a front view showing the state of the connection switching board when the first connection of the present invention is made; Figure 3 is a vector diagram of the transformer when the first connection of the present invention is made, Figure 4 is a front view showing the state of the connection switch board when the second connection of the present invention is made, and Figure 5. is a vector diagram of the transformer when the second connection of the present invention is made, FIG. 6 is a vector diagram of a conventional transformer, and FIG. 7 is a connection diagram showing the connection between windings of another conventional transformer. It is. Cu1, Cv1, Cw1,...Primary winding, Cu2
1, Cv21, Cw21...first three-phase secondary winding,
Cu22, Cv22, Cw22...Second three-phase secondary winding, U1, V1, W1...Primary terminal, U21, V
21, W21, U22, V22, W22...Secondary terminal, t...Connection switching board, t1-t12...Switching terminal,
tc...Switching piece.
Claims (1)
と第１及び第２の３相２次巻線とを有する配電用
３相変圧器において、 前記第１の３相２次巻線はデルタ結線され、 前記第２の３相２次巻線の各相の巻線の巻始め
端子及び巻終り端子は接続切換盤の切換端子に接
続され、 前記切換端子盤は、切換端子間を接続する切換
片の取付け位置を変えることにより、前記第２の
３相２次巻線の各相の巻線の巻き始め端子及び巻
き終り端子の隣接相との接続を前記第１の３相２
次巻線と同様にする第１の接続と、前記第１の３
相２次巻線と反対にする第２の接続とに切換える
ように構成され、 前記第２の接続がされたときに前記第１の３相
２次巻線の端子の誘起電圧と第２の３相２次巻線
の端子の誘起電圧とが接地点に関して点対称のベ
クトルを構成するように前記第１の３相２次巻線
の一端子と第２の３相２次巻線の一端子とが接地
されていることを特徴とする配電用３相変圧器。[Claims for Utility Model Registration] A three-phase power distribution transformer having a star-connected or delta-connected three-phase primary winding and first and second three-phase secondary windings, The phase secondary windings are delta connected, the winding start terminal and winding end terminal of each phase winding of the second three-phase secondary winding are connected to a switching terminal of a connection switching board, and the switching terminal board is connected to a switching terminal of a connection switching board. By changing the mounting position of the switching piece that connects the switching terminals, the connection between the winding start terminal and the winding end terminal of each phase winding of the second three-phase secondary winding with the adjacent phase can be changed. 1 3 phase 2
a first connection similar to that of the next winding;
and a second connection that is opposite to the phase secondary winding, and when the second connection is made, the induced voltage at the terminal of the first three-phase secondary winding and the second one terminal of the first three-phase secondary winding and one terminal of the second three-phase secondary winding so that the induced voltage at the terminal of the three-phase secondary winding constitutes a point-symmetrical vector with respect to the grounding point. A three-phase power distribution transformer characterized in that its terminals are grounded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10633988U JPH0632663Y2 (en) | 1988-08-11 | 1988-08-11 | Three-phase transformer for power distribution |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10633988U JPH0632663Y2 (en) | 1988-08-11 | 1988-08-11 | Three-phase transformer for power distribution |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0227716U true JPH0227716U (en) | 1990-02-22 |
| JPH0632663Y2 JPH0632663Y2 (en) | 1994-08-24 |
Family
ID=31339756
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10633988U Expired - Lifetime JPH0632663Y2 (en) | 1988-08-11 | 1988-08-11 | Three-phase transformer for power distribution |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0632663Y2 (en) |
-
1988
- 1988-08-11 JP JP10633988U patent/JPH0632663Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0632663Y2 (en) | 1994-08-24 |
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