JPH0142567B2 - - Google Patents
Info
- Publication number
- JPH0142567B2 JPH0142567B2 JP13497784A JP13497784A JPH0142567B2 JP H0142567 B2 JPH0142567 B2 JP H0142567B2 JP 13497784 A JP13497784 A JP 13497784A JP 13497784 A JP13497784 A JP 13497784A JP H0142567 B2 JPH0142567 B2 JP H0142567B2
- Authority
- JP
- Japan
- Prior art keywords
- contact
- wall
- current
- ring
- holder
- 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
- 239000000463 material Substances 0.000 claims description 10
- 230000005291 magnetic effect Effects 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000000087 stabilizing effect Effects 0.000 description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005470 impregnation Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
- H01H33/66—Vacuum switches
- H01H33/664—Contacts; Arc-extinguishing means, e.g. arcing rings
- H01H33/6642—Contacts; Arc-extinguishing means, e.g. arcing rings having cup-shaped contacts, the cylindrical wall of which being provided with inclined slits to form a coil
Landscapes
- High-Tension Arc-Extinguishing Switches Without Spraying Means (AREA)
Description
【発明の詳細な説明】
〔発明の属する技術分野〕
この発明は、真空遮断器の接触子であつて、同
軸上に相対向して配置されたつぼ状接触子として
なり、その接点保持部はそれぞれ自由端面が半径
方向内側及び外側に向かつて斜めに面取りされた
閉じた接点リングと、アークを回転させるために
相反する向きに走るスリツトとを備え、接点リン
グ及び接点保持部の少なくとも一方が接点保持部
の材料にくらべて低い導電度を有する領域を含む
真空遮断器の接触子に関する。[Detailed description of the invention] [Technical field to which the invention pertains] The present invention is a contact for a vacuum circuit breaker, which is a pot-shaped contact disposed facing each other on the same axis, and the contact holding portion thereof is Each of the contact rings has a closed contact ring whose free end faces are chamfered diagonally toward the inside and outside in the radial direction, and a slit running in opposite directions for rotating the arc, and at least one of the contact ring and the contact holder is a contact point. The present invention relates to a contact for a vacuum circuit breaker that includes a region having a lower conductivity than the material of the holding part.
同軸上に相対向して配置された上述のつぼ状接
触子はそれぞれ中空回転体を形成し、その底部は
通電棒に結合され、またその縁はリング状の接点
接触面を形成する。両接触子の接点保持部は相反
する方向に走るスリツトを備え、このスリツトは
接点保持部を数箇のセグメントに分割する。これ
らセグメントは接点開離後発生するアークと共に
電流ループを成形し、この電流ループのローレン
ツ力は接点間のアークを回転させる。つぼ状接触
子の軸線に対するスリツトの傾斜は、スリツトが
周方向において接点保持部の中で重なるような大
きさに選ばれる。西ドイツ国特許第1196751号に
よれば、つぼ状接触子の底部にもスリツトが設け
られる。
The above-mentioned pot-shaped contacts arranged oppositely on the same axis each form a hollow rotating body, the bottom of which is connected to the current-carrying rod, and the edge thereof forms a ring-shaped contact contact surface. The contact holders of both contacts are provided with slits running in opposite directions, which slits divide the contact holder into several segments. These segments form a current loop with the arc generated after the contacts open, and the Lorentz force of this current loop rotates the arc between the contacts. The inclination of the slits relative to the axis of the pot-shaped contact is selected to be such that the slits overlap in the contact holder in the circumferential direction. According to German Patent No. 1196751, the bottom of the pot-shaped contact is also provided with a slit.
真空遮断器用のつぼ状接触子の別の公知の構造
においては、接点保持部は閉じた接点リングを備
え、このリングの自由端面は半径方向内側及び外
側に向かつて斜めに面取りされている。端面の面
取りされていないリング状の部分は接点接触面を
形成する。その磁力作用が両接触子の接点接触面
間の回転するを安定化する半径方向電流成分を接
点リングの中に形成するために、導電度を低減し
た領域が設けられる。この領域は接点リングの中
に設けられるのが良いが、接点保持部の中にまで
延長することもできる。場合によつてはこの領域
を接点保持部の中にのみ設けることができる（西
ドイツ国特許公開公報第2912823号）。 In another known construction of a pot-shaped contact for a vacuum circuit breaker, the contact holder has a closed contact ring, the free end face of which is chamfered radially inwardly and outwardly. The unchamfered ring-shaped portion of the end face forms a contact contact surface. A region of reduced conductivity is provided in order to create a radial current component in the contact ring whose magnetic effect stabilizes the rotation between the contact contact surfaces of both contacts. This region is preferably provided within the contact ring, but can also extend into the contact holder. In some cases, this area can also be provided only in the contact holder (DE 2912823).
