GB567616A - Improvements in and relating to electric circuit interrupters and magnetic blow-outstherefor - Google Patents

Improvements in and relating to electric circuit interrupters and magnetic blow-outstherefor

Info

Publication number
GB567616A
GB567616A GB6972/43A GB697243A GB567616A GB 567616 A GB567616 A GB 567616A GB 6972/43 A GB6972/43 A GB 6972/43A GB 697243 A GB697243 A GB 697243A GB 567616 A GB567616 A GB 567616A
Authority
GB
United Kingdom
Prior art keywords
magnet
contact
arc
magnetic blow
per cent
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
Application number
GB6972/43A
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.)
British Thomson Houston Co Ltd
Original Assignee
British Thomson Houston Co Ltd
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 British Thomson Houston Co Ltd filed Critical British Thomson Houston Co Ltd
Publication of GB567616A publication Critical patent/GB567616A/en
Expired legal-status Critical Current

Links

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
    • H01H9/44—Means for extinguishing or preventing arc between current-carrying parts using blow-out magnet
    • H01H9/443—Means for extinguishing or preventing arc between current-carrying parts using blow-out magnet using permanent magnets

Landscapes

  • Arc-Extinguishing Devices That Are Switches (AREA)

Abstract

567,616. Magnetic blow-outs. BRITISH THOMSON-HOUSTON CO., Ltd. May 3, 1943, No. 6972. Convention date, May 6, 1942. [Class 38 (v)] A magnetic blow-out device suitable for manually - operable and other slow - moving switches, comprises a magnet, which is preferably permanent and attached to the movable contact, arranged to produce a flux across the contact-surface, whereby the arc is drawn towards the movable contact and into cool air in the opening movement. The magnet may comprise an alloy of 6-15 per cent aluminium, 12-30 per cent nickel, 5 per cent copper if desired, and the rest iron. A button. 32 welded to a carrier strip 21 may be backed by a bar magnet, but, as shown, lies between polepieces 35, 36 of a U-shaped magnet 34 crimped into slots in strip 21. When 32 separates from fixed contact 15, successive planes of flux A<1>, B<1>, &c., each having the pattern shown at A' in Fig. 3, drive the arc from position A through B, C, &c. to H, so drawing the arc after the movable contact, with a force which gradually increases, into cooler air, where it is extinguished. The contact-structure is incorporated in a switch similar to that described in Specification 561,984, Figs. 1, 2 (not shown).
GB6972/43A 1942-05-06 1943-05-03 Improvements in and relating to electric circuit interrupters and magnetic blow-outstherefor Expired GB567616A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US441894A US2340682A (en) 1942-05-06 1942-05-06 Electric contact element

Publications (1)

Publication Number Publication Date
GB567616A true GB567616A (en) 1945-02-23

Family

ID=23754715

Family Applications (1)

Application Number Title Priority Date Filing Date
GB6972/43A Expired GB567616A (en) 1942-05-06 1943-05-03 Improvements in and relating to electric circuit interrupters and magnetic blow-outstherefor

Country Status (2)

Country Link
US (1) US2340682A (en)
GB (1) GB567616A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1025484B (en) * 1954-06-22 1958-03-06 Siemens Ag Arc chamber without blowing elements with iron enclosure for switchgear
DE2344365A1 (en) * 1973-09-03 1975-03-27 Elmeg ELECTROMAGNETIC RELAY
FR2410874A1 (en) * 1977-12-05 1979-06-29 Hazemeijer Bv VACUUM ELECTRIC SWITCH

