JPH0479089B2 - - Google Patents
Info
- Publication number
- JPH0479089B2 JPH0479089B2 JP58047561A JP4756183A JPH0479089B2 JP H0479089 B2 JPH0479089 B2 JP H0479089B2 JP 58047561 A JP58047561 A JP 58047561A JP 4756183 A JP4756183 A JP 4756183A JP H0479089 B2 JPH0479089 B2 JP H0479089B2
- Authority
- JP
- Japan
- Prior art keywords
- electrode
- arc
- conductivity
- dielectric strength
- present
- 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 25
- 229910001182 Mo alloy Inorganic materials 0.000 claims description 8
- 229910052742 iron Inorganic materials 0.000 claims description 7
- 229910052804 chromium Inorganic materials 0.000 claims description 5
- 229910052802 copper Inorganic materials 0.000 description 9
- 238000005219 brazing Methods 0.000 description 6
- 230000007423 decrease Effects 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- 229910052751 metal Inorganic materials 0.000 description 5
- 238000003466 welding Methods 0.000 description 4
- 239000002131 composite material Substances 0.000 description 3
- 239000000843 powder Substances 0.000 description 3
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 238000010008 shearing Methods 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 229910000963 austenitic stainless steel Inorganic materials 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 229910000833 kovar Inorganic materials 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000003746 surface roughness Effects 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
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/10—Digital recording or reproducing
- G11B20/10009—Improvement or modification of read or write signals
- G11B20/10046—Improvement or modification of read or write signals filtering or equalising, e.g. setting the tap weights of an FIR filter
- G11B20/10055—Improvement or modification of read or write signals filtering or equalising, e.g. setting the tap weights of an FIR filter using partial response filtering when writing the signal to the medium or reading it therefrom
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/10—Digital recording or reproducing
- G11B20/10009—Improvement or modification of read or write signals
- G11B20/10268—Improvement or modification of read or write signals bit detection or demodulation methods
- G11B20/10287—Improvement or modification of read or write signals bit detection or demodulation methods using probabilistic methods, e.g. maximum likelihood detectors
- G11B20/10296—Improvement or modification of read or write signals bit detection or demodulation methods using probabilistic methods, e.g. maximum likelihood detectors using the Viterbi algorithm
Landscapes
- High-Tension Arc-Extinguishing Switches Without Spraying Means (AREA)
Description
【発明の詳細な説明】
本発明は真空インタラプタに係り、特に磁気駆
動形の電極を備えた真空インタラプタに関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to vacuum interrupters, and more particularly to vacuum interrupters with magnetically driven electrodes.
一般に、磁気駆動形の電極を備えた真空インタ
ラプタは、真空容器内に１対の電極棒を相対的に
接近離反自在に導入するとともに、各電極棒の内
端部にリング状またはボタン状の接触部と、スパ
イラル状またはスクリユー状等の複数のアークペ
ダルを有するアーク駆動部とからなる磁気駆動形
の電極をそれぞれ固着して構成されている。 In general, a vacuum interrupter equipped with magnetically driven electrodes has a pair of electrode rods introduced into a vacuum container so that they can be moved toward and away from each other, and a ring-shaped or button-shaped contact is made at the inner end of each electrode rod. and an arc drive section having a plurality of arc pedals in a spiral or screw shape, respectively.
従来、たとえば第１図に示すように、電極棒１
の内端部にろう付により嵌着されるスパイラル状
の複数のペダルを有するアーク駆動部２と、この
アーク駆動部２の対向面（図において上面）中央
の凹部にろう付により嵌着したリング状の接触部
３とからなる磁気駆動形の電極は、真空インタラ
プタに要求される諸性能を満たすべくアーク駆動
部２をCuにより形成するとともに、接触部３を
Cuに0.5重量％のBiを含有せしめた材料（以下
「Cu−0.5Bi材」という）または20重量％のCuと
80重量％のＷとからなる材料（以下「20Cu−
80W材」という）により形成したものが知られて
いる。 Conventionally, for example, as shown in FIG.
an arc drive section 2 having a plurality of spiral pedals fitted by brazing on the inner end of the arc drive section 2; and a ring fitted by brazing into a recess in the center of the opposing surface (upper surface in the figure) of the arc drive section 2. In order to meet the various performances required of a vacuum interrupter, the magnetically driven electrode is composed of a shaped contact portion 3, in which the arc drive portion 2 is made of Cu, and the contact portion 3 is made of Cu.
