EP0148058A2 - Miniaturlastschalter mit dielektrischen Eigenschaften - Google Patents

Miniaturlastschalter mit dielektrischen Eigenschaften Download PDF

Info

Publication number
EP0148058A2
EP0148058A2 EP84402497A EP84402497A EP0148058A2 EP 0148058 A2 EP0148058 A2 EP 0148058A2 EP 84402497 A EP84402497 A EP 84402497A EP 84402497 A EP84402497 A EP 84402497A EP 0148058 A2 EP0148058 A2 EP 0148058A2
Authority
EP
European Patent Office
Prior art keywords
partition
circuit breaker
arc
chamber
housing
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.)
Granted
Application number
EP84402497A
Other languages
English (en)
French (fr)
Other versions
EP0148058A3 (en
EP0148058B1 (de
Inventor
Louis Boillot
Gilbert Mora
Jean-Pierre Roulet-Dubonnet
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=9295635&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0148058(A2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Merlin Gerin SA filed Critical Merlin Gerin SA
Priority to AT84402497T priority Critical patent/ATE41718T1/de
Publication of EP0148058A2 publication Critical patent/EP0148058A2/de
Publication of EP0148058A3 publication Critical patent/EP0148058A3/fr
Application granted granted Critical
Publication of EP0148058B1 publication Critical patent/EP0148058B1/de
Expired legal-status Critical Current

Links

Images

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/30—Means for extinguishing or preventing arc between current-carrying parts
    • H01H9/34—Stationary parts for restricting or subdividing the arc, e.g. barrier plate
    • H01H9/346—Details concerning the arc formation chamber
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/30—Means for extinguishing or preventing arc between current-carrying parts
    • H01H2009/305—Means for extinguishing or preventing arc between current-carrying parts including means for screening for arc gases as protection of mechanism against hot arc gases or for keeping arc gases in the arc chamber
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/30—Means for extinguishing or preventing arc between current-carrying parts
    • H01H9/302—Means for extinguishing or preventing arc between current-carrying parts wherein arc-extinguishing gas is evolved from stationary parts

