SE175730C1 - - Google Patents
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- Publication number
- SE175730C1 SE175730C1 SE641360A SE641360A SE175730C1 SE 175730 C1 SE175730 C1 SE 175730C1 SE 641360 A SE641360 A SE 641360A SE 641360 A SE641360 A SE 641360A SE 175730 C1 SE175730 C1 SE 175730C1
- Authority
- SE
- Sweden
- Prior art keywords
- contact
- loop
- arm
- electrodynamic system
- electrodynamic
- Prior art date
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H77/00—Protective overload circuit-breaking switches operated by excess current and requiring separate action for resetting
- H01H77/02—Protective overload circuit-breaking switches operated by excess current and requiring separate action for resetting in which the excess current itself provides the energy for opening the contacts, and having a separate reset mechanism
- H01H77/10—Protective overload circuit-breaking switches operated by excess current and requiring separate action for resetting in which the excess current itself provides the energy for opening the contacts, and having a separate reset mechanism with electrodynamic opening
- H01H77/102—Protective overload circuit-breaking switches operated by excess current and requiring separate action for resetting in which the excess current itself provides the energy for opening the contacts, and having a separate reset mechanism with electrodynamic opening characterised by special mounting of contact arm, allowing blow-off movement
- H01H77/105—Protective overload circuit-breaking switches operated by excess current and requiring separate action for resetting in which the excess current itself provides the energy for opening the contacts, and having a separate reset mechanism with electrodynamic opening characterised by special mounting of contact arm, allowing blow-off movement whereby the blow-off movement unlatches the contact from a contact holder
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Breakers (AREA)
Description
KLASS 21 c:68/01 INT. KLASS H 02 d PATENTTID FRAN DEN 1 JULI 1960 BEVILJAT DEN 20 APRIL 1961 PUBLICERAT DEN 20 JUNI 1961 Ans. 6413/1960 den 1/7 1960Hdr till tre ritningar VEB ELEKTRO-APPARATE-WERKE J W STALIN, BERL IN-TREPTOW, TYSKLAND Elektrodynamiskt system for piverkan av kopplingsorgan i en elektrisk brytare, sgrskitt en effektbrytare T.Ippfinnare: H Boxleidner Okningen av kortslutningseffekten i nyare flat minskar natens sakerhet, eftersom alla natdelar och anlaggningar utgattas for storre pakanningar. Darfor inforas numera effektbrytare, vilka bryta automatiskt vid Overstrom, for att skydda samlingsskenor, kablar och liknande for de termiska och dynamiska pakanningar •som kortslutningsstrornmen medlar. De hogsta fordringarna i dynamiskt avseende stallas pa. 'effektbrytarria i Vaxelstromsnat vid genomgangen av toppydrdena. Dessa pakanningar skulle kunna minskas i hog grad, om det lyekades att bryta kortslutningsstrommen redan innan den uppnadde sift forsta toppvarde. Detta fordrar vid vaxelstrorn av teknisk frekvens och med ett periodtal av exempel-vis Hz att effekthrytarna ha en bryttid 'som dr mindre an 5 millisekunder (ms). CLASS 21 c: 68/01 INT. CLASS H 02 d PATENT PERIOD FROM 1 JULY 1960 GRANTED ON 20 APRIL 1961 PUBLISHED 20 JUNE 1961 Ans. 6413/1960 on 1/7 1960Hdr to three drawings VEB ELEKTRO-APPARATE-WERKE JW STALIN, BERL IN-TREPTOW, GERMANY Electrodynamic system for the pivotal action of coupling means in an electrical switch, sgrskitt a circuit breaker T.Inventor: H Boxleutner newer flat reduces the safety of the night, as all night parts and facilities are drained for larger packages. Therefore, circuit breakers are now being introduced, which break automatically at Overstrom, to protect busbars, cables and the like for the thermal and dynamic packing gaps • that the short-circuit current mediates. The highest demands in dynamic terms are placed on. 'circuit breaker series in Vaxelstromsnat at the review of the peak peaks. These packings could be greatly reduced if it was possible to break the short-circuit current even before it reached the first peak value. In the case of alternating technical frequency and with a period number of, for example, Hz, this requires that the power generators have a switching time which is less than 5 milliseconds (ms).
For en extremt snabb brytning av elektriaka strommar 'kanner man redan en sprangbrytanordning, dar ett sprangamne inverkar pa brytrorelsen. Genom denna anordning Sr det mojligt att erna bryttider av 0,5 ms. De Oro emellertid endast lampade for en enfasig engangsbrytning, och for pit varandra folj an-de kopplings- eller brytfOrlopp erfordras en langre mellantid, eller ocksa ar det vid snabbt pa varandra fOliande forlopp nodvandigt med dyrbara och omfattand:e anordningar. For an extremely fast breaking of electric currents, a jump breaking device is already known, where a burst substance affects the breaking movement. By means of this device it is possible to have a breaking time of 0.5 ms. However, they are only suitable for a single-phase single-breaker, and for subsequent successive coupling or switching processes a longer intermediate time is required, or even in rapidly successive processes, expensive and extensive devices are required.
En elektrisk brytare for overstrommar Sr Oven kind, som har en av kortslutningsstrommen matad elektromagnet, genom vars tillslag vid eller fore uppnaendet av den elektrodynamiska lyftstromstyrkan kontaktsparrorgan paverkas, vilka sparra de rarliga kopplingsdelarna I lyftat lage for den slutgiltiga hry-t;-: stallningen for att hindra kopplingsdelama att ga tillbaka till inkopplingslaget. Har salunda kortslutningsstrommens kontakt. lyftande verkan, och gem= kortslutningsstrommen matade magneter forhindra att den upplyfta kontakten vid 110sf a nollgenomgartg av strommen fifer kommer till anliggning mot sin motkontakt. Det har nu visat sig, att vid kortslutningsstrdmmar, vilka annu lake rficka till for att paverka kontaktsparrorgan, kunna pa grund av det minskade kontakttrycket uppsta overhettning och deformering av kontaktstallen. Likasa kan kortslutningsstrommen ha en for kontaktlyftning tillracklig storlek men lyftvagen fortfarande vara sit liten, att sparrningen icke blir verksam. Hopsvetsningar av kontalt terna kunna dit knappast undvikas. An electric switch for overcurrents Sr Oven cheek, which has an electromagnet fed by the short-circuit current, by means of which the switch-on or before the attainment of the electrodynamic lifting current strength contactors are actuated, which lock the strange coupling parts I lifted low for the final shutter position. to prevent the coupling parts from returning to the coupling layer. Salunda has the short circuit current contact. lifting effect, and gem = short-circuit current supplied magnets prevent the raised contact at 110sf a zero throughput of the current fifer coming into abutment against its counter-contact. It has now been found that in the case of short-circuit currents, which are still sufficient to influence the contact locking means, overheating and deformation of the contact numbers can occur due to the reduced contact pressure. Likewise, the short-circuit current can have a size sufficient for contact lifting, but the lifting carriage can still be so small that the sparring does not become effective. Welding of the contracts can hardly be avoided there.