A material containing 0.5% by weight of Bi in Cu (hereinafter referred to as "Cu-0.5Bi material") or a material containing 20% by weight of Cu.
A material consisting of 80% by weight of W (hereinafter referred to as “20Cu-
80W material) is known.
しかし、アーク駆動部２がCuからなる場合に
は、Cuが比較的機械的強度が低くかつ電極棒１
等とのろう付時の加熱により鈍り、一層の強度低
下をもたらすため、第１図に示すようにその厚さ
を大きせざるを得ず、これに伴う重量化により衝
撃が大となるとともに、大きな操作力を必要とす
る等の問題がある。 However, when the arc drive section 2 is made of Cu, Cu has relatively low mechanical strength and the electrode rod 1
The heat generated during brazing with other materials dulls the material, resulting in a further decrease in strength, so the thickness must be increased as shown in Figure 1, and the accompanying weight increases, resulting in a greater impact. There are problems such as requiring a large operating force.
また、接触部３がCu−0.5Bi材からなる場合に
は、大電流しや断能力、耐溶着性および接触抵抗
に優れてはいるものの、Biを含有することから
短時間電流試験の如く大電流投入、しや断後の動
的な絶縁耐力の低下が著しいとともに、電流さい
断値が10Aと高いためさい断サージを発生するこ
とがあり、遅れ小電流等を良好にしや断し得ない
問題がある。 In addition, when the contact part 3 is made of Cu-0.5Bi material, although it has excellent large current shedding ability, welding resistance, and contact resistance, since it contains Bi, it is difficult to conduct large current tests such as short-time current tests. The dynamic dielectric strength decreases significantly after current is turned on and shattered, and because the current cutoff value is as high as 10A, a cutoff surge may occur, making it impossible to properly cut off small delayed currents, etc. There's a problem.
さらに、接触部３が20Cu−80W材からなる場
合には、20〜30％程度の％導電率を有し、機械的
強度も大きく、かつ静的な絶縁耐力が高い利点は
あるものの、Ｗは熱電子放射係数が高いため動的
な絶縁耐力が低いとともに、事故電流の如き大電
流をしや断することが困難となる等の問題があ
る。 Furthermore, when the contact part 3 is made of 20Cu-80W material, it has the advantage of having a % conductivity of about 20 to 30%, high mechanical strength, and high static dielectric strength. Due to the high thermionic emission coefficient, there are problems such as low dynamic dielectric strength and difficulty in cutting off large currents such as fault currents.
本発明は上述した問題に鑑みてなされたもの
で、磁気駆動形の電極におけるアーク駆動部を10
〜20％の％導電率を有しかつ少なくともCu，Fe
およびCrを含有する材料により形成するととも
に、接触部を20〜60％の％導電率を有するCu−
Cr−Mo合金により形成することにより、機械的
強度の向上に伴うアーク駆導部の薄肉、軽量化
と、薄肉化による磁気駆動力の増大をなし得ると
ともに、動的な絶縁耐力に優れ、かつ大電流およ
び小電流を良好にしや断し得るようにし、ひいて
は高電圧、大電流のしや断に供し得る真空インタ
ラプタの提供を目的とする。 The present invention was made in view of the above-mentioned problems, and the present invention has been made in view of the above-mentioned problems.
~20% conductivity and at least Cu, Fe
and Cr-containing material, and the contact area is made of Cu-
By forming the Cr-Mo alloy, the arc driving part can be made thinner and lighter due to improved mechanical strength, and the magnetic driving force can be increased due to the thinner wall.It also has excellent dynamic dielectric strength and It is an object of the present invention to provide a vacuum interrupter that can effectively interrupt large currents and small currents, and can also be used for interrupting high voltages and large currents.
以下、第２図以降の図面を参照してこの発明の
実施例を詳細に説明する。 Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings from FIG. 2 onwards.
