JPH0374022B2 - - Google Patents
Info
- Publication number
- JPH0374022B2 JPH0374022B2 JP8854484A JP8854484A JPH0374022B2 JP H0374022 B2 JPH0374022 B2 JP H0374022B2 JP 8854484 A JP8854484 A JP 8854484A JP 8854484 A JP8854484 A JP 8854484A JP H0374022 B2 JPH0374022 B2 JP H0374022B2
- Authority
- JP
- Japan
- Prior art keywords
- contact
- silver
- silver coating
- ring
- shaped
- 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.)
- Expired
Links
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 36
- 229910052709 silver Inorganic materials 0.000 claims description 36
- 239000004332 silver Substances 0.000 claims description 36
- 238000000576 coating method Methods 0.000 claims description 26
- 239000011248 coating agent Substances 0.000 claims description 22
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- 229910000881 Cu alloy Inorganic materials 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 239000010949 copper Substances 0.000 claims description 3
- 238000009713 electroplating Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 238000005259 measurement Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009760 electrical discharge machining Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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
- H01H9/0016—Contact arrangements for tap changers
Description
【発明の詳細な説明】
〔産業上の利用分野〕
この発明は、固定接触片のほぼ平らな表面で所
定のローリ軌跡に沿つて転がる可動接触担持体で
案内される少なくとも１個の円筒状接触ローラを
備えたる、変圧器の負荷選択器に対する実質上銅
または銅合金製の接触装置、特に電圧調整変圧器
の負荷時タツプ選択器の接触装置に関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention provides at least one cylindrical contact guided by a movable contact carrier that rolls along a predetermined roller trajectory on a substantially flat surface of a fixed contact piece. The present invention relates to contact devices substantially made of copper or copper alloys for load selectors of transformers, in particular contact devices for on-load tap selectors of voltage regulating transformers, with rollers.
この種の接触装置は、***特許第2910161号明
細書により公知である。
A contact device of this type is known from German Patent No. 2910161.
変圧器の負荷選択器では、負荷選択器の接触子
で僅かな接触抵抗した生じないようにすることが
要求されている。この要求は、変圧器を出荷する
時、変圧器の特性値を調べるため、通常変圧器の
巻線を低電圧の低電流で通電試験するのに必要で
ある。ここでは、変圧器に組み込んだ負荷選択器
の接触子の接触抵抗によつて測定結果に誤差が生
じる。何故なら、測定に使用する低電圧または低
電流が負荷選択器のこれ等の接触子に必ずある異
物被膜を貫通するのに不充分であるからである。
変圧器を後で運転するのに、負荷選択器の接触子
（例えば銅または銅合金の接触子）に通常生じる
接触抵抗は問題でない。何故なら、正規の運転電
流のためこれ等の接触子にある異物被膜も貫通す
るからである。 In a load selector of a transformer, it is required that a slight contact resistance is not generated in the contacts of the load selector. This requirement is necessary when the transformer windings are normally tested with low voltage and low current in order to check the characteristic values of the transformer before shipping the transformer. Here, errors occur in the measurement results due to the contact resistance of the contacts of the load selector built into the transformer. This is because the low voltages or low currents used in the measurements are insufficient to penetrate the foreign film that is necessarily present on these contacts of the load selector.
For subsequent operation of the transformer, the contact resistance that normally occurs in the load selector contacts (eg copper or copper alloy contacts) is not a problem. This is because the normal operating current also penetrates the foreign material coating on these contacts.
接触装置を銀で電気メツキすること、あるいは
銀被膜を接触装置に施すことによつて救済策が呈
示されている。しかし、この接触装置は一方で機
能の点から接触領域でかなり薄い銀の被膜しか必
要でなく、他方で構造上の理由から電気メツキが
しばしば不可能であると言うことに注意する必要
がある。その外、この接触装置の場合、負荷時に
切り換える必要のある接触子も一部問題になる。
そのため、接触子材料として銀は特に適していな
いこもとも知られている。 Remedies have been offered by electroplating the contact device with silver or by applying a silver coating to the contact device. However, it should be noted that this contact device, on the one hand, requires only a fairly thin silver coating in the contact area from a functional point of view, and on the other hand, electroplating is often not possible for structural reasons. In addition, some problems with this contact device include the contacts that have to be switched under load.
Therefore, it is also known that silver is not particularly suitable as a contact material.
