EP1384240B1 - Verfahren zum betreiben eines schaltgerätes mit einem zuschaltbaren strombegrenzer und zugehörige anordnung - Google Patents
Verfahren zum betreiben eines schaltgerätes mit einem zuschaltbaren strombegrenzer und zugehörige anordnung Download PDFInfo
- Publication number
- EP1384240B1 EP1384240B1 EP02761863A EP02761863A EP1384240B1 EP 1384240 B1 EP1384240 B1 EP 1384240B1 EP 02761863 A EP02761863 A EP 02761863A EP 02761863 A EP02761863 A EP 02761863A EP 1384240 B1 EP1384240 B1 EP 1384240B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- switching
- current
- limiter
- arrangement according
- arc
- 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 - Lifetime
Links
- 238000000034 method Methods 0.000 title claims description 12
- 238000010791 quenching Methods 0.000 claims description 15
- 230000000171 quenching effect Effects 0.000 claims description 15
- 230000000295 complement effect Effects 0.000 claims description 3
- 238000004891 communication Methods 0.000 claims description 2
- 238000002955 isolation Methods 0.000 claims 1
- 229920000642 polymer Polymers 0.000 claims 1
- 238000012216 screening Methods 0.000 claims 1
- 230000007704 transition Effects 0.000 claims 1
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- 239000000463 material Substances 0.000 description 3
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- 238000006073 displacement reaction Methods 0.000 description 2
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Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/30—Means for extinguishing or preventing arc between current-carrying parts
- H01H9/46—Means for extinguishing or preventing arc between current-carrying parts using arcing horns
- H01H9/465—Shunt circuit closed by transferring the arc onto an auxiliary electrode
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/30—Means for extinguishing or preventing arc between current-carrying parts
- H01H9/42—Impedances connected with contacts
-
- 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
- H01H1/14—Contacts characterised by the manner in which co-operating contacts engage by abutting
- H01H1/20—Bridging contacts
Definitions
- the invention relates to a method for operating a switching device with a switchable current limiter according to the preamble of claim 1.
- a switching device are in particular circuit breakers or contactors, possibly also semiconductor switches od. Like. Understood.
- the invention also relates to an arrangement for carrying out the method according to the preamble of claim 6.
- Switching devices protect electrical networks and consumers in the event of a short circuit by rapidly setting up a sufficiently high switching voltage, whereby the short-circuit current is limited and switched off after a short period of time.
- To increase the current limit can be increased by a series circuit of the switching device with a separate current limiter, a so-called. Limiter, the switching voltage used.
- the limiter is connected for this purpose in the main circuit, so that it is constantly traversed by the load current both in normal operation as in a short circuit.
- PTC limiters In addition to conventional mechanical switches, which generate switching arcs, PTC limiters are used for current limiting, in which case the voltage buildup is generated by an increase in the electrical resistance of the limiter material and / or by a gas discharge with high operating voltage.
- PTC limiters have the advantage over mechanical switches of a very fast build-up of the switching voltage.
- a disadvantage is the greater cold electrical resistance, which must be limited in rated operation, the rated current to an impermissible Avoid heating of the PTC material, eg by motor starting currents, and to prevent unintentional activation of the limiter.
- ABB PROLIM a circuit breaker as a switching device and a PTC limiter in the main circuit are electrically connected in series.
- a possible solution of the nominal current problem is in the EP 0 657 062 B1 described, in which a limiter a circuit breaker in a secondary flow path, which is only temporarily flows through current in case of switching, is switched on.
- the secondary flow path is formed from the arc guide rails and the quenching chamber and is turned on by the arc commutation of the switching contacts on the guide rails.
- an electrical switching device with Lichtbogenlöscheinuhgg and current limiting device in the secondary circuit known.
- the current limiting device is an electromechanical limiter whose contacts open dynamically by the current forces.
- the PTC resistor and the surge arrester are connected in parallel to the arc quenching device.
- the short-circuit current is split between the arc quenching device, the PTC resistor and the surge arrester.
