EP0240406B1 - Elektrischer autopneumatischer Druckgasschalter mit hoher dielektrischer Festigkeit - Google Patents

Elektrischer autopneumatischer Druckgasschalter mit hoher dielektrischer Festigkeit Download PDF

Info

Publication number
EP0240406B1
EP0240406B1 EP87400634A EP87400634A EP0240406B1 EP 0240406 B1 EP0240406 B1 EP 0240406B1 EP 87400634 A EP87400634 A EP 87400634A EP 87400634 A EP87400634 A EP 87400634A EP 0240406 B1 EP0240406 B1 EP 0240406B1
Authority
EP
European Patent Office
Prior art keywords
circuit
main
contact
contacts
casing
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
Application number
EP87400634A
Other languages
English (en)
French (fr)
Other versions
EP0240406A1 (de
Inventor
Raymond Soboul
Gérard Menou
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Merlin Gerin SA
Original Assignee
Merlin Gerin SA
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Merlin Gerin SA filed Critical Merlin Gerin SA
Publication of EP0240406A1 publication Critical patent/EP0240406A1/de
Application granted granted Critical
Publication of EP0240406B1 publication Critical patent/EP0240406B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • H01H33/70—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid
    • H01H33/88—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being produced or increased by movement of pistons or other pressure-producing parts
    • H01H33/90—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being produced or increased by movement of pistons or other pressure-producing parts this movement being effected by or in conjunction with the contact-operating mechanism
    • H01H33/91—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being produced or increased by movement of pistons or other pressure-producing parts this movement being effected by or in conjunction with the contact-operating mechanism the arc-extinguishing fluid being air or gas
    • 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
    • H01H33/24—Means for preventing discharge to non-current-carrying parts, e.g. using corona ring
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/02—Details
    • H01H33/04—Means for extinguishing or preventing arc between current-carrying parts
    • H01H33/12—Auxiliary contacts on to which the arc is transferred from the main contacts

