EP1897107A1 - Ampoule a vide pour un appareil de protection electrique tel un interrupteur ou un disjoncteur - Google Patents
Ampoule a vide pour un appareil de protection electrique tel un interrupteur ou un disjoncteurInfo
- Publication number
- EP1897107A1 EP1897107A1 EP06764739A EP06764739A EP1897107A1 EP 1897107 A1 EP1897107 A1 EP 1897107A1 EP 06764739 A EP06764739 A EP 06764739A EP 06764739 A EP06764739 A EP 06764739A EP 1897107 A1 EP1897107 A1 EP 1897107A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- contacts
- screen
- screens
- partial
- potential
- 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
- H01H33/662—Housings or protective screens
- H01H33/66261—Specific screen details, e.g. mounting, materials, multiple screens or specific electrical field considerations
-
- 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
- H01H2033/66284—Details relating to the electrical field properties 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
Definitions
- the present invention relates to a vacuum interrupter for an electrical protection device such as a disconnector, a switch or a circuit breaker, said bulb comprising a casing of substantially cylindrical shape closed by two bottoms, two contacts extending axially inside the housing. envelope, at least one said mobile contact, is connected to a control mechanism and is slidably mounted between a closing position of the contacts allowing the passage of current and a position in which the contacts are separated and hold the voltage between them, and at least one conductive screen disposed around at least one of the contacts.
- the contacts are surrounded by a single screen with the function of protecting the insulating parts projections • Metal and guide lines équipotenti they dielectric to avoid dangerous concentrations.
- This screen surrounds both contacts and is in the middle of the potential of the two contacts.
- the potential is distributed homogeneously between the two contacts both inside and outside the bulb.
- the distance between the screen and the contacts is chosen so that the interaction between the screen and the contacts is less important than the interaction between the contacts. This minimizes the electric field between the contacts and the screen relative to that between the contacts. This avoids the risk of ignition between the contact and the screen.
- the higher the application voltage the greater the distance between the contacts and the length of the ceramics. In order to avoid firing between the contacts and the screen, the diameter of the screen must also increase.
- the diameter of ceramics is proportional to the diameter of the screen, which generates an additional cost.
- the diameter of the outer vessel also increases with the diameter of the bulb, which also generates an additional cost.
- the present invention solves these problems and proposes a vacuum bulb of simple design to significantly reduce the size of the bulbs and therefore their cost, and improve their electrical behavior.
- the subject of the present invention is a vacuum interrupter, this ampoule being characterized in that it comprises at least two screens comprising a so-called mid-potential screen mounted between the two contacts and at least one partial said interposed screen. between said half-potential screen and one of the contacts, the distance between said mid-potential screen and the contacts being chosen so that the electric field present at the edge of the contact passes from the contact to the partial screen (or conversely from the partial screen to the contact depending on the polarity of the voltage).
- said bulb comprises three screens comprising a half-potential screen and two partial screens respectively said first and second, the two partial screens being interposed between the half-potential screen and the two contacts respectively.
- said bulb comprises three screens
- the insulating envelope comprises four ceramic parts placed end to end and the three screens are placed respectively at the three junctions between two joined ceramic parts.
- the half-potential screen is an integral part of the envelope of the bulb.
- the distance between the half-potential screen and the contacts expressed as a percentage of the distance between the contacts is between 25% and 40%.
- the aforementioned distance is substantially 31%.
- the height of the partial screen or partial screens exceeds the height of the contact or the contacts that it surrounds or surrounds, or as the case of the partial screen or partial screens that it surrounds a value between 0 and S / 3, where S is the distance between the contacts.
- the height of the partial screen or partial screens exceeds (s) the height of the contact (s) they surround (s) with a value substantially equal to S / 4 .
- At least one of the screens is cylindrical.
- said bulb comprises at least one other partial screen, interposed between on the one hand at least one of the contacts and respectively one of said partial screens mentioned above, the distance between the screen at mid-potential and the contacts being chosen so that the electric field at the edge of the contacts is directed towards the partial screen (s) surrounding the contacts directly .
- it comprises two partial screens said first and second interposed between the half-potential screen and respectively the two contacts and two other partial screens said third and fourth interposed respectively between the first and second partial screens and the two contact.
- the screens and the contacts have a relative capacitance such that the difference of potential ⁇ U between two screens, one surrounding the other is substantially identical to that between a contact and the screen surrounding it.
- this potential difference ⁇ U is between 5% and 35% of the total voltage.
- this potential difference ⁇ U is substantially 25% of the total voltage.
- this potential difference ⁇ U does not vary more than 40% with respect to the total U ratio / (N +1), U total being the voltage between the contacts, it is up to say in relation to a voltage distributed evenly between the contacts.