- PTC limiters for current limitation are still out of the EP 0717 876 B1 known. This limiter is intended exclusively as a central limit in electrical distribution.
- circuit breaker designed as a circuit breaker are specified in the claims, which remindkommuttechniken the switching arc from the secondary flow path to the main flow path can be avoided or limited in their frequency.
- advantageous embodiments of the specially designed as a PTC limiter current limiter are given, which give a quick recovery of the limiter resistor.
- the invention is also applicable to other switching devices and current limiters.
- Figure 1 shows a schematic representation of the arrangement of a limiter in the secondary current path of a circuit breaker, as they are exemplified in the EP 0 657 062 B1 is shown.
- a current-limiting circuit breaker 20 includes at least two contacts 22 and 23, of which at least one is movable and can be opened and closed by a switching mechanism 24 which is triggered by a thermal and / or magnetic release 25 and 26 respectively.
- Each contact 22 and 23 is associated with an arc runner 27 and 27 ', which surround a prechamber region 28 and open into an extinguishing chamber 21 with a plurality of quenching plates 29 for the solution of an arc, not shown in Figure 1.
- After ignition of arc bases of the arc travels on the rails 27 and 27 'in a quenching chamber 17 with quenching plates 29, where a sufficient current limiting and arc extinction arc voltage is built up.
- a limiter 1 is connected upstream of the circuit breaker 20 in the secondary current path in FIG.
- the limiter 1 is a current-limiting element, which corresponds to the EP 0 657 062 B1 is not connected in the main current path, but with the supply line to an arc runner 27 forms a secondary current path in the switching device 20.
- the secondary current path for a commutation current I com is defined in FIG. 1 as a parallel current branch to a main current path for a switching current i. He then flows through current when the arc attaches by igniting a foot on this track.
- the limiter 1 according to FIG. 1 is advantageously designed as a PTC limiter.
- a PTC limiter 1 is shown schematically in FIG. It consists of two planar electrodes 10, between which a resistance body 5 of suitable material is clamped under the action of a force K.
- the resistance body 5 has surfaces 2 and 3 and the electrodes 10 have surfaces 11.
- the operation of such a PTC limiter for current limiting is in the EP 0 657 062 B1 explained in detail.
- the surface electrode 10 instead of a smooth surface 11 has a profiling 15, for example, has a rectangular structure with a web width b and a web height h.
- the web width b can be between 0.1 and 1 mm and the web height h also between 0.1 and 1 mm.
- web width b and web height h have the same order of magnitude, preferably between 0.3 and 0.6 mm.
- the resistance body 5 has on both surfaces 2 and 3 a complementary profiling 7. About the profiles 7 and 15, the resistance body 5 and the surface electrodes 10 are permanently connected to each other.
- the profilings 7 and 15 can also have an angle of inclination against the surface of the surface electrode.
- the formation of the profiling has an influence on the functioning of the PTC limiter 1.
- FIG. 4 shows a switching oscillogram of the PTC limiter 1 with profilings 15 on the electrodes 10 and complementary surface profile 7 of the PTC resistor body 5, as in detail in the EP 0 717 876 B1 is described.
- the time profile of the limiter resistor R for a short-circuit shutdown of the PTC limiter 1 is shown in the curve 17.
- the limiter resistance begins with the onset of the short-circuit current from its initial value R0 ⁇ 4 m ⁇ and increases slightly. After about 300 ⁇ s it reaches a first plateau value P of about 8 m ⁇ .
- the resistance curve goes into a steep rise at this time and remains at a resistance value substantially greater than 100 m ⁇ for approximately 300 ⁇ s.
- the limiter resistance drops back to a low-ohmic value of about 15 m ⁇ and then drops to its initial value.
- the reset resistance is about 2 to 4 times the cold resistance.
- the additional commutation voltage of eg 50 V with a resetting resistor of approx. 10 m ⁇ the forward current of the short circuit must therefore not exceed 5 kA. This means that the reset resistance of the PTC limiter 1 must therefore be designed with respect to the magnitude of the forward current and the maximum commutation voltage.