Definitions

  • the invention relates to a miniature electrical circuit breaker with insulating molded housing having an arc-forming chamber, containing a pair of separable contacts, an arc-extinguishing chamber communicating with the arc-forming chamber and a chamber. housing the mechanism, separated from the arc-forming chamber by an intermediate insulating partition having a rectangular opening through the support arm of the movable contact, said opening being elongated in the direction of movement of said arm and delimited laterally by two ribs insulating said partition framing said arm with little play and extending to the side walls of the molded housing.
  • Degradation products mainly composed of carbon, metals and oxides, are preferably deposited on the ribs and in the corners, wherever the gas flow which drives them is deflected by an obstacle. They are deposited in particular on the intermediate partition between the arc-forming chamber and the chamber containing the mechanism, which partition obstructs the passage of gases towards the circuit-breaker mechanism and imposes a circulation of gases and a displacement of the arc towards the breaking chamber.
  • this light partition extends as short as possible between the insulators on the fixed contact side and the insulators on the movable contact side.
  • This arrangement has the defect of creating a preferred line of path between the fixed contact and the movable contact which degrades the dielectric strength of the device.
  • the present invention aims to improve the dielectric strength of the circuit breaker and it is characterized in that said ribs extend at least over part of their length parallel to the equipotential lines of the electric field generated inside said housing in the separation zone of said contacts in the open position.
  • the part of the partition constituted by the ribs parallel to the equipotential lines is subjected to a zero potential gradient, which prohibits any initiation of progression along the ribs of the partition, even if these are polluted by deposits liable to affect the dielectric strength.
  • the light partition can be continuous, the ribs being connected on both sides by rounded parts to the walls delimiting the formation chamber so as to limit as much as possible the communication opening and therefore the volume of gas. likely to escape from the formation chamber to the mechanism chamber.
  • the partition in this case has an S-shape, the central part of which is parallel to the equipotentials and the ends of which are connected to the insulating parts neighboring the fixed contact and the movable contact respectively.
  • the light partition may be integral or come from molding with the shells constituting the insulating molded housing. This partition may also belong to or be integral with arc blowing cheeks disposed in the arc-forming chamber, so as to laterally frame the movable contact.
  • the gain in dielectric strength after switching off the devices can reach 50% and depends, among other things, on the thickness of the light partition, a possible path can only occur by perforating the partition or crossing the latter to find a potential gradient favorable to its development.
  • the particular form according to the invention of the light partition is applicable to all devices which must guarantee galvanic isolation, in particular in devices undergoing pollution of insulating materials. By preventing any path, the avalanche effect resulting from the decomposition into gas of the insulators exposed to this path is avoided.
  • the pole comprises a housing 10 of a molded insulating material having on the front face 12 a handle 14 for operating the circuit breaker, and on the two narrow lateral faces of the connection terminals 16, 18. Inside the housing 10 are housed a fixed contact 22 which cooperates with a movable contact 20 pivotally mounted on an axis 24.
  • the housing 10 further comprises a thermal trip device 26 and a electromagnetic trip device 28 capable of causing an automatic opening of the contacts 20, 22 in the event of an overload or short-circuit.
  • a breaking chamber 30 constituted by a stack of sheets 32 extending parallel to the rear face 34 of the housing 10.
  • Fixing claws 36 integral with the rear face 34 are capable of cooperating with a symmetrical DIN rail for support in a manner well known to specialists.
  • an arc-forming chamber 38 containing the fixed contact 22 and the movable contact 20.
  • the arc-forming chamber 38 communicates freely with the interrupting chamber 30, the opposite side being delimited by an insulating wall 40 along which extends an arc horn 42 connecting the fixed contact 22 to the end plate 32 attached to the rear face 34.
  • a partition designated by the general reference 44 Between the arc-forming chamber 38 and the chamber arranged in the upper part of the housing 10 extends a partition designated by the general reference 44.
  • the partition 44 has a lumen 48 for passage of the arm 46 for supporting the movable contact 20 to allow free movement of the latter from the position closed shown in fig. 1 in the open position shown in FIG. 3.
  • the partition 44 limits the gas leaks caused by the arc in the formation chamber 38 towards the mechanism so as to blow the arc from the formation chamber 38 towards the breaking chamber 30 where it is extinguished.
  • the lumen 48 of the partition 44 is delimited laterally by a pair of ribs 50, 52 framing the contact arm 46 with little play.
  • the ribs 50, 52 come from molding with the two shells constituting the molded housing 10.
  • the arc-forming chamber 38 is delimited laterally by a pair of cheeks 54, 56 advantageously made of gas-generating material, which borders on the shoemaker 10 of the gas recirculation conduits favoring the displacement of the arc towards the breaking chamber 30.
  • the magnetic trip device 28 comprises a yoke 58 of which a part constitutes the end sheet of the breaking chamber 30 and a metal rod 60 cooperating with the movable contact arm 46 to extract the latter towards the open position.
  • a circuit breaker is well known to specialists and it is unnecessary to describe in more detail its constitution or operation.
  • the voltage is applied between the contacts 20, 22, the arcing horn 42 being at the potential of the fixed contact 22, while the yoke 58 and the extractor rod 60 are at the potential of the movable contact 20, 46
  • the equipotential lines 69 between these conductive parts 22, 42; 20, 46, 58, 60 are plotted in FIG. 4.
  • the partition 44 with light 48 extends at least over a part 70 of its length parallel to the equipotential lines 68.
  • the bulkhead 44 in the form of a bean is separated from the insulating parts 40, 62 by discontinuities 64, 66 arranged in the zone of the bulkhead intersecting the equipotential lines.
  • the partition 44 extends continuously between the insulating part 40 on the side of the fixed contact 22 and the insulating part 62 on the side of the movable contact 20 having a general shape in S. It should be noted that the rounded shape of the parts of the ends of the light partition 44 connecting the central part 70, parallel to the equipotential lines at the walls 40, 62 of the housing 10 avoids any sharp angle liable to affect the dielectric strength.
  • the continuous partition 44 according to FIG.
  • the partition 44 can be of a different shape, the essential point being to include a part parallel or substantially parallel to the equipotential lines. This part parallel to the equipotential lines is advantageously at the level of the opening 48, but it could be at the level of the solid parts for connection to the walls of the housing 10.
  • the partition 44 comes from molding with the housing 10, but it is clear that it can be constituted by attached parts supported either by metal parts, such as the horn 42 and the cylinder head 58 , or by insulating parts, such as the cheeks 54, 56.
  • the partition 44 and more particularly the ribs 50, 52 can moreover belong to the cheeks 54, 56, the sealing of the interface between the nuts and the walls side 10 which can be ensured by embedding or interlocking in a well known manner.
  • the nature of the material and the thickness of the partition 44 are determined as a function of the required dielectric strength. It should be noted that the particular shape according to the invention of the partition 44 makes it possible to increase the isolation capacity of any switching device whatever its voltage or the type of device.
  • the present invention has made it possible to increase the dielectric strength by a particularly simple modification which does not affect the manufacturing cost of the device.

