CN86106540A - The vacuum circuit-breaker envelope assembly - Google Patents

The vacuum circuit-breaker envelope assembly Download PDF

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Publication number
CN86106540A
CN86106540A CN198686106540A CN86106540A CN86106540A CN 86106540 A CN86106540 A CN 86106540A CN 198686106540 A CN198686106540 A CN 198686106540A CN 86106540 A CN86106540 A CN 86106540A CN 86106540 A CN86106540 A CN 86106540A
Authority
CN
China
Prior art keywords
cylindrical
wall thickness
vacuum circuit
wall
end pieces
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.)
Pending
Application number
CN198686106540A
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Chinese (zh)
Inventor
约瑟夫·卡尔·索菲安纳克
小乔治·波林科
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
General Electric Co
Original Assignee
General Electric Co
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by General Electric Co filed Critical General Electric Co
Publication of CN86106540A publication Critical patent/CN86106540A/en
Pending legal-status Critical Current

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    • 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
    • H01H33/662—Housings or protective screens
    • H01H33/66207—Specific housing details, e.g. sealing, soldering or brazing
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H11/00—Apparatus or processes specially adapted for the manufacture of electric switches
    • 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
    • H01H33/662—Housings or protective screens
    • H01H33/66207—Specific housing details, e.g. sealing, soldering or brazing
    • H01H2033/66215—Details relating to the soldering or brazing of vacuum switch housings
    • 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
    • H01H33/662—Housings or protective screens
    • H01H33/66207—Specific housing details, e.g. sealing, soldering or brazing
    • H01H2033/66223—Details relating to the sealing of vacuum switch housings
    • 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
    • H01H33/662—Housings or protective screens
    • H01H33/66261—Specific screen details, e.g. mounting, materials, multiple screens or specific electrical field considerations
    • H01H2033/66276—Details relating to the mounting of screens in vacuum switches
    • 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
    • H01H33/662—Housings or protective screens
    • H01H33/66261—Specific screen details, e.g. mounting, materials, multiple screens or specific electrical field considerations
    • H01H2033/66292—Details relating to the use of multiple screens in vacuum switches

Landscapes

  • High-Tension Arc-Extinguishing Switches Without Spraying Means (AREA)

Abstract

The bell metal end piece of the capable one of a kind of vacuum circuit-breaker, soldering on the opposite end of a cylindrical ceramic cover.The part of end pieces cylindrical wall, with the interface that contacts of cover near, reduced thickness.Thinned portion deforms during brazing is with the stress in the contact-making surface that may cause the capsul fracture that reduces rigid one-piece end member.