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US2733312A (en) * 1956-01-31 christensen
US2613299A (en) * 1947-01-11 1952-10-07 Ite Circuit Breaker Ltd High-voltage circuit breaker
US2629035A (en) * 1948-02-12 1953-02-17 Post Glover Electric Company Magnetic blowout construction and shield
US2644875A (en) * 1948-07-01 1953-07-07 Roller Smith Corp Air circuit breaker
US2611059A (en) * 1950-07-07 1952-09-16 Westinghouse Electric Corp Electric switch with permanentmagnet blowout field
US2704315A (en) * 1951-12-18 1955-03-15 Fed Electric Prod Co Magnetic blow-out for circuit-breakers
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DE3175072D1 (en) * 1981-11-21 1986-09-11 Sprecher & Schuh Ag Contact piece for an electric switch apparatus, in particular for a protrective switch
IT1292453B1 (en) 1997-07-02 1999-02-08 Aeg Niederspannungstech Gmbh ROTATING GROUP OF CONTACTS FOR HIGH FLOW SWITCHES
DE19819242B4 (en) 1998-04-29 2005-11-10 Ge Power Controls Polska Sp.Z.O.O. Thermomagnetic circuit breaker
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US6268991B1 (en) 1999-06-25 2001-07-31 General Electric Company Method and arrangement for customizing electronic circuit interrupters
US6218917B1 (en) 1999-07-02 2001-04-17 General Electric Company Method and arrangement for calibration of circuit breaker thermal trip unit
US6188036B1 (en) 1999-08-03 2001-02-13 General Electric Company Bottom vented circuit breaker capable of top down assembly onto equipment
US6710988B1 (en) 1999-08-17 2004-03-23 General Electric Company Small-sized industrial rated electric motor starter switch unit
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US6396369B1 (en) 1999-08-27 2002-05-28 General Electric Company Rotary contact assembly for high ampere-rated circuit breakers
US6175288B1 (en) 1999-08-27 2001-01-16 General Electric Company Supplemental trip unit for rotary circuit interrupters
US6232570B1 (en) 1999-09-16 2001-05-15 General Electric Company Arcing contact arrangement
US6326869B1 (en) 1999-09-23 2001-12-04 General Electric Company Clapper armature system for a circuit breaker
US6239395B1 (en) 1999-10-14 2001-05-29 General Electric Company Auxiliary position switch assembly for a circuit breaker
US6229413B1 (en) 1999-10-19 2001-05-08 General Electric Company Support of stationary conductors for a circuit breaker
US6317018B1 (en) 1999-10-26 2001-11-13 General Electric Company Circuit breaker mechanism
US6232856B1 (en) 1999-11-02 2001-05-15 General Electric Company Magnetic shunt assembly
EP1098343B1 (en) 1999-11-03 2005-09-21 AEG Niederspannungstechnik GmbH & Co. KG Circuit breaker rotary contact arm arrangement
US6377144B1 (en) 1999-11-03 2002-04-23 General Electric Company Molded case circuit breaker base and mid-cover assembly
US6300586B1 (en) 1999-12-09 2001-10-09 General Electric Company Arc runner retaining feature
US6310307B1 (en) 1999-12-17 2001-10-30 General Electric Company Circuit breaker rotary contact arm arrangement
US6172584B1 (en) 1999-12-20 2001-01-09 General Electric Company Circuit breaker accessory reset system
US6184761B1 (en) 1999-12-20 2001-02-06 General Electric Company Circuit breaker rotary contact arrangement
US6215379B1 (en) 1999-12-23 2001-04-10 General Electric Company Shunt for indirectly heated bimetallic strip
US6281461B1 (en) 1999-12-27 2001-08-28 General Electric Company Circuit breaker rotor assembly having arc prevention structure
US6346869B1 (en) 1999-12-28 2002-02-12 General Electric Company Rating plug for circuit breakers
US6211758B1 (en) 2000-01-11 2001-04-03 General Electric Company Circuit breaker accessory gap control mechanism
US6239677B1 (en) 2000-02-10 2001-05-29 General Electric Company Circuit breaker thermal magnetic trip unit
US6429759B1 (en) 2000-02-14 2002-08-06 General Electric Company Split and angled contacts
US6313425B1 (en) 2000-02-24 2001-11-06 General Electric Company Cassette assembly with rejection features
US6281458B1 (en) 2000-02-24 2001-08-28 General Electric Company Circuit breaker auxiliary magnetic trip unit with pressure sensitive release
US6404314B1 (en) 2000-02-29 2002-06-11 General Electric Company Adjustable trip solenoid
US6204743B1 (en) 2000-02-29 2001-03-20 General Electric Company Dual connector strap for a rotary contact circuit breaker
US6448521B1 (en) 2000-03-01 2002-09-10 General Electric Company Blocking apparatus for circuit breaker contact structure
US6340925B1 (en) 2000-03-01 2002-01-22 General Electric Company Circuit breaker mechanism tripping cam
US6346868B1 (en) 2000-03-01 2002-02-12 General Electric Company Circuit interrupter operating mechanism