本発明に係る真空インタラプタは、たとえば第
２図に示すように、真空容器４内に１対の電極棒
５，５を相対的に接近離反自在に導入するととも
に、各電極棒５の内端部に後述する磁気駆動形の
電極６，６をそれぞれ固着して概略構成されてい
る。 In the vacuum interrupter according to the present invention, as shown in FIG. It is generally constructed by fixing magnetically driven electrodes 6, 6, which will be described later.
すなわち、真空容器４は、ガラスまたはセラミ
ツクスからなる円筒状の複数の絶縁筒７，７を両
端に固着したコバール等からなる薄肉円環状の封
着金具８，８，…の一方を介し接合して１本の絶
縁筒とするとともに、その両開口端を他方の封着
金具８，８を介し円板状の金属端板９，９により
閉塞し、かつ内部を高真空に排気して形成されて
いる。そして、真空容器１内には、前記各電極棒
５がそれぞれ金属端板５の中央から真空容器４の
気密性を保持して相対的に接近離反自在に導入さ
れている。 That is, the vacuum container 4 is assembled by joining a plurality of cylindrical insulating tubes 7, 7 made of glass or ceramics through one of thin-walled annular sealing fittings 8, 8, etc. made of Kovar or the like fixed to both ends. It is formed by forming a single insulating cylinder, closing both open ends of the cylinder with disc-shaped metal end plates 9, 9 via the other sealing fittings 8, 8, and evacuating the inside to a high vacuum. There is. Each of the electrode rods 5 is introduced into the vacuum container 1 from the center of the metal end plate 5 so as to be able to approach and separate from the vacuum container 4 while maintaining airtightness.
なお、電極棒２の一方（第１図において上方）
は、一方の金属端板９に気密に挿着されているも
のであり、他方は金属ベローズ１０を介し真空容
器４の気密性を保持しつつ他方の金属端板９を軸
方向へ移動自在に挿通されているものである。ま
た、第２図において１１および１２は軸シールド
およびベローズシールド、１３は主シールド、１
４は補助シールドである。 In addition, one side of the electrode rod 2 (upper side in Fig. 1)
is airtightly inserted into one metal end plate 9, and the other metal end plate 9 is movable in the axial direction while maintaining the airtightness of the vacuum vessel 4 via a metal bellows 10. It is inserted. In addition, in Fig. 2, 11 and 12 are shaft shields and bellows shields, 13 is a main shield, and 1
4 is an auxiliary shield.
前記各電極棒５の内端部には、第３図に示すよ
うに、電極棒５の直径より適宜大径の円板状にし
てかつCuの如く高導電率の材料からなる取付ベ
ース１５が、その一面（第３図において下面）に
形成した凹部１６を介しろう付により嵌着されて
おり、この取付ベース１５の他面には、薄肉円板
状のアーク駆動部６ａと、このアーク駆動部６ａ
の対向面（第３図において上面）に突設したリン
グ状の接触部６ｂとからなる前記磁気駆動形の電
極６が固着されている。 As shown in FIG. 3, at the inner end of each electrode rod 5, there is a mounting base 15 made of a highly conductive material such as Cu and shaped like a disk and having a diameter suitably larger than the diameter of the electrode rod 5. , is fitted by brazing through a recess 16 formed on one surface (lower surface in FIG. 3) of the mounting base 15, and on the other surface of the mounting base 15, a thin disc-shaped arc drive section 6a and a Part 6a
The magnetically driven electrode 6 consisting of a ring-shaped contact portion 6b protruding from the opposing surface (upper surface in FIG. 3) is fixed.