Description

The vacuum circuit-breaker envelope assembly
The present invention is relevant with vacuum circuit-breaker, the shell component assembly of concrete relevant this circuit breaker.
The vacuum circuit-breaker shell of finding time, shell have and are the cylindrical configuration shape substantially, and relative end pieces is arranged, and a motion bar and a fixed lever are installed respectively on the end pieces, and above-mentioned each bar is fixed a contact.The activity of motion bar makes the closing of contact or opening.Housing has metalwork and moving bar with decide the insulating part of bar mutual insulating.These ones appoint must be fixing, makes shell structure that high mechanical properties and heat resistance be arranged, airtight to keep, and keeps inner vacuum.Shell component generally contacts with face by face, fixes with end face another element the end face of an element, that is welds with soldering.Joint between the assembly must have enough sealings, promptly uses soldering with anti-leak.Even little leakage can cause the fault of device.Therefore, press ideal, require to reduce the number of the shell component that couples together, with minimizing housing soldered fitting number, thus the chance that minimizing leakage and fault take place.
Shell component at high temperature assembles, soldering just, and high temperature range is about 800 ° to 1050 ℃, experience thermal expansion when therefore rule are assembled.If the different materials of variant coefficient of thermal expansion, just insulating part and metalwork are fixed together, different thermal expansions and cold contraction subsequently may produce stress, thereby reduce strength of joint and finally cause breaking of sealing.Even a minimum fracture in the joint also can destroy sealing, thereby destroys the running of circuit breaker.Case material preferably all has identical coefficient of thermal expansion, prevents discrepant breathing and cold contraction, but to shell component selection must be arranged, to satisfy multiple performance requirement and operation requirement.Therefore, obtain suitable insulating part and metalwork, and essentially identical coefficient of thermal expansion is arranged is very difficult.
Therefore, need various different measure, prevent to cause the stress of fracture.But it is unsuitable complicated that these measures should neither make the circuit breaker assemble method have, and also do not require the extra element of insertion in shell structure.Should reduce the number of shell component, the number of corresponding minimizing joint is to reduce the possibility of leaking as far as possible.
One object of the present invention is to propose a kind of circuit breaker, and its housing has suitable strength and stiffness, the big strength and the mechanical force of working and can resist superimposed constantly in the contact, and in design, reduce the stress that causes fracture as far as possible.
Another purpose is to propose a kind of Shell of circuit breaker, and metal assembly and insulation assembly are arranged, and its surface is connected to each other, and becomes the quite low joint of stress.
Also having a purpose, is to propose a kind of Shell of circuit breaker, and a central cylindrical shape insulating part is arranged, on its relative two ends, respectively with the quite low mode of stress, the metal end piece of soldering one.
According to proposed by the invention, a cylindrical insulating material sleeve is connecting first and second metal end piece on the both sides relatively.Armature contact bar and fixed contact bar inside pass through, and are supported by end pieces respectively.At least one is structure as a whole in the end pieces, contact bar of integrally formed with it overhang bracket is arranged, and a cylindrical side wall is arranged, and its end face is used such as methods such as solderings, is fixed on the end face of cover.This integrative-structure must have enough rigidity with opposing atmosphere and mechanicals efforts.Sidewall has one to stretch to the column part of end from end face, and wall thickness is compared with the wall thickness of end pieces remainder, reduces a lot, and making has different thermal deformations between cylindrical wall and the insulating case.In a desirable embodiment, two end pieces all have above-mentioned version.
To understand in order helping invention had more clearly, can to consult hereinafter being described in detail in conjunction with the accompanying drawings, accompanying drawing is as follows:
Fig. 1 is for analysing and observe in conjunction with of vacuum circuit-breaker of the present invention;
Fig. 2 looks closely for the decomposition of end cover and end profile shielding, has the soldering circle to can be used for fixing these assemblies;
Fig. 3 is an end shield, and the decomposition of insulating case and each part of soldering circle is analysed and observe.
The present invention is suitable for the vacuum circuit-breaker of general type shown in Figure 1.Illustrated vacuum circuit-breaker has high vacuum shell 11, and tubular casing 12 and two metal cap 13 and 14 of exhausted electric material are wherein arranged.Two contacts 15 and 16 of activity are relatively arranged in the shell.
Contact 15 is rest(ing) contacts, is installed on the rest(ing) contact bar 17, and bar 17 passes and covers 13 from last end shield 13 sealing relationship.Contact 16 is an armature contact, and peace will be contained on the armature contact bar 18, and bar 18 passes freely through down a medium pore 19 of end shield 14.