Man har aven redan forsokt att med hj alp av den dynamiSka repulsionen erna en sá snabb kontaktoppning, att redan innan hela kortslutningsstrommen kommer till verkan drages en ljusbage ut frau den kontakt, som halter p0. att oppna sig. Vid en for detta hadamal kand anordning Sr den dynamiska repulsionen mellan kontakterna och brytarens magnetiska snabbutlosningsanordning avpassade i forb.allande till varandra pa sadant satt, att omedelbart efter kontaktern.as lyftning sker vid en bestamd kortslutningsstromstyrka genom den magnetiska snabbutlosaren ett frigorande av en sparr for en pa en brythavarm verkande fjaderkraft eller liknande Bada f8rloppen maste ske mom en tid, vilken Sr mind-re an en halv period, for att verka strombegransande. Olagenheten med detta utfOrande bestar hi. a. dun, att anpassningen i tidsavseende mellan lyftkrafterna och den magnetiska snabbutlosningen Or besvarlig. Attempts have also already been made, with the aid of the dynamic repulsion, to open the contact so rapidly that even before the whole short-circuit current takes effect, a light bag is pulled out of the contact which is at p0. to open up. In a device known for this purpose, the dynamic repulsion between the contacts and the magnetic quick-release device of the switch is adapted in relation to each other in such a way that immediately after the contact is lifted at a certain short-circuit current through the magnetic quick-release a ratchet is released. a spring force acting on a breakwater or similar Bathing processes must take place for a period of time, which is less than half a period, in order to have a current-limiting effect. The irregularity with this execution consists hi. a. down, that the adaptation in time between the lifting forces and the magnetic rapid release Or responsive.
Ett annat utforande kinnetecknas av att avseende pa brytorganen principiellt likad'ant uppbyggda brytare aro forsedda med olika till den fasta kontaktdelen gaende ledare pa sadant salt, alt en genom kontakterna gaende strom utoyar antingen en. kontaktlyftande.eller en kontakttrycksokande verkan; Kontaktsystemet Or harvid utbildat pa &Want sfitt,-att: 27 — en snabbrytning astadkommes genom en fjader, sem gar farbi en dOdpunkt. Om harvid valjes en sadan ledaranordning, att denna verkar kontaktlyftande, minskas kontakttrycket vid Overstrain redan innan kontakttryeksfjadarn liar gatt over dadpunkten och astadkommit brrningen. Efter nagra brytningar av kortslutningar uppvisa kontaktstallena ofta deformeringar, vilka underlatta en slutlig hopsvetsning av kontakterna. Another embodiment is characterized in that, with respect to the switching means, in principle similarly constructed switches are provided with different conductors going to the fixed contact part on such salt, or a current passing through the contacts carries either one. contact lifting.or a contact pressure seeking effect; The contact system Or has thus been trained in & Want sfitt, -att: 27 - a quick break is achieved through a spring, which goes farbi a dead point. If such a conductor device is selected that it has a contact-lifting effect, the contact pressure at the Overstrain is reduced even before the contact pressure spring has passed over the dad point and effected the bore. After a few breaks of short circuits, the contact stalls often show deformations, which facilitate a final welding of the contacts.
Slutligen har aven foreslagits en antoinatisk Overstrombrytare, dar strambanan till den fasta kontakten, eller en del av denna strombana, utgares av en av tvá slinggrenar bestaende och at ett h.Jl utknackt harnalsformig ledarslinga, vars konvexa gren ar utford stel och vars konkava gran bestar av en knaled, som Or lagrad vid de fria andarna och vid atminstone ett av lagerstallena paverkas av en upplagrad kraft, varja.mte knaleden ar utbildad att -vid passerandet av dadlaget sla over till ett brytknaeklage och darvid sla bort den rorliga kontakten fran densammas fasta motkontakt. Vid en averstrambrytare enligt detta fOrslag Or det fordelaktigt att kontaktbrytningen icke sker genom den vanliga snabbutlosaren. Det erfordras emellertid en avsevard upplagrad kraft, soni forst di barjar att underst5dja knaledens brytrarelse, nar knaleden vid en overstram genom de dynamiska krafterna i ledarslingan forts frau inkopplingslaget och farbi dodlaget. Det utgor vidare en ola.- genhet, att knaleden vid utlasningen maste ga en Fang Vag och att massor maste accelereras. Dylika brytare ha Oven stora. langddimensioner. Finally, an antoinatic overcurrent circuit breaker has also been proposed, in which the fixed path to the fixed contact, or part of this current path, is made up of one of two loop branches and that a h.Jl knocked out harness-shaped conductor loop, whose convex branch is rigid and whose concave branch consists of a knuckle joint, which Or is stored at the free spirits and at at least one of the bearing positions is affected by a stored force, each knel joint is trained to - when passing the dead joint switch to a fracture knee joint and thereby remove the movable contact from its fixed counter-contact. In the case of an averting circuit breaker according to this proposal, it is advantageous that the contact breaking does not take place through the usual quick release. However, a considerable stored force is required, so that the bar joints first support the breaking movement of the knee joint, when the knee joint in an over-tension through the dynamic forces in the conductor loop continues from the connection layer and farbi the dead layer. It also constitutes an ola.- unit, that the knee joint at the unloading must give a Fang Vag and that lots must be accelerated. Such switches have Oven large. longitudinal dimensions.
