EP1476887A1 - Vacuum interrupter with a switch contact piece - Google Patents
Vacuum interrupter with a switch contact pieceInfo
- Publication number
- EP1476887A1 EP1476887A1 EP03742496A EP03742496A EP1476887A1 EP 1476887 A1 EP1476887 A1 EP 1476887A1 EP 03742496 A EP03742496 A EP 03742496A EP 03742496 A EP03742496 A EP 03742496A EP 1476887 A1 EP1476887 A1 EP 1476887A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- vacuum
- stem
- sliding contact
- contact surface
- contact
- 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
- 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
- H01H33/6606—Terminal arrangements
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H1/00—Contacts
- H01H1/58—Electric connections to or between contacts; Terminals
- H01H1/5833—Electric connections to or between contacts; Terminals comprising an articulating, sliding or rolling contact between movable contact and terminal
-
- 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
- H01H33/6606—Terminal arrangements
- H01H2033/6613—Cooling arrangements directly associated with the terminal arrangements
Definitions
- the invention relates to a vacuum holding tube with a switching contact piece, which has at its end facing away from the switching contact of the vacuum switching tube a stem, which is connected to a first sliding contact surface, which forms a sliding contact arrangement with a second sliding contact surface, the stem having a first section with a compared to the other sections of the stem has an enlarged circumference and the first sliding contact surface is arranged on the first section.
- the first sliding contact surface there is arranged on a thickened first section and is in electrically conductive connection with a second sliding contact surface.
- the vacuum holding tube resulting from the laid-open document has a switching contact.
- the switch contact is essentially formed from two switch contact pieces, one of the switch contact pieces being movable.
- the movable switching contact piece At its end facing away from the switching contact, the movable switching contact piece has a stem which is passed gas-tight through the wall of the vacuum interrupter by means of an elastic bellows.
- a fixed contact adjoins the wall, which is penetrated by the movable switching contact piece, to which the movable switching contact piece is connected in an electrically conductive manner.
- a self-contained derndes contact element made of beryllium bronze is provided, which has a helical spring-like shape and extends around the stem of the movable switching contact piece.
- the switching contact piece is electrically conductively connected to the fixed contact by the self-springing contact element.
- Such helical spring-like self-resilient contact elements ensure adequate electrical contacting. Due to the excellent electrical and thermal insulation of the vacuum inside the vacuum holding tube, essentially only the stem of the movable switching contact piece that is led out is available for dissipating the heat generated at the contact point. In addition to the transmission of the electrical power, the known helical spring-like self-resilient contact elements are only conditionally suitable for the transmission and transmission of heat to other assemblies. In particular in the arrangement known from the Offenlegungssc rift DE 196 03 157 AI, due to the direct arrangement of the self-resilient contact elements on the vacuum interrupter, a transfer of thermal energy to the surroundings is only possible to a limited extent.
- the present invention has for its object to dissipate the heat generated inside the vacuum interrupter in an improved manner.
- the object is achieved in that the first section has through openings.
- the available contact area of the sliding contact arrangement is enlarged by the enlarged scope. This makes it possible to determine the number of tact area and the second sliding contact surface in electrical and thermal connection points to increase. As the number of these points increases, the electrical load on each individual point is reduced and the transfer of thermal energy is improved.
- the first section with an enlarged circumference can, for example, be connected in one piece to the other parts.
- the penetrating openings cause an increase in the surface area that is available for giving off electricity heat. Furthermore, the openings provide a passage for a cooling medium.
- a cooling medium can be, for example, a gas or a liquid.
- the penetrating openings of the first section run from the end facing away from the vacuum holding tube to that end facing the vacuum switching tube.
- the second section moves through the medium surrounding it in the manner of a piston. This also flows through the openings.
- high currents such as, for example, short-circuit currents, which bring about a high thermal load
- improved cooling of the switch contact piece and of the stem via the first section is made possible.
