JPS61198610A - On-load tap changer - Google Patents
On-load tap changerInfo
- Publication number
- JPS61198610A JPS61198610A JP4036885A JP4036885A JPS61198610A JP S61198610 A JPS61198610 A JP S61198610A JP 4036885 A JP4036885 A JP 4036885A JP 4036885 A JP4036885 A JP 4036885A JP S61198610 A JPS61198610 A JP S61198610A
- Authority
- JP
- Japan
- Prior art keywords
- tap
- protrusion
- switching means
- rotates
- rotating body
- 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
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/0005—Tap change devices
- H01H9/0027—Operating mechanisms
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野〕
この発明は変圧器等の電圧を調整する負荷時タップ切換
装置、特にその駆動メカニズムの改良に関するものであ
る。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to an on-load tap switching device for adjusting the voltage of a transformer, etc., and particularly to improvements in its drive mechanism.
第８図に負荷時タップ切換装置の結線図を示す。 FIG. 8 shows a wiring diagram of the on-load tap switching device.
ライン側に接続された端子（２）には主タップ巻線（４
）。The terminal (2) connected to the line side has the main tap winding (4
).
第１・第２の粗タップ巻線（６） （８）が接続されて
いる。First and second coarse tap windings (6) and (8) are connected.
粗タップ切換手段（１）は接点（１０１）（１０２）（
１０ｇ）との接触を切り換えて、タップ（２）ｇ４（至
）を切り換える。The coarse tap switching means (1) has contacts (101) (102) (
10g) and switch tap (2) g4 (to).
この粗タップ巻線（６） （８）には、密タップ巻線（
２）が直列に接続されている。密タップ巻線（財）の各
タップは接点αυ〜αりに接続され、密タップ切換手段
■によってタップの切り換えが行なわれる。密タップ切
換手段（７）の共通接続端子（２）は中性点側に接続さ
れている。以上のように、粗タップ切換手段−で大まか
に、密タップ切換手段曽で細かく、タップの切り換えを
行う。The coarsely tapped windings (6) and (8) are connected to the finely tapped windings (6) and (8).
2) are connected in series. Each tap of the close-tap winding is connected to contacts αυ to α, and the taps are switched by close-tap switching means (3). The common connection terminal (2) of the close tap switching means (7) is connected to the neutral point side. As described above, the coarse tap switching means performs rough tap switching, and the fine tap switching means performs fine tap switching.
なお、密タップ切換手段（至）は、負荷電流をしゃ断せ
ず連続的にタップ切り換えを行いうる構造になっている
。しかし、粗タップ切換手段（１）は、タップ間電圧が
大きく通電状態で切り換えを行うことはできない。そこ
で、粗タップを切り換える場合には、密タップ切換手段
（至）を補助接点器に接続し、粗タップ切換手段（１）
を非通電状態にして行う。Note that the close tap switching means (to) has a structure that allows continuous tap switching without interrupting the load current. However, the coarse tap switching means (1) cannot perform switching in a energized state because the voltage between the taps is large. Therefore, when switching the coarse tap, the fine tap switching means (to) is connected to the auxiliary contact device, and the coarse tap switching means (1) is connected to the auxiliary contactor.
This is done with the power off.
この時、負荷への電力供給は、粗タップ切換手段−に並
列接続された補助切換手段（２）を通じて行なわれるの
で、負荷への電力供給は、しゃ断されない。At this time, since power is supplied to the load through the auxiliary switching means (2) connected in parallel to the coarse tap switching means, the power supply to the load is not cut off.
次に、負荷時タップ切換装置の構造を第４図に示す。ウ
オームホイール（至）の回転によって、密タップ切換手
段曽の可動接点■が単位角度ずつ回転し、タップ切り換
えを行う。また、ウオームホイール（至）の回転は、駆
動軸（至）入力軸−を介して、粗タップ切換手段…およ
び補助切換手段−の駆動メカニズム四に伝達される。す
なわち、密タップ切換手段曽の１回転の動作に対応させ
て、粗タップ切換手段−および補助切換手段−を動作さ
せるものである。Next, the structure of the on-load tap switching device is shown in FIG. As the worm wheel (to) rotates, the movable contact (2) of the close tap switching means rotates by a unit angle to perform tap switching. Further, the rotation of the worm wheel is transmitted to the drive mechanism 4 of the coarse tap switching means and the auxiliary switching means via the drive shaft input shaft. That is, the coarse tap switching means and the auxiliary switching means are operated in response to one rotation of the fine tap switching means.