TJppfinningen har till syfte all astadkomma en brytanordning, som salmar de kanda anordningarnas olagenheter. Densanuna skall kunna bryta stora averstrammar eller kortslutningsstrommar utan att vara dimensionerad for dylika brreffekter och harvid samtidigt fylla den Mom brrartekniken forefintliga fordran ph sma brytardimensioner. Harvid spelas en utslagsgivande roll av saval de olika detaljernas utbildning som aven av rumsuppdelningen, dvs. anordnandet och utbildandet av straniskenor, hallspaiTar, kontakter och liknande. The object of the invention is to provide a breaking device which eliminates the illegality of the known devices. Densanuna must be able to break large averstreams or short-circuit currents without being dimensioned for such letter effects and at the same time fulfill the existing requirement for small switching dimensions and small switch dimensions. In this case, a decisive role is played by the education of the various details as well as by the division of the room, ie. the arrangement and training of straniskenen, hallspaiTar, contacts and the like.
Uppfinningen bygger pa det forhallandet, att brytanordningar verka strombegransande, em kortslutningsstrommar bryta:s redan innan de uppn0 sina toppvarden. The invention is based on the premise that circuit breakers have a current-limiting effect, if short-circuit currents break even before they reach their peak values.
Uppfinningen bestar dari, att paverkan av kopplingsorgan far brytare, sarskilt effektbrytare med for- och huvudkontakt, sker genom ett elektrodynamiskt system, vilket be-star av tva. genom fasta och rorliga for- och huvudkontakter med varandra seriekopplade harnalsformiga ledarslingor med totalt tre med varandra parallellt gaende skanklar, dar vid Overstrain den elektrodynamiska kraft, som erhalles genom den fore den fastaoch huvudkontakten anordnade forsta slingan, akar kontakttrycket vid den fasta forkontakten eller vid den fasta for- och huvudkontak- ten, under det att den elektrodynamiska kraft, som erhalles genom den andra rslingan, vilken har en med den forsta slingan gemen- sam skankel (mittskankeln) med sarskild form.givning och vid sin an.de uppbarande den fasta huvudkontakten, astadkommer Oppnan- det av den rorliga huvudkontakten och darvid aven friger den sparranordning for en upplagrad kraft for att oppna den rorliga fOrkontakten. The invention consists in that the influence of coupling means on circuit breakers, in particular circuit breakers with front and main contact, takes place through an electrodynamic system, which consists of two. through fixed and movable front and main contacts with each other connected harness-shaped conductor loops with a total of three parallel shafts, where at Overstrain the electrodynamic force obtained by the first loop arranged in front of the fixed and main contact increases the contact pressure at the fixed front contact or at the the fixed front and main contacts, while the electrodynamic force obtained through the second loop, which has a shank common to the first loop (the middle shank) with a special shape and in its second bearing the fixed the main contact, achieves the opening of the movable main contact and thereby also releases the spar device for a stored force to open the movable pre-contact.
Vid brytare, sarskilt effektbrytare utan forkontakt, bestar kannetecknet darav, att det elektrodynamiska systemet utgiires av tva ge- nom en fast och en rdrlig kontakt seriekopplade, harnalsformiga ledarslingor med totalt tre med varandra parallellt gheride skanklar, dar vid overstrom den elektrodynamiska kraft, sorn erhalles genom den fore den fasta kontakten anordnade forsta slingan, akar kontakttrycket vid derma kontakt, under det att den elektrodynamiska kraft, som erhalles genom den andra slingan, vilken liar en med den forsta ,slingan gemensam skankel (mittskankeln) uppbarande den fasta kontakten och ledbart ansluten till en ledaxel i den forsta slingans toppunkt, friger en sprarranordning for en upplagrad kraft for att oppna den rorliga kontakten. In the case of circuit breakers, in particular circuit breakers without pre-contact, the characteristic sign is that the electrodynamic system is emitted by two series-connected, harness-shaped conductor loops through a fixed and a rotary contact with a total of three parallel gherid shanks, where the electrodynamic force is obtained. through the first loop arranged through the fixed contact, the contact pressure increases at this contact, while the electrodynamic force obtained through the second loop, which is a shank common to the first loop (the central shank) supporting the fixed contact and articulated to a hinge axis at the apex of the first loop, a locking device releases a stored force to open the movable contact.
Ytterligare kannetecken pa uppfinningen framga av beskrivningen av utforingsexempel och av patentanspraken. Den efterfoljande beskrivningen, som sker i samband med de bifogade ritningarna och avser utfiiringsexem- pel, tjanar till att forklara uppfinningen och mojligheterna att forverkliga densamma. NOgon begransning av uppfinningen Or joke av- sedd att ske genom detta. De i samband rued farklaringarna visade detaljerna, oavsett am desamma angivas i texten eller pa ritninrgsfigurerna, utgOra bestandsdelar av uppfinningen. Further features of the invention can be seen from the description of exemplary embodiments and from the patent claims. The following description, which takes place in connection with the accompanying drawings and relates to exemplary embodiments, serves to explain the invention and the possibilities of realizing it. NO limitation of the invention Or joke intended to be made through this. The details shown in connection with the explanations, regardless of whether they are stated in the text or in the drawing figures, constitute components of the invention.
Fig. 1 Or en enligt uppfinninuen utfOrd anordning vid en. effektbrytare med for- och hu.- vudkontakter och visar brytaren i tillslaget lage med sparrad manoverhavarm. — Fig. 2 Or en anordning enligt fig. 1, men i brytlage med manoverhavarmen frigjord frail sparrningen. — Fig. 3 visar den i fig. 2 angivna anordningen fardig far tillslag. — Fig. 4 och 5 visa tva utbildningsexempel av den mellersta slingskankeln. — Fig. 6 och 7 visa ytterligare utforingsexempel av en effektbrytare med foroch huvudkontakter, med brytaren i tillslaget lage och med sparrad manoverhavarm. Fig. 8 och 9 visa ytterligare tv'a utforingsexempel ph en effektbrytare med en fast och en rorlig kontakt, med brytaren i tillslaget lage och med sparrad mantiverhavarm. Fig. 1 Or a device according to the invention at a. circuit-breaker with front and main contacts and shows the switch in the on position with the sparring control lever. Fig. 2 Or a device according to Fig. 1, but in the breaking position with the control lever released from the sparring. Fig. 3 shows the device indicated in Fig. 2 ready for use. Figs. 4 and 5 show two training examples of the middle loop ankle. Figs. 6 and 7 show further embodiments of a circuit breaker with front and main contacts, with the switch in the on position and with a locked control arm. Figs. 8 and 9 show two further exemplary embodiments ph a circuit breaker with a fixed and a movable contact, with the switch in the on position and with a locked mantiver sea arm.
