DK142798B - Vacuum coupler with a number of switch units. - Google Patents

Vacuum coupler with a number of switch units. Download PDF

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Publication number
DK142798B
DK142798B DK580173AA DK580173A DK142798B DK 142798 B DK142798 B DK 142798B DK 580173A A DK580173A A DK 580173AA DK 580173 A DK580173 A DK 580173A DK 142798 B DK142798 B DK 142798B
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DK
Denmark
Prior art keywords
contact
switch
vacuum
units
unit
Prior art date
Application number
DK580173AA
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Danish (da)
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DK142798C (en
Inventor
Jan Christiaan Clason
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Hazemeijer Bv
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Publication of DK142798B publication Critical patent/DK142798B/en
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Publication of DK142798C publication Critical patent/DK142798C/da

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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
    • H01H33/664—Contacts; Arc-extinguishing means, e.g. arcing rings
    • 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
    • H01H33/022—Details particular to three-phase circuit breakers
    • H01H2033/024—Details particular to three-phase circuit breakers with a triangular setup of circuit breakers
    • 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
    • H01H2033/66269—Details relating to the materials used for 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
    • H01H33/666—Operating arrangements
    • H01H2033/6668—Operating arrangements with a plurality of interruptible circuit paths in single vacuum chamber
    • 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
    • H01H33/022—Details particular to three-phase circuit breakers
    • 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
    • H01H33/664—Contacts; Arc-extinguishing means, e.g. arcing rings
    • H01H33/6644—Contacts; Arc-extinguishing means, e.g. arcing rings having coil-like electrical connections between contact rod and the proper contact
    • H01H33/6645—Contacts; Arc-extinguishing means, e.g. arcing rings having coil-like electrical connections between contact rod and the proper contact in which the coil like electrical connections encircle at least once the contact rod

Landscapes

  • High-Tension Arc-Extinguishing Switches Without Spraying Means (AREA)
  • Arc-Extinguishing Devices That Are Switches (AREA)

Description

i 142793in 142793

Opfindelsen angår en vakuumkobler med to eller flere ens afbryderenheder i et evakueret hus, hvilke afbry-derenhederhver omfatter en fast kontakt og en bevægelig kontakt og hver er forsynet med en plasmaskærm, som blo-5 kerer adgangen til de andre afbryderenheder for den plasma, der frembringes ved afbrydelsesprocessen i en afbryderenhed.The invention relates to a vacuum coupler having two or more similar switch units in an evacuated housing, the switch units each comprising a fixed contact and a movable contact and each provided with a plasma screen which blocks access to the other switch units for the plasma which is generated by the interrupt process in a switch unit.

En kobler af denne type er beskrevet i en brochure "Joslin", D.B. 751-201, august 1971, jf. også USA-pa-10 patentskrift nr. 3 670 123. Den kendte kobler omfatter tre evakuerede rum, som hver for sig indeholder tre enfasede afbrydere. De sammenhørende afbrydere i de tre evakuerede rum er mekanisk sammenkoblede, og de udgør en trefaset afbryder, hvis tre kontakter er anbragt i 15 hvert sit vakuumrum. Derfor indeholder hvert vakuumrum tre afbryderenheder, der kan betjenes uafhængigt af hinanden. Hver afbryderenhed har en plasmaskærm af keramisk materiale, som tjener til at adskille de forskellige afbryderenheders plasmaer. Hvis to afbryderenheder nemlig 20 åbnes, og den tredje enhed er sluttet, og hvis den tredje afbryderenhed skulle åbnes uden nogen plasmaskærm, vil den tredje enheds plasma trænge ind mellem de åbne kontakter i de to andre afbryderenheder, hvorved der kunne optræde overslag i disse. Det er dette fænomen, 25 som forhindres med de keramiske plasmaskærme.A coupler of this type is described in a brochure "Joslin", D.B. 751-201, August 1971, cf. also U.S. Pat. No. 3,670,123. The known coupler comprises three evacuated spaces, each of which contains three single-phase switches. The interconnecting switches in the three evacuated rooms are mechanically interconnected and constitute a three-phase switch whose three switches are located in each of their vacuum rooms. Therefore, each vacuum room contains three switch units that can be operated independently of one another. Each switch unit has a ceramic plasma screen which serves to separate the plasmas of the various switch units. Namely, if two switch units are opened and the third unit is closed, and if the third switch unit is to be opened without any plasma screen, the third unit's plasma will penetrate between the open contacts of the other two switch units, which could cause overshoots. It is this phenomenon that is prevented by the ceramic plasma screens.