すなわち、電極６のアーク駆動部６ａは、取付
ベース１５の直径より適宜大径の薄肉笠形円板状
に形成されるとともに、アークを磁気駆動すべく
その周辺から中央付近までスパイラル状の複数の
スリツト１７を切込むことにより、周辺にスパイ
ラル状の複数のアークペダルを有しており、一面
中央に突設した突出部を介しろう付により取付ベ
ース１５の他面に形成した凹部１８に嵌着されて
いる。また、アーク駆動部６ａは、10〜20％（望
ましくは10〜15％）の％導電率を有しかつ少なく
ともCu，FeおよびCrを含有する材料、たとえば
約30Kg／mm2の抗張力を有しかつ50重量％のCuと
50重量％のオーステナイト系ステンレス鋼
（SUS２７またはSUS３２）の複合体（以下
「50Cu−50SUSの複合体」という）または50重量
％のCu，25重量％のFeおよび25重量％のCr合金
等から形成されている。 That is, the arc driving part 6a of the electrode 6 is formed in the shape of a thin cap-shaped disk with a diameter suitably larger than the diameter of the mounting base 15, and has a plurality of spiral-shaped slits from the periphery to the vicinity of the center in order to magnetically drive the arc. By cutting 17, a plurality of spiral arc pedals are formed around the periphery, and the arc pedals are fitted into the recess 18 formed on the other side of the mounting base 15 by brazing via a protrusion provided in the center of one side. ing. Further, the arc driving part 6a is made of a material having a % conductivity of 10 to 20% (preferably 10 to 15%) and containing at least Cu, Fe, and Cr, for example, a tensile strength of about 30 Kg/ mm2 . and 50 wt% Cu
Formed from a composite of 50% by weight austenitic stainless steel (SUS27 or SUS32) (hereinafter referred to as "50Cu-50SUS composite") or an alloy of 50% by weight Cu, 25% by weight Fe, and 25% by weight Cr, etc. has been done.
前記アーク駆動部６ａの対向面中央には、取付
部１５の直径より僅かに大径の円形の凹部１９が
形成されており、この凹部１９には、前記リング
状の接触部６ｂがアーク駆動部６ａの対向面から
突出してろう付により嵌着されている。そして、
接触部６ｂは、20〜70重量％のCu，５〜70重量
％のCrおよび５〜70重量％のMoからなり、20〜
60％の％導電率を有しかつCu−0.5Bi材と同程度
の接触抵抗を有するCu−Cr−Mo合金により形成
されている。 A circular recess 19 having a diameter slightly larger than the diameter of the mounting portion 15 is formed in the center of the facing surface of the arc drive portion 6a, and the ring-shaped contact portion 6b is inserted into the arc drive portion. It protrudes from the opposing surface of 6a and is fitted by brazing. and,
The contact portion 6b is made of 20 to 70% by weight of Cu, 5 to 70% by weight of Cr, and 5 to 70% by weight of Mo;
It is made of a Cu-Cr-Mo alloy with a % conductivity of 60% and a contact resistance comparable to Cu-0.5Bi material.
前記のアーク駆動部６ａを10〜20％の％導電率
とした理由は、電極表面上を移動するアークの速
度の点から、導電率は低い方が好ましく電極表面
を有効に使用できるからである。 The reason why the arc drive section 6a is set to have a % conductivity of 10 to 20% is that from the viewpoint of the speed of the arc moving on the electrode surface, a lower conductivity is preferable and the electrode surface can be used more effectively. .
しかし、アーク駆動部６ａは接触部６ｂと取付
ベース１５の間に存在しており、電路の一部とな
ることから、導電率が低いと抵抗体となつて発熱
し、真空インタラプタの温度（電極棒２の外端部
で測定）を上昇させてしまい、規格値以内に抑え
ることができなくなる。検討した結果、10％程度
であれば実用上問題がないことが判明した。しか
し、10％以下の場合には温度上昇が激しくなつて
実用的でなく、また、アークの移動が悪化して磁
気回転駆動が低下し、しや断性能を低下させるこ
とが判明した。一方、20％を越える場合には、
Cuは多く含むことになり、アークによる表面荒
れを生じやすくなり、動的耐電圧特性が低下し、
また、機械的強度が低下することから、アーク駆
動部の厚さを厚くする必要があり、電極の重量が
増し好ましくない。 However, since the arc drive part 6a exists between the contact part 6b and the mounting base 15 and becomes a part of the electric path, if the conductivity is low, it becomes a resistor and generates heat, and the temperature of the vacuum interrupter (electrode (measured at the outer end of the rod 2) and cannot be kept within the standard value. As a result of consideration, it was found that there is no problem in practical use if it is around 10%. However, it has been found that if it is less than 10%, the temperature rises too much to be practical, and furthermore, the movement of the arc deteriorates, the magnetic rotation drive decreases, and the shearing performance deteriorates. On the other hand, if it exceeds 20%,
Contains a large amount of Cu, which tends to cause surface roughness due to arcing, and reduces dynamic withstand voltage characteristics.