Ph ritningarna betecknar 1 en anslutningsdel av en harnalsformig ledarslinga, vars hogra skarikel 2 och vhnstra skankel 2' ga parallella med varandra och stoda mot varandra — —3 medelst exempelvis en isolethel 3. Skan:keln 2' har en sarskild utformning (som behandlas utfOrligare langre fram) och uppbar vid sin ande den fasta huvudkontakten 4. I denna slingas toppunkt ãr en kontakthavarm 6, vii-ken vid sin fria ande uppbar den fasta for, kontakten 7, fastsatt och ledbar onakring en axel 5, och genom en bojlig ban:dledare 8 ar den vidare forhunden med den till anSlutningsdelen 1 ghende skankeln 2. Med 9 betecknas en axel, omkring vilken en manoverhavarm 14 med en. rOrlig forkontakt 7', en kontakthavarm 6' med den. rorliga huvudkontakten 1' och en sparrhavarni 11 are anordnade. Den rorliga farkontakten iir forbunden med den rorliga huvudkontakten medelst en bajlig bandledare 12. Den fore de fasta kontakterna anordnade forsta ledarslingan besta saledes av den hagra ledarskankeln 2 och av den vanstra ledarskankeln 2' med. kontakthavarmen 6. Den andra ledarslingan bestir av den vanstra ledarskankeln 2' med kontakthavarmen 6 i den forsta slingan °eh av en parallellt harmed ghende kontakthavarmen 6'. Bada slingorna ha salunda som en. gemensam mittskankel den forsta slingans vanstra skankel 2' tillsammans med denesambarande kontakthavarmen 6, och desamma arc seriekopplade genom de fasta och rorliga fOr- och huvudkontakterna. Manaverhavarmen 10 drives fran en manoveraxel 13 via en isolerstang 14. Den. sistnamnda verkar iCke direkt ph manaverhavarmen utan genom en sparr, vilken kan besta av sparrhavarmen 11 med en. ansats 11' ()eh av en pa manoverhavarmen 10 anordn:ad till halften avfrast sparraxel 15. Medelst en fjader 16 drages em anslagsarm 17, vilken är anbragt pa. motsatt sida av sparraxeln mot fladern och har en. installningsskruv 18, i motursriktningen mot ett anslag 19. I stallet for derma sparr kart anyandas nagon annan typ med ringa fordrojningstid. The drawings show in 1 a connecting part of a harness-shaped conductor loop, the right particle 2 and the left shank 2 'are parallel to each other and stand against each other by means of, for example, an insulating part 3. The shank 2' has a special design (which is treated in more detail). further forward) and carried at its spirit the fixed main contact 4. In this the apex of the loop is a contact holder arm 6, which at its free spirit carried the fixed spring, the contact 7, fixed and articulated around a shaft 5, and through a flexible web : conductor 8 is the further front dog with the shank 2 leading to the connecting part 1. 9 denotes a shaft, around which an operating arm 14 with a. rOrlig front contact 7 ', a contact holder 6' with it. movable main contact 1 'and a ratchet harness 11 are provided. The movable vessel contact is connected to the movable main contact by means of a flexible band conductor 12. The first conductor loop arranged before the fixed contacts thus consists of the right conductor leg 2 and of the left conductor arm 2 '. the contact holder arm 6. The second conductor loop consists of the left conductor shank 2 'with the contact holder arm 6 in the first loop ° eh of a contact holder arm 6 running parallel to it. Both loops have salunda as one. common center ankle the first loop left ankle 2 'together with the same contacting arm arm 6, and the same arc connected in series through the fixed and movable front and main contacts. The maneuvering arm 10 is driven from a maneuvering shaft 13 via an insulating rod 14. It. the latter does not act directly on the control lever but through a ratchet, which can consist of the ratchet lever 11 with a. shoulder 11 '() eh of a spare shaft 15 arranged on the maneuvering arm 10: by means of a spare shaft 15 which is milled off. By means of a spring 16 a stop arm 17 is pulled, which is mounted on. opposite side of the spar shaft towards the flapper and has one. installation screw 18, in the counterclockwise direction against a stop 19. Instead of this, map any other type of spar with little delay time.
ManoVerhavarmen. kan ■saledes lean ur- kopplingsiaget endast foras till inkopplingslaget, mar ansatsen ph sparrhavarmen 11 kan stoda mot sparraxeln. Omvant kan manaverhavarmen dragas till sparrhavarmen medelst en dragfjader 20 och darigenom -over ga. till urkopplingslaget endast nar sparren genom vridning av sparraxeln i medursriktningen upphaver 'sparrningen. ManoVerhavarmen. Thus, the lean disengagement shaft can only be guided to the coupling layer, but the shoulder of the ratchet lever 11 can stand against the ratchet shaft. Conversely, the control lever can be pulled to the ratchet lever by means of a tension spring 20 and thereby -over ga. to the disengagement layer only when the ratchet by turning the ratchet shaft in the clockwise direction cancels the ratchet.
For att astadkomma ett minimitryck vid forkontakten verkar en tryckfiader 22 pa. den fasta fOrkontakten 7, varvid denna tryckfjader stoder mot en fast isolerdel 23 och ligger omkring en genom denna del ford artslagsbult 24, som sthr i forbindelse med den fasta forkontakten. Genom denna anslagsbult begransas forkontaktens svangrorelse. Vid inkopplingstillstandet forefinnes saled.es ett avsthnd a mellan anslagsbultens huvud calm isolerdelen, och detta avstand anger farkontaktens lyftvag. To achieve a minimum pressure at the pre-contact, a pressure fader 22 pa acts. the fixed front contact 7, this compression spring abutting against a fixed insulating part 23 and lying around a type impact bolt 24 through this part, which is connected in connection with the fixed front contact. This stop bolt limits the forward movement of the front contact. In the connection state, there is thus a distance between the head of the stop bolt and the insulating part, and this distance indicates the lifting contact of the vessel contact.