A flexible metal bellows 22 is arranged, be formed on armature contact bar 18 sealing on every side.The upper end 22 that ripple is put pipe 22 connects armature contact bar 18, and lower end 24 is connected the excircle of cover lower end medium pore 19.
The release position of diagram circuit breaker, that is contact 15 and 16 leaves mutually, closed realization is by armature contact bar 18 upwards being pushed away, the contact being contacted.Opening, just open circuit, is because armature contact bar 18 is descended, and reaches illustrated position.
Contact is opened just and is separated, and causes the electric arc between the contact, and electric arc generally lasts till till the nature zero current approximately.This has just finished opening circuit.Electric arc produces metallic vapour, and deposition is gone up on the surface around.
Be arranged on the shielding 29 on the bellows, preventing has metallic vapour on the bellows 22.
Prevent that metallic vapour from depositing obviously is important on insulating case 12.Tubular metal main shield 26 provides the main protective action of preventing metal deposition.The inner periphery that main shield 26 is installed in insulating case 12 is with in the heart.For example, this be fixedly be used on the equidistant points of shielding 26 excircles and accomplish fixing method such as spot welding at the supercentral metal fixture 27 of shielding.Anchor clamps 27 connect from overlapping 12 ledges of stretching inwards 28.
Insulating case 12 is also used end profile shielding 32 and 33, prevents that further metallic vapour from depositing in the above.Last metal end shielding 32 and following metal end shielding 33, respectively fixedly on the upper and lower end parts cover 13 and 14, stretching, extension with one heart between insulating case 12 and main shield 26.So the metallic vapour of overflowing from main shield 26 ends is stoped by end profile shielding 32 and 33, can not reach on the insulating case 12.Treat in the time of under Sofia Neck people's names such as (Sofianek) that quasi patent application the 41st VI-is No. 4710 relevant therewith, delegated the same people of being awarded with the application's case.This treats that simultaneously accurate application case has disclosed end profile shielding 32 and 33, the method for fixing on the vacuum circuit-breaker shell.
In the structure of circuit breaker shell, the end cover 13 and 14 that insulating case 12 is arranged and on the opposed end of shell, seal.In an embodiment of giving an example, cylindrical right insulating case 12, impermeable with dense, low-loss, vacuum-tight high aluminium content glaze pottery magnetic is made.The opposing end surface 53 of cover 12 has thin clad 54(Fig. 2 and 3) so that soldering.A kind of refractory material is arranged in this covering, the clad of sintering just, thickness is about 1 mil (0.001 inch), and there is thinner plating sintrered nickel covering the outside.Pottery, glaze and clad must be able to be resisted up to about 1000 ℃ temperature, and never degenerate.In desirable embodiment, about four inches of cover 12 height, about 4.6 inches of internal diameter, about 0.25 inch of wall thickness.End shield, end pieces 13 and 14 just, there have an one to be about to be bell, or cup-shaped structure, and end 51 is arranged on it, with one with it be connected cylindrical side wall 38.There is a centre bore 19 end, holds a contact bar, and arch section 52 is arranged, and is connected with sidewall 38 behind the turnup.Above-cited embodiment, about 2 inches of the height of end pieces, the cylindrical side wall internal diameter is about 4.8 inches.End pieces sheet metal blank moulding, for example #304 sheet metal.In Yin Shu the embodiment, the thickness of thin stock is about 0.06 inch in the above.Selected this thickness is for making end pieces that enough intensity be arranged, just can supporting contact bar and contact sets component, and can resist atmospheric pressure.The diameter of cylindrical side wall 38 and insulating case 12 is measured, and makes the end face 55 of sidewall 38 can the recline end face 53 of insulating case 12, i.e. its clad 54.The wall of insulating case 12 is more quite a lot of than end pieces wall thickness.The contact-making surface of best insulating case and each end pieces, the roughly midpoint between the surfaces externally and internally of insulating case 12 walls.
The steel plate of top indication type is nonmagnetic.When working, the vacuum circuit breaker produces the magnetic line of force.This magnetic line of force passes through from end plate.If end pieces magnetisable material manufacturing, just may produce eddy current.These eddy currents produce in end pieces don't sharp heating.