Furthermore, since the mechanical strength is reduced, it is necessary to increase the thickness of the arc driving section, which is undesirable because the weight of the electrode increases.
次に、アーク駆動部６ａをCu，Fe、およびCr
を含有する材料で形成した理由について述べる。
Cuは所定の導電率を確保するのに必要であり、
Fe，Crは良好な耐電圧特性を得るのに必要であ
る。この種材料を用いることは特開昭50−55870
号公報および特開昭53−21777号公報に示されて
いる。また、このアーク駆動部６ａは、しや断時
にアークに曝されるので、材料自身の耐電圧特性
が高いことと、更に、アークによる損傷が少ない
ことが必要となる。 Next, the arc drive section 6a is made of Cu, Fe, and Cr.
The reason why it is made of a material containing .
Cu is necessary to ensure a certain conductivity,
Fe and Cr are necessary to obtain good withstand voltage characteristics. The use of this kind of material is disclosed in Japanese Patent Application Laid-Open No. 50-55870.
No. 53-21777. In addition, since the arc drive section 6a is exposed to arc during the shrunken state, it is necessary that the material itself has high withstand voltage characteristics and that it is less likely to be damaged by the arc.
次に接触部６ｂを20％〜60％の％導電率とする
理由は、導電率20％以下の場合には、導電率の低
下が急激に大きくなり、短時間電流試験後の接触
抵抗が急激に大きくなり、且つ定格電流通電時に
おけるジユール熱の発生が大きいので実用性が低
下することが判明した。 Next, the reason why the % conductivity of the contact part 6b is set to 20% to 60% is that when the conductivity is 20% or less, the decrease in conductivity becomes large rapidly, and the contact resistance after a short-time current test suddenly increases. It has been found that practicality is reduced because of the large amount of heat generated during the rated current and the large amount of Joule heat generated when the rated current is applied.
また、導電率60％を越える場合には、絶縁耐力
が低下するとともに、耐溶着性が急激に悪化し好
ましくない。一方、Cu，Fe，Crを含有する材料
を用いる理由としては、実験の結集、耐溶着性を
良好に維持しつつ、特に絶縁耐力に優れているこ
とが判明したからである。 Furthermore, if the electrical conductivity exceeds 60%, the dielectric strength decreases and the welding resistance rapidly deteriorates, which is not preferable. On the other hand, the reason for using a material containing Cu, Fe, and Cr is that it has been found through experiments that it is particularly excellent in dielectric strength while maintaining good welding resistance.
なお、Cu−Cr−Mo合金は、−100メツシユの
Cr粉末と同様に−100メツシユのMo粉末とをそ
れぞれの融点以下の温度で相互に拡散結合して多
孔質の基材を形成し、この基材にCuを溶浸して
設けられたり、またはCrとMoの合金粉末をその
融点以下の温度で相互に結合して多孔質の基材を
形成し、この基材にCuを溶浸して設けられるも
のである。 In addition, the Cu-Cr-Mo alloy has a -100 mesh
Similar to Cr powder, -100 mesh Mo powder is diffusion bonded to each other at a temperature below their respective melting points to form a porous base material, and Cu is infiltrated into this base material. The alloy powder of Cu and Mo is bonded together at a temperature below their melting point to form a porous base material, and this base material is infiltrated with Cu.
しかして、アーク駆動部を50Cu−50SUSの複
合体により、また接触部をCu−Cr−Mo合金によ
り形成した磁気駆動形の電極を有する本発明に係
る真空インタラプタと、アーク駆動部をCuによ
り、また接触部をCu−0.5Bi材により形成した磁
気駆動形の電極を有する従来の真空インタラプタ
との諸性能を比較したところ、下記に示すように
なつた。 Therefore, the vacuum interrupter according to the present invention has a magnetically driven electrode in which the arc drive part is made of a composite of 50Cu-50SUS and the contact part is made of a Cu-Cr-Mo alloy, and the arc drive part is made of Cu. In addition, we compared the various performances with a conventional vacuum interrupter having magnetically driven electrodes whose contact parts were made of Cu-0.5Bi material, and the results were as shown below.