Huvudkontaktens kontakttryck erhalles -medelst en pa avre delen av kontakthavarmen. 6' anordnad och mot manoverhavarmens 10 baksida 10' stodande tryckfjader 25. Denna fjader ligger omkring en med huvudkontakt, havarmen forbundert och med sin. andra ande I manoverhavarmen:s baksida styrd anslagsbult 26. Vid inkopplingstillstandet forefinnes salunda mellan anslagsbultens huvud och manöv'erhävarmens baksida ett aystand h (lyftvagen)'. Eftersom forkontakterna slutas fore huvudkontakterna, ãr derma lyftvag rnindre an den fasta farkontaktens 7'. The contact pressure of the main contact is obtained - by means of one on the lower part of the contact sea heater. 6 'arranged and facing the rear 10' of the control arm 10 'compression spring 25. This spring lies around one with main contact, the sea arm connected and with its. second spirit A stop bolt 26 is controlled in the rear of the control lever. In the engagement state, there is thus an aystand h (lifting carriage) between the head of the stop bolt and the back of the control lever '. Since the front contacts are closed before the main contacts, this lifting car is lower than the fixed vessel contact 7 '.
Ndr anordningen kopplas in — slas till — (dvs, f8res fran den i fig. 3 visa& staliningen till den i fig. 1 visade),, gar en strain fran anslutningsdelen 1 och genom den forsta ledarslingans hogra skankel 2 frain till den punkt, dar den bajliga bandledaren 8 är fastsatt, och delar sig har i tva. delstrammar. Den forsta delstrommen gar vidare genom den forsta slingans vanstra skarikel 2', den fasta huvudkontakten 4, den rorliga huvudkontakten 4', kontakthavarmen 6', den bajliga bandledaren 21 och till anslutningsdelen 1'. Den andra delstrommen .gar vidare genom den rorliga bandledaren 8, kontakthavarmen 6, den fasta forkontakten 7, den. rorliga fOrkontakten 7', (let bajliga bandet 12 till kontakthavarmen 6' och farenar 'sig har med den forsta deIstrommen och gar till anslutningsdelen 1'. When the device is switched on - switched on - (ie, moved from the position shown in Fig. 3 to that shown in Fig. 1), a strain passes from the connecting part 1 and through the right shank 2 of the first conductor loop to the point where the flexible band guide 8 is attached, and is divided into two. substrams. The first substrum passes through the left loop 2 'of the first loop, the fixed main contact 4, the movable main contact 4', the contact holder arm 6 ', the flexible band guide 21 and to the connecting part 1'. The second substream passes through the movable belt conductor 8, the contact holder arm 6, the fixed front contact 7, the. movable pre-contact 7 ', (let the flexible band 12 to the contact holder arm 6' and farenar 'has itself with the first part drum and goes to the connection part 1'.
Om en kortslutningsstrom barjar att gá fram, sh hojes kontakttrycket vid forkontakterna 7' och 7 i beroende av stromstyrkan, eftersom forkontakthavarmen 6 ph grund av den pa. densamma verkande elektrodynamiska repulsionen farsoker att avvika i den med C betecknade riktnirrgen. I den andra slingan overvinnes genom den stigande strommen den motverkande kontakttryckfjadern 25. Kontakthavarmen 6' lyfter sin rorliga huvudkontakt frail den fasta huvudkontakten 4. Harigenom brytes den ftirsta delstrommens stromkrets. Den totala strommen gar nu under okning av kontakttrycket genom forkontakterna till dess alt manaverhavarmen 10 frigores fran sin spanning. Under tiden har kontakthavarmen 6' slagit mot installningsskruven 18 och vrider darefter sparraxeln 15 i medursriktningen och loser den manoverhavarmen 10 arreterande sparren, .sasom redan .sagts. If a short-circuit current starts to flow, the contact pressure at the pre-contacts 7 'and 7 is increased depending on the current, since the pre-contact sea heat is 6 ph due to the pa. the same acting electrodynamic repulsion tends to deviate in the direction denoted by C. In the second loop, the opposing contact compression spring 25 is overcome by the rising current. The contact holder arm 6 'lifts its movable main contact from the fixed main contact 4. This breaks the current circuit of the first sub-current. The total current now goes under increase of the contact pressure through the pre-contacts until the actuator lever 10 is released from its tension. Meanwhile, the contact holder arm 6 'has struck against the installation screw 18 and then turns the spar shaft 15 in the clockwise direction and loosens the control lever 10 locking the control lever 10, as already stated.
Manoverhavarmen 10 erhaller nu genom den pa forkontakthavarmen 6 utavade kraftpaverkningen en stor och i riktningen C verkande (salunda i urkopplingsriktningen verkande) acceleration, varfor efter tillryggalaggandet av lyftvagen a manoverhavarmen 10 forflyttas till utstallt lage med stor brytha:stighet. Denna farilyttning understodes genom dragfjadern 20, vilken slutgiltigt drar in maDaverhavarmen mot sparrhavarmen och ddrigenom till utstallt lage (se fig. 2). The control lever 10 now obtains a large acceleration and acting in the direction C (acting in the direction of disengagement) by the force applied to the pre-contact lever 6, so that after the lifting carriage has been moved, the control lever 10 is moved to an exposed bearing with high breaking strength. This danger movement is assisted by the tension spring 20, which finally pulls in the MaDaver arm against the ratchet arm and thereby to the exposed position (see Fig. 2).
I delta age forblir sparrhavarrnen. 11 sthende till dess att genom manoverhavarmens urkopplingsrorelse en med denna kopplad men 4— — icke visad utlOsningsanordning upphaver sparrningen for brytarens friutlosning och manoveraxeln 13 med isolerstangen 14 gar tillbaka vid urkopplingsforflyttningen. Vid slutet av denna rorelsefas liar sparrhavarmens 11 ansats 11' glidit av sparraxeln 15 och stoder sig nu mot sparraxeln. Anordningen ár nu fardig for en. ny inkoppling (se fig. 3). In delta age the sparrhavarrnen remains. 11 until, by means of the disengagement movement of the control lever, a release device connected to it but not shown, cancels the locking for the release of the switch and the control shaft 13 with the isolating rod 14 returns during the disengagement movement. At the end of this movement phase, the shoulder 11 'of the ratchet arm 11 slides off the ratchet shaft 15 and now stands against the ratchet shaft. The device is now ready for one. new connection (see fig. 3).
Kontakthavarmen 6 kan i enlighet med fig. 4 ha formen av en tvdarmad gaff el, som °Inger den forsta slingans vanstra skankel T, med gaffelarm.arnas andar ledbara omkring axeln 5, och med baksidan bildande den. fasta fOrkontakten 7. The contact holder arm 6 may, in accordance with Fig. 4, be in the form of a two-armed fork, which includes the left shank T of the first loop, with the spirits of the fork arms being articulated around the shaft 5, and with the rear forming it. fixed contacts 7.
