US3593227A - Automatic electrodynamic blowoff breaker with stationary contact form of two series wound u-shaped members - Google Patents

Automatic electrodynamic blowoff breaker with stationary contact form of two series wound u-shaped members Download PDF

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Publication number
US3593227A
US3593227A US709100A US3593227DA US3593227A US 3593227 A US3593227 A US 3593227A US 709100 A US709100 A US 709100A US 3593227D A US3593227D A US 3593227DA US 3593227 A US3593227 A US 3593227A
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United States
Prior art keywords
movable
stationary
contact means
breaker
automatic
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Expired - Lifetime
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US709100A
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English (en)
Inventor
Gennady Fedosievich Mitskevich
Anatoly Mikhailovic Bela-Belov
Vladislav Yakovlevich Guschin
Viktor Izrailevich Rakhlis
Viktor Revoldovich Oktyabrev
Jury Nikolaevich Voronstov
Oleg Ivanovich Artsybashev
Fedor Andreevich Vakhomchik
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Individual
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Publication of US3593227A publication Critical patent/US3593227A/en
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    • 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
    • H01H77/107—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 the blow-off force generating means, e.g. current loops

Definitions

  • SHAPED MEMEERS ABSTRACT An automatic breaker, each pole of which comprises a movable and stationary system of contacts, characl Cl u 335/ I6, terized in that the stationary contact system is constituted as a 200/ I47, 335/147, 335/ I95 series-wound coil having at least one tum and serving as an [5
  • the present invention relates to automatic breakers of high switching capacity, designed to protect electrical units against short circuit currents and overloads, as well as intended for operational switchings of AC and DC circuits.
  • Breakers similar to the above-mentioned breakers are usually of low switching capacity.
  • the system of the stationary contact is fashioned as at least a double-wound series coil serving as an electrodynamic current limiter and consisting of stationary and movable parts, the movable part of the coil functioning as a stationary contact.
  • the movable part of the series coil may have an elongated end serving as an arcing horn of the stationary contact.
  • FIG. 1 is a general view of the automatic breaker, according to the invention.
  • FIG. 2 (a, b, c, and 4) shows the positioning of the contacts of the automatic breaker, according to the invention.
  • a plastic body 1 (FIG. I) of the automatic breaker Provided in a plastic body 1 (FIG. I) of the automatic breaker are movable and stationary systems of contacts, 2 and 3 respectively, an automatic breaker controlling mechanism 4, a maximum current release gear 5 intended for switching off the automatic breaker in case of emergency duty of a circuit protected.
  • the contact systems 2 and 3 are provided in each pole of the automatic breaker under an arcing suppressor made of steel plates 6 fastened on insulation walls 7, and a flame-extinguishing grid 8.
  • the stationary contact system 3 is fashioned as a double wound coil serving as an electrodynamic current limiter, and includes stationary and movable parts, 9 and I0 respectively.
  • a working contact II is fastened on the movable part 10 having an elongated end 12 serving as an arcing horn.
  • the movable and stationary parts 10 and 9 respectively, of the series coil are interconnected by means of an axle l3 and a currentcondueting flexible coupling 14 insuring the current flow from one part of the series coil to the other, unimpeding the turn ofthe movable part I0 about the axle I3.
  • a current-conducting hinge For connection of the movable and stationary parts of the coil, a current-conducting hinge may be provided.
  • One end of the stationary part 9 of the coil has an aperture 15 for connection of exterior conductors of the main circuit.
  • the flexible part I0 of the coil is fitted with a spring 16 in suring the contact pressure, with the automatic breaker contacts being closed.
  • the movable system 2 of the contacts of each pole of the breaker comprises a contact 17 and a contact holder 18 connectable, by means of a flexible coupling I9, with a leadout bus bar 20.