Ifølge den foreliggende opfindelse har man erkendt, at de keramiske plasmaskærme kan udelades, hvis de enfasede afbryderenheder forsynes med aksiale magnetfelter, som frembringes af de elektriske strømme, der gennemlø-30 ber afbryderenhederne.According to the present invention, it has been recognized that the ceramic plasma screens can be omitted if the single-phase switch units are provided with axial magnetic fields generated by the electrical currents passing through the switch units.

En kobler af den indledningsvis omhandlede art er ifølge opfindelsen ejendommelig ved, at hver plasmaskærm udgøres af en skruelinieformet vikling af elektrisk ledende materiale, som ved den ene, frie ende bærer den 35 pågældende afbryderenheds faste kontakt og ved den anden ende er fastgjort og forbundet med en tilslutningsstang, der er ført vakuumtæt ud af huset, og at den pågældende afbryderenheds bevægelige kontakt findes på en kontakt- 2 142798 stang, der i det mindste over en del af sin længde forløber koaksialt i den skruelinieforxnede vikling.According to the invention, a coupler of the kind initially provided is characterized in that each plasma screen is constituted by a helical winding of electrically conductive material, which at one free end carries the fixed contact of the relevant switch unit and at the other end is fixed and connected to a connection rod which is vacuum-tightly removed from the housing, and that the movable contact of the relevant switching device is found on a contact rod which extends coaxially at least part of its length in the helical winding.

Den skruelinieformede vikling sikrer som følge af den mekaniske afskærmningsvirkning og den magnetiske in-5 deslutning af plasmaen en god adskillelse mellem afbryderenheder, der er optaget i det samme vakuumrum, og da der således kan gives afkald på keramiske plasmaskærme, opnås der en enkel fremstilling af kobleren, der tilmed har bedre driftsegenskaber end kendte koblere og end-10 videre som følge af afskærmningens ringe pladsbehov kan udføres med mindre dimensioner end disse. Da hver afbryderenheds faste kontakt findes ved den frie og i nogen grad bevægelige ende af den som plasmaafskærmning tjenende skruelinieformede vikling, kan den sidstnævnte funge-15 re på lignende måde som en fjeder, således at der sikres et ensartet kontakttryk, og ved mekanisk kobling af flere afbryderenheder udlignes eventuelle tolerancer. Ved fjedringen optræder der desuden en vis drejning af kontaktstykket og dermed en rensning af kontaktfladerne.The helical winding, due to the mechanical shielding effect and the magnetic entrapment of the plasma, ensures a good separation between switch units taken in the same vacuum room, and as ceramic plasma screens can thus be dispensed, a simple preparation of the coupler, which even has better operating characteristics than known couplers and furthermore due to the small space requirement of the shielding can be made with smaller dimensions than these. Since the fixed contact of each switch unit is located at the free and somewhat movable end of the helical coil-shaped winding, the latter may act in a similar manner to a spring, thus ensuring uniform contact pressure and by mechanical coupling of multiple switching units offset any tolerances. At the suspension, there is also a certain rotation of the contact piece and thus a cleaning of the contact surfaces.

20 En yderligere vigtig fordel ved den nævnte indret ning er, at den generende indvirkning på den elektriske afbrydelseslysbue hidrørende fra det elektromagnetiske felt, som frembringes af de med kontakterne forbundne strømledere, og som uundgåeligt har en ugunstig fom i 25 de kendte konstruktioner, i vid udstrækning elimineres.A further important advantage of said device is that the annoying effect on the electric interrupt arc arising from the electromagnetic field produced by the contact conductors connected to the contacts and which inevitably has an unfavorable shape in the known constructions, extent is eliminated.

Det er kendt, at en afbrydelseslysbue slukkes lettere, hvis den kan begrænses til rummet mellem kontakterne.It is known that an interrupt arc is switched off more easily if it can be confined to the space between the contacts.

Med kobleren ifølge opfindelsen opnås dette ved forstærkning af det elektromagnetiske felt i rummet mel-30 lem kontakterne og ved dæmpning af den ugunstige påvirkning på det nævnte felt hidrørende fra de med kontakterne forbundne strømledere ved en koaksial anbringelse af de nævnte ledere.With the coupler according to the invention, this is achieved by amplifying the electromagnetic field in the space between the contacts and by damping the adverse effect on the said field resulting from the contact conductors connected to the contacts by a coaxial arrangement of said conductors.