- Section is formed by an intermediate piece different from the stem.
- an intermediate piece which forms the first section, it is possible to maintain the known construction of the stems of vacuum interrupters.
- the circumference of the first section can be selected variably by using different intermediate pieces.
- one and the same vacuum interrupter with the corresponding handle of the switching contact piece can be used by using different intermediate pieces in different switching devices.
- the intermediate piece itself can also temporarily store and radiate heat.
- a drive device is coupled to the intermediate piece.
- a further advantageous embodiment can provide that the second sliding contact surface is arranged on a hollow body, in particular in the form of a fitting.
- the hollow body Due to the arrangement of the second sliding contact surface on a hollow body, there is a special transition of the thermal energy ⁇ T in. allows the first sliding contact surface on the second sliding contact surface.
- the hollow body provides a large overlap area of the two sliding contact surfaces. Compared to individual, for example flat sections, is with such a hollow body also a favorable dielectric
- the hollow body at least partially holds the vacuum interrupter.
- the hollow body at least partially holds the vacuum interrupter.
- the combination of electrical and thermal contacting and the holder reduces the number of modules required. Furthermore, due to its large surface area, a hollow body is suitable for in turn releasing the thermal energy transferred to it to its surroundings.
- the hollow body has openings through which a medium can flow.
- Such a medium can be a gas, for example, which is arranged around the vacuum interrupter and the hollow body.
- Liquid media such as insulating oils, can also be used as further media.
- the surfaces of the heat-emitting assemblies can be provided with a coating. Coatings of this type are, for example, paint coatings which improve the emission and / or increase the surface area.
- at least one elastic contact element is connected to the first sliding contact surface.
- the contact elements are, for example, in the form of a ring-shaped strip consisting of an electrically conductive material.
- the strips have resilient fingers, which are punched out of the strips and embossed, for example.
- An advantageous embodiment can further provide that the elastic contact element is mounted in a groove running azimuthally around the longitudinal axis of the stem.
- the elastic contact element can be positioned in a simple manner by means of a groove running in a ring around the longitudinal axis of the stem.
- the contact element can be movably supported within the groove, but can be positioned in a stationary manner with respect to the first section.
- the shows Figure a vacuum interrupter with a switching contact piece and a sliding contact arrangement.
- a vacuum holding tube 1 is shown.
- the vacuum interrupter 1 is part of an interrupter unit of a switching pole of an electrical switch.
- the vacuum interrupter 1 has an insulating housing 2 and a first cover plate 3 and a second cover plate 4.
- a first contact piece 5 and a second contact piece 6 are arranged in the interior of the vacuum interrupter 1.
- the first contact piece 5 and the second contact piece 6 form a switching contact.
- a first stem 7 is movably guided through the second cover plate 4.
- a second stem 8 carries the second contact piece 6 and positions it rigidly on the first cover plate 3.
- a bellows 9 is arranged between the first stem 7 and the second cover plate 4 for the gas-tight passage of the first stem 7 through the wall of the vacuum interrupter 1.
- the vacuum interrupter 1 is arranged inside an insulating housing 10.
- the insulating housing 10 is essentially cylindrical and has ribbing 11 on its outer surface.
- the front ends of the insulating housing 10 are closed with a first end fitting 12 and a second end fitting 13.
- the first and the second end fittings 12, 13 are made of an electrically conductive material and also serve to connect the electrical conductors of a current path to be switched.
- the vacuum interrupter 1 is arranged in the interior of the insulating housing 10. Alternatively, it can be provided to arrange the vacuum interrupter 1 in an electrically conductive housing.
- the vacuum holding tube 1 is then opposite the store isolated housing.
- a first holding fitting 14 is connected to the first closing fitting 12 and a second holding fitting 15 is connected to the second closing fitting 13.
- the vacuum interrupter 1 is held between the two holding fittings 14, 15.
- the second holding valve 15 has a bore through which a screw 16 is passed.