  • the contact holder 18 has an arcing horn 21.
  • the contact holder 18 of each pole of the breaker is connected, by means of the controlling mechanism 4, with a handle 22 designed for manual control of the automatic breaker.
  • the handle 22 In order to actuate the automatic breaker, the handle 22 is transferred into the position A; as a result, the controlling mechanism 4 speedily rapidly shifts the contact holders l8 and instantly closes the contacts I] and I7 (FIG. 2a), said closure being independent of the speed of travel of the handle 22.
  • a closed electric circuit is thus formed.
  • the electrodynamic circuit induced by the series coil as well as the strain of the spring 16 are selected to be such that the turn of the movable part 15 occurs only after the current reaches a certain magnitude, i.e. the current of electrodynamic setting.
  • the arc travelling along the arcing horns I2 and 21, passes into an arching suppressor wherein it is dissipated and deionized by means of plates 6 (FIG, I).
  • the flame and incan descent gases caused by the are burning pass into the flameextinguishing grid 8 wherein they are intensively cooled.
  • the maximum current release gear 5 becomes operable, actuating the controlling mechanism 4 having a limited time of operation, which in turn withdraws the contact holder I8 keeping it in a withdrawn position insuring preset intervals for the contacts I1 and 17 (FIG. 2d).
  • the handle 22 occupies the position B (FIG. 1).
  • the movable part I0 of the coil remains in a turned position (FIG. 2c) as long as the electric arc exists, as a result of the current flow through said coil.
  • the movable part ll) of the series coil returns to the initial position under the action of the spring I6.
  • the contact holders [8 are in the withdrawn position (FIG. 74).
  • the position of the handle 22 (FIG. 1) indicates the switching position of the automatic breaker.
  • the handle 22 occupies the position A; if said breaker is switched off manually, the
  • the proposed automatic breaker is quick-acting, has small dimensions and insures reliable protection against overloads and short circuits of powerful electric circuits (grids) with strong short circuit currents.
  • Said breaker permits both manual and remote control since it does not require any change of parts after switching off short circuit current grids, as is the case with similar breakers provided with fuses; after switching off it is always ready for repeated operation.
  • An automatic breaker comprising movable contact means, and stationary contact means, said stationary contact means comprising a stationary member, and a movable member, said movable member and said stationary member each being substantially U-shaped, said movable member and said stationary member each including an end portion pivotally connected to one another about a fixed axis such that said movable member is pivotally dispiaceable about the fixed axis relative to said stationary member and to constitute said stationary contact means as a continuous series wound coil.
  • An automatic breaker as claimed in claim I including resilient means interposed between said movable and stationary members.
  • An automatic breaker as claimed in claim 1 including a contact element connected to said movable member, said movable contact means including a contact element adapted for contacting said contact element of said movable member.
  • An automatic breaker as claimed in claim I including a lever connected to said movable contact means and adapted for permitting a manual displacement of said movable contact means.
  • An automatic breaker as claimed in claim 1 including arcing suppressor means and a flame-extinguishing grid connected proximate said movable and stationary contact means.
  • An automatic breaker as claimed in claim 1 including a bus bar, and a flexible coupling interconnecting said movable contact means with said bus bar.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Arc-Extinguishing Devices That Are Switches (AREA)
  • Breakers (AREA)
US709100A 1968-02-28 1968-02-28 Automatic electrodynamic blowoff breaker with stationary contact form of two series wound u-shaped members Expired - Lifetime US3593227A (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
US70910068A 1968-02-28 1968-02-28
FR142358 1968-03-05
DEN0032230 1968-03-05
GB00856/68A GB1210566A (en) 1968-02-28 1968-03-06 Automatic circuit-breaker
BE713240 1968-04-04