- Figure 1 is an axial sectional view of a vacuum bulb according to a first embodiment of the invention comprising three screens;
- FIG. 2 is a graphical representation showing the distance between the half-potential screen and the contacts, as a function of the distance between the contacts,
- FIG. 3 is a view in axial section of a vacuum interrupter according to a second embodiment of the invention comprising three screens
- FIG. 4 is a view in axial section of a vacuum interrupter according to another embodiment according to the invention comprising three screens
- FIG. 5 is a view in axial section of a vacuum interrupter according to another embodiment according to the invention comprising five screens.
- FIGS. 1,3,4 and 5 show a vacuum interrupter A designed in particular to be integrated into a medium-voltage electrical circuit breaker in order to cut off an electrical circuit in the event of a fault or when ordering a circuit. voluntary opening of the electric circuit.
- This vacuum interrupter A comprises, in a manner known per se, a cylindrical envelope E closed by two bottoms inside which are housed two arcing contacts respectively a fixed arcing contact 1 and a movable arcing contact 2.
- movable contact 2 is mechanically connected via an actuating rod to a control device (not shown), said rod being connected to said device by one of its ends and being secured to the movable arcing contact by its opposite end.
- This control device is able to move the aforementioned rod and the movable contact in translation inside the casing between two positions respectively a closed position of the contacts corresponding to a normal operation of the device and an open position. or separation of the contacts after the appearance of a fault in the electrical circuit to be protected or during a command of voluntary opening of the electrical circuit.
- this cylindrical envelope comprises a single ceramic 4 and the bulb comprises three screens 8, 9, 10 located around the contacts 1, 2, the screens 8, 9, 10 being all disposed inside the bulb.
- These screens include a half-potential screen 9, or 50% said screen, surrounding the two contacts 1,2. If the contacts 1 and 2 respectively have a voltage of 100% and 0%, the potential of the screen is at 50% in the middle of the two potentials of the contacts.
- These screens also include two so-called partial screens 8, 10 respectively said first screen 8 at 75% and a second screen 10 at 25%.
- these partial screens 8, 10 are interposed between the screen at mid-potential 9 and the contacts 1,2, said partial screens 8,10 being superimposed over part of their length with the screen at mid-potential 9.
- this cylindrical envelope E comprises four cylindrical ceramic portions 4,5,6,7, said first, second, third and fourth arranged end to end.
- the mid-potential screen 9 is fixed between the two central ceramics 5,6, while the two partial screens 8,10, respectively first 8 and second 10, are respectively fixed between the first 4 and second ceramics 5, for the 8, and between the third and fourth ceramics 6,7, for the other 10.
- the first partial screen 8 surrounds the fixed contact 1 while the second partial screen 10 surrounds the movable contact 2.
- the distance between the mid-potential screen 9 and the contacts 1,2 is such that the electric field at the edge of the contacts is directed towards the partial screens 8,10 surrounding said contacts so as to favor priming between contacts and displays 8,10 rather than between contacts.
- the bulb according to another embodiment comprises three screens 11,12,13 and four ceramics 4,5,6,7 the mid-potential screen 12 forming part of the envelope of the bulb.
- the bulb according to another embodiment comprises five screens and a single ceramic.
- the electric field at the end of the contact points to (or comes from
- the nearest screen around it For a screen configuration with more than three screens, the field or end of the screen points
- the screens and the contacts have a capacitance between them such that the potential difference ⁇ U between two surrounding screens or between a contact and the screen surrounding it is almost identical.
- the potential difference. ⁇ U must, to be acceptable, be between 15% and 35%, and will advantageously be close to 25% of the total voltage.
- this potential difference ⁇ U does not vary more than 40% with respect to the total U ratio / (N +1), U total being the voltage between the contacts.
- the partial screens 8, 10 interspersed exceed the contact -which they surround with a value H between 0 and S / 3, where S is the distance between the contacts and advantageously a height close to S / 4.
- the distance SE1 between the half-potential screen 9 and the contact is, to be acceptable, between 25% and 40% of the distance between the contacts S, and preferably equal to 31%.
- ⁇ U deviation of voltage (expressed as a percentage of the total voltage) between two screens that surround each other or between a contact and the screen around it.
- H height of the screens; either in relation to the contact or for two surrounding screens.
- the maximum electric field at the edge of the contacts is not influenced by the presence of the screen.
- this electric field has the value El. Indeed, this situation is similar to a situation in which no 50% screen is provided.
- the field El is the weakest field that can exist between the two contacts in a single-screen bulb. If the screen is close to the two contacts, the electric field will be influenced by this approximation and will begin to increase. At the beginning of this approximation, the electric field at the edge of the contact face still points to the other contact.