Insulating case 12 has different coefficient of thermal expansions with end pieces 13 and 14.The linear expansion coefficient of cover 12 is 7.5 to 9.0 * 10 in relevant scope -6Inch/inch/℃.End pieces #304 steel-sheet linear expansion coefficient is bigger than cover 12, and it is approximately 17.3 * 10 -6Inch/inch/℃.During assembling circuit breaker shell, promptly the end face of end pieces 13 and 14, during soldering, shell component may be heated to about 1000 ℃ on 12 end face.Dilation has sizable difference as a result.Particularly, when the insulating case that reclines mutually and end pieces are heated, near the part radial expansion of cylindrical side wall 38 contact-making surface.Like this, the end face 55 of sidewall 38, along the end face 53 of insulating case 12, promptly the metal bag 54, to the outer surface migration of insulation jacket wall.During the envelope assembly cooling, the fusing brazing alloy cooling between end body and the insulating case contact-making surface is also solidified.So, the end face 55 of end pieces and the end face of insulating case 12 and clad welding.During cooling, the sidewall 38 discrepant contractions of insulating case 12 and end pieces.Yet at this moment welding is fixing mutually for the contact-making surface between each end face 53 and 55.So end pieces end face 55 can not be along the radially migration inwards of insulating case 12 end faces.Therefore, the sidewall sections adjacent with end face 55 is to the internal strain of circuit breaker center line.This just on the contact-making surface between end pieces and the insulating case, causes sizable stress.This residual stress is enough to make the sealed with brazing fracture between end pieces and the insulation shell.Even small energy to failure destruction vacuum seal, thereby the service behaviour of destruction vacuum circuit-breaker.
Carry according to the present invention, the wall thickness of cylindrical side wall 38 quite reduces, to reduce the stress on the contact-making surface.Wall thickness reduces to make wall that enough flexibilities are arranged, and reduces stress, otherwise, just may produce stress during heating and cooling in the housing assembling process.Yet the wall thickness that can not make whole end pieces has enough reducing.This reducing will reduce the intensity of end pieces inadequately.And between end pieces and insulating case, it is also also inadvisable that a discrete component that reduces such as columniform wall thickness is set.So at least, in each end of envelope assembly, require to increase a round splce.This joint also must have incomplete sealing and vacuum seal and break except that requiring to increase cost and the labour.
In contrast, the inventor waits and has reduced from the wall thickness of end face 55 to the sidewall 38 columnar portion parts 56 of end pieces end 51 stretching, extensions.In Yin Shu the embodiment, the outer wall attenuate makes the wall thickness of cylindrical wall portion 56 reach the 0.02+ inch in the above.Therefore, wall thickness be not more than all the other wall portion wall thickness of end pieces pact half.
In the embodiment of above citation, cylindrical wall portion 56, about 0.3 inch of the length of stretching out from end face 55.Like this, the elongation of thin wall cylindrical part 56 only is a very little part of end pieces total height (for example 2 inches).Column part 56 is quite thin quite long, is enough to provide sizable flexible, reduces the residual stress on the joint between end pieces and the insulating case.On the contrary, discoveries such as the inventor, the column part 56 of attenuate wall thickness is to quite short, and enough wall thickness are arranged, thereby the structural intergrity of induced damage resistive circuit breaker shell structure not.
End pieces is preferably utilized brazing alloy and insulating case 12 welding.Therefore, can be at end pieces metal end face, and between the insulating case end face, insert a soldering circle 57.Soldering circle 57 rotates before being preferably in soldering in advance, for example is welded on the end face 55 of end pieces with spot welding.So just, can be placed near the insulating case 12 the end pieces band with its soldering circle, in order to soldering.The brazing alloy that is used for desirable embodiment, fusion temperature are 925 ℃, and curing temperature is 880 ℃.
Vacuum circuit-breaker can be by following assembling.End pieces sheet metal blank manufacturing causes the stress that ruptures in order to avoid have.Earlier will be such as the sheet billet anneal of #304 steel, even its annealing.Be molded into the above-mentioned cup-shaped or the mitriform version of end 51 and cylindrical wall 38 then.Then wall 38 is cut into accurate end face 55.Thereafter, by pressing the above part of cutting circle post jamb 38, promptly its thickness of attenuate forms side wall portion 56.Finishing before these steps,, make the end pieces of making unstressed end pieces anneal again.
After end pieces is made, utilize element in traditional technology assembling.For example, can assemble the stationary end element respectively with suitable soldering circle and backing plate, and the element of movable end (working end just).If needed, can the time treat that accurate application is described, an end profile shielding is inserted end shield by citation above.Then can be with static sub-assembly and the soldering respectively of movable sub-assembly.Main shield 26 can be inserted in the insulating case 12, uses such as anchor clamps (being tab 27) its location.At last, can be by mode mentioned above, fixing static sub-assembly and active operation sub-assembly and insulating case 12, with the circuit breaker soldering and be evacuated.
Although more than disclose a specific embodiment of the present invention, but the people who is familiar with one's own profession skill can easily make various changes and modification, and do not break away from basic conception of the present invention, thereby this explanation is to comprise that all such belong to characteristics of the present invention, the change and the modification of design and scope.