第６因にその駆動メカニズム祷の詳細を示す。The details of the driving mechanism are shown in the sixth factor.
第６図はその平面図である。これらは、実開昭５８−１
０８２４号に示されたものである。この駆動メカニズム
四においては、粗タップ（２）＠四と密タップαη〜四
囚の組合せにより、第１表に示すようにＡＩから轟２６
までのタップｌジションの選択が可能である。FIG. 6 is a plan view thereof. These are Utsukai Showa 58-1
No. 0824. In this drive mechanism 4, by the combination of coarse tap (2)@4 and fine tap αη~4, as shown in Table 1, from AI to Todoro 26
It is possible to select up to 1 tap position.
第 １ 表 切り換え動作を説明すると以下の通りである。Table 1 The switching operation will be explained as follows.
第６図はタップポジション＆１を示している。すなわち
、第８図に示す状態に切り換え手段（１）ｗｅａが切り
換えられている場合（最大タップ）を示す。FIG. 6 shows tap position &1. That is, a case is shown in which the switching means (1) wea is switched to the state shown in FIG. 8 (maximum tap).
ポジションＡ２に切り換える場合には、駆動軸（至）が
単位角度（この場合８６°）回転され、密タップ切換手
段（埒の可動接点（転）は、接点四に接融される。When switching to position A2, the drive shaft (to) is rotated by a unit angle (86° in this case), and the movable contact (to) of the close tap switching means is welded to the contact point 4.
この時、駆動軸（２）の回転は、入力軸−を介して駆動
レバー（至）に伝えられ、これを矢印（２）の方向に８
６゜回転させる（第６図参照）。さらに切り換えを続け
、ポジション＆５から＆６へ切り換わるときには、駆動
レバー−の駆動ピン（財）が歯車（５０Ｋ ）と係合し
つつ回転する。すなわち、駆動ピン−が伝達手段として
作用し、歯車（５０Ｋ） 、回転円盤（５２Ｋ）を半回
転させる。回転円盤（５２Ｋ）には、ローラーを有した
突起（５４Ｋ）が設けられており、補助切換手段−のゼ
ネバギア（５６Ｋ）の凹部（６０Ｋ）と係合し。At this time, the rotation of the drive shaft (2) is transmitted to the drive lever (to) via the input shaft, which is rotated 8 in the direction of the arrow (2).
Rotate it 6 degrees (see Figure 6). The switching continues further, and when switching from position &5 to &6, the drive pin of the drive lever rotates while engaging with the gear (50K). That is, the drive pin acts as a transmission means and rotates the gear (50K) and rotating disk (52K) by half a rotation. The rotating disc (52K) is provided with a protrusion (54K) having a roller, which engages with a recess (60K) of the Geneva gear (56K) of the auxiliary switching means.
これを回転させる。ゼネバギア（５６Ｋ）の回転は。Rotate this. What is the rotation of Geneva Gear (56K)?
第５図に示す出力軸（５８Ｋ）を動かし、補助切換手段
（至）の可動接点を接点（１０１Ｋ’）に接触させる（
第８図ならびに第１表参照］。さらに切り換えを続け。Move the output shaft (58K) shown in Figure 5 and bring the movable contact of the auxiliary switching means (to) into contact with the contact (101K') (
See Figure 8 and Table 1]. Continue switching.
ポジション應１０から７ｉ １１へ切り換わるときには
。When switching from position ㇉10 to 7i 11.
駆動レバーに）の駆動ピン−が歯車員と係合しつつ回転
する。したがって、回転体である歯車（至）１回転円盤
−が回転し、突起−によってゼネバギア輸が回転され、
出力軸−を回転させる。出力軸−の回転によって、粗タ
ップ切換手段四は、接点（１０１）から（１０２）へと
切り換ねる。この時には、密タップ切換手段曽の可動接
点罎は補助接点印に接触されており、粗タップ切換手段
（１）に電流は流れていない。さらに切り換えを続け、
ポジション應２６までくると密タップ切換手段（７）の
接点に余裕があるにも拘らずそれ以上切り換えることは
できなくなる。なぜなら、それ以上回転させると、駆動
ピン−が歯車員を回転させ、補助切換手段（ロ）を切り
換ある。The drive pin of the drive lever rotates while engaging with the gear member. Therefore, the gear (to), which is a rotating body, rotates once, and the Geneva gear is rotated by the protrusion.