- FIG. 5 shows a circuit breaker 20 with a PTC limiter 1 in the secondary current path, as shown in a comparable manner in FIG.
- the essential difference is the symmetrical design of the switching part 30 of the circuit breaker 20, with a switching bridge 32 and a Doppelsch21, 28 or 21 ', 28' with respective guide rails 36,36 'and quenching plates 29, 29', and the connection of the limiter in this symmetrical switching chamber arrangement.
- the designations of the functional parts essentially correspond to FIG. 1.
- the limiter 1 is also current-charged only in the event of a switch due to the arrangement of the current limiter 1 in the secondary current path of the circuit breaker 20.
- As Maustrompfad is the switching chamber current path, which is turned on after opening the switching bridge 32 by arc commutation of the switching bridge 32 to the adjacent guide rails 29 and 29 '.
- the current limiter has its own housing 50 which is placed on the housing 30 of the circuit breaker 20 and includes an extension 52 for mechanical actuation of the switching mechanism 24.
- the circuit breaker 20 instead includes a rail bridge 39 for connecting the two guide rails 36, 36 '.
- the switching bridge 32 is shown in the figure 5 in the closed position by a solid line and in the open position with a dashed line. From one of the terminals 47, 47 ', the current path passes into the drive part 40 of the circuit breaker 20, which in turn, according to Figure 1, the switching mechanism 24, the overcurrent release 25 and the short-circuit release 26 includes. As a result, in the event of a short circuit, the short-circuit release 26 can open the switching bridge 32 of the circuit breaker 20 without delay.
- the connection of the limiter 1 takes place at a connection point of the two guide rails 36 and 36 ', which are assigned to the switching bridge 32 and which serve as arc running rails.
- the limiter 1 is only then flowed through current when the arc approach is commutated from the bridge contact to the adjacent guide rail in both switching chambers. Due to the required, simultaneous arc commutation, the additional voltage requirement is distributed by the voltage drop across the limiter 1 on both switching paths. This division effect facilitates the commutation of the main flow path to the secondary flow path even after a Bogengurkommuttechnik on the switching bridge.
- the double interruption causes a return displacement of the switching arc from the secondary flow path to the main flow path is only possible if this return displacement takes place in both switching chambers.
- an opening 38 or 38 ' is introduced into the guide rails 36, 36' assigned to the open position of the switching bridge 32, which is clear from the top view in FIG. 7 in detail.
- the switching bridge 32 in the open position of the quenching plates 29, 29' and the prechamber region 28, 28 'so shielded that bow reignitions are avoided at the switching bridge 32. This will ensure that the limiter function does not suspend in pre-chamber bow re-firing 28,28 '.
- Figure 6 shows the switching bridge in the open position, in which the distance between the bridge contacts 23, 23 'and fixed contacts 22, 22' is significantly greater than the distance of the guide rails 36, 36 'to the fixed contacts.
- the circuit breaker is designed as a single switching device with connection capability of a limiter.
- the connection point of the limiter is connected by a rail bridge.
- a mechanical extension 52 is provided for on-off operation of the circuit breaker if required.
- a high current version of the circuit breaker may be provided with a limiter integrated in the switch housing.
- a circuit breaker for the inventive combination of the switching device is suitable with a suitable current limiter.
- a contactor or a semiconductor switch is used as a switching device.
- arc-free switching but arc switching elements are required.
- the switching device and the current limiter can be further integrated advantageously systemic means.
- the current commutation can be improved by insulating media, such as movable slides, cover at the main flow path / contact point.
- insulating media such as movable slides
- the switching contacts can be realized with linear or else with rotary opening movement.
- a limiter with additional switching chamber / contact point or else a solid-state limiter can be used in addition or as a substitute for the current limiter described in detail.
- special quick releases for example piezo elements, can be used for low-power switching to the secondary flow path.
- an electronic triggering is possible.