この発明は、特にアークに対する磁力の安定化
作用を高めるように、真空遮断器のつぼ状接触子
を改良することを目的とする。
The object of the present invention is to improve the pot-shaped contact of a vacuum circuit breaker so as to enhance the stabilizing effect of the magnetic force, especially against the arc.
この目的はこの発明にもとづき、前記の領域に
より形成される接点保持部ないしは接点リングの
中空円筒状の外壁の壁厚が内壁の壁厚より大であ
るように、該領域を配置することにより達成され
る。かかる構成により該領域の両側へ電流成分が
ほぼ等しく分割され、従つてアークの安定化に好
影響を与える。
This object is achieved according to the invention by arranging said regions in such a way that the wall thickness of the hollow cylindrical outer wall of the contact holder or contact ring formed by said regions is greater than the wall thickness of the inner wall. be done. Such an arrangement divides the current component approximately equally on both sides of the region, thus favorably influencing the stabilization of the arc.
つぎにこの発明にもとづく真空遮断器の接触子
の実施例を示す図面により、この発明を詳細に説
明する。
Next, the present invention will be explained in detail with reference to drawings showing embodiments of a contactor for a vacuum circuit breaker based on the present invention.
図面には、同軸上に相対向して配置されたつぼ
状接触子の内の一つの接触子だけが図示されてお
り、符号２が付けられている。この接触子は背の
低いのを良しとするリング状の接点保持部４を備
え、接点保持部は底部６を介して通電棒８と結合
されている。接点保持部４は回転軸線に対して傾
斜したスリツト１０を備え、このスリツトが接点
保持部を数箇のセグメントに分割する。これらセ
グメントはアーク中の電流と共に電流ループを形
成し、このループのローレンツ力が接触子間のア
ークを回転させる。接点保持部の端面にはいわゆ
る接点材料から成る接点リング１２が設けられて
いる。この材料は高い耐焼損性と高い耐熱性と高
い機械的強度とを有し、含浸材として例えば銅を
含む例えばクロムの母材から成るのが良い。接点
保持部４はそれ自身の材料に比べて導電度の著し
く低い材料から成るリング状の領域１４を含んで
いる。該領域は例えば真空であることもでき、又
は高い強度と高い電気抵抗とを有する材料例えば
鉄あるいは接点リング１２の接点材料を含むこと
もできる。 In the drawing, only one of the pot-like contacts arranged coaxially and oppositely to each other is shown, and is designated by the reference numeral 2. This contact includes a ring-shaped contact holder 4 which is preferably short, and the contact holder is connected to a current-carrying rod 8 via a bottom 6. The contact holder 4 is provided with a slit 10 inclined with respect to the axis of rotation, which slit divides the contact holder into several segments. These segments together with the current in the arc form a current loop whose Lorentz force rotates the arc between the contacts. A contact ring 12 made of a so-called contact material is provided on the end face of the contact holder. This material has high burnout resistance, high heat resistance and high mechanical strength and preferably consists of a matrix of, for example, chromium, containing, for example, copper as an impregnation material. The contact holder 4 includes a ring-shaped region 14 made of a material having a significantly lower conductivity than its own material. The region may be a vacuum, for example, or it may contain a material with high strength and high electrical resistance, such as iron or the contact material of the contact ring 12.
該領域１４は場合により接点リング１２の中に
まで延びることもでき、又は接点リング１２の中
にのみ配置されることもできる。 The region 14 can optionally extend into the contact ring 12 or can be arranged only within the contact ring 12 .
該領域１４は、接点保持部４の中空円筒状の外
壁の壁厚b1が接点保持部４の中空円筒状の内壁の
壁厚b2より大であるように、形成されている。か
かる構成により電流の電流成分1及び2のほ
ぼ等しい分割が得られ、従つて接点の開離後に発
生するアークに安定化させる力が作用する。 The region 14 is formed such that the wall thickness b 1 of the hollow cylindrical outer wall of the contact holder 4 is greater than the wall thickness b 2 of the hollow cylindrical inner wall of the contact holder 4 . Such an arrangement provides an approximately equal division of the current components 1 and 2 of the current, thus exerting a stabilizing force on the arc that occurs after the opening of the contacts.