Claims (15)

1, a kind of vacuum type circuit breaker feature has following:
(a) a kind of nonconductive material cylindrical shroud connects first and second metal end piece by sealing relationship on its opposite end;
(b) activity and fixed contact bar pass from this first and second end pieces respectively, are supported by these two ends parts;
(c) at least one of this end pieces has integrally formed end and a cylindrical side wall, becomes an integrative-structure;
(d) one of this contact bar is supported in this end;
(e) it is fixing that this cylindrical side wall has one of the opposite end of an end face and cylindrical insulating sleeve;
(f) this sidewall cylindrical part, from end face to end stretch, the wall thickness of this part, than the remainder wall thickness of this cylindrical side wall, and the wall thickness reduction of this end is quite a lot of, makes cylindrical wall and insulation be with different thermal deformations.
2, the vacuum circuit-breaker according to claim 1.It is cup-shaped it is characterized by one of them end pieces.
3,, it is characterized by the wall thickness of cylindrical part, less than 60 percent of cylindrical side wall remainder and end wall thickness according to claim 1 or 2 described vacuum circuit-breakers.
4, the vacuum circuit-breaker according to claim 3, the wall thickness that it is characterized by cylindrical part is less than 0.05 inch.
5, the vacuum circuit-breaker according to claim 3 is characterized by the height of the cylindrical part that reduces wall thickness, in 0.1 to 0.5 inch scope.
6, according to claim 1 or 2 described vacuum circuit-breakers, the opposite end that it is characterized by cylindrical shroud has metal layer, the end face general planar of cylindrical side wall, and and the metal layer soldering of one of circular cylindrical shell opposite end fix.
7, the vacuum circuit-breaker according to claim 1 it is characterized by one of end pieces and form with the thin utmost point base of the basic even metal of wall thickness, and the wall thickness of this cylindrical part is thinner than uniform wall thickness.
8, the vacuum circuit-breaker according to claim 7 is characterized by on the wall portion periphery of this cylindrical part and reduces thickness.
9, a kind of vacuum type circuit breaker is characterized as following:
(a) a kind of nonconductive material cylindrical shroud connects first and second metal end piece by sealing relationship on its opposite end;
(b) each of this end pieces, the integrative-structure of forming by integrally formed end and cylindrical side wall;
(c) end of this first and second end pieces is supported respectively and concentric armature contact bar and the fixed contact bar of circuit breaker vertical line;
(d) cylindrical side wall of each this end pieces is characterized as following:
(1) and a fixing end face of one of cylindrical shroud opposite end;
(2) one stretch to the cylindrical part of end from end face, and the wall thickness of this cylindrical side wall remainder of the wall ratio of cylindrical part and this end is quite a lot of, makes cylindrical wall be with different thermal deformations with insulation.
10, the vacuum circuit-breaker according to claim 9 is characterized by this end pieces except that the wall thickness reduction of this cylindrical part, forms with the basic even metal sheet billet of wall thickness.
11, the vacuum circuit-breaker according to claim 10 is characterized by end pieces and is roughly cup-shaped.
12, according to claim 9 or 10 described vacuum circuit-breakers, it has a main shield in addition, be rotated in one heart this armature contact bar and this fixed contact bar around, and be fixed on the insulating material cylindrical shroud.
13, the vacuum circuit-breaker according to claim 12 is characterized by the ledge that this cylindrical shroud has an inside at least, and this main shield has the interlocking sheet and protuberance clip at least one.
14, the vacuum circuit-breaker according to claim 12, it has basic first and second end portion shielding for the conical structure shape in addition, is separately fixed at the cylinder side wall on this first and second end pieces.
15, shell has the vacuum circuit-breaker manufacture method that the metal end piece soldering puts at cylindrical insulating material, and the contact bar of contact is installed in the end pieces support, and its manufacturing step is as follows:
(a) the sheet bar anneal of predetermined wall thickness will be arranged;
(b) the plate base is formed the basic cup-shaped end pieces that is, end pieces has a porose end, and cylindrical wall made in one piece is with it arranged, and tail end forms end face;
(c) reduce to stretch to the wall thickness of the cylindrical wall part of end from end face;
(d) with the anneal of cup point parts, discharge its stress;
(e) the bar sub-assembly with a contact-carrying is inserted with nose end parts and soldering;
(f) cylindrical insulating sleeve is set, his covering that metallizes is arranged on the one end at least;
(g) soldering is connected with cylindrical shroud metallization covering the end face of end pieces, thereby the wall thickness reduction of cylindrical wall partly is out of shape, and discharges the residual stress in end pieces and the insulating case contact-making surface.
CN198686106540A 1985-11-08 1986-10-14 The vacuum circuit-breaker envelope assembly Pending CN86106540A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US79614985A 1985-11-08 1985-11-08
US796,149 1985-11-08