- SE tilting which marks a transition in the direction of the electric field so that for SE> SE (tilting), the field electrical point towards the other contact and that for SE ⁇ SE (tilt) the electric field points towards the screen at 50%.
- SE tilting a so-called tilt distance
- SE tilting which marks a transition in the direction of the electric field so that for SE> SE (tilting), the field electrical point towards the other contact and that for SE ⁇ SE (tilt) the electric field points towards the screen at 50%.
- Figure 2 shows the distance between the contacts and the central screen as a function of the distance between the contacts.
- Curve a represents the distance between the contacts and the screen, recommended by the prior art, in particular in patent DE 10029763.
- Curve b represents the minimum distance which, according to the prior art, makes it possible to avoid interaction between the contacts. and the screen.
- Curve c represents, in a three-screen configuration according to the invention, the distance between the contacts and the screen which gives an electric field to the edge of the contacts identical to the case of the curve a, and the curve d represents the distance between the contacts and the screen which gives an electric field to the edge of the contacts identical to that of the curve b.
- FIG. 2 shows that, according to the prior art, the distance between the half-potential screen and the contacts is between the curves a and b, whereas according to the invention, this distance lies between the curves c and D.
- a light bulb according to the invention comprising five screens or seven screens as shown in Figures 4 and 5, as shown in the table. Indeed, for a five-screen bulb, the distance between the screen and the contacts is between 0.19 * S and 0.21 * S, where S is the distance between the contacts. An even greater gain can be obtained with a bulb according to the invention comprising seven screens, for which the distance between the screen and the contacts is between 0.14 * S and 0.16 * S.
- the invention covers any embodiment of bulb having an odd number of screens, the potential screens closer to that of the contacts being placed so as to hide over a certain length of the screen at mid-potential. or the other partial screens, in the case where the bulb has more than three screens, with respect to this contact, the electric field at the end of the contact pointing to (or coming from according to the polarity of the voltage) the screen the most surrounding area and the electric field at the end of the partial screen (other than the half-potential screen) pointing to (or coming from, depending on the polarity of the voltage) the nearest partial screen that 'surrounded.
Landscapes
- High-Tension Arc-Extinguishing Switches Without Spraying Means (AREA)
- Vessels And Coating Films For Discharge Lamps (AREA)
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR0506550A FR2887683A1 (fr) | 2005-06-28 | 2005-06-28 | Ampoule a vide pour un appareil de protection electrique tel un interrupteur ou un disjoncteur |
| PCT/FR2006/001274 WO2007003727A1 (fr) | 2005-06-28 | 2006-06-06 | Ampoule a vide pour un appareil de protection electrique tel un interrupteur ou un disjoncteur |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1897107A1 true EP1897107A1 (fr) | 2008-03-12 |
| EP1897107B1 EP1897107B1 (fr) | 2012-04-25 |
Family
ID=35519998
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP06764739A Not-in-force EP1897107B1 (fr) | 2005-06-28 | 2006-06-06 | Ampoule a vide pour un appareil de protection electrique tel un interrupteur ou un disjoncteur |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US8445804B2 (fr) |
| EP (1) | EP1897107B1 (fr) |
| JP (1) | JP5095614B2 (fr) |
| CN (2) | CN101208763A (fr) |
| AT (1) | ATE555490T1 (fr) |
| CA (1) | CA2612730C (fr) |
| FR (1) | FR2887683A1 (fr) |