Landscapes

  • Breakers (AREA)
  • Arc-Extinguishing Devices That Are Switches (AREA)
  • Inorganic Insulating Materials (AREA)
  • Organic Insulating Materials (AREA)
  • Contacts (AREA)
  • Table Devices Or Equipment (AREA)
  • Switches That Are Operated By Magnetic Or Electric Fields (AREA)
EP84402497A 1983-12-26 1984-12-05 Miniaturlastschalter mit dielektrischen Eigenschaften Expired EP0148058B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84402497T ATE41718T1 (de) 1983-12-26 1984-12-05 Miniaturlastschalter mit dielektrischen eigenschaften.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8320899 1983-12-26
FR8320899A FR2557354B1 (fr) 1983-12-26 1983-12-26 Disjoncteur miniature a tenue dielectrique amelioree

Publications (3)

Publication Number Publication Date
EP0148058A2 true EP0148058A2 (de) 1985-07-10
EP0148058A3 EP0148058A3 (en) 1985-08-14
EP0148058B1 EP0148058B1 (de) 1989-03-22

Family

ID=9295635

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84402497A Expired EP0148058B1 (de) 1983-12-26 1984-12-05 Miniaturlastschalter mit dielektrischen Eigenschaften

Country Status (11)

Country Link
US (1) US4604507A (de)
EP (1) EP0148058B1 (de)
JP (1) JPH0782798B2 (de)
AT (1) ATE41718T1 (de)
AU (1) AU566392B2 (de)
CA (1) CA1220248A (de)
DE (1) DE3477442D1 (de)
ES (1) ES8604003A1 (de)
FR (1) FR2557354B1 (de)
HK (1) HK93693A (de)
ZA (1) ZA849842B (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0251160A3 (en) * 1986-06-27 1988-08-24 Brown, Boveri & Cie Aktiengesellschaft Quenching device for electric circuit breaker
DE3908102A1 (de) * 1989-03-13 1990-09-20 Licentia Gmbh Selbstschalter, insbesondere leitungsschutzschalter
FR2757675A1 (fr) * 1996-12-23 1998-06-26 Schneider Electric Sa Disjoncteur electrique a ecran de securite
CN104201074A (zh) * 2014-09-16 2014-12-10 长城电器集团有限公司 一种节能型小型断路器

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3339401A1 (de) * 1983-10-29 1985-05-09 Sursum Elektrizitätsgesellschaft Leyhausen GmbH & Co, 8500 Nürnberg Selbstschalter zum aufsetzen auf schienen
CN1037794C (zh) * 1994-02-10 1998-03-18 松下电工株式会社 电流断路器
KR20030016063A (ko) * 2001-08-20 2003-02-26 엘지산전 주식회사 배선용 차단기의 지락방지 및 방진구조
US7864004B2 (en) * 2006-12-29 2011-01-04 General Electric Company Activation for switching apparatus
CN101916695B (zh) * 2010-08-06 2012-08-29 上海良信电器股份有限公司 小型断路器双层电弧隔离装置

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2733312A (en) * 1956-01-31 christensen
GB905639A (en) * 1959-06-16 1962-09-12 Crabtree & Co Ltd J A Improvements in electric circuit breakers
BE617864A (de) * 1961-05-29
US3842376A (en) * 1971-08-02 1974-10-15 Heinemann Electric Co Fastener and circuit breaker case
US3953812A (en) * 1974-10-09 1976-04-27 General Electric Company Electric circuit breaker
US4011420A (en) * 1975-01-22 1977-03-08 General Electric Company Molded case circuit breaker with improved interrupting capacity
FR2517465B1 (fr) * 1981-11-27 1986-05-02 Merlin Gerin Disjoncteur miniature a deux chambres de coupure accolees

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0251160A3 (en) * 1986-06-27 1988-08-24 Brown, Boveri & Cie Aktiengesellschaft Quenching device for electric circuit breaker
DE3908102A1 (de) * 1989-03-13 1990-09-20 Licentia Gmbh Selbstschalter, insbesondere leitungsschutzschalter
FR2757675A1 (fr) * 1996-12-23 1998-06-26 Schneider Electric Sa Disjoncteur electrique a ecran de securite
CN104201074A (zh) * 2014-09-16 2014-12-10 长城电器集团有限公司 一种节能型小型断路器

Also Published As

Publication number Publication date
JPH0782798B2 (ja) 1995-09-06
HK93693A (en) 1993-09-17
ES8604003A1 (es) 1986-01-16
CA1220248A (en) 1987-04-07
ATE41718T1 (de) 1989-04-15
DE3477442D1 (en) 1989-04-27
EP0148058A3 (en) 1985-08-14
ZA849842B (en) 1985-08-28
JPS60227332A (ja) 1985-11-12
FR2557354B1 (fr) 1986-09-05
AU3716884A (en) 1985-07-04
AU566392B2 (en) 1987-10-15
FR2557354A1 (fr) 1985-06-28
EP0148058B1 (de) 1989-03-22
US4604507A (en) 1986-08-05
ES538790A0 (es) 1986-01-16