Rotate the output shaft. By the rotation of the output shaft, the coarse tap switching means 4 switches from the contact point (101) to the contact point (102). At this time, the movable contact of the fine tap changeover means is in contact with the auxiliary contact mark, and no current flows through the coarse tap changeover means (1). Continue to switch,
When the close tap switching means (7) reaches the position 26, it is no longer possible to switch the close tap switching means (7) even though there is sufficient contact. This is because if the gear is rotated further, the drive pin rotates the gear member and switches the auxiliary switching means (b).
ところが、従来の負荷時タップ切換装置は次のきない。 However, the conventional on-load tap changer has the following disadvantages.
すなわち、密タップ切換手段のコンタクト数をＮ、粗タ
ップ巻線の数をｎとすれば、理論上はＮｘ（ｎ＋１）
のタップポジションを確保できる。にも拘らず、ＮＸ
（ｎ＋１）−Ｎ／２のタップポジションしか確保するこ
とができなかった。In other words, if the number of contacts of the fine tap switching means is N and the number of coarse tap windings is n, then theoretically Nx(n+1)
You can secure the tap position. Nevertheless, NX
Only (n+1)-N/2 tap positions could be secured.
第二に、歯車、回転円盤によって構成される回転体を２
個必要とした。すなわち、粗タップ切換手段と補助切換
手段用に、それぞれ回転体を設けねばならず、構造が複
雑であった。また、装置の大型化を招いていた。Second, the rotating body composed of gears and rotating disks is
I needed one. That is, a rotating body must be provided for each of the coarse tap switching means and the auxiliary switching means, resulting in a complicated structure. Moreover, this led to an increase in the size of the device.
この発明の目的は、上記の問題点を解決して、小形、簡
素でかつ、多くのタップポジションを得ることができる
負荷時タップ切換装置を提供することである・
【問題点を解決するための手段フ
この発明では、駆動レバーに第１・第ｚｍ手段を設けて
いる。第１の伝達手段は、密タップ切換手段が補助接点
に切り換えられている状態から１単位角度回転するとき
に、回転体と係合する位置に設けた。第２の伝達手段は
、第１の伝達手段とは反対方向に１単位角度回転すると
きに１回転体と係合する位置に設けている。また、この
回起を３けた。The purpose of this invention is to solve the above-mentioned problems and provide an on-load tap switching device that is small, simple, and capable of obtaining many tap positions. Means In this invention, the drive lever is provided with the first and zmth means. The first transmission means is provided at a position where it engages with the rotating body when the close tap switching means rotates by one unit angle from the state where it is switched to the auxiliary contact. The second transmission means is provided at a position where it engages with the rotating body when the second transmission means rotates by one unit angle in a direction opposite to that of the first transmission means. Also, this turnaround was triple digits.
〔作用）
回転体の第１の面に設けられた第１の突起は、回転体の
回転によって、粗タップ切換手段を動作させる。また、
同様に、回転体の第２面の第２の突起は、補助切換手段
を動作させる。第１・第２の伝達手段は、前述のような
位置に設けられているので、上記の両動作は、補助接点
への切り換え時をはさんで行なわれることになる。すな
わち、粗タップ切換動作→補助接点への切り換え一粗タ
ツブ補助切換動作の順にあるいはその逆に行なわれる。[Operation] The first protrusion provided on the first surface of the rotary body operates the coarse tap switching means by rotation of the rotary body. Also,
Similarly, the second protrusion on the second surface of the rotating body operates the auxiliary switching means. Since the first and second transmission means are provided at the positions described above, both of the above operations are performed at the time of switching to the auxiliary contact. That is, the coarse tap switching operation is performed in the order of switching to the auxiliary contact and then the coarse tab auxiliary switching operation, or vice versa.