この発明の課題は、負荷選択器が極めた小さい
接触抵抗を有し、その場合、銀を全体的に被覆な
いしは接触子に銀メツキを施すことのない、冒頭
に述べた接触装置を改良することにある。
The object of the invention is to improve the contact device mentioned at the outset, in which the load selector has an extremely low contact resistance, and in this case there is no need for a complete silver coating or for the contacts to be silver-plated. It is in.
上記の課題は、この発明により、冒頭に述べた
接触装置の場合、製造当初の状態で、接触ローラ
の外面に対して僅かに突き出た薄い少なくとも一
つのリング状の部分銀被膜をこの外面に設け、固
定接触片の表面で接触ローラのリング状の銀被膜
が通るロール軌跡のほぼ中央に同じように表面の
突き出た薄い銀被膜が設けてあり、接触装置の静
止位置で接触ローラのリング状銀被膜が固定接触
片の表面の部分銀被膜に接触し、銀の膜厚が約５
〜50μｍであることによつて解決されている。
The above-mentioned problem has been solved by the present invention, in the case of the contact device mentioned at the outset, in which the outer surface of the contact roller is provided with at least one thin ring-shaped partial silver coating which projects slightly relative to the outer surface of the contact roller in the initial state of manufacture. , on the surface of the fixed contact piece, a thin silver coating with a similar protruding surface is provided approximately in the center of the roll locus along which the ring-shaped silver coating of the contact roller passes, and when the contact device is at rest, the ring-shaped silver coating of the contact roller The film is in contact with the partial silver film on the surface of the fixed contact piece, and the silver film thickness is about 5
This is solved by having a thickness of ~50 μm.
この発明によつて得られる利点は、何よりも、
例えば接触装置全体に銀の電気メツキを施すよう
な多大な費用が不要で、極めて薄い銀を部分的に
被覆することにより、負荷選択器の接触子が非常
に小さい接触抵抗を有する点にある。この場合、
銀の上に銀を接触させて達成される、負荷選択器
の接触片の実際の接触位置のみ、つまり静止位置
で接触子が実質上互いに重なるところでしか非常
に小さい接触抵抗を生じさせないことが重要であ
る。この利点は、単に銀を著しく節約するだけで
なく、負荷通電状態で切換える必要がある限り、
切換特性が銀によつて不利な影響を受けない点に
ある。数回の切換後に接触個所に付けた銀が消失
し、これ等の接触子は開閉効率に合理的であると
知られる材料の組み合わせで動作する。
The advantages obtained by this invention are, above all,
The load selector contacts have a very low contact resistance due to the partial coating with very thin silver, without the need for the large expense of, for example, electroplating the entire contact device with silver. in this case,
It is important that only the actual contact position of the load selector contact pieces, achieved by contacting silver on silver, produces a very small contact resistance, i.e. only where the contacts practically overlap each other in the rest position. It is. This advantage is not only a significant silver saving, but also a
The switching characteristics are not adversely affected by silver. After several switchings the silver on the contact points disappears and these contacts operate with material combinations known to be reasonable for switching efficiency.
他方、接触子を無負荷で切り換えるとき、非常
に薄い銀の部分被膜は、転がり動作のため接触時
に実際上機械的な摩耗を受けない。ここでは、付
着させた非常に薄い銀の部分被膜が剥げない。 On the other hand, when switching the contact without load, the very thin silver partial coating undergoes virtually no mechanical wear during contact due to the rolling action. Here, the deposited very thin partial silver coating does not come off.
接触片を銀で部分的に被覆することは、放電加
工法によつて特に有利に行える。その場合、実質
上銀で形成され、正極を構成する電極を振動さ
せ、被覆すべき接触片に近づける。所望の広さの
面と約５〜50μｍの所望の膜厚を簡単に作製でき
る。膜厚の必然的な不均一を後加工することは不
要である。この場合、特に有利な膜厚５〜50μｍ
は、銀の電気メツキで形成できる範囲にある。こ
のことは、接触子の機能に対して充分満足の行く
ものである。上記の値以上の膜厚を付着させるこ
とも、時として合理的で、その場合、膜厚がメツ
キに必要な膜厚以下である限り有効である。 Partial coating of the contact piece with silver can be carried out particularly advantageously by electrical discharge machining methods. In that case, the electrode, which is made essentially of silver and constitutes the positive electrode, is vibrated and brought close to the contact piece to be coated. A surface of a desired width and a desired film thickness of about 5 to 50 μm can be easily produced. There is no need to post-process the inevitable non-uniformity of the film thickness. In this case, a particularly advantageous film thickness of 5 to 50 μm
is in the range that can be formed by silver electroplating. This is fully satisfactory for the function of the contact. It is sometimes reasonable to deposit a film thickness greater than the above values, and in that case it is effective as long as the film thickness is less than or equal to the thickness required for plating.