Definitions

  • a known circuit breaker of the kind mentioned is described in French patents FR-A-2,441,916 and European patent EP-A-0,011,542 of the applicant.
  • the insulating casing of the circuit breaker is elongated and is subdivided by a horizontal internal wall into two compartments superposed along the longitudinal axis.
  • the separation zone of the main contacts is arranged in the lower compartment, while the cut-off interval between arcing contacts is in the upper compartment.
  • Note in the middle zone of the enclosure that the connection system of the fixed main contact is at the potential of the upper terminal, while the movable arcing contact juxtaposed laterally is brought to the potential of the lower terminal.
  • the difference in potential generates a large electric field in this zone, capable of affecting the electrical insulation of the circuit breaker as a function of the value of the nominal voltage used.
  • the longitudinal offset of the separation zones of the main circuit and the arc circuit limits the performance and the dielectric strength of such a circuit breaker.
  • the rotary arc circuit breaker described in document EP-A-0.053.524 comprises shunt contacts arranged transversely between main contacts of the main circuit, and arcing contacts of the auxiliary circuit. In the closed position of the circuit breaker, the arcing contacts are permanently separated by an isolation interval to prevent any energization of the coil.
  • the movable shunt contact is located substantially opposite the upper arcing contact connected to the upper terminal of opposite polarity.
  • the fixed main contact is located at the lower arcing contact of opposite polarity. The presence of this potential difference creates in this zone a large electric field which risks disturbing the electrical insulation inside the enclosure for a nominal voltage equal to or greater than 36kV.
  • the circuit breaker described in document US-A-3,257,532 comprises a first circuit of main contacts, and a second circuit of arcing contacts.
  • the two circuits are arranged coaxially with respect to each other by being connected in parallel in paths of the same length between the connection terminals. This circuit breaker requires additional sliding contacts.
  • the object of the invention is to improve the dielectric strength of a self-blowing circuit breaker having a side-by-side arrangement of the main circuit and the arcing circuit inside the enclosure.
  • Such a distribution of the active parts inside the envelope improves the dielectric strength of the circuit breaker, since the contacts arranged opposite one another in the transverse direction have the same polarities.
  • the circuit breaker is equipped with a self-blowing device having a piston cylinder compression assembly of the insulating gas, and a blowing nozzle coaxially surrounding the cut-off interval to ensure the extinction of the arc when opening the auxiliary circuit.
  • the cylinder of the self-blowing device constitutes said screen isolation between the respective contacts of the main circuit and the auxiliary circuit, the assembly being arranged in a first compartment of the envelope, separated from the adjacent second compartment by a fixed intermediate wall serving as support for said cylinder.
  • a pole of an electric circuit breaker 10 with self-blowing is housed in a sealed envelope 12 made of molded insulating material, filled with an electronegative insulating gas with high dielectric strength, in particular sulfur hexafluoride.
  • the casing 12 of elongated shape, made of epoxy resin, contains a main circuit 14 for passing the nominal current having a pair of main contacts 16, 18, one of which is movable, and an auxiliary circuit 20 for shunting the main circuit 14 having a pair of arcing contacts 22, 24, one of which is movable 24.
  • a pair of bushings 26, 28, offset from each other in the longitudinal direction, pass radially through the wall of the casing 12 to constitute an input terminal 30 and an output terminal 32 of the circuit breaker 10 pole.
  • the side wall of the insulating casing 12 comprises a pair of studs 34, 36, for fixing intended to mechanically secure the circuit breaker 10 to a metal support electrically connected to ground.
  • the studs 34, 36 are produced by molding with the insulating casing 12, of so as to project from the side wall situated opposite the bushings 26, 28.
  • the opposite open bottoms 38, 40 of the casing 12 are closed respectively by means of a lower cover 42 and an upper cover 44.
  • a molecular sieve 46 is housed inside the casing 12 in a cavity of the lower cover 42.
  • An external control mechanism (not shown) is mechanically coupled to a crank 48 wedged on a rotary shaft 50 passing through an orifice of the casing 12 with the interposition of a dynamic sealing system 52. Inside the casing 12, the shaft 50 is articulated to an insulating transmission rod 54 intended to drive the moving element of the pole of the circuit breaker 10. The passage opening of the rotary shaft 50 is disposed between the fixing stud 34 and the bottom 38 of the casing 12.
  • the movable main contact 18 of the main circuit 14 is pivotally mounted on a pin 56 carried by a first connection bar 58 connected to the lower bushing 26.
  • a kinematic linkage 60 with intermediate lever 61 mechanically connects the movable main contact 18 to a rod 62 for movable control in translation, having one end articulated to the insulating rod 54, and an opposite end carrying the movable arcing contact 24.
  • the rod 62 is conductive and is electrically connected to the lower bushing 26 by a flexible connecting conductor 64.
  • the kinematic connection 60 transforms the rectilinear movement of the rod 62 into a pivoting movement of the movable main contact 18, the assembly being arranged to cause the separation of the main contacts 16, 18, before that of the arcing contacts 22, 24.
  • the pivoting movement of the movable main contact 18 is thus derived from the sliding movement of the rod 62 for controlling the movable arcing contact 24.
  • a self-blowing device 65 with piston 66 and cylinder 68 for compressing the gas is associated with the pair of arcing contacts 22, 24, and is actuated during the displacement of the control rod 62 to generate a pneumatic blowing of the arc pulled during the separation of the arcing contacts 22, 24.
  • the movable piston 66 is secured to the rod 62 and carries a blowing nozzle 67 coaxially surrounding the arcing contacts 22, 24.
  • the fixed main contact 16 is connected by a second connection bar 70 to the upper bushing 28.
  • the fixed arcing contact is also connected to the upper bushing 28 by a link 72.
  • the main circuit 14 is arranged as a disconnector connected directly to the bushings 26, 28 by extending along a longitudinal trajectory directly adjacent and shorter than that of the auxiliary circuit 20 offset in the transverse direction.
  • the sectioning area 74 between the main fixed 16 and movable contacts 18 of the main circuit 14 is located in the upper compartment 76 of the casing 12, with respect to the cut-off interval 78 and the self-blowing device 65 of the auxiliary circuit 20.
  • the fixed main contact 16 is substantially at the same level as the adjacent fixed arcing contact 22, and the pivoting main contact 18 is separated laterally from the self-blowing device 16 by the insulating partition of the cylinder 68
  • the upper compartment 76 is delimited from the lower compartment 80 by an insulating intermediate wall 82 for supporting the cylinder 68.
  • the fixed wall 82 extends parallel to the covers 42, 44, and comprises a slot 84 for passage of the sliding rod 62.
  • the cylinder 68 is positioned in the upper compartment 76, and its end 86 can be extended upwards, beyond the level of the fixed contacts 16, 22, so as to form an insulating screen fixed extending in the vicinity of the median plane between the cutoff interval 78 and the sectioning area 74.
  • the fixed main contact 16 and the fixed arcing contact 22 are at the potential of the upper terminal 32 and constitute two active parts of the same polarities, arranged opposite one another. It is the same for the movable main contact 18 and the movable arcing contact 24, both brought to the potential of the lower terminal 30.
  • This distribution of the active parts inside the upper compartment 76 of the insulating casing 12 improves the dielectric strength of the circuit breaker, and prevents any internal ignition up to nominal voltages of the order of 40 kV.
  • the conductive rod 62 and the first connection bar 58 extend parallel in the lower compartment 80 on either side of the median plane, and are located at the potential of the lower terminal 30.