〔実施例フ
第１図にこの発明の一実施例を示す。第２図はその側断
面図である。駆動レバー−には第１の伝達手段としての
ピン（６２）ならびに第２の伝達手段としてのピ″Ａ（
７）が設けられている。この実施例において、回転体は
歯車−と回転円盤−とから構成されている。回転円盤−
の裏面すなわち第１の面（６８ａ）には、ローラーを備
えた第１の突起四が設けられ、第２の面（６８ｂ）には
、第２の突起（７０Ｋ）が設けられている。[Embodiment] FIG. 1 shows an embodiment of the present invention. FIG. 2 is a side sectional view thereof. The drive lever has a pin (62) as a first transmission means and a pin "A" (as a second transmission means).
7) is provided. In this embodiment, the rotating body is composed of a gear and a rotating disk. Rotating disc-
A first protrusion 4 provided with a roller is provided on the back surface (68a), and a second protrusion (70K) is provided on the second surface (68b).
この実施例によれば、第２表に示すように＆１〜Ａ ２
９までのタップポジションの選択が可能であ第 ２
表
切り換え動作を説明すると以下の通りである。According to this example, &1~A2 as shown in Table 2
It is possible to select up to 9 tap positions.
The table switching operation will be explained as follows.
第１図はタップポジション／Ｌｌを示している。すなわ
ち１．、第８図に示す状態に切り換え手段（７）曽−が
切り換えられている場合（蜂大タップ）を示す。FIG. 1 shows the tap position /Ll. That is, 1. , shows a case where the switching means (7) is switched to the state shown in FIG. 8 (bee large tap).
ポジション＆２に切り換える場合には、駆動軸（２）が
単位角度（この場合８６°）回転され、密タップ切換手
段曽の可動接点（至）は、接点＠に接触される。When switching to position &2, the drive shaft (2) is rotated by a unit angle (86° in this case), and the movable contact (to) of the close tap switching means is brought into contact with the contact @.
この時、駆動軸（至）の回転は、入力軸−を介して駆動
レバー−Ｃζ伝えられ、これを矢印の）の方向に８６゜
回転させる（第１図参照）。さらに切り換えを続ケｓ
Ｍ ５ シＥ ：ｉ＆ ９ カら＆１０へ切り換やると
きには、駆動レバー−の駆動ピン（６２Ｋ）が歯車−と
係合し２つ回転する。すなわち、歯車−１回転円盤−を
半回転させや。こ９時、回転円盤−の突起（７ＯＫ）は
、補助切換手段（２）の第２のゼネバギア（５６Ｋ）の
凹部（６ＯＫ）と係合しこりを回転させる。At this time, the rotation of the drive shaft (to) is transmitted through the input shaft to drive lever Cζ, which is rotated by 86 degrees in the direction of the arrow (see FIG. 1). Continue switching further.
M5 C: When switching from i & 9 to &10, the drive pin (62K) of the drive lever engages with the gear and rotates two times. In other words, make a gear - a disk that rotates once - half a turn. At 9 o'clock, the protrusion (7 OK) of the rotating disk engages with the recess (6 OK) of the second Geneva gear (56K) of the auxiliary switching means (2) to rotate the lump.
ゼネバギア（５６Ｋ）の回転は、第２図Ｇと示す出力軸
（５８Ｋ）を呻かし、補助切換手段（財）の可動接点を
接点（ＩＯＩＫ’）に接触させる（第８因ならびに第２
表参照）、、なお、ポジションＡ １０では密タップ切
換チ態からポジションＡｌｌへ切り換えるときには、駆
動レバー−の駆動ピン霞が歯車−と係合しつつ回転する
。この時も、前記同様回転円盤−が半回転するが、突起
（７ＯＫ）は第２のゼネバギア （５６Ｋ）とは係合し
ない。一方１回転円盤四の裏面に設けられた突起−が、
第１のゼネバギア（５６Ｋ）の下に設けられた第２のゼ
ネバギア（財）と係合して、これを回転させる（第２図
参照）。ゼネバギア■は、出力軸−を回転さ讐、粗タッ
プ切換手段叫の接点を（”１０１ ）から（１０２）へ
切り換える（第８図ならびに第２表参照）。この時には
、密タップ切換手段（７）の可動接点は補助接点頓に接
触されており、粗；ツブ切換手段（１）に電流は流れて
いない。したがって、切り−えによるアークの発生はな
い。さらに切り換えを続ければ、タップポジション嵐２
９まで切り換えをすることができる。The rotation of the Geneva gear (56K) causes the output shaft (58K) shown as G in FIG.