Similar Documents

Publication Publication Date Title
EP0296915B1 (de) Drehschalter mit gebogener Lichtbogenlaufbahn
EP1995747B1 (de) Unterbrechungskammer und Sicherungsautomat, der mit einer solchen Unterbrechungskammer ausgestattet ist
EP0410902A1 (de) Niederspannungs-Hochstromschalter mit Mehrfachkontakten
FR2923649A1 (fr) Chambre de coupure et disjoncteur equipe d'une telle chambre de coupure.
EP1115132B1 (de) Pol für elektrischen Lastschalter mit Lichtbogenlöschkammer, versehen mit dielektrischen Schirmen
EP0206882B1 (de) Niederspannungsschalter mit Unterbrechung
EP0148058B1 (de) Miniaturlastschalter mit dielektrischen Eigenschaften
EP0012048B1 (de) Schalter mit rotierendem Lichtbogen
FR2596578A1 (fr) Disjoncteur electrique a autoexpansion et a arc tournant
FR2841682A1 (fr) Ampoule a vide pour un appareil de protection electrique tel un interrupteur ou un disjoncteur
FR2959347A1 (fr) Pole de coupure avec deflecteur d'arc et contacteur le comprenant
EP3133626B1 (de) Elektrischer trennschalter
EP0768692A1 (de) Autoexpansionsschalter mit Isoliergas
FR2475290A1 (fr) Chambre de coupure de disjoncteurs basse tension a joues composites de guidage de l'arc
EP2936529B1 (de) Einheitlicher abschaltblock und abschaltvorrichtung, insbesondere berührungsschalter mit mindestens einem solchen block
FR2632772A1 (fr) Disjoncteur basse tension a soufflage magnetique de l'arc par un aimant permanent
EP0095406A1 (de) Schalter mit rotierendem Lichtbogen und Permanentmagnet
EP0047696A2 (de) Kleinstselbstschalter mit Lichtbogenkontakten
EP0657907B1 (de) Stromunterbrechungsteil eines Schaltgerätes, insbesonders eines Schützes oder eines Schutzschalters
EP2771897B1 (de) Lichtbogenlöschkammer mit einem rohr zur begrenzung der auswirkungen der partikelerzeugung und elektrische schaltvorrichtung mit einer solchen lichtbogenlöschkammer
FR2734080A1 (fr) Appareil interrupteur electrique d'installation
FR2584230A1 (fr) Chambre d'extinction d'arc pour disjoncteur a basse tension a coupure dans l'air
FR2711012A1 (fr) Disjoncteur à chambre d'extinction d'arc perfectionnée.
FR2733352A1 (fr) Pole pour appareil limiteur de courant
EP0713232A1 (de) Schaltkammer eines Lastschalters

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

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

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

AK Designated contracting states

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

17P Request for examination filed

Effective date: 19851219

17Q First examination report despatched

Effective date: 19870930

ITF It: translation for a ep patent filed
GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

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

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

Ref country code: NL

Effective date: 19890322

Ref country code: AT

Effective date: 19890322

REF Corresponds to:

Ref document number: 41718

Country of ref document: AT

Date of ref document: 19890415

Kind code of ref document: T

REF Corresponds to:

Ref document number: 3477442

Country of ref document: DE

Date of ref document: 19890427

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)
NLV1 Nl: lapsed or annulled due to failure to fulfill the requirements of art. 29p and 29m of the patents act
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 19891218

Year of fee payment: 6

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
ITTA It: last paid annual fee
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Effective date: 19901231

Ref country code: CH

Effective date: 19901231

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: GB

Payment date: 19931125

Year of fee payment: 10

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

Ref country code: BE

Payment date: 19940131

Year of fee payment: 10

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

Ref country code: GB

Effective date: 19941205

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

Ref country code: BE

Effective date: 19941231

EAL Se: european patent in force in sweden

Ref document number: 84402497.6

BERE Be: lapsed

Owner name: MERLIN GERIN

Effective date: 19941231

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 19941205

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

Ref country code: SE

Payment date: 19961218

Year of fee payment: 13

ET Fr: translation filed
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

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

Effective date: 19971206

EUG Se: european patent has lapsed

Ref document number: 84402497.6

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

Ref country code: DE

Payment date: 20021203

Year of fee payment: 19

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

Ref country code: DE

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

Effective date: 20040701