Publications (1)

Publication Number Publication Date
US3593227A true US3593227A (en) 1971-07-13

Family

ID=27507692

Family Applications (1)

Application Number Title Priority Date Filing Date
US709100A Expired - Lifetime US3593227A (en) 1968-02-28 1968-02-28 Automatic electrodynamic blowoff breaker with stationary contact form of two series wound u-shaped members

Country Status (5)

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US (1) US3593227A (US07122603-20061017-C00294.png)
BE (1) BE713240A (US07122603-20061017-C00294.png)
DE (1) DE1638094B1 (US07122603-20061017-C00294.png)
FR (1) FR1604827A (US07122603-20061017-C00294.png)
GB (1) GB1210566A (US07122603-20061017-C00294.png)

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3663905A (en) * 1971-05-20 1972-05-16 Ite Imperial Corp Contact bridge system for circuit breaker
US3921109A (en) * 1974-06-20 1975-11-18 Westinghouse Electric Corp Circuit-interrupter
US4072916A (en) * 1975-12-19 1978-02-07 I-T-E Imperial Corporation Stacked circuit breakers having high interrupting capacity
US4158827A (en) * 1977-06-21 1979-06-19 Westinghouse Electric Corp. Current limiting contactor
EP0003447A1 (fr) * 1978-01-31 1979-08-08 Merlin Gerin Dispositif de limitation et de coupure de courant
US4237355A (en) * 1977-01-25 1980-12-02 La Telemecanique Electrique Blowing element
DE3411276A1 (de) * 1983-03-28 1984-10-04 Siemens-Allis, Inc., Atlanta, Ga. Leistungsschalter
DE3411273A1 (de) * 1983-03-28 1984-10-04 Siemens-Allis, Inc., Atlanta, Ga. Leistungsschalter
US4529853A (en) * 1980-11-17 1985-07-16 Merlin Gerin Electric circuit breaker with self blow-out by rotation of the arc
WO1988003324A1 (en) * 1986-10-24 1988-05-05 Square D Company Circuit breaker contact assembly
US4804933A (en) * 1988-04-01 1989-02-14 Brown Industrial Gas, Inc. Automatic transfer switch
US4849590A (en) * 1988-04-01 1989-07-18 Kohler Company Electric switch with counteracting electro-electro-dynamic forces
US4916419A (en) * 1986-10-24 1990-04-10 Square D Company Circuit breaker contact assembly
EP0482197A1 (en) * 1989-06-30 1992-04-29 Hitachi, Ltd. Circuit breaker
US5189384A (en) * 1991-11-06 1993-02-23 Westinghouse Electric Corp. Circuit breaker having improved contact structure
US5583328A (en) * 1992-07-02 1996-12-10 Mitsubishi Denki Kabushiki Kaisha High voltage switch including U-shaped, slitted stationary contact assembly with arc extinguishing/magnetic blowout features
DE19700758C1 (de) * 1997-01-11 1998-04-02 Kloeckner Moeller Gmbh Schalter mit mindestens einem feststehenden Schaltstück
US20090179009A1 (en) * 2008-01-14 2009-07-16 Siemens Aktiengesellschaft Switching device, in particular a power switching device, having two pairs of series-connected switching contacts for interrupting a conducting path
US20160071677A1 (en) * 2013-05-24 2016-03-10 Tyco Electronics Austria Gmbh Electric Switching Device with Enhanced Lorentz Force Bias

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007011694B4 (de) * 2007-03-09 2014-08-21 Siemens Aktiengesellschaft Schutzschaltelement mit magnetisch bewegtem Leiter
RU193559U1 (ru) * 2019-04-04 2019-11-05 Федеральное государственное бюджетное образовательное учреждение высшего образования "Чувашский государственный университет имени Ильи Николаевича Ульянова" Контактное устройство с электродинамической компенсацией

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE534048A (US07122603-20061017-C00294.png) * 1953-12-11
US2577425A (en) * 1949-07-29 1951-12-04 Marcoz Jean Thermal cutout switches
US2821594A (en) * 1954-02-04 1958-01-28 Merlin Gerin Electrodynamic compensation device for pressure contacts
FR1259118A (fr) * 1960-05-11 1961-04-21 Elektro App Werke Veb Disjoncteur à maximum de courant
US3092699A (en) * 1958-12-23 1963-06-04 Merlin Gerin Electrodynamic force-compensation pressure contacts for circuit breakers
FR1343823A (fr) * 1961-10-27 1963-11-22 Licentia Gmbh Interrupteur limitateur du courant
US3218418A (en) * 1961-05-19 1965-11-16 Westinghouse Electric Corp Circuit breaker with arc-extinguishing means
CH424931A (fr) * 1964-08-01 1966-11-30 Merlin Gerin Interrupteur à contacts soumis à une pression électrodynamique

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DD25067A (US07122603-20061017-C00294.png) *
CH109564A (de) * 1924-04-24 1925-04-01 Oerlikon Maschf Elektrischer Schnellschalter.
DE1127452B (de) * 1960-02-16 1962-04-12 Elektro App Werke J W Stalin V Elektrischer UEberstromselbstschalter
DE1148313B (de) * 1961-07-11 1963-05-09 Elektro App Werke Veb Strombegrenzender Schnellschalter mit Haupt- und Abreisskontakt

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2577425A (en) * 1949-07-29 1951-12-04 Marcoz Jean Thermal cutout switches
BE534048A (US07122603-20061017-C00294.png) * 1953-12-11
US2821594A (en) * 1954-02-04 1958-01-28 Merlin Gerin Electrodynamic compensation device for pressure contacts
US3092699A (en) * 1958-12-23 1963-06-04 Merlin Gerin Electrodynamic force-compensation pressure contacts for circuit breakers
FR1259118A (fr) * 1960-05-11 1961-04-21 Elektro App Werke Veb Disjoncteur à maximum de courant
US3218418A (en) * 1961-05-19 1965-11-16 Westinghouse Electric Corp Circuit breaker with arc-extinguishing means
FR1343823A (fr) * 1961-10-27 1963-11-22 Licentia Gmbh Interrupteur limitateur du courant
CH424931A (fr) * 1964-08-01 1966-11-30 Merlin Gerin Interrupteur à contacts soumis à une pression électrodynamique