Landscapes
- Arc-Extinguishing Devices That Are Switches (AREA)
- Silver Salt Photography Or Processing Solution Therefor (AREA)
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10118746 | 2001-04-17 | ||
DE10118746A DE10118746B4 (de) | 2001-04-17 | 2001-04-17 | Verfahren zum Betreiben eines Schaltgerätes mit einem zuschaltbaren Strombegrenzer und zugehörige Anordnung |
PCT/DE2002/001229 WO2002084688A1 (de) | 2001-04-17 | 2002-04-04 | Verfahren zum betreiben eines schaltgerätes mit einem zuschaltbaren strombegrenzer und zugehörige anordnung |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1384240A1 EP1384240A1 (de) | 2004-01-28 |
EP1384240B1 true EP1384240B1 (de) | 2007-08-08 |
Family
ID=7681693
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP02761863A Expired - Lifetime EP1384240B1 (de) | 2001-04-17 | 2002-04-04 | Verfahren zum betreiben eines schaltgerätes mit einem zuschaltbaren strombegrenzer und zugehörige anordnung |
Country Status (6)
Country | Link |
---|---|
US (1) | US7259944B2 (zh) |
EP (1) | EP1384240B1 (zh) |
JP (1) | JP4467887B2 (zh) |
CN (1) | CN1248253C (zh) |
DE (2) | DE10118746B4 (zh) |
WO (1) | WO2002084688A1 (zh) |
Families Citing this family (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ES2312947T3 (es) | 2004-07-08 | 2009-03-01 | Abb Schweiz Ag | Dispositivo de extincion de arco electrico para interruptores de proteccion. |
DE102004059097A1 (de) * | 2004-12-06 | 2006-06-08 | Siemens Ag | Schaltvorrichtung mit temperaturabhängigem Widerstand zum Löschen eines Lichtbogens |
FR2912253B1 (fr) * | 2007-02-01 | 2009-03-06 | Schneider Electric Ind Sas | Dispositif de protection contre les surtensions a contact mobile comprenant des moyens de deconnexions selectifs contre des courts-circuits |
JP2012059585A (ja) * | 2010-09-10 | 2012-03-22 | Fuji Electric Fa Components & Systems Co Ltd | 回路遮断器 |
CN102024633A (zh) * | 2010-12-03 | 2011-04-20 | 常熟开关制造有限公司(原常熟开关厂) | 低压断路器的引弧灭弧机构 |
CN102005349B (zh) * | 2010-12-09 | 2013-09-04 | 武汉长海电气科技开发有限公司 | 限流器 |
JP5967511B2 (ja) * | 2010-12-20 | 2016-08-10 | パナソニックIpマネジメント株式会社 | Led点灯装置及びそれを用いた照明器具 |
EP2555217B1 (de) * | 2011-08-02 | 2014-01-15 | Abb Ag | Strombegrenzungssystem |
US8836453B2 (en) * | 2011-10-07 | 2014-09-16 | Siemens Industry, Inc. | Electronic circuit breaker, electronic circuit breaker subassembly, circuit breaker secondary electrical contact assembly, and powering methods |
FR3042638B1 (fr) | 2015-10-16 | 2017-10-27 | Schneider Electric Ind Sas | Chambre de coupure d'un appareil de protection electrique et appareil de protection electrique comportant une telle chambre |
DE102016002134A1 (de) * | 2016-02-23 | 2017-08-24 | Liebherr-Mining Equipment Colmar Sas | Vorrichtung zur Rekuperation von hydraulischer Energie sowie Arbeitsmaschine mit entsprechender Vorrichtung |
US10614979B2 (en) | 2017-01-13 | 2020-04-07 | Abb Schweiz Ag | Arc chute with splitter plates interconnected by resistors |
CN108074765A (zh) * | 2018-01-17 | 2018-05-25 | 安徽中骄智能科技有限公司 | 一种基于联动闭合的电极板吸附式电触头灭弧装置 |
Family Cites Families (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3430016A (en) * | 1966-04-15 | 1969-02-25 | Gen Electric | Electric current interrupting device |