Landscapes

  • Circuit Breakers (AREA)
  • Arc-Extinguishing Devices That Are Switches (AREA)

Claims (4)

  1. Elektrischer Leistungsschalter mit Selbstblasung mit einem dichten Gehäuse (12) aus gegossenem Isoliermaterial, mit einem Isoliergas von hoher dielektrischer Festigkeit gefüllt, insbesondere mit Schwefelhexafluorid, und enthaltend:
    - ein Paar von Verbindungsklemmen (30, 32), die die Wand des Gehäuses (12) durchdringen,
    - einen Hauptstromkreis (14) zum Durchfliessen des Nennstromes mit einem festen Hauptkontakt (16), einem beweglichen Hauptkontakt (18) und einer Unterbrechungszone (74), die bei Oeffnen des Hauptstromkreises (14) zwischen den genannten Hauptkontakten (16, 18) vorgesehen ist,
    - ein Hilfs-Nebenschlusskreis (20) des Hauptstromkreises (14) für die Stromunterbrechung, mit einem festen Lichtbogenkontakt (22) und einem beweglichen Lichtbogenkontakt (24), die in demselben Gehäuse (12) und demselben Gas wie die Hauptkontakte (16, 18) angeordnet sind, wobei der genannte Hauptstromkreis (14) direkt mit den Verbindungsklemmen (30, 32) im Innern des Gehäuses (12) verbunden ist und sich gemäss einer angrenzenden senkrecht verschobenen Bahn erstreckt, die kürzer ist als die des Hilfs-Nebenschlusskreises (20),
    - und ein Steuermechanismus (48, 50, 54, 60) des Leistungsschalters, der dazu bestimmt ist, die Hauptkontakte (16, 18) vor Oeffnen des Lichtbogenkontakte (22, 24) zu trennen,
    dadurch gekennzeichnet,
    - dass die Unterbrechungszone (74) des Hauptstromkreises (14) seitlich zu dem Unterbrechungs-Zwischenraum (78) des angrenzenden Hilfskreises (20) angeordnet ist,
    - dass der feste Hauptkontakt (16) und der feste Lichtbogenkontakt (22) das gleiche Potential besitzen, insbesondere von einer (32) der Anschlussklemmen, und ungefähr auf einer ersten Höhe diesseits und jenseits der Längsachse des Gehäuses (12) angeordnet sind,
    - dass der bewegliche Hauptkontakt (18) und der bewegliche Lichtbogenkontakt (24) das Potential der anderen Verbindungsklemme (30) aufweisen und ungefähr auf einer zweiten Höhe angeordnet sind, die unterschiedlich von der ersten Höhe ist,
    - und dass ein Isolierschirm (68, 86) seitlich zwischen dem Unterbrechungs-Zwischenraum (78) und der Unterbrechungszone (74) eingefügt ist.
  2. Elektrischer Leistungsschalter gemäss Anspruch 1, mit einer Selbstblasvorrichtung (65) mit einer Kolben- (66) und Zylinder- (68) Einheit, zur Kompression des Isoliergases, und mit einer Blasdüse (67), die koachsial den Unterbrechungs-Zwischenraum (78) umgibt, um das Löschen des Lichtbogens bei Oeffnen des Hilfskreises (20) zu gewährleisten, dadurch gekennzeichnet, dass der Zylinder (68) der Selbstblasvorrichtung (65) den genannten Isolierschirm zwischen den jeweiligen Kontakten (16, 22,; 18, 24) des Hauptstromkreises und des Hilfskreises bildet, wobei das ganze in einem ersten Abteil (76) des Gehäuses (12) angeordnet ist, getrennt von dem angrenzenden zweiten Abteil (80) durch eine feste Zwischenwand (82), die dem genannten Zylinder (68) als Träger dient.
  3. Elektrischer Leistungsschalter gemäss Anspruch 2, in dem der bewegliche Hauptkontakt (18) des Hauptstromkreises (14) drehbar auf einer Achse (56) angeordnet ist, die von einer ersten Verbindungsstange (58) getragen wird, welche die Zwischenwand (82) durchquert und sich auf ihrer grössten Länge in dem zweiten Abteil (80) erstreckt und dabei mit der unteren Verbindungsklemme (30) verbunden ist, dadurch gekennzeichnet, dass die Drehachse (56) des beweglichen Hauptkontaktes (18) in dem ersten Abteil angeordnet ist, ausgerichtet mit einer zweiten Verbindungsstange (70) des festen Hauptkontaktes (16) mit der oberen Verbindungsklemme (32).
  4. Elektrischer Leistungsschalter gemäss Anspruch 3, in dem der bewegliche Hauptkontakt drehbar durch eine kinematische Verbindung (60) betätigt wird, die mit einer gleitenden, an einer Steuerstange befestigten Stange (62) gekuppelt ist, dadurch gekennzeichnet, dass die kinematische Verbindung (60) einen Uebertragungshebel (61) aufweist, der die Zwischenwand (82) des Gehäuses (12) gemäss einer gegenüber der Längsachse schrägen Richtung durchdringt.
EP87400634A 1986-04-03 1987-03-20 Elektrischer autopneumatischer Druckgasschalter mit hoher dielektrischer Festigkeit Expired - Lifetime EP0240406B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8605027A FR2596915B1 (fr) 1986-04-03 1986-04-03 Disjoncteur electrique a autosoufflage ayant une tenue dielectrique elevee
FR8605027 1986-04-03