Det er muligt at sammenkoble afbryderenhedeme me-35 kanisk med hinanden, således at vakuumafbryderen bliver en flerfaset afbryder.It is possible to interconnect the switching units mechanically with each other so that the vacuum switch becomes a multi-phase switch.

Det bemærkes, at frembringelsen af aksiale magnetfelter i enfasede vakuumafbrydere, i hvilke der er an- 142798 3 bragt et sæt kontakter i et vakuumrum, allerede er beskrevet i tysk fremlæggelsesskrift nr. 1 273 661. I dette apparat anvendes de aksiale felter imidlertid kun til at forbedre afbryderens afbrydelseskarakteristik. I det 5 tyske fremlæggelsesskrift er der intet angivet om, at aksiale magnetfelter også er nyttige til at omslutte plasmaen.It should be noted that the generation of axial magnetic fields in single-phase vacuum switches in which a set of contacts is provided in a vacuum space is already described in German Patent Specification No. 1,273,661. However, in this apparatus the axial fields are used only for to improve the interrupt characteristic of the switch. In the 5 German disclosure, there is no indication that axial magnetic fields are also useful for enclosing the plasma.

Det skal endelig bemærkes, at hollandsk patentskrift nr. 60 004 også beskriver en trefaset afbryder i vakuum.Finally, it is to be noted that Dutch patent specification 60,004 also discloses a three-phase switch in vacuum.

10 Den kendte afbryder er imidlertid en ledningsadskiller, der som bekendt ikke kan afbryde elektriske strømme af betydning, således at problemet med plasmaoverføring fra en afbryderenhed til en anden ikke opstår i denne afbry der.10 However, the known circuit breaker is a wire separator which, as is well known, cannot interrupt electrical currents of importance, so that the problem of plasma transfer from one circuit breaker to another does not arise in this circuit there.

15 Opfindelsen er i det følgende forklaret nærmere un der henvisning til tegningen, hvor fig. 1 viser en snit langs linien I-I i den i fig.The invention is explained in more detail below with reference to the drawing, in which 1 is a sectional view taken along the line I-I of FIG.

2 viste vakuumkobler med tre afbryderenheder ifølge opfindelsen, og 20 fig. 2 et snit langs linien II-II i fig. 1.2 with three switch units according to the invention, and FIG. 2 is a section along line II-II of FIG. First

Vakuumafbryderen omfatter et fælles evakueret hus 1, i hvilket der er anbragt tre afbryderenheder 2a, 2b og 2c. De tre afbryderenheder 2a, 2b og 2c er i åben forbindelse med det indre af det fælles evakuere-25 de hus 1 gennem skruelinieformede viklinger 11a, 11b og 11c. Hver afbryderenhed 2a, 2b og 2c omfatter et bevægeligt kontaktorgan 3a, 3b og 3c, som er anbragt på en kontaktstang 4a, 4b og 4c, der gennem en bælg 5a, 5b og 5c er forbundet vakuumtæt med en iso-30 lator 6a, 6b og 6c, som for sit vedkommende er koblet vakuumtæt med huset 1. Kontaktstangen 4a, 4b og 4c kan bevæges op og ned som vist ved pilene, og derved kan kontaktorganerne 3a, 3b og 3c bringes i indgreb med eller adskilles fra de tilhørende stationære kontaktor-35 ganer 7a, 7b og 7c, der er udformet som fremspring eller klodser på bunden af bægre 8a, 8b og 8c, der er anbragt med oversiden nedefter og er forsynet med forbindelsesstænger 9a, 9b og 9c, som er ført ud af hu-The vacuum switch comprises a common evacuated housing 1 in which three switch units 2a, 2b and 2c are arranged. The three switch units 2a, 2b and 2c are openly connected to the interior of the common evacuation housing 1 through helical windings 11a, 11b and 11c. Each switching unit 2a, 2b and 2c comprises a movable contact member 3a, 3b and 3c, which is arranged on a contact rod 4a, 4b and 4c, which is connected vacuum-tight with an insulator 6a, 6b through a bellows 5a, 5b and 5c and 6c, which in turn are vacuum-coupled to the housing 1. The contact rod 4a, 4b and 4c can be moved up and down as shown by the arrows, and thereby the contact means 3a, 3b and 3c can be engaged or separated from the associated stationary contactor. -35 threads 7a, 7b and 7c, formed as projections or bricks on the bottom of cups 8a, 8b, face down, and provided with connecting rods 9a, 9b and 9c extending out of the housing.