- the screw 16 presses the first cover plate 3 of the vacuum holding tube 1 against the second holding armature 15 and makes contact with the second contact piece 6 with the second end fitting 13 via the second stem 8 and the first cover plate 3.
- the first holding armature 14 positions the vacuum holding tube 1 in an axial and radial manner Direction.
- Both the first holding fitting 14 and the second holding fitting 15 have at their ends facing the vacuum interrupter 1 beads 26a, b, which serve for dielectric shielding.
- the inside of the insulating housing 10 is filled with an insulating gas.
- the first holding fitting 14 is designed as a hollow body which has a cylindrical recess in its interior.
- the first stem 7 projects into this cylindrical recess.
- the first stem 7 has an intermediate piece 17.
- This intermediate piece 17 forms a first section, which has an enlarged circumference compared to the other sections of the stem 7.
- the first section has a first sliding contact surface 18.
- the cylindrical inner wall of the first holding fitting 14 is designed as a second sliding contact surface 19.
- Sliding contact surface 19 is mounted in a stationary manner with respect to the insulating housing 10.
- the first sliding contact surface 18 and the second sliding contact surface 19 form a sliding contact arrangement voltage.
- the first section of the intermediate piece 17 has a first annular groove 20a and a second annular groove 20b.
- An annular, resiliently elastic contact element is inserted into each of the annular grooves 20a, 20b.
- the contact between the first sliding contact surface 18 and the second sliding contact surface 19 is improved by the elastic contact elements.
- the number of contact elements can be selected. Depending on the current load, one, two or more contact elements can be arranged on the intermediate piece 17.
- the elastic contact elements are mounted in a stationary manner on the second contact surface 19.
- the first section is formed by a separate intermediate piece 17. It can be provided that this intermediate piece 17 is formed in one piece as part of the first stem 7.
- the intermediate piece 17 has a pin 21 at its end facing away from the vacuum interrupter 1.
- the arrow provided with the reference symbol 23 illustrates the movement of the first contact piece 5 when the switching contact closes.
- the first holding fitting 14 has a plurality of openings 24a, b, c, d.
- the insulating gas arranged in the interior of the insulating housing 10 flows through the openings 24a, b, c, d of the first holding fitting 14.
- the intermediate piece 17 has openings 25a,
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- High-Tension Arc-Extinguishing Switches Without Spraying Means (AREA)
- Thermally Actuated Switches (AREA)
- Slide Switches (AREA)
- Push-Button Switches (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10207892A DE10207892B4 (en) | 2002-02-20 | 2002-02-20 | Vacuum interrupter with a switch contact piece |
DE10207892 | 2002-02-20 | ||
PCT/DE2003/000583 WO2003071567A1 (en) | 2002-02-20 | 2003-02-14 | Vacuum interrupter with a switch contact piece |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1476887A1 true EP1476887A1 (en) | 2004-11-17 |
EP1476887B1 EP1476887B1 (en) | 2009-04-22 |
Family
ID=27740379