Publications (2)

Publication Number Publication Date
EP0240406A1 EP0240406A1 (de) 1987-10-07
EP0240406B1 true EP0240406B1 (de) 1992-06-03

Family

ID=9334029

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87400634A Expired - Lifetime EP0240406B1 (de) 1986-04-03 1987-03-20 Elektrischer autopneumatischer Druckgasschalter mit hoher dielektrischer Festigkeit

Country Status (10)

Country Link
US (1) US4736079A (de)
EP (1) EP0240406B1 (de)
JP (1) JPS62237628A (de)
KR (1) KR950011296B1 (de)
CN (1) CN1014374B (de)
CA (1) CA1289606C (de)
DE (1) DE3779475D1 (de)
ES (1) ES2032841T3 (de)
FR (1) FR2596915B1 (de)
IN (1) IN169561B (de)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2650911B1 (fr) * 1989-08-09 1991-10-04 Alsthom Gec Disjoncteur a moyenne tension
US5258588A (en) * 1992-05-15 1993-11-02 Joslyn Corporation Puffer type switch high current electrical switch contact assembly
DE10317735B3 (de) * 2003-04-11 2004-11-18 Siemens Ag Erdungsschalter mit einem bewegbaren Kontaktstück
EP2523204B1 (de) * 2011-05-12 2019-09-04 ABB Schweiz AG Schaltungsanordnung und Verfahren zur Unterbrechung des Stromflusses in einem Gleichstrompfad
CN112038967B (zh) * 2020-08-25 2022-04-08 国核电力规划设计研究院有限公司 一种用电设备及其开关设备

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT236502B (de) * 1962-12-17 1964-10-26 Sprecher & Schuh Ag Druckgasschalter mit durch die Schaltbewegung erzeugter Löschmittelströmung
JPS50158883A (de) * 1974-06-13 1975-12-23
FR2441916A1 (fr) * 1978-11-14 1980-06-13 Merlin Gerin Disjoncteur electrique a autosoufflage equipe d'un dispositif a contacts principaux perfectionnes
JPS56152125A (en) * 1980-04-25 1981-11-25 Tokyo Shibaura Electric Co Breaker
FR2494493A1 (fr) * 1980-11-17 1982-05-21 Merlin Gerin Disjoncteur electrique a autosoufflage par rotation de l'arc