（） 大電流しや断能力
本発明に係るものが従来のものに比し10％程度
向上しかつ安定した。() Large current shedding ability The device according to the present invention is improved by about 10% and stable compared to the conventional device.
（） 絶縁耐力
従来のものの10mmのギヤツプでの絶縁耐力と本
発明のものの３mmのギヤツプでのそれと同程度と
なり、本発明のものは、従来のものの約３倍の絶
縁耐力を有する。() Dielectric strength The dielectric strength of the conventional product with a gap of 10 mm is about the same as that of the product of the present invention with a gap of 3 mm, and the product of the present invention has a dielectric strength about three times that of the conventional product.
また、大電流（たとえば84KV−25KA）しや
断後の極間絶縁耐力は、横軸に大電流しや断回数
Ｎ、縦軸に大電流しや断前の極間絶縁耐力100％
に対するしや断後の極間絶縁耐力の比ｐ（％）を
とつた第４図において、本発明のものは折線Ａ
で、従来のものは折線Ｂで示すようになつた。し
たがつて、本発明のものは、従来のものに比して
はるかに高い動的な絶縁耐力を示すことが判る。 In addition, the inter-electrode dielectric strength after a large current (e.g. 84KV-25KA) sheath failure is expressed as follows: The horizontal axis represents the number of times N of high-current sheath failure, and the vertical axis represents 100% of the inter-electrode dielectric strength before the high-current sheath failure.
In FIG. 4, which shows the ratio p (%) of interelectrode dielectric strength after shear breakage to
The conventional one is now shown as broken line B. Therefore, it can be seen that the material of the present invention exhibits a much higher dynamic dielectric strength than the conventional material.
（） 耐溶着性
本発明のものは、従来のものの80％であるが実
用上殆んど問題なく、必要ならば電極開離瞬時の
引外し力を多少増加させればよい。() Welding resistance The property of the present invention is 80% of that of the conventional product, but there is almost no problem in practical use, and if necessary, the tripping force at the moment of electrode separation may be slightly increased.
（） 遅れおよび進み小電流しや断能力
遅れ小電流しや断能力
本発明のものの電流さい断値は、従来のものの
電流さい断値の40％と小さいので、さい断サージ
が殆んど問題とならず、かつ開閉後もその値が変
化しない。() Lagging and leading small current shedding ability Lagging small current shedding ability The current cutting value of the device of the present invention is as small as 40% of the current cutting value of the conventional device, so cutting surges are almost no problem. , and its value does not change even after opening and closing.
進み小電流しや断能力
本発明のものは、従来のものに比して２倍のキ
ヤパシタンス容量の負荷をしや断することができ
る。 Leading small current shearing capability The device of the present invention can shunt a load with twice the capacitance capacity compared to the conventional device.
以上の如く本発明は、真空容器内に１対の電極
棒を相対的に接近離反自在に導入するとともに、
各電極棒の内端部に接触部とアーク駆動部とから
なる磁気駆動形の電極をそれぞれ固着してなる真
空インタラプタにおいて、前記各電極の接触部を
20〜60％の％導電率を有するCu−Cr−Mo合金に
より形成するとともに、アーク駆動部を10〜20％
の％導電率を有しかつ少なくともCu，Feおよび
Crを含有する材料により形成したものであるか
ら、アーク駆動部の機械的強度の向上を薄肉にし
てかつ軽量の状態で達成できるとともに、その磁
気駆動力を増大することができる。また、接触部
をCu−Cr−Mo合金としたので、静的および動的
な絶縁耐力を従来のものに比して大幅に向上する
ことができるとともに、大電流および小電流をと
もに良好にしや断できる従つて、軽量で、しか
も、しや弾性能および絶縁耐力の優れた電極６が
得られる等の効果を奏する。 As described above, the present invention introduces a pair of electrode rods into a vacuum container so that they can approach and separate from each other, and
In a vacuum interrupter in which a magnetically driven electrode consisting of a contact part and an arc drive part is fixed to the inner end of each electrode rod, the contact part of each electrode is fixed to the inner end of each electrode rod.
Made of Cu-Cr-Mo alloy with % conductivity of 20~60%, and arc drive part with % conductivity of 10~20%.
