WO2016066682A1 - Interrupteur ou disjoncteur a moyenne ou haute tension, pourvu de contacts fixes ameliores, et procede d'utilisation - Google Patents
Interrupteur ou disjoncteur a moyenne ou haute tension, pourvu de contacts fixes ameliores, et procede d'utilisation Download PDFInfo
- Publication number
- WO2016066682A1 WO2016066682A1 PCT/EP2015/074976 EP2015074976W WO2016066682A1 WO 2016066682 A1 WO2016066682 A1 WO 2016066682A1 EP 2015074976 W EP2015074976 W EP 2015074976W WO 2016066682 A1 WO2016066682 A1 WO 2016066682A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- switching
- fixed contacts
- contacts
- circuit breaker
- contact
- Prior art date
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
- H01H33/02—Details
- H01H33/04—Means for extinguishing or preventing arc between current-carrying parts
- H01H33/12—Auxiliary contacts on to which the arc is transferred from the main contacts
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H1/00—Contacts
- H01H1/06—Contacts characterised by the shape or structure of the contact-making surface, e.g. grooved
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H1/00—Contacts
- H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
- H01H1/36—Contacts characterised by the manner in which co-operating contacts engage by sliding
- H01H1/38—Plug-and-socket contacts
- H01H1/385—Contact arrangements for high voltage gas blast circuit breakers
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H2203/00—Form of contacts
- H01H2203/036—Form of contacts to solve particular problems
- H01H2203/044—Form of contacts to solve particular problems to achieve a predetermined sequence of switching
Definitions
- the subject of the present invention is a switch or circuit breaker, medium or high voltage, provided with improved fixed contacts, and the method of use of this circuit breaker.
- the communication between a closed state and an open state is effected by moving a movable contact along a path.
- the fixed contacts touch a sliding surface of the movable contact, and the current flows from one fixed contact to the other through the movable contact, until one of the fixed contacts reaches an interruption of the sliding surface and then leave the contact.
- the electric current is then transferred through the arcing contacts, leaving the permanent contacts; the arc appears between the arcing contacts, at a location of the device that may be chosen to cause less significant damage; and it can then be blown by a stream of gas, compressed in a chamber by the moving contact stroke and then released by the opening of a valve, as is known.
- the electric arc is not completely eliminated between the permanent contacts, but that there remains a brief arc, called switching, until the Current flows entirely through the arcing contacts.
- This switching arc can also damage the equipment because of its high temperature, which can be as high as a few hundred or so thousands of degrees, produce a local melting and an eroson of the matter of the contacts, and still projections of particles in the neighborhoods. This results in a weakening of the dielectric strength of the equipment through the solid elements or the surrounding gas and the risks of current and breakdown ignition.
- the invention proceeds from another idea: to reduce the switching arc, as well as its effects, by dividing it in two, and making it appear simultaneously or almost to the two fixed contacts.
- the invention relates, in general form, to an electrical apparatus, switch or circuit breaker, comprising a movable contact having a switching path from a closed state to an open state of the apparatus and a surface of sliding, a first fixed contact and a second fixed contact touching the sliding surface, a first interruption of the sliding surface crossed by the first fixed contact during the switching stroke; characterized in that the sliding surface has a second interruption crossed by the second fixed contact during the switching stroke, essentially at the same time that the first interruption is crossed by the first fixed contact.
- the fixed contacts cross together the interruptions of the sliding surface, that is to say at the same time, or with a slight shift of time chosen to allow the apparatus to perform a method of power failure where, as a function of a suitable speed of the moving contact during the running from the closed state to the open state, simultaneous switching arcs are created between the switching parts and the interruptions of the sliding surface of the mobile contact.
- each of the fixed contacts comprises a main part and a switching part, the main part and the switching part being electrically connected, both touching the sliding surface. , but being arranged so that electricity preferably passes through the main part between the fixed contact and the movable contact; and in that, for each of the fixed contacts, the main part reaches the interruption of the sliding surface before the switching portion.
- the condition to be respected is that the fixed contacts are disconnected together, almost simultaneously, from the moving contact by crossing a difference in level thereof.
- FIG. 1 is a view of a high or medium voltage circuit breaker according to the prior art
- FIG. 2 illustrates permanent fixed contacts that can be used for the invention
- FIGS. 3, 4, 5, 6 and 7 detail the switching steps, from the closing to the opening, of one embodiment of the invention
- FIGS. 8 and 9 represent the extinction sequence of the switching arc.