Also Published As

Publication number Publication date
ES2032841T3 (es) 1993-03-01
KR950011296B1 (ko) 1995-09-30
DE3779475D1 (de) 1992-07-09
FR2596915A1 (fr) 1987-10-09
JPS62237628A (ja) 1987-10-17
KR870010586A (ko) 1987-11-30
CN1014374B (zh) 1991-10-16
CN87102479A (zh) 1987-10-14
FR2596915B1 (fr) 1994-02-18
EP0240406A1 (de) 1987-10-07
IN169561B (de) 1991-11-09
CA1289606C (en) 1991-09-24
US4736079A (en) 1988-04-05

Similar Documents

Publication Publication Date Title
EP0433184B1 (de) Hybrid-Mittelspannungsschalter
EP0239460B1 (de) Elektrischer Schalter mit verbesserter dielektrischer Festigkeit
EP0542637B1 (de) Elektrischer Schalter mit zwei Vakuumschaltkapseln in Reihe
EP0847586B1 (de) Hybrid-hochspannungsschalter
FR2578093A1 (fr) Disjoncteur differentiel unipolaire et neutre
EP0011542B2 (de) Leistungsschalter mit getrennten Leistungs- und Parallelstrombahnen
EP0224051B1 (de) Schwefelhexafluoridposten zum Lastschalten
EP0240406B1 (de) Elektrischer autopneumatischer Druckgasschalter mit hoher dielektrischer Festigkeit
EP0693763B1 (de) Mittelspannung elektrischer Schalter
EP0589779A1 (de) Leitungsschutzschalter mit magnetischer Blasschleife
EP0068951B1 (de) Gasisolierte gekapselte Zelle für elektrische Mittelspannungsanlage
EP0737993A1 (de) Hochspannungs-Hybrid-Trennanordnung
CH650882A5 (fr) Cellule de distribution a haute tension pour poste de transformation.
EP0433183B1 (de) Dreipoliger gasisolierter Hochspannungsschalter
EP0689217A1 (de) Vakuum Röhre, insbesondere für Lastschalter oder elektrischer Mittelspannungsschalter und Schalter mit einer solchen Röhre
EP0505292B1 (de) Phasen- und Nulleiter-Leitungsschutzschalter mit reduziertem Platzbedarf
JPH0132667Y2 (de)
CA1256920A (fr) Disjoncteur a hexafluorure de soufre fonctionnant dans un environnement a tres basse temperature
EP0649156B1 (de) Schutzeinrichtung dargestellt durch die Reihenschaltung eines Schutzschalters mit einem Schaltgerät
EP0580515B1 (de) Lastschalter mit zwei konzentrischen Löschkammern
EP0236641A1 (de) Trennschalter einer metallgekapselten Hochspannungsanlage
FR2595003A1 (fr) Appareillage electrique multipolaire a enveloppe commune et a isolement gazeux
FR2629944A1 (fr) Disjoncteur blinde a haute tension
JPS5913723Y2 (ja) ガス絶縁開閉装置用ガスしや断器
FR2875640A1 (fr) Dispositif de coupure et de fermeture de ligne electrique moyenne tension

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): BE CH DE ES GB IT LI SE

17P Request for examination filed

Effective date: 19880314

17Q First examination report despatched

Effective date: 19901214

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): BE CH DE ES GB IT LI SE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRE;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.SCRIBED TIME-LIMIT

Effective date: 19920603

Ref country code: SE

Effective date: 19920603

Ref country code: DE

Effective date: 19920603

Ref country code: GB

Effective date: 19920603

REF Corresponds to:

Ref document number: 3779475

Country of ref document: DE

Date of ref document: 19920709

GBV Gb: ep patent (uk) treated as always having been void in accordance with gb section 77(7)/1977 [no translation filed]
REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2032841

Country of ref document: ES

Kind code of ref document: T3

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Effective date: 19930331

Ref country code: BE

Effective date: 19930331

Ref country code: CH

Effective date: 19930331

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
BERE Be: lapsed

Owner name: MERLIN GERIN

Effective date: 19930331

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: ES

Payment date: 19990323

Year of fee payment: 13

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20000321

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20011010