Claims (2)

142798 set 1 på vakuumtæt måde ved hjælp af isolatorer 10a, 10b og 10c. Hvert bæger 8a, 8b og 8c består delvis af en skrue linie formet vikling 11a, 11b og 11c, som leder strømgennemgangen i den tilhørende afbryderen-5 hed, således at der i hver afbryderenhed 2a, 2b og 2c frembringes et aksialt magnetfelt, som er orienteret parallelt med aksen for kontaktstængeme 4a, 4b og 4c. Det har vist sig, at der med denne vakuumafbryder både kan udføres enfasede og trefasede kobleprocesser, 10 uden at der kræves særlige keramiske skærme omkring de tre kontaktenheder. Fig. 2 viser endvidere aftagekontakteme 12 a og 12c, ved hjælp af hvilke strømmen i de bevægelige kontaktstænger 4a og 4c overføres til de stationære 15 forbindelsesstænger 13a og 13c. I fig. 2 er delene 2b~13b naturligvis ikke synlige.142798 seen 1 in a vacuum-tight manner by means of insulators 10a, 10b and 10c. Each beaker 8a, 8b and 8c consists in part of a screw line shaped winding 11a, 11b and 11c which guides the current flow in the associated switching unit, so that in each switching unit 2a, 2b and 2c an axial magnetic field is produced which is oriented parallel to the axis of the contact bars 4a, 4b and 4c. It has been found that with this vacuum switch both single-phase and three-phase switching processes can be performed, without the need for special ceramic screens around the three contact units. FIG. 2 further shows the take-off contacts 12a and 12c by which the current in the moving contact bars 4a and 4c is transmitted to the stationary 15 connecting rods 13a and 13c. In FIG. 2, parts 2b ~ 13b are obviously not visible. 1. Vakuumkobler med to eller flere ens afbryderen- heder (2a-2c) i et evakueret hus (1), hvilke afbryderenheder hver omfatter en fast kontakt (7a-7c) og en bevægelig kontakt (3a-3c) og hver er forsynet med en plasmaskærm, som blokerer adgangen til de andre afbryderenhe-25 der for den plasma, der frembringes ved afbrydelsesprocessen i en afbryderenhed, kendetegnet ved, at hver plasmaskærm udgøres af en skruelinieformet vikling (lla-llc) af elektrisk ledende materiale, som ved den ene, frie ende bærer den pågældende afbryderenheds 30 faste kontakt (7a-7c) og ved den anden ende er fastgjort og forbundet med en tilslutningsstang (9a-9c), der er ført vakuumtæt ud af huset (1), og at den pågældende afbryderenheds bevægelige kontakt (3a-3c) findes på en kontaktstang (4a-4c), der i det mindste over en del af 35 sin længde forløber koaksialt i den skruelinieformede vikling (lla-llc).1. Vacuum coupler having two or more equal switch units (2a-2c) in an evacuated housing (1), each switching unit comprising a fixed contact (7a-7c) and a movable contact (3a-3c) and each provided with a plasma screen which blocks access to the other switch units of the plasma produced by the switching process in a switch unit, characterized in that each plasma screen is constituted by a helical winding (11a-11c) of electrically conductive material which at one , free end carries the fixed contact (7a-7c) of the relevant switch unit 30 and is fixed at the other end and connected to a connection rod (9a-9c) which is vacuum-tightly removed from the housing (1) and that the switch of the respective switch unit contact (3a-3c) is provided on a contact rod (4a-4c) which extends coaxially at least over a portion of its length in the helical winding (11a-11c).
DK580173AA 1972-10-27 1973-10-26 Vacuum coupler with a number of switch units. DK142798B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL727214615A NL153713B (en) 1972-10-27 1972-10-27 VACUUM SWITCH WITH TWO OR MORE SWITCHING UNITS.
NL7214615 1972-10-27

Publications (2)

Publication Number Publication Date
DK142798B true DK142798B (en) 1981-01-26
DK142798C DK142798C (en) 1981-08-24

Family

ID=19817253

Family Applications (1)

Application Number Title Priority Date Filing Date
DK580173AA DK142798B (en) 1972-10-27 1973-10-26 Vacuum coupler with a number of switch units.