- Figure 1 schematically shows a circuit breaker according to the prior art, wherein a movable contact 1, tube-shaped, slides to the left, under the action of a control mechanism, to open the circuit breaker. It has sliding surfaces that are touched by two fixed contacts 3 and 4 (on the same sliding surface 2 here, which is not necessary).
- the circuit breaker is also provided with mutually sliding arc contacts one on the other and electrically connected to the movable contact 1 and the first fixed contact 3.
- the sliding surface 2 stops at an end 6 of the movable contact 1.
- the fixed contacts of the invention can have the appearance shown in FIG. 2. They comprise a main part 7, directly connected to a current carrying line 8, and a switching part 9, which is an auxiliary part, it also connected to this line 8, but in a way that leaves more difficult to pass the current.
- the switching part 9 can thus be welded to the line 8 by a tip 10 and be constructed of a less electrically conductive material than the main part 7.
- the parts 7 and 9 are designed to touch the sliding surface 2 together, at a short distance from each other, when the circuit breaker is closed.
- the invention could be implemented with unitary fixed contacts such as those (3 and 4) of Figure 1, with perhaps less efficiency.
- FIG 3 shows an embodiment of the invention where the fixed contacts 3 and 4 have been replaced by fixed contacts 11 and 12 constructed in accordance with Figure 2. It shows a switching state fairly close to the opening, where the main part 7 of the first fixed contact 11 is located not far from the end 6, the switching portion 9 being a little further away.
- the moving contact, now 13, comprises an intermediate slope 19, one end face 20 is another interruption of the sliding track 2, and the main part 7 of the second fixed contact 12 is close.
- the first part to separate will be the main part 7 of the second fixed contact 12 ( Figure 4); then the main part 7 of the first fixed contact 11 (Figure 5); then the switching portion 9 of the second fixed contact 12 ( Figure 6); and finally the switching portion 9 of the first fixed contact 11 ( Figure 7).
- Some variants of operation are however accepted. This is how the main parts 7 can separate in any order, and the switching parts 9 likewise; they can also separate simultaneously; and the states of Figures 5 and 6 could occur in reverse order.
- Curve 16 of FIG. 8 represents the current produced across the circuit breaker.
- the switching arc 14 would, in the absence of the second arc 15, have a decreasing intensity in a substantially linear fashion, according to the segment 17, and interrupts at time t + ⁇ , the current being then taken up by the arc contacts 5.
- the other switching arc 15 starts at or starts immediately after, at the instant to + At 2 (FIG. 9)
- the segment 17, now noted 17 ' is interrupted and it is observed that the decrease of the simultaneous arcs 14 and 15 is then much faster, according to the following segment 18, so that their extinction arrives at the instant 3 ⁇ 4 + ⁇ 3, where ⁇ 3 is less than ⁇ .
- the duration and average intensity of the arches, as well as the damage inflicted contacts, are then significantly reduced.
- the same advantages are present with the operating variants indicated above, as well as with unitary fixed contacts, such as the conventional fixed contacts 3 and 4.
Landscapes
- Arc-Extinguishing Devices That Are Switches (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US15/522,427 US10056209B2 (en) | 2014-10-30 | 2015-10-28 | Medium- or high-voltage circuit breaker or isolator, provided with improved fixed contacts, and method of use |
JP2017522611A JP6786483B2 (ja) | 2014-10-30 | 2015-10-28 | 改良型固定接触子を備えた中間又は高電圧回路遮断器又は断路器及びその使用方法 |
EP15787189.8A EP3213335B1 (fr) | 2014-10-30 | 2015-10-28 | Interrupteur ou disjoncteur à moyenne ou haute tension, pourvu de contacts fixes ameliorés, et procédé d'utilisation |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1460427A FR3028089B1 (fr) | 2014-10-30 | 2014-10-30 | Interrupteur ou disjoncteur a moyenne ou haute tension, pourvu de contacts fixes ameliores, et procede d'utilisation |