以下に、この発明による接触装置を図面に基づ
きより詳しく説明する。
Below, the contact device according to the present invention will be explained in more detail based on the drawings.
可動接触担持体１によつて案内される円筒状の
接触ローラ２は固定接触片３のほぼ平らな表面上
を所望のロール軌跡６に沿つて転がる。この円筒
状の接触ローラ２はその外面の両端にそれぞれ一
つのリング状の銀被膜４，５を保有する。これ等
の被膜は外面に対して僅かに、つまり１mmの数分
の１だけ突き出ている。同様に、固定接触片３の
表面には、接触ローラ２のリング状の銀被膜４，
５が通るロール軌跡のほぼ中央にそれぞれ一つの
部分的な銀被膜７，８が付けてあり、接触ローラ
２がその動作位置にあるとこれ等の被膜上に載
る。 A cylindrical contact roller 2 guided by a movable contact carrier 1 rolls on a substantially flat surface of a fixed contact piece 3 along a desired roll trajectory 6 . This cylindrical contact roller 2 has a ring-shaped silver coating 4, 5 on each end of its outer surface. These coatings protrude slightly, ie by a fraction of a millimeter, relative to the outer surface. Similarly, the ring-shaped silver coating 4 of the contact roller 2 is coated on the surface of the fixed contact piece 3.
Approximately in the center of the roll path 5 passes, a partial silver coating 7, 8 is applied in each case, on which the contact roller 2 rests in its operating position.
添付図は、この発明による接触装置の模式斜視
図である。
図中参照符号：１……可動接触担持体、２……
接触ローラ、３……固定接触片、４，５……リン
グ状銀被膜、６……ロール軌跡、７，８……銀被
膜。
The attached figure is a schematic perspective view of a contact device according to the invention. Reference numbers in the figure: 1...Movable contact carrier, 2...
Contact roller, 3... fixed contact piece, 4, 5... ring-shaped silver coating, 6... roll locus, 7, 8... silver coating.
Claims (1)
軌跡に沿つて転がる可動接触担持体で案内される
少なくとも１個の円筒状接触ローラを備えたる、
変圧器の負荷選択器に対する実質上銅または銅合
金製の接触装置において、製造当初の状態で、接
触ローラ２の外面に対して僅かに突き出た薄い少
なくとも一つのリング状の部分銀被膜４，５をこ
の外面に設け、固定接触片３の表面で接触ローラ
のリング状銀被膜４，５が通るロール軌跡のほぼ
中央に同じように表面の突き出た薄い銀被膜７，
８が設けてあり、接触装置の静止位置で接触ロー
ラのリング状銀被膜が固定接触片の表面の部分銀
被膜に接触し、銀の膜厚が約５〜50μｍであるこ
とを特徴とする接触装置。 ２ 接触ローラ２は外面の両端にそれぞれリング
状の銀被膜４，５を有し、これに応じて、固定接
触片３は二つの部分銀被膜７，８を有することを
特徴とする特許請求の範囲第１項に記載の接触装
置。Claims: 1. At least one cylindrical contact roller guided by a movable contact carrier that rolls along a predetermined roll trajectory on a substantially flat surface of a fixed contact piece,
In a contact device substantially made of copper or a copper alloy for a load selector of a transformer, in the original state there is at least one thin ring-shaped partial silver coating 4, 5 projecting slightly with respect to the outer surface of the contact roller 2. is provided on this outer surface, and on the surface of the fixed contact piece 3, a thin silver coating 7, which similarly protrudes from the surface, is provided approximately in the center of the roll locus along which the ring-shaped silver coatings 4, 5 of the contact roller pass.