US3873791A (en) * | 1973-11-08 | 1975-03-25 | Gen Electric | Current limiting circuit breaker |
DE2439066C2 (de) | 1974-08-14 | 1982-06-03 | Brown, Boveri & Cie Ag, 6800 Mannheim | Einrichtung zur Begrenzung von Strömen |
DE2937490A1 (de) * | 1979-09-17 | 1981-04-02 | Siemens AG, 1000 Berlin und 8000 München | Strombegrenzer |
DE2939066C2 (de) * | 1979-09-27 | 1983-08-18 | Schaffhauser Strickmaschinenfabrik, Schaffhausen | Schloß für Flachstrickmaschine |
DE3021867A1 (de) * | 1980-06-11 | 1981-12-17 | Brown, Boveri & Cie Ag, 6800 Mannheim | Selbstschalter |
DE3824027A1 (de) * | 1988-07-15 | 1990-01-18 | Asea Brown Boveri | Elektrisches schaltgeraet |
DE4228297A1 (de) * | 1992-08-26 | 1994-03-03 | Siemens Ag | Veränderbarer Hochstromwiderstand, insbes. zur Anwendung als Schutzelement in der Leistungsschalttechnik, und Schaltung unter Verwendung des Hochstromwiderstandes |
DE4243314C2 (de) * | 1992-12-21 | 1998-08-20 | Asea Brown Boveri | Strombegrenzender Schalter |
DE4330607A1 (de) * | 1993-09-09 | 1995-03-16 | Siemens Ag | Limiter zur Strombegrenzung |
US5539370A (en) * | 1995-02-17 | 1996-07-23 | General Electric Company | Inductive motor protective circuit breaker |
FR2742916B1 (fr) * | 1995-12-21 | 1998-01-16 | Schneider Electric Sa | Dispositif electrique a commutation d'arc |
US6320129B1 (en) * | 1999-09-21 | 2001-11-20 | Industrial Technology Research Institute | Method for making electrode of polymer composite |
US6323751B1 (en) * | 1999-11-19 | 2001-11-27 | General Electric Company | Current limiter device with an electrically conductive composite material and method of manufacturing |
US20030020591A1 (en) * | 2000-04-08 | 2003-01-30 | Soo-An Choi | Electrical device having ptc conductive polymer |
US20030002778A1 (en) * | 2001-02-14 | 2003-01-02 | David Bach | Photo-polymer based fiber-optic switch using total internal reflection and micro-fluidic actuation |
EP1249720A1 (en) * | 2001-04-09 | 2002-10-16 | Alcatel | Bragg grating filter in optical waveguide |
-
2001
- 2001-04-17 DE DE10118746A patent/DE10118746B4/de not_active Expired - Fee Related
-
2002
- 2002-04-04 US US10/475,180 patent/US7259944B2/en not_active Expired - Fee Related
- 2002-04-04 DE DE50210638T patent/DE50210638D1/de not_active Expired - Lifetime
- 2002-04-04 CN CN02810226.6A patent/CN1248253C/zh not_active Expired - Fee Related
- 2002-04-04 EP EP02761863A patent/EP1384240B1/de not_active Expired - Lifetime
- 2002-04-04 JP JP2002581543A patent/JP4467887B2/ja not_active Expired - Lifetime
- 2002-04-04 WO PCT/DE2002/001229 patent/WO2002084688A1/de active IP Right Grant
Also Published As
Publication number | Publication date |
---|---|
US7259944B2 (en) | 2007-08-21 |
DE50210638D1 (de) | 2007-09-20 |
CN1509484A (zh) | 2004-06-30 |
JP2004529469A (ja) | 2004-09-24 |
DE10118746B4 (de) | 2004-06-24 |
JP4467887B2 (ja) | 2010-05-26 |
EP1384240A1 (de) | 2004-01-28 |
DE10118746A1 (de) | 2002-11-14 |
CN1248253C (zh) | 2006-03-29 |
WO2002084688A1 (de) | 2002-10-24 |
US20040150932A1 (en) | 2004-08-05 |
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