FR1460427 | 2014-10-30 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2016066682A1 true WO2016066682A1 (fr) | 2016-05-06 |
Family
ID=52477838
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2015/074976 WO2016066682A1 (fr) | 2014-10-30 | 2015-10-28 | Interrupteur ou disjoncteur a moyenne ou haute tension, pourvu de contacts fixes ameliores, et procede d'utilisation |
Country Status (5)
Country | Link |
---|---|
US (1) | US10056209B2 (fr) |
EP (1) | EP3213335B1 (fr) |
JP (1) | JP6786483B2 (fr) |
FR (1) | FR3028089B1 (fr) |
WO (1) | WO2016066682A1 (fr) |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1955490U (de) * | 1966-12-16 | 1967-02-16 | Continental Elektro Ind Ag | Elektrischer last- bzw. leistungsschalter. |
US4329552A (en) * | 1980-04-23 | 1982-05-11 | Gould Inc. | Wire formed interleaved spring contact structure |
US6100489A (en) * | 1998-04-14 | 2000-08-08 | Asea Brown Boveri Ag | Consumable switching arrangement |
FR2985080A1 (fr) * | 2011-12-21 | 2013-06-28 | Alstom Technology Ltd | Ensemble de connexion electrique |
FR3001575A1 (fr) * | 2013-01-29 | 2014-08-01 | Alstom Technology Ltd | Disjoncteur pourvu de moyens reduisant l'arc de commutation entre contacts permanents |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5939825U (ja) * | 1982-09-08 | 1984-03-14 | 株式会社東芝 | 開閉装置 |
FR2596578B1 (fr) * | 1986-03-28 | 1994-05-06 | Merlin Et Gerin | Disjoncteur electrique a autoexpansion et a arc tournant |
DE59009511D1 (de) * | 1990-03-28 | 1995-09-14 | Siemens Ag | Schnellschalter. |
DE19517615A1 (de) * | 1995-05-13 | 1996-11-14 | Abb Research Ltd | Leistungsschalter |
JP4174094B2 (ja) * | 1998-01-29 | 2008-10-29 | 株式会社東芝 | ガス遮断器 |
US6448519B1 (en) * | 2000-03-20 | 2002-09-10 | General Electric Company | Contact system arrangement for plug-in circuit breakers and base |
KR100351300B1 (ko) * | 2000-09-27 | 2002-09-05 | 엘지산전 주식회사 | 회로차단기용 복합소호장치 |
US8319136B2 (en) * | 2010-06-29 | 2012-11-27 | Schneider Electric USA, Inc. | Arcing fault and arc flash protection system having a high-speed switch |
JP5389279B2 (ja) * | 2011-01-07 | 2014-01-15 | 三菱電機株式会社 | 開閉装置 |
EP2823499B1 (fr) * | 2012-03-06 | 2017-06-14 | ABB Schweiz AG | Disjoncteur a arc-saut et procede de coupure |
FR2999331B1 (fr) | 2012-12-12 | 2019-05-31 | Alstom Technology Ltd | Appareillage de coupure de courant ameliore |
DE102013223632A1 (de) * | 2013-11-20 | 2015-05-21 | Siemens Aktiengesellschaft | Schaltanordnung sowie Verfahren zur Montage einer Schaltanordnung |
-
2014
- 2014-10-30 FR FR1460427A patent/FR3028089B1/fr active Active
-
2015
- 2015-10-28 US US15/522,427 patent/US10056209B2/en active Active
- 2015-10-28 WO PCT/EP2015/074976 patent/WO2016066682A1/fr active Application Filing
- 2015-10-28 JP JP2017522611A patent/JP6786483B2/ja active Active
- 2015-10-28 EP EP15787189.8A patent/EP3213335B1/fr active Active
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1955490U (de) * | 1966-12-16 | 1967-02-16 | Continental Elektro Ind Ag | Elektrischer last- bzw. leistungsschalter. |
US4329552A (en) * | 1980-04-23 | 1982-05-11 | Gould Inc. | Wire formed interleaved spring contact structure |
US6100489A (en) * | 1998-04-14 | 2000-08-08 | Asea Brown Boveri Ag | Consumable switching arrangement |
FR2985080A1 (fr) * | 2011-12-21 | 2013-06-28 | Alstom Technology Ltd | Ensemble de connexion electrique |
FR3001575A1 (fr) * | 2013-01-29 | 2014-08-01 | Alstom Technology Ltd | Disjoncteur pourvu de moyens reduisant l'arc de commutation entre contacts permanents |
Also Published As
Publication number | Publication date |
---|---|
EP3213335A1 (fr) | 2017-09-06 |
US10056209B2 (en) | 2018-08-21 |
FR3028089A1 (fr) | 2016-05-06 |
FR3028089B1 (fr) | 2016-12-30 |
EP3213335B1 (fr) | 2021-06-16 |
JP2017539049A (ja) | 2017-12-28 |
US20170316904A1 (en) | 2017-11-02 |
JP6786483B2 (ja) | 2020-11-18 |
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