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP03742496A Expired - Lifetime EP1476887B1 (en) | 2002-02-20 | 2003-02-14 | Vacuum interrupter with a switch contact piece |
Country Status (6)
Country | Link |
---|---|
US (1) | US7115831B2 (en) |
EP (1) | EP1476887B1 (en) |
JP (1) | JP4405265B2 (en) |
CN (1) | CN1302499C (en) |
DE (2) | DE10207892B4 (en) |
WO (1) | WO2003071567A1 (en) |
Families Citing this family (32)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10305169B4 (en) * | 2003-01-31 | 2005-01-27 | Siemens Ag | Arrangement with a vacuum interrupter |
DE10350578A1 (en) * | 2003-10-27 | 2005-06-09 | Siemens Ag | Gas-tight encapsulating housing of an electrical switching device |
KR101160276B1 (en) | 2007-10-02 | 2012-06-28 | 에이비비 테크놀로지 아게 | Pole part of a medium-voltage switching device |
JP4568765B2 (en) * | 2008-01-07 | 2010-10-27 | 株式会社日立製作所 | Vacuum switchgear |
EP2139016A1 (en) * | 2008-06-24 | 2009-12-30 | ABB Technology AG | Pole part of a medium-voltage or high-voltage switchgear assembly, and method for its production |
DE102008059670B3 (en) * | 2008-11-26 | 2010-06-17 | Siemens Aktiengesellschaft | Vacuum switch with fixed terminals on both sides |
DE102011086810B3 (en) * | 2011-11-22 | 2013-02-28 | Siemens Aktiengesellschaft | Pole shell for a circuit breaker |
WO2013144969A2 (en) * | 2012-03-30 | 2013-10-03 | Crompton Greaves Limited | An improved three-phase disconnector |
DE102012211475B4 (en) * | 2012-07-03 | 2019-11-21 | Siemens Aktiengesellschaft | Vacuum interrupter |
EP2720244A1 (en) * | 2012-10-11 | 2014-04-16 | ABB Technology AG | A pole part of a circuit-breaker arrangement with a heat sink element |
EP2720245A1 (en) * | 2012-10-15 | 2014-04-16 | ABB Technology AG | Assembled pole part with pole part frame |
CN103219192A (en) * | 2013-03-19 | 2013-07-24 | 启东德佳电器配件有限公司 | Improved breaker |
DE102013222319A1 (en) * | 2013-11-04 | 2015-05-07 | Siemens Aktiengesellschaft | Connector for a switch pole of a switching device |
CN106256060B (en) * | 2014-02-20 | 2018-12-04 | 库珀技术公司 | Modular switching device insulation system |
DE102014211855A1 (en) * | 2014-06-20 | 2015-12-24 | Siemens Aktiengesellschaft | Vacuum interrupter and method of making a vacuum interrupter |
DE102014212583A1 (en) * | 2014-06-30 | 2015-12-31 | Siemens Aktiengesellschaft | Avoid misalignment of a drive rod of a circuit breaker |
GB2527800A (en) * | 2014-07-02 | 2016-01-06 | Eaton Ind Netherlands Bv | Circuit breaker |
EP3026689B1 (en) * | 2014-11-27 | 2018-06-27 | Tyco Electronics UK Limited | High voltage circuit breaker, system, vacuum interrupter module, and associated drive module |
USD800667S1 (en) | 2015-02-20 | 2017-10-24 | Cooper Technologies Company | Modular switchgear insulation device |
EP3285276B1 (en) * | 2016-08-19 | 2021-09-29 | General Electric Technology GmbH | Drive rod and method of manufacturing a drive rod |
DE102016218316A1 (en) | 2016-09-23 | 2018-03-29 | Siemens Aktiengesellschaft | vacuum switch |
DE102017206518A1 (en) * | 2017-04-18 | 2018-10-18 | Siemens Aktiengesellschaft | Receiving device for vacuum interrupters |
DE102017206754A1 (en) | 2017-04-21 | 2018-10-25 | Siemens Aktiengesellschaft | Switchgear drive arrangement |
DE102017222933A1 (en) * | 2017-12-15 | 2019-06-19 | Siemens Aktiengesellschaft | High voltage circuit breaker and method of supporting a vacuum interrupter in the high voltage circuit breaker |
EP3671794B1 (en) * | 2018-12-20 | 2023-02-08 | ABB Schweiz AG | Medium voltage switching pole |