(See table).In addition, at position A10, when switching from the close tap switching state to position All, the drive pin of the drive lever rotates while engaging with the gear. At this time as well, the rotating disk rotates half a rotation as described above, but the protrusion (7OK) does not engage with the second Geneva gear (56K). On the other hand, the protrusion provided on the back side of the one-rotation disk 4 is
It engages with the second Geneva gear provided below the first Geneva gear (56K) to rotate it (see Figure 2). The Geneva gear rotates the output shaft and switches the contacts of the coarse tap switching means (7) from (101) to (102) (see Figure 8 and Table 2). ) is in contact with the auxiliary contact, and no current flows through the rough knob switching means (1).Therefore, no arc is generated due to switching.If switching continues, the tap position storm will change. 2
You can switch up to 9.
この発明によれば・以下の効果を′得ることができる。According to this invention, the following effects can be obtained.
より多くのタップポジションを確保できる。すなわち、
密タップ切換手段のコンタクト数をＮ、粗タップ巻線の
歓をｎとすれば、ＮＸ（ｎ＋１３−１のタップ−ジショ
ンを確保できる。従来はＮｘ（ｎ＋１）−Ｎ／２ Ｌか
タップポジションを確保できなかったこと督こ比べれば
、密タップ切換手段のコンタクトを有効に利用しうる点
１２：にいて、大きな効果をもつものである。More tap positions can be secured. That is,
If the number of contacts in the fine tap switching means is N, and the number of contacts in the coarse tap winding is n, then a tap position of NX(n+13-1) can be secured. Conventionally, the tap position is Nx(n+1)-N/2L or Comparing the points that could not be secured, point 12: The contact of the close tap switching means can be used effectively, which has a great effect.
第二に１回転体は１個でよく、構造を簡素なもの回転体
で、突馬することができる。したがって、構造が簡素と
なって小形化が図れるばかりでなく、信＠注の高い装置
を提供することができる。Second, only one rotating body is required, and a rotating body with a simple structure can be used as a single rotating body. Therefore, not only can the structure be simplified and downsized, but also a highly reliable device can be provided.
第１図はこの発明の一実施例を示す図、第２図は第１図
の側断面図、第８図は負荷時タップ切換＃ｊＬ１ｉｌｉ
の結線図、第４図は負荷時タップ切換装置の構造を示す
図、第５図は従来の負荷時タップ切換装置の駆動メカニ
ズムを示す図、第６図はその平面図である。
（６１Ｆ８）は粗タップ巻線、（４）は粗タップ切換手
段、（財）は密タップ巻線、曽は密タップ切換手段、（
２）は補助切換手段、囚は補助接点、−は駆動レバー。
−は第１のゼネバギア、 （５６Ｋ）は第２のゼネバギ
ア、 ｆｆｌ （６２Ｋ）はピン、−は歯車、＠は回転
円盤。
（７１１１は第１の突起％ （７ＯＫ）は第２の突起で
ある。
なお、各図中同一符号は同−又は相当部分を示す。FIG. 1 is a diagram showing an embodiment of the present invention, FIG. 2 is a side sectional view of FIG. 1, and FIG.
FIG. 4 is a diagram showing the structure of the on-load tap changing device, FIG. 5 is a diagram showing the drive mechanism of the conventional on-load tap changing device, and FIG. 6 is a plan view thereof. (61F8) is a coarse tap winding, (4) is a coarse tap switching means, (Foundation) is a fine tap winding, So is a fine tap switching means, (
2) is the auxiliary switching means, the auxiliary contact is the auxiliary contact, and the - is the drive lever. - is the first Geneva gear, (56K) is the second Geneva gear, ffl (62K) is the pin, - is the gear, @ is the rotating disk. (7111 is the first protrusion % (7OK) is the second protrusion. In each figure, the same reference numerals indicate the same or equivalent parts.