Cited By (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3663905A (en) * 1971-05-20 1972-05-16 Ite Imperial Corp Contact bridge system for circuit breaker
US3921109A (en) * 1974-06-20 1975-11-18 Westinghouse Electric Corp Circuit-interrupter
US4072916A (en) * 1975-12-19 1978-02-07 I-T-E Imperial Corporation Stacked circuit breakers having high interrupting capacity
US4237355A (en) * 1977-01-25 1980-12-02 La Telemecanique Electrique Blowing element
US4158827A (en) * 1977-06-21 1979-06-19 Westinghouse Electric Corp. Current limiting contactor
FR2416541A1 (fr) * 1978-01-31 1979-08-31 Merlin Gerin Dispositif de limitation et de coupure de courant
EP0003447A1 (fr) * 1978-01-31 1979-08-08 Merlin Gerin Dispositif de limitation et de coupure de courant
US4529853A (en) * 1980-11-17 1985-07-16 Merlin Gerin Electric circuit breaker with self blow-out by rotation of the arc
DE3411276A1 (de) * 1983-03-28 1984-10-04 Siemens-Allis, Inc., Atlanta, Ga. Leistungsschalter
DE3411273A1 (de) * 1983-03-28 1984-10-04 Siemens-Allis, Inc., Atlanta, Ga. Leistungsschalter
DE3411276C2 (US07122603-20061017-C00294.png) * 1983-03-28 1993-04-08 Siemens Ag, 8000 Muenchen, De
WO1988003324A1 (en) * 1986-10-24 1988-05-05 Square D Company Circuit breaker contact assembly
US4916419A (en) * 1986-10-24 1990-04-10 Square D Company Circuit breaker contact assembly
US4849590A (en) * 1988-04-01 1989-07-18 Kohler Company Electric switch with counteracting electro-electro-dynamic forces
US4804933A (en) * 1988-04-01 1989-02-14 Brown Industrial Gas, Inc. Automatic transfer switch
EP0482197A1 (en) * 1989-06-30 1992-04-29 Hitachi, Ltd. Circuit breaker
EP0482197A4 (en) * 1989-06-30 1992-11-25 Hitachi, Ltd. Circuit breaker
US5189384A (en) * 1991-11-06 1993-02-23 Westinghouse Electric Corp. Circuit breaker having improved contact structure
US5583328A (en) * 1992-07-02 1996-12-10 Mitsubishi Denki Kabushiki Kaisha High voltage switch including U-shaped, slitted stationary contact assembly with arc extinguishing/magnetic blowout features
US5596184A (en) * 1992-07-02 1997-01-21 Mitsubishi Denki Kabushiki Kaisha Switch including a moving element, a repelling element and a conductor
DE19700758C1 (de) * 1997-01-11 1998-04-02 Kloeckner Moeller Gmbh Schalter mit mindestens einem feststehenden Schaltstück
FR2758413A1 (fr) * 1997-01-11 1998-07-17 Kloeckner Moeller Gmbh Interrupteur muni d'au moins une piece fixe de contact
US5898148A (en) * 1997-01-11 1999-04-27 Klockner Moeller Gmbh Coil shaped terminal for an electrodynamically operated circuit breaker
US20090179009A1 (en) * 2008-01-14 2009-07-16 Siemens Aktiengesellschaft Switching device, in particular a power switching device, having two pairs of series-connected switching contacts for interrupting a conducting path
US7902948B2 (en) * 2008-01-14 2011-03-08 Siemens Aktiengesellschaft Switching device, in particular a power switching device, having two pairs of series-connected switching contacts for interrupting a conducting path
US20160071677A1 (en) * 2013-05-24 2016-03-10 Tyco Electronics Austria Gmbh Electric Switching Device with Enhanced Lorentz Force Bias
US9691562B2 (en) * 2013-05-24 2017-06-27 Tyco Electronics Austria Gmbh Electric switching device with enhanced Lorentz force bias

Also Published As

Publication number Publication date
BE713240A (US07122603-20061017-C00294.png) 1968-10-04
FR1604827A (US07122603-20061017-C00294.png) 1972-04-17
GB1210566A (en) 1970-10-28
DE1638094B1 (de) 1971-08-26

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