Enligt fig. 5 kan emellertid aven den. fOrsta slingans vanstra skankel 2' vara utbildad som en tvharmad gal fel, som omger kontakthavarmen 6, och vars baksida bildar denna slingas topp, och vars gaffelarmsandar utgora fasta huvudkontakter. According to Fig. 5, however, it can also. the left shank 2 'of the first loop is formed as a two-armed gal fault, which surrounds the contact arm 6, and whose rear side forms the top of this loop, and whose fork arms form fixed head contacts.
De hada utforingsformerna ha olika elektrodynamiska verkningar. Vid utforandet enligt fig. 4 halles den vid forkontakterna 7 och 7' verksamma oliningen av kontakttrycket II-ten genom uppdelningen av den genom kontakthavarmen 6 gaende strommen i enskilda strommar. Kontakttrycket kan emellertid okas kraftigt enligt fig. 5, eftersom i detta fall endast den genom huvudkontakterna gaende strommen uppdelas. I detta fall intrader emellertid en minskning av den utlOsande kraftpaverkningen. The embodiments have different electrodynamic effects. In the embodiment according to Fig. 4, the oiling of the contact pressure II at the pre-contacts 7 and 7 'is kept by dividing the current passing through the contact arm 6 into individual currents. However, the contact pressure can be greatly increased according to Fig. 5, since in this case only the current passing through the main contacts is divided. In this case, however, a reduction in the triggering force effect occurs.
Ett ytterligare inflytande pa de mellan slingorna verkande krafterna kan erhallas genom uppdelning av kontakthavarmen 6' i flera strombanor (icke visat). Harigenom ãr det imajligt att minska de inoin slingorna verkande attraktionskrafterna och darigenom Oka de repellerande krafterna pd. kontakthavarmen 6'. An additional influence on the forces acting between the loops can be obtained by dividing the contact heater 6 'into several current paths (not shown). As a result, it is impossible to reduce the forces of attraction acting in the loops and thereby increase the repulsive forces pd. contact holder arm 6 '.
Ytterligare differentiering av dessa av varandra beroende kraftpaverkningar kan aven uppnis genom en motsvarande dimensionering av langderna och avstanden mellan slingornas enskilda skanklar och kontakthavarmarna. Further differentiation of these mutually dependent force effects can also be achieved by a corresponding dimensioning of the lengths and the distance between the individual shanks of the loops and the contact arms.
I fig. 6 visas en utniringform, vilken i huvudsak Overensstammer med fig. 1. I stallet for en isolerdel 3, som utgOr ett stod mellan den forsta slingans skanklar 2 och 2' ham har anordnats en i den h6gra skankeln 2 insatt isolerbussning 27. I denna bussning, som samtidigt tjdnar som st6d fOr skankeln 2', finrts en med den nyssnamnda skankeln farbunden och av en. tryckfjader 28 =given anslagsbult 29, som styres pa detta satt. Donna fjader verkar saledes mot den vanstra skankeln 2'. Den av den. sistnamnda fjadern utovade kraften är emellertid mindre an kraften frail tryekfjadern 25. Vidare är vid denna slingas topp vid den dar befintliga axeln 5 Even den vanstra skAnkeln i den f6rsta slingan anordnad svangbar tillsammans med huvudkontakten 4, och omkring axern 5 am Even kontakthavarmen 6 med den fasta forkontakten 7 lagrad. Bath skanklarna dro forenade med varandra och med kontakthavarmen medelst den. bojliga bandledaren 8. Alla ovriga konstruktions- och manoverorgan Aro likadana som fSrut. Vid inkopplingen trycker den pi .6vre delen av manoverhavarmen 10 fasta fOrkontakten 7' icke endast sin fasta motkontakt 7 tillbaka med strackan a och mot tryckfjaderns 22 inverkan, utan Oven den fasta kontakten 4 fOres tills am-mans med sin skankel 2' mot det av fjadern 28 utovade trycket tillbaka med strackan c. Den vanstra skankeln 2' kommer saledes varje fall att forst gâ mot isolerbussningen 27. Forst darefter tryckes tryckfj adorn. 25 ihop till det fOratbestamda utIosningsvardet. Fordelen med detta utforande Or, att vid en kortslutning kommer kontakttrycket mellan huvudkontakterna att uppratthallas i full utstrackning under den tid son]. ■skankeln 2 tillsammans med den fasta huvudkontakten gemensamt med kontakthavarmen 6' och den rorliga huvudkontakten forflytta sig i riktning mot sparranordningen. fluvudkontakterna gá isar forst ndr anslutningsbultens 29 lyftvag c är nail. Vid denim rorelsef as sker upphavandet av manoverhavarmens sparrning, och f orkontakten accelerar manoverhavarmens urkopplingsrorelse pa forut angivet sat. Fig. 6 shows an embodiment which substantially corresponds to Fig. 1. Instead of an insulating part 3, which forms a stand between the shanks 2 and 2 'of the first loop, an insulating bushing 27 inserted in the right shank 2 has been arranged. In this bushing, which at the same time serves as a support for the shank 2 ', one is connected to the aforesaid shank and by one. compression spring 28 = given stop bolt 29, which is controlled in this way. Donna feather thus acts against the left shank 2 '. That of it. the force exerted by the latter spring is, however, less than the force frail the pressure spring 25. Furthermore, at the top of this loop at the existing axis 5, the left leg in the first loop is arranged pivotable together with the main contact 4, and around the axis 5 am the contact holder arm 6 with the fixed front connector 7 stored. The bath legs were pulled together with each other and with the contact arm by means of it. flexible band guide 8. All other construction and operating means Aro the same as fSrut. During the connection, the upper part of the operating lever 10 pushes the fixed front contact 7 'not only its fixed counter contact 7 back with the distance a and against the action of the compression spring 22, but also the fixed contact 4 is moved until it is driven with its shank 2' against that of the spring 28 exerted the pressure back with the distance c. The left shank 2 'will thus in each case first go against the insulating bushing 27. Only then is the compression spring pressed. Together to the predetermined release value. The advantage of this embodiment is that in the event of a short circuit, the contact pressure between the main contacts will be maintained to the full extent for the time being]. ■ the shank 2 together with the fixed main contact together with the contact holder arm 6 'and the movable main contact move in the direction of the spar device. the fluid contacts are first connected to the connecting bolt 29 lifting lever c is the nail. In the case of denim movement, the actuation of the control lever's is released, and the front contact accelerates the disengagement movement of the control lever in the manner specified above.