8 is provided, the ring-shaped silver coating of the contact roller contacts the partial silver coating on the surface of the fixed contact piece in the rest position of the contact device, and the thickness of the silver coating is about 5 to 50 μm. Device. 2. The contact roller 2 has ring-shaped silver coatings 4, 5 on both ends of its outer surface, and correspondingly, the fixed contact piece 3 has two partial silver coatings 7, 8. A contact device according to scope 1.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19833316865 DE3316865C2 (en) | 1983-05-07 | 1983-05-07 | Contact arrangement consisting essentially of copper or a copper alloy for load selectors of step transformers |
| DE3316865.2 | 1983-05-07 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59208710A JPS59208710A (en) | 1984-11-27 |
| JPH0374022B2 true JPH0374022B2 (en) | 1991-11-25 |
Family
ID=6198515
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8854484A Granted JPS59208710A (en) | 1983-05-07 | 1984-05-04 | Contacor for load tap selector of on-load tap changing transformer |
Country Status (5)
| Country | Link |
|---|---|
| JP (1) | JPS59208710A (en) |
| BE (1) | BE899553A (en) |
| DE (1) | DE3316865C2 (en) |
| FR (1) | FR2545642B1 (en) |
| SE (1) | SE452221B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE8511823U1 (en) * | 1985-04-20 | 1986-08-21 | Maschinenfabrik Reinhausen Gebrüder Scheubeck GmbH & Co KG, 8400 Regensburg | Contact piece for tap selector operated under oil |
| JP2594258B2 (en) * | 1986-01-23 | 1997-03-26 | 松下電器産業株式会社 | Hybrid power amplifier |
| JP2009088123A (en) * | 2007-09-28 | 2009-04-23 | Toshiba Corp | On-load tap changer, change contact for on-load tap changer and producing apparatus thereof |
| CN113192775B (en) * | 2021-04-26 | 2022-11-18 | 国网河南省电力公司超高压公司 | Contact assembly for on-load voltage regulating switch |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2910161A1 (en) * | 1979-03-15 | 1980-09-18 | Reinhausen Maschf Scheubeck | CONTACT ARRANGEMENT FOR TAPE SWITCHES OF TAPE TRANSFORMERS |
-
1983
- 1983-05-07 DE DE19833316865 patent/DE3316865C2/en not_active Expired
-
1984
- 1984-04-27 FR FR8406731A patent/FR2545642B1/en not_active Expired
- 1984-04-27 SE SE8402325A patent/SE452221B/en not_active IP Right Cessation
- 1984-05-02 BE BE1/11014A patent/BE899553A/en not_active IP Right Cessation
- 1984-05-04 JP JP8854484A patent/JPS59208710A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| SE452221B (en) | 1987-11-16 |
| JPS59208710A (en) | 1984-11-27 |
| DE3316865C2 (en) | 1986-04-24 |
| SE8402325D0 (en) | 1984-04-27 |
| FR2545642A1 (en) | 1984-11-09 |
| DE3316865A1 (en) | 1984-11-08 |
| BE899553A (en) | 1984-08-31 |
| FR2545642B1 (en) | 1989-01-20 |
| SE8402325L (en) | 1984-11-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US2134870A (en) | Resistance element | |
| US2949592A (en) | Adjustable transformer with stabilized contact track | |
| DE3819698C2 (en) | ||
| JPH0374022B2 (en) | ||
| EP1192628A1 (en) | Switching contact arrangement of a low voltage circuit breaker with main contacts, intermediate contacts and arcing contacts | |
| US1770839A (en) | Electric contact | |
| JPH0374021B2 (en) | ||
| US3563862A (en) | High precision anodizing of thin films | |
| US2586539A (en) | Metal rectifier assembly | |
| US2680174A (en) | Electric switch contact | |
| JP3093748B2 (en) | Alloys and miniature switches for small switch contact coatings | |
| US3532844A (en) | Dissimilar compositions for electrical contact pairs | |
| JPS6367291B2 (en) | ||
| JPS596900B2 (en) | electrical contact materials | |
| US3188589A (en) | Electrical commutating surface | |
| JPH062147Y2 (en) | Gap switch | |
| SU964776A2 (en) | Mechanism lubricating internal elements of miniature sealed relay | |
| JP2537167B2 (en) | Method for forming alloy film | |
| JPS55131149A (en) | Electrical contact | |
| JPS6260772B2 (en) | ||
| US2780768A (en) | Load tap changing circuit | |
| JPS5629259A (en) | Electrostatic recorder | |
| KR20240000379A (en) | Wiring circuit board | |
| JPS6317898B2 (en) | ||
| SU834790A1 (en) | Contact part for sealed contact with memory |