% conductivity and at least Cu, Fe and
Since it is made of a material containing Cr, it is possible to improve the mechanical strength of the arc drive part by making it thinner and lighter, and it is also possible to increase its magnetic driving force. In addition, since the contact part is made of a Cu-Cr-Mo alloy, static and dynamic dielectric strength can be greatly improved compared to conventional ones, and it can handle both large and small currents easily. Therefore, it is possible to obtain an electrode 6 that is lightweight and has excellent elasticity and dielectric strength.
第１図は従来の磁気駆動形の電極の縦断面図、
第２図は本発明に係る真空インタラプタの縦断面
図、第３図は本発明の要部の縦断面図、第４図は
本発明に係るものと従来のものとの極間絶縁耐力
の特性図である。
４……真空容器、５……電極棒、６……電極、
６ａ……アーク駆動部、６ｂ……接触部。
Figure 1 is a vertical cross-sectional view of a conventional magnetically driven electrode.
Fig. 2 is a longitudinal cross-sectional view of the vacuum interrupter according to the present invention, Fig. 3 is a longitudinal cross-sectional view of the main part of the present invention, and Fig. 4 is the characteristic of interpolar dielectric strength between the vacuum interrupter according to the present invention and the conventional one. It is a diagram. 4... Vacuum container, 5... Electrode rod, 6... Electrode,
6a... Arc drive section, 6b... Contact section.
Claims (1)
反自在に導入するとともに、各電極棒の内端部に
接触部とアーク駆動部とからなる磁気駆動形の電
極をそれぞれ固着してなる真空インタラプタにお
いて、前記各電極の接触部を20〜60％の％導電率
を有するCu−Cr−Mo合金により形成するととも
に、アーク駆動部を10〜20％の％導電率を有しか
つ少なくともCu，FeおよびCrを含有する材料に
より形成したことを特徴とする真空インタラプ
タ。1 A pair of electrode rods are introduced into a vacuum container so that they can approach and separate from each other, and a magnetically driven electrode consisting of a contact part and an arc drive part is fixed to the inner end of each electrode rod. In the vacuum interrupter, the contact part of each of the electrodes is formed of a Cu-Cr-Mo alloy having a % conductivity of 20 to 60%, and the arc driving part is formed of a Cu-Cr-Mo alloy having a % conductivity of 10 to 20% and at least Cu. , a vacuum interrupter characterized in that it is formed from a material containing Fe and Cr.
Priority Applications (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58047561A JPS59173921A (en) | 1983-03-22 | 1983-03-22 | Vacuum interrupter |
| CA000450014A CA1230909A (en) | 1983-03-22 | 1984-03-20 | Vacuum interrupter electrode with low conductivity magnetic arc rotating portion |
| US06/591,481 US4659885A (en) | 1983-03-22 | 1984-03-20 | Vacuum interrupter |
| EP84103106A EP0121180B2 (en) | 1983-03-22 | 1984-03-21 | Vacuum interrupter |
| DE8484103106T DE3465821D1 (en) | 1983-03-22 | 1984-03-21 | Vacuum interrupter |
| KR1019840001445A KR890001192B1 (en) | 1983-03-22 | 1984-03-21 | Vaccum interrupter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58047561A JPS59173921A (en) | 1983-03-22 | 1983-03-22 | Vacuum interrupter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59173921A JPS59173921A (en) | 1984-10-02 |
| JPH0479089B2 true JPH0479089B2 (en) | 1992-12-15 |
Family
ID=12778615
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP58047561A Granted JPS59173921A (en) | 1983-03-22 | 1983-03-22 | Vacuum interrupter |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JPS59173921A (en) |
| KR (1) | KR890001192B1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02201834A (en) * | 1989-01-31 | 1990-08-10 | Meidensha Corp | Magnetic driving type electrode for vacuum interrupter |
-
1983
- 1983-03-22 JP JP58047561A patent/JPS59173921A/en active Granted
-
1984
- 1984-03-21 KR KR1019840001445A patent/KR890001192B1/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| KR890001192B1 (en) | 1989-04-26 |
| JPS59173921A (en) | 1984-10-02 |
| KR840008203A (en) | 1984-12-13 |
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