DE102019202741A1 (en) * | 2019-02-28 | 2020-09-03 | Siemens Aktiengesellschaft | Vacuum switchgear for medium and high voltage applications |
DE102019216663B4 (en) * | 2019-10-29 | 2023-02-02 | Siemens Aktiengesellschaft | Vacuum switching device for a circuit with main and auxiliary current path |
DE102020200738A1 (en) | 2020-01-22 | 2021-07-22 | Siemens Aktiengesellschaft | Vacuum switch |
DE102020210183A1 (en) * | 2020-08-12 | 2022-02-17 | Siemens Energy Global GmbH & Co. KG | High voltage circuit breaker and method of making a high voltage circuit breaker |
DE102020211516A1 (en) | 2020-09-14 | 2022-03-17 | Siemens Energy Global GmbH & Co. KG | High voltage circuit breaker with contact sleeve and method of manufacturing the high voltage circuit breaker |
DE102020211512A1 (en) | 2020-09-14 | 2022-03-17 | Siemens Energy Global GmbH & Co. KG | vacuum switch |
US12094670B2 (en) * | 2022-02-22 | 2024-09-17 | S&C Electric Company | Snap together assembly for vacuum interrupter drive rod |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2079896A5 (en) * | 1970-02-16 | 1971-11-12 | Merlin Gerin | |
US4168414A (en) * | 1975-03-06 | 1979-09-18 | Mcgraw-Edison Company | Protective switch device and operating mechanism therefor |
US4384179A (en) * | 1981-02-12 | 1983-05-17 | Westinghouse Electric Corp. | Stiff flexible connector for a circuit breaker or other electrical apparatus |
US4489226A (en) * | 1982-09-03 | 1984-12-18 | Mcgraw-Edison Company | Distribution class puffer interrupter |
US4568804A (en) * | 1983-09-06 | 1986-02-04 | Joslyn Mfg. And Supply Co. | High voltage vacuum type circuit interrupter |
IT1173099B (en) * | 1984-01-20 | 1987-06-18 | Sace Spa | COMPRESSED FLUID EXTINGUISHED ARC EXTINGUISHER |
DE3529386A1 (en) * | 1985-08-16 | 1987-02-26 | Calor Emag Elektrizitaets Ag | Encapsulated high-voltage switching device |
DE4445172C2 (en) * | 1994-12-17 | 1998-07-16 | Abb Patent Gmbh | Control panel |
DE19603157A1 (en) * | 1996-01-19 | 1997-07-24 | Fachhochschule Fuer Technik Un | HV vacuum switch with vacuum switching chamber |
US5753875A (en) * | 1996-10-15 | 1998-05-19 | Eaton Corporation | Heat sink for contact stems of a vacuum interrupter and a vacuum interrupter therewith |
-
2002
- 2002-02-20 DE DE10207892A patent/DE10207892B4/en not_active Expired - Fee Related
-
2003
- 2003-02-14 CN CNB038023776A patent/CN1302499C/en not_active Expired - Fee Related
- 2003-02-14 WO PCT/DE2003/000583 patent/WO2003071567A1/en active Application Filing
- 2003-02-14 US US10/505,023 patent/US7115831B2/en not_active Expired - Fee Related
- 2003-02-14 DE DE50311448T patent/DE50311448D1/en not_active Expired - Lifetime
- 2003-02-14 EP EP03742496A patent/EP1476887B1/en not_active Expired - Lifetime
- 2003-02-14 JP JP2003570377A patent/JP4405265B2/en not_active Expired - Fee Related
Non-Patent Citations (1)
Title |
---|
See references of WO03071567A1 * |
Also Published As
Publication number | Publication date |
---|---|
DE10207892B4 (en) | 2004-02-05 |
US20050092713A1 (en) | 2005-05-05 |
US7115831B2 (en) | 2006-10-03 |
DE50311448D1 (en) | 2009-06-04 |
JP4405265B2 (en) | 2010-01-27 |
CN1302499C (en) | 2007-02-28 |
CN1618112A (en) | 2005-05-18 |
DE10207892A1 (en) | 2003-10-02 |
WO2003071567A1 (en) | 2003-08-28 |
JP2005518635A (en) | 2005-06-23 |
EP1476887B1 (en) | 2009-04-22 |
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