Fig. 7 visar en modifikation av anordningen enligt fig. 6, varvid kontakthavarrnen 6' i den andra slingan Or ytterligare lagrad omkring en axel 30 pa manoverhavarmen 10 och i hojd med den rorliga huvudkontakten 4', varjamte armens 6 andra lagerstalle omkring axeln 9 dr utbildat som ett anslag 31, exempelvis i form av ett langstraekt hal oiler som ett liggande U. Anslagsbulten 26 liar vidare bortfallit och manoverhavarmens baksida 10' med tryckfjadern 25 Or anordnad vid nedre i stallet far vid ovre delen av manoverhavarmen 10. Tryckfjadern 25 stoder mot manOverhavarmens baksida och trycker kontakthavarmen 6' mot axeln 9. Den Onskade Overstromsutlosningen beror pa dimensioneringen av denim tryckfjader, som pa i ocli for sig kant satt kan vara installbar. Den rorliga kontakten 4' kan darfor i fraga om in- och urkopplingen anses som en fast kontakt, som emellertid vid den tillhorande kontakthavarmens 6' svdngningsrorelse omkring axeln 30 kan f6rflytta sig nagot och ddrigenom bli sj divrensande. Fig. 7 shows a modification of the device according to Fig. 6, wherein the contact racks 6 'in the second loop Or are further mounted around a shaft 30 on the operating lever 10 and at a height with the movable main contact 4', and the second bearing stall of the arm 6 around the shaft 9 dr formed as a stop 31, for example in the form of an elongated hal oiler as a horizontal U. The stop bolt 26 is further omitted and the rear side 10 'of the control lever with the compression spring 25 Or arranged at the lower part of the stable is at the upper part of the control lever 10. The compression spring 25 abuts manOverhavermen the back and presses the contact holder 6 'against the shaft 9. The desired Overcurrent release depends on the dimensioning of the denim compression spring, which can be installed on its own edge. The movable contact 4 'can therefore, in the case of the connection and disconnection, be regarded as a fixed contact, which, however, in the case of the pivoting movement of the associated contact holder 6' about the shaft 30 can move somewhat and thereby become self-cleaning.
Avon i fig. 8 bestir det elektrodynamiska systemet for piverkningen av kopplingsorganen av tva seriekopplade, harnalsformiga ledarslingor med tre parallellt med varandra gaende slingskanklar. I motsats till den i fig. 1 visade utforingsformen har har bortfallit sá-viii den forsta slingans vanstra skankel 2' med sin. fasta huvudkontakt som den riirliga huvudkontakten 4' pa den andra slingans kontakthavarm 6' och isolerdelen 3 mellan den — — farsta slingans skanklar 2 och 2'. Den fore den forsta kontakten 7 anordnade farsta ledarslingan bestar saledes av den hagra ledarskankeln 2 och den i sin toppunkt omkring axeln 5 svangbara kontaktha.varmen 6. Den andra ledarslingan bildas av den forsta slingans kontakthavarm 6 och av den andra slingans kontakthavarm 6'. For hada slingorna ar kontakthavarmen 6 en gemensani mittskankel, och de 'Ada slingorna aro vidare seriekopplade genom den fasta kontakten 7 och den rorliga kontakten 7'. Ovriga ingaende detaljer aro oforandrade. Strommen gar frau anslutningsdelen 1, den hogra skankeln 2, den bojliga bandledaren 8, kontakthavarmen 6, den fasta kontakten 7, den rorliga kontakten 7', den blijliga bandledaren 12, kontakthavarmen 6', den bojliga bandledaren 21 och till anslutningsdelen 1'. Vid kortslutning tryckes genom den dynarniska repulsionen i den fOrsta slingan kontakthavarmen 6 med sin fasta kontakt 7 i riktningen C mot den rorliga kontakten. 7', och den dynamiska repulsionen i den andra slingan trycker mot fiaderns 25 verkan kontakthavarmen 6' i riktning mot sparranordningen. Oppnandet av kontakterna sker forst da lyftvagen a vid anslagsbulten 24 är noll och nãr darefter den mot installningsskruven 18 till anliggning komna kontakthavarmen 6' utlost sparranordningen genom en vridning av 'sparraxeln 15 i medursriktningen. Avon in Fig. 8 consists of the electrodynamic system for the pivoting action of the coupling means of two series-connected, harness-shaped conductor loops with three parallel loop loops. In contrast to the embodiment shown in Fig. 1, the left shank 2 'of the first loop has disappeared with its. fixed main contact as the real main contact 4 'on the contact arm 6' of the second loop and the insulating part 3 between the shanks 2 and 2 'of the first loop. The first conductor loop arranged in front of the first contact 7 thus consists of the right conductor shank 2 and the contact heat 6 pivotable at its apex about the axis 5. The second conductor loop is formed by the contact arm 6 of the first loop and by the contact arm 6 'of the second loop. For the two loops, the contact holder arm 6 is a common central shank, and the 'two loops are further connected in series through the fixed contact 7 and the movable contact 7'. Other details are unchanged. The current goes from the connection part 1, the right shank 2, the flexible tape guide 8, the contact holder 6, the fixed contact 7, the movable contact 7 ', the lead tape guide 12, the contact holder arm 6', the flexible tape guide 21 and to the connection part 1 '. In the event of a short circuit, the contact holder arm 6 with its fixed contact 7 in the direction C towards the movable contact is pushed through the dynamic repulsion in the first loop. 7 ', and the dynamic repulsion in the second loop pushes against the action of the fader 25 the contact holder 6' in the direction of the spar device. The contacts are only opened when the lifting carriage a at the stop bolt 24 is zero and when the contact holder arm 6 'coming into contact with the installation screw 18 releases the spar device by turning the spar shaft 15 in the clockwise direction.