Claims (3)
所定の単位角度回転ごとに密タップ巻線のタップならび
に補助接点を選択して切り換える密タップ切換手段、 前記駆動軸と連動して回転する駆動レバー、駆動レバー
上に設けられ、密タップ切換手段が補助接点を選択して
いる状態から１単位角度第１の方向へ回転するとき回転
体と係合する第１の伝達手段、駆動レバー上に設けられ
、密タップ切換手段が補助接点を選択している状態から
前記第１の方向とは逆方向に１単位角度回転するとき回
転体と係合する第２の伝達手段、 回転体の第１の面に設けられた第１の突起、回転体の第
２の面に設けられた第２の突起、回転体の回転によつて
第１の突起と係合し回転する粗タップ切換手段、 回転体の回転によつて第２の突起と係合し回転する補助
切換手段、 を備えたことを特徴とする負荷時タップ切換装置。(1) Coarse tap winding A fine tap winding connected in series to the coarse tap winding, fine tap switching means for selecting and switching the taps and auxiliary contacts of the fine tap winding every predetermined unit angle rotation of the drive shaft; a drive lever that rotates in conjunction with the drive shaft, and is provided on the drive lever and engages with the rotating body when the close tap switching means rotates by one unit angle in a first direction from a state in which the auxiliary contact is selected; a first transmission means provided on the drive lever and engaged with the rotating body when the close tap switching means rotates by one unit angle in a direction opposite to the first direction from a state in which the auxiliary contact is selected; A second transmission means, a first protrusion provided on the first surface of the rotating body, a second protrusion provided on the second surface of the rotating body, and a second protrusion that engages with the first protrusion by rotation of the rotating body. 1. A tap switching device under load, comprising: a rough tap switching device that rotates together with the coarse tap switching device; and an auxiliary switching device that engages and rotates with a second protrusion as a rotating body rotates.
所定間隔をもつて設けられた複数個のピンを備え 回転体は前記複数個のピンによつて回転させられる歯車
と、該歯車と連動して回転し第１・第２の面を有する回
転円盤を備えていること、を特徴とする特許請求の範囲
第１項記載の負荷時タップ切換装置。(2) The first and second transmission means include a plurality of pins provided at a predetermined interval within the predetermined unit angle, and the rotating body is a gear rotated by the plurality of pins; The on-load tap changing device according to claim 1, further comprising a rotating disk that rotates in conjunction with the gear and has first and second surfaces.
は第１のローラーに対し１８０°対向して設けられた第
２のローラーを備え、 粗タップ切換手段は第１のローラーと係合する第１のゼ
ネバギアを備え、 補助切換手段は第１のゼネバギアと同軸配置され第２の
ローラーと係合する第２のゼネバギアを備えていること
、 を特徴とする特許請求の範囲第１項または第２項記載の
負荷時タップ切換装置。(3) The first protrusion is provided with a first roller, the second protrusion is provided with a second roller provided 180° opposite to the first roller, and the coarse tap switching means is provided with the first roller. Claim 1, characterized in that: the auxiliary switching means comprises a second Geneva gear disposed coaxially with the first Geneva gear and engaged with the second roller. The on-load tap switching device according to item 1 or 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4036885A JPS61198610A (en) | 1985-02-27 | 1985-02-27 | On-load tap changer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4036885A JPS61198610A (en) | 1985-02-27 | 1985-02-27 | On-load tap changer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61198610A true JPS61198610A (en) | 1986-09-03 |
| JPH0548605B2 JPH0548605B2 (en) | 1993-07-22 |
Family
ID=12578697
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4036885A Granted JPS61198610A (en) | 1985-02-27 | 1985-02-27 | On-load tap changer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61198610A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108064409A (en) * | 2015-04-21 | 2018-05-22 | 欧玛嘉宝A.I.E.科技公司 | Load ratio bridging switch device |
-
1985
- 1985-02-27 JP JP4036885A patent/JPS61198610A/en active Granted
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108064409A (en) * | 2015-04-21 | 2018-05-22 | 欧玛嘉宝A.I.E.科技公司 | Load ratio bridging switch device |
| CN108064409B (en) * | 2015-04-21 | 2019-08-30 | 欧玛嘉宝A.I.E.科技公司 | Load ratio bridging switch device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0548605B2 (en) | 1993-07-22 |
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