Publications (1)

Publication Number Publication Date
CN86106540A true CN86106540A (en) 1987-06-17

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ID=25167433

Family Applications (1)

Application Number Title Priority Date Filing Date
CN198686106540A Pending CN86106540A (en) 1985-11-08 1986-10-14 The vacuum circuit-breaker envelope assembly

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JP (1) JPS62150620A (en)
CN (1) CN86106540A (en)
DE (1) DE3636966A1 (en)
GB (1) GB2182804A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103329235A (en) * 2010-12-22 2013-09-25 Abb技术股份公司 Interrupter insert for a circuit breaker arrangement

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3825407A1 (en) * 1988-07-27 1990-02-01 Sachsenwerk Ag SWITCH CHAMBER OF A VACUUM SWITCH
TW264530B (en) * 1993-12-24 1995-12-01 Hitachi Seisakusyo Kk
JP2941682B2 (en) * 1994-05-12 1999-08-25 株式会社東芝 Vacuum valve and method of manufacturing the same
FR2951314A1 (en) * 2009-10-12 2011-04-15 Schneider Electric Ind Sas BRAKE ASSEMBLY DEVICE FOR AN END HOOD ON A CYLINDRICAL BODY AND A VACUUM BULB COMPRISING SUCH A DEVICE

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59671Y2 (en) * 1978-06-23 1984-01-10 株式会社明電舎 Vacuum cutter
NL178680C (en) * 1979-03-05 1986-05-01 Hazemeijer Bv METHOD FOR ESTABLISHING A STAMP BRAZER CONNECTION BETWEEN METAL AND CERAMIC MATERIAL
JPS56156626A (en) * 1980-05-06 1981-12-03 Meidensha Electric Mfg Co Ltd Vacuum breaker
EP0043186B1 (en) * 1980-07-01 1985-01-23 Kabushiki Kaisha Meidensha Vacuum circuit interrupter
US4443672A (en) * 1982-02-11 1984-04-17 International Telephone & Telegraph Corporation Low capacitance radio frequency switch

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103329235A (en) * 2010-12-22 2013-09-25 Abb技术股份公司 Interrupter insert for a circuit breaker arrangement
CN103329235B (en) * 2010-12-22 2016-03-30 Abb技术股份公司 For the contact maker plug-in unit of electric circuit breaker apparatus

Also Published As

Publication number Publication date
DE3636966A1 (en) 1987-05-14
GB8622951D0 (en) 1986-10-29
JPS62150620A (en) 1987-07-04
GB2182804A (en) 1987-05-20

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