Country Status (15)

Country Link
US (1) US3870845A (en)
JP (1) JPS5336579B2 (en)
AT (1) AT337820B (en)
AU (1) AU467453B2 (en)
BE (1) BE806222A (en)
CA (1) CA998080A (en)
CH (1) CH558078A (en)
DK (1) DK142798B (en)
ES (1) ES419980A1 (en)
FR (1) FR2204867B1 (en)
GB (1) GB1433264A (en)
IT (1) IT996890B (en)
NL (1) NL153713B (en)
SE (1) SE386767B (en)
ZA (1) ZA738266B (en)

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NL154369B (en) * 1973-12-21 1977-08-15 Hazemeijer Bv ELECTRICAL HIGH VOLTAGE SWITCH WITH TWO SWITCHING RANKS CONNECTED IN SERIES.
US3969598A (en) * 1975-02-03 1976-07-13 General Electric Company Vacuum-type circuit interrupter with a plurality of sets of contacts in parallel
DE2932407C2 (en) * 1979-08-09 1982-05-27 Siemens AG, 1000 Berlin und 8000 München Low voltage contactor with three-phase contact set
JPS5857347U (en) * 1981-10-14 1983-04-18 日産自動車株式会社 Press molded product pushing device
DE3475243D1 (en) * 1984-05-18 1988-12-22 Sprecher Energie Ag Vacuum interrupter
JPS6136332U (en) * 1984-07-31 1986-03-06 日産自動車株式会社 Press molded product pushing device
GB2233498A (en) * 1989-06-21 1991-01-09 Gen Electric Co Plc Vacuum switch arc control
US5667060A (en) * 1995-12-26 1997-09-16 Amerace Corporation Diaphragm seal for a high voltage switch environment
US5808258A (en) * 1995-12-26 1998-09-15 Amerace Corporation Encapsulated high voltage vacuum switches
DE19701827A1 (en) * 1997-01-21 1998-07-23 Abb Patent Gmbh Generator switch of 50 kA rating
US6144005A (en) 1997-07-23 2000-11-07 Hitachi, Ltd. Vacuum switch and a vacuum switchgear using the same
US6156989A (en) * 1999-09-30 2000-12-05 Rockwell Technologies, Llc Multi-phase vacuum switch arrangement including an electromagnet actuating mechanism
DE102007003131A1 (en) * 2007-01-17 2008-07-24 Siemens Ag Circuit breaker and method for its manufacture

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US2906841A (en) * 1956-01-03 1959-09-29 Jennings Radio Mfg Corp Three-phase vacuum switch
GB1195026A (en) * 1966-10-11 1970-06-17 English Electric Co Ltd Improvements in or relating to Vacuum Circuit Interrupters.
DE1916401A1 (en) * 1968-11-29 1970-07-16 Inst Prueffeld Fuer Elek Sche High-performance vacuum arc extinguishing chamber
DE2036099C3 (en) * 1970-07-16 1974-08-08 Siemens Ag, 1000 Berlin Und 8000 Muenchen Vacuum circuit breaker
DE2242816A1 (en) * 1971-09-06 1973-03-15 Inst Prueffeld Elekt CONTACT ARRANGEMENT FOR VACUUM SWITCH

Also Published As

Publication number Publication date
US3870845A (en) 1975-03-11
ES419980A1 (en) 1976-03-16
DE2353141B2 (en) 1976-11-18
NL7214615A (en) 1974-05-01
GB1433264A (en) 1976-04-22
BE806222A (en) 1974-04-17
ZA738266B (en) 1974-08-28
AU6178173A (en) 1975-04-24
FR2204867A1 (en) 1974-05-24
NL153713B (en) 1977-06-15
ATA908973A (en) 1976-11-15
JPS5336579B2 (en) 1978-10-03
AU467453B2 (en) 1975-12-04
AT337820B (en) 1977-07-25
DE2353141A1 (en) 1974-05-02
JPS5052565A (en) 1975-05-10
CH558078A (en) 1975-01-15
SE386767B (en) 1976-08-16
CA998080A (en) 1976-10-05
FR2204867B1 (en) 1979-04-20
DK142798C (en) 1981-08-24
IT996890B (en) 1975-12-10

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