| WO (1) | WO2007003727A1 (fr) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011003719A1 (fr) * | 2009-07-06 | 2011-01-13 | Siemens Aktiengesellschaft | Tube de commutation à vide |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102007004430B4 (de) * | 2007-01-24 | 2009-02-05 | Siemens Ag | Vakuumschalter |
| ES2523279T3 (es) * | 2010-03-01 | 2014-11-24 | Eaton Industries (Netherlands) B.V. | Una disposición de interrupción para un aparellaje eléctrico |
| KR101100708B1 (ko) | 2010-05-13 | 2011-12-30 | 엘에스산전 주식회사 | 진공 차단기 |
| JP5475601B2 (ja) * | 2010-09-15 | 2014-04-16 | 株式会社東芝 | 真空バルブ |
| EP2469561B1 (fr) * | 2010-12-23 | 2017-04-05 | ABB Schweiz AG | Agencement d'interrupteur sous vide pour disjoncteur |
| CN102254734B (zh) * | 2011-06-30 | 2013-10-16 | 西安交通大学 | 高电压单断口真空灭弧室 |
| US10978256B1 (en) | 2013-03-15 | 2021-04-13 | Innovative Switchgear IP, LLC | Electrical switching device |
| KR102545133B1 (ko) * | 2016-04-05 | 2023-06-19 | 엘에스일렉트릭(주) | 진공 차단기의 진공 인터럽터 |
| DE102016214750A1 (de) * | 2016-05-19 | 2017-11-23 | Siemens Aktiengesellschaft | Verfahren zur Herstellung eines keramischen Isolators |
| JP7028270B2 (ja) * | 2020-03-23 | 2022-03-02 | 株式会社明電舎 | 真空インタラプタおよび真空遮断器 |
| EP4177924B1 (fr) * | 2021-11-04 | 2025-12-31 | Abb Schweiz Ag | Ensemble interrupteur à vide, appareil de commutation comprenant un ensemble interrupteur à vide, et procédé de configuration d'ensemble interrupteur à vide |
| US12362115B2 (en) * | 2021-12-02 | 2025-07-15 | Meidensha Corporation | Vacuum interrupter |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1027786A (en) * | 1965-02-03 | 1966-04-27 | Gen Electric | Improvements in vacuum type electric circuit interrupters |
| GB1441479A (en) * | 1973-02-16 | 1976-06-30 | Meidensha Electric Mfg Co Ltd | Vacuum circuit breaker assembly |
| JPS49105969A (fr) * | 1973-02-16 | 1974-10-07 | ||
| JPS53146179A (en) * | 1977-05-25 | 1978-12-19 | Tokyo Shibaura Electric Co | Vacuum valve |
| US4215255A (en) * | 1978-01-05 | 1980-07-29 | Electric Power Research Institute, Inc. | Vacuum arc switching device with internal shielding |
| JPS5626271Y2 (fr) * | 1978-08-31 | 1981-06-22 | ||
| JPS5582738U (fr) * | 1978-12-04 | 1980-06-07 | ||
| JPS5780625A (en) * | 1980-11-06 | 1982-05-20 | Meidensha Electric Mfg Co Ltd | Vacuum breaker |
| CN1016121B (zh) * | 1987-09-29 | 1992-04-01 | 三菱电机株式会社 | 真空放电装置 |
| JP3664899B2 (ja) * | 1998-11-27 | 2005-06-29 | 株式会社東芝 | 真空開閉装置 |
| DE10029763B4 (de) | 2000-06-16 | 2009-01-15 | Siemens Ag | Vakuumschaltröhre |
| CN2442381Y (zh) * | 2000-09-01 | 2001-08-08 | 山东晨鸿电工有限责任公司 | 改进的高压真空灭弧室 |
-
2005
- 2005-06-28 FR FR0506550A patent/FR2887683A1/fr not_active Withdrawn
-
2006
- 2006-06-06 CN CNA2006800229141A patent/CN101208763A/zh active Pending
- 2006-06-06 WO PCT/FR2006/001274 patent/WO2007003727A1/fr not_active Ceased
- 2006-06-06 CN CN201410520294.0A patent/CN104299838A/zh active Pending
- 2006-06-06 US US11/922,046 patent/US8445804B2/en active Active
- 2006-06-06 CA CA2612730A patent/CA2612730C/fr active Active
- 2006-06-06 EP EP06764739A patent/EP1897107B1/fr not_active Not-in-force
- 2006-06-06 JP JP2008518894A patent/JP5095614B2/ja active Active
- 2006-06-06 AT AT06764739T patent/ATE555490T1/de active
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2007003727A1 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011003719A1 (fr) * | 2009-07-06 | 2011-01-13 | Siemens Aktiengesellschaft | Tube de commutation à vide |
| RU2510094C2 (ru) * | 2009-07-06 | 2014-03-20 | Сименс Акциенгезелльшафт | Вакуумная переключающая лампа |
| US8847097B2 (en) | 2009-07-06 | 2014-09-30 | Siemens Aktiengesellschaft | Vacuum interrupter |
Also Published As
| Publication number | Publication date |
|---|---|
| CA2612730A1 (fr) | 2007-01-11 |
| JP2008544470A (ja) | 2008-12-04 |
| EP1897107B1 (fr) | 2012-04-25 |
| CN104299838A (zh) | 2015-01-21 |
| CN101208763A (zh) | 2008-06-25 |
| US8445804B2 (en) | 2013-05-21 |
| CA2612730C (fr) | 2014-04-29 |
| FR2887683A1 (fr) | 2006-12-29 |
| WO2007003727A1 (fr) | 2007-01-11 |
| US20090095718A1 (en) | 2009-04-16 |
| ATE555490T1 (de) | 2012-05-15 |
| JP5095614B2 (ja) | 2012-12-12 |
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