I fig. 9 visas en modifikation av den narmast foregaende utfOringsformen, dar, liksoin I fig. 7, den andra slingans kontakthavarm 6' är ytterligare lagrad omkring en pa owe delen av manoverhavarmen 10 befintlig axel 30, medan kontakthavarmens 6' andra lagerstalle omkring axeln 9 ãr uthildat som ett anslag, exempelvis i form air ett langstrackt hal 31 eller som ett liggande U. Vidare har anslagsbulten. 26 bortfallit, och mantiverhavarmens baksida 10' med tryekfjadern 25 ligger nu vid manoverhavarmens 10 nedre del i stallet for mid den Ovre delen. Fjadern 25 stoder mot manoverhavarmens baksida och trycker kontakthivarmen 6' mot axeln 9. Den onskade overstromsutiosningen beror pa dimensioneringen av denna tryckfjader, som pa i och for sig kant satt aven kan vara installbar. Fig. 9 shows a modification of the nearest preceding embodiment, in which, like in Fig. 7, the contact arm arm 6 'of the second loop is further mounted around an axis 30 present on the upper part of the control arm 10, while the second bearing stall of the contact arm 6' around the shaft 9 is extended as a stop, for example in the form of an elongated hall 31 or as a horizontal U. Furthermore, the stop bolt has. 26 has been omitted, and the rear side 10 'of the maneuvering arm with the pressure spring 25 now lies at the lower part of the maneuvering arm 10 in the stable in the middle of the upper part. The spring 25 abuts the rear of the control lever and presses the contact lever 6 'against the shaft 9. The desired overcurrent discharge depends on the dimensioning of this compression spring, which on its own edge can also be installed.
Amen yid de i fig. 6 och 7 visade utforingsformerna kan kontakthavarmen 6 ha formen av en tvaarmad gaffel, ,som omger den vanstra skankein 2' i den forsta 'slingan, varvid gaffelns baksida Sr utbildad som en fast forkontakt 7 och gaffelandarna leda omkring axeln 5 (se fig. 4). Det Sr emeleirtid aven mojligt att utbilda den forsta ,slingans vanstra skankel 2' i form ay en tvaarmad gaffel, som omger kontakthavarrnen 6 och vars rygg eller baksida ãr ledbart forbunden med axeln 5 i slingans toppunkt och mars gaffelandar utg5- ra fasta huvudkontakter 4 (se fig. 5). De hada utforingsformerna ha olika elektrodynamiska verkningar. Vid exempelvis det i fig. 4 visade utforandet kommer akningen av kontakttrycket mellan forkontakterna 7 och 7' att bli ringa pa grund ay uppdelningen av den genom kontakthavarmen 6 gaende strommen enskilda strommar. Kontakttrycket kan emellertid i enlighet med fig. 5 5kas, eftersom i detta fall endast den genom huvudkontakterria ,gaende strommen uppdelas i en:skilda strommar. liarvid erhMles emellertid en minskning ay den utlasande kraftpaverkningen. Det Sr vidare mid de i fig. 6-9 visade utforingsexemplen mojligt att genom uppdelning av kontakthavarmen 6' (i den andra slingan) i strOmbanor paverka de mellan slingorna verkande elektrodynamiska krafterna. Harigenom är det nrOjligt att minska de i slingorna verksanuna attraktionskrafterna och darigenom Oka de repellerande krafter ,som pLverka kontakthavacrmen 6'. In the embodiments shown in Figs. 6 and 7, the contact sea arm 6 may be in the form of a heated fork, which surrounds the left shank 2 'in the first loop, the back Sr of the fork being formed as a fixed front contact 7 and the fork lands leading around the shaft. 5 (see Fig. 4). It is also possible to form the first, left shank 2 'of the loop in the form of a heated fork, which surrounds the contact orifices 6 and whose back or back is articulated to the shaft 5 at the apex of the loop and the March forks form fixed main contacts 4 ( see Fig. 5). The embodiments have different electrodynamic effects. In the embodiment shown in Fig. 4, for example, the increase in the contact pressure between the pre-contacts 7 and 7 'will be small due to the division of the individual currents passing through the contact holder arm 6. However, in accordance with Fig. 5, the contact pressure can be increased, since in this case only the current passing through the main contact ring is divided into a separate stream. At the same time, however, there is a reduction in the emitting force. Furthermore, with the exemplary embodiments shown in Figs. 6-9, it is possible to influence the electrodynamic forces acting between the loops by dividing the contact arm 6 '(in the second loop) into current paths. As a result, it is possible to reduce the forces of attraction acting in the loops and thereby increase the repelling forces which act on the contact arm 6 '.
Ytterligare differentieringar air dessa av varandra beronde kraftpa'verkningar kunna ernas genom motsvarande dimensionering air langderna av och avstanden mellan de enskilda skanklarna i slingorna och kontakthavarmama. Further differentiations in these mutually dependent force effects can be achieved by corresponding dimensioning in the lengths of and the distance between the individual shanks in the loops and the contact holders.
Liksom mid fig. 1 Sr det Siren mid de Zvriga utforingsformerna mojligt att anordna en med manoverha.varmen kopplad utlosningsanordning, som upphaver sparrningen ay en mid effektbrytare vanlig friutlosning. As with Fig. 1, it is possible for the other embodiments to provide a release device coupled to the control heater, which cancels the release of a standard free release with a circuit breaker.
Claims (26)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE641360A SE175730C1 (en) | 1960-08-01 | 1960-08-01 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE641360A SE175730C1 (en) | 1960-08-01 | 1960-08-01 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SE175730C1 true SE175730C1 (en) | 1961-06-20 |
Family
ID=84545017
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SE641360A SE175730C1 (en) | 1960-08-01 | 1960-08-01 |
Country Status (1)
| Country | Link |
|---|---|
| SE (1) | SE175730C1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3107112A1 (en) * | 2015-06-16 | 2016-12-21 | General Electric Company | Contact system of a circuit breaker |
| US9552950B2 (en) | 2015-06-11 | 2017-01-24 | General Electric Company | Retaining assembly for a circuit breaker contact system |
-
1960
- 1960-08-01 SE SE641360A patent/SE175730C1/sv unknown
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9552950B2 (en) | 2015-06-11 | 2017-01-24 | General Electric Company | Retaining assembly for a circuit breaker contact system |
| EP3107112A1 (en) * | 2015-06-16 | 2016-12-21 | General Electric Company | Contact system of a circuit breaker |
| CN106257613A (en) * | 2015-06-16 | 2016-12-28 | 通用电气公司 | The contact system of circuit-breaker |
| US9576753B2 (en) | 2015-06-16 | 2017-02-21 | General Electric Company | Moveable contact arm releases latch plate engagement in a circuit breaker |
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