通電棒８の端部には胴細部を設けるのがよく、
この胴細部により接触子底部６における電流の
半径方向成分が増加する。その場合には接触子が
閉成する際の機械力が支持体１６により接点保持
部４から通電棒８に伝達されるのが良い。この支
持体１６は高い機械的強度と低い導電度とを有す
る材料例えば鋼から成るのが良い。 It is preferable to provide a body part at the end of the current-carrying rod 8,
This shell section increases the radial component of the current in the contact base 6. In that case, it is preferable that the mechanical force when the contactor is closed is transmitted from the contact holding part 4 to the current-carrying rod 8 by the support body 16. This support 16 is preferably made of a material with high mechanical strength and low electrical conductivity, for example steel.
低い導電度を有する前記領域にはほとんど電流
が流れず、電流は該領域を内外から囲む中空円筒
状の内外壁をそれぞれ流れる成分に分割される。
外壁を流れる電流成分の路長は内壁を流れる電流
成分の路長より大であるが、外壁の壁厚は内壁の
壁厚より大となつているため両電流路の抵抗はほ
ぼ等しく、従つて電流はほぼ等しい２成分に分割
される。このほぼ等しい両電流成分が作る半径方
向電流成分により、接点開離後その間に発生して
回転するアークに対しこのアークを安定化させる
磁力が作用する。
Almost no current flows through the region with low conductivity, and the current is divided into components that flow through the inner and outer walls of a hollow cylinder surrounding the region from the inside and the outside.
The path length of the current component flowing through the outer wall is larger than the path length of the current component flowing through the inner wall, but since the wall thickness of the outer wall is greater than the wall thickness of the inner wall, the resistances of both current paths are approximately equal, so The current is divided into two approximately equal components. Due to the radial current component created by these two approximately equal current components, a magnetic force acts on the arc that is generated and rotates during the period after the contacts are opened to stabilize this arc.
図面はこの発明にもとづく真空遮断器の接触子
の実施例の片側の接触子だけの軸方向断面図であ
る。
図面において、２はつぼ状接触子全体、４は接
点保持部、１０はスリツト、１２は接点リング、
１４は低い導電度を有する領域、b1は外壁の壁
厚、b2は内壁の壁厚、である。
The drawing is an axial sectional view of only one contactor of an embodiment of the contactor of a vacuum circuit breaker according to the invention. In the drawing, 2 is the entire pot-shaped contact, 4 is the contact holding part, 10 is the slit, 12 is the contact ring,
14 is a region having low conductivity, b 1 is the wall thickness of the outer wall, and b 2 is the wall thickness of the inner wall.
Claims (1)
それぞれ自由端面が半径方向内側及び外側に向か
つて斜めに面取りされた閉じた接点リングを備え
たつぼ状接触子としてなり、前記接点保持部はア
ークを回転させるために相反する向きに走るスリ
ツトを備えると共に、接点リング及び接点保持部
の少なくとも一方に接点保持部の材料にくらべて
低い導電度を有する領域を含むものにおいて、前
記接点保持部ないしは接点リングの中空円筒状の
外壁の壁厚b1が内壁の壁厚b2より大であるように
前記領域が配置されることを特徴とする真空遮断
器の接触子。1 Disposed coaxially and facing each other, the contact holder has a closed contact ring whose free end face is chamfered diagonally inward and outward in the radial direction. is provided with slits running in opposite directions to rotate the arc, and includes a region having a lower conductivity than the material of the contact holder in at least one of the contact ring and the contact holder, the contact holder A contact for a vacuum circuit breaker, characterized in that the area is arranged such that the wall thickness b 1 of the hollow cylindrical outer wall of the contact ring is greater than the wall thickness b 2 of the inner wall.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE3323445.0 | 1983-06-29 | ||
| DE19833323445 DE3323445A1 (en) | 1983-06-29 | 1983-06-29 | Contact arrangement for vacuum switches |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6041722A JPS6041722A (en) | 1985-03-05 |
| JPH0142567B2 true JPH0142567B2 (en) | 1989-09-13 |
Family
ID=6202702
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13497784A Granted JPS6041722A (en) | 1983-06-29 | 1984-06-29 | Contactor of vacuum breaker |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JPS6041722A (en) |
| DE (1) | DE3323445A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3900684A1 (en) * | 1989-01-12 | 1990-07-26 | Sachsenwerk Ag | SWITCHING CONTACT FOR VACUUM SWITCHES |
| DE4033187A1 (en) * | 1990-10-19 | 1992-04-23 | Zeiss Carl Fa | RADIATION AND RECEIVING DEVICE FOR A FIBER OPTICAL SENSOR |
-
1983
- 1983-06-29 DE DE19833323445 patent/DE3323445A1/en not_active Withdrawn
-
1984
- 1984-06-29 JP JP13497784A patent/JPS6041722A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6041722A (en) | 1985-03-05 |
| DE3323445A1 (en) | 1985-01-10 |
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