US6379196B1 (en) * 2000-03-01 2002-04-30 General Electric Company Terminal connector for a circuit breaker
US6366438B1 (en) 2000-03-06 2002-04-02 General Electric Company Circuit interrupter rotary contact arm
US6459349B1 (en) 2000-03-06 2002-10-01 General Electric Company Circuit breaker comprising a current transformer with a partial air gap
US6211757B1 (en) 2000-03-06 2001-04-03 General Electric Company Fast acting high force trip actuator
US6496347B1 (en) 2000-03-08 2002-12-17 General Electric Company System and method for optimization of a circuit breaker mechanism
US6429659B1 (en) 2000-03-09 2002-08-06 General Electric Company Connection tester for an electronic trip unit
US6366188B1 (en) 2000-03-15 2002-04-02 General Electric Company Accessory and recess identification system for circuit breakers
US6218919B1 (en) 2000-03-15 2001-04-17 General Electric Company Circuit breaker latch mechanism with decreased trip time
US6232859B1 (en) 2000-03-15 2001-05-15 General Electric Company Auxiliary switch mounting configuration for use in a molded case circuit breaker
US6459059B1 (en) * 2000-03-16 2002-10-01 General Electric Company Return spring for a circuit interrupter operating mechanism
US6421217B1 (en) 2000-03-16 2002-07-16 General Electric Company Circuit breaker accessory reset system
FR2806548B1 (en) 2000-03-17 2002-08-23 Ge Power Controls France EXTRACTABLE MECHANISM FOR CIRCUIT BREAKERS
US6639168B1 (en) 2000-03-17 2003-10-28 General Electric Company Energy absorbing contact arm stop
US6476698B1 (en) 2000-03-17 2002-11-05 General Electric Company Convertible locking arrangement on breakers
US6586693B2 (en) 2000-03-17 2003-07-01 General Electric Company Self compensating latch arrangement
US6472620B2 (en) 2000-03-17 2002-10-29 Ge Power Controls France Sas Locking arrangement for circuit breaker draw-out mechanism
US6373010B1 (en) 2000-03-17 2002-04-16 General Electric Company Adjustable energy storage mechanism for a circuit breaker motor operator
US6479774B1 (en) 2000-03-17 2002-11-12 General Electric Company High energy closing mechanism for circuit breakers
US6388213B1 (en) 2000-03-17 2002-05-14 General Electric Company Locking device for molded case circuit breakers
US6559743B2 (en) 2000-03-17 2003-05-06 General Electric Company Stored energy system for breaker operating mechanism
US6747535B2 (en) 2000-03-27 2004-06-08 General Electric Company Precision location system between actuator accessory and mechanism
US6995640B2 (en) * 2000-05-16 2006-02-07 General Electric Company Pressure sensitive trip mechanism for circuit breakers
US6373357B1 (en) 2000-05-16 2002-04-16 General Electric Company Pressure sensitive trip mechanism for a rotary breaker
US6400245B1 (en) 2000-10-13 2002-06-04 General Electric Company Draw out interlock for circuit breakers
US6531941B1 (en) 2000-10-19 2003-03-11 General Electric Company Clip for a conductor in a rotary breaker
US6806800B1 (en) 2000-10-19 2004-10-19 General Electric Company Assembly for mounting a motor operator on a circuit breaker
US6429760B1 (en) 2000-10-19 2002-08-06 General Electric Company Cross bar for a conductor in a rotary breaker
US6362711B1 (en) 2000-11-10 2002-03-26 General Electric Company Circuit breaker cover with screw locating feature
US6380829B1 (en) 2000-11-21 2002-04-30 General Electric Company Motor operator interlock and method for circuit breakers
US6448522B1 (en) 2001-01-30 2002-09-10 General Electric Company Compact high speed motor operator for a circuit breaker
US6476337B2 (en) 2001-02-26 2002-11-05 General Electric Company Auxiliary switch actuation arrangement
US6882258B2 (en) * 2001-02-27 2005-04-19 General Electric Company Mechanical bell alarm assembly for a circuit breaker
US6678135B2 (en) 2001-09-12 2004-01-13 General Electric Company Module plug for an electronic trip unit
US6469882B1 (en) 2001-10-31 2002-10-22 General Electric Company Current transformer initial condition correction
US6804101B2 (en) 2001-11-06 2004-10-12 General Electric Company Digital rating plug for electronic trip unit in circuit breakers
DE102012201257A1 (en) * 2012-01-30 2013-08-01 Siemens Aktiengesellschaft Rotor housing for aperture mechanism of electrical circuit breaker, has connecting element for locally connecting housing elements, where connecting element has shaft section for rotary storage of part of opening mechanism

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1025484B (en) * 1954-06-22 1958-03-06 Siemens Ag Arc chamber without blowing elements with iron enclosure for switchgear
DE2344365A1 (en) * 1973-09-03 1975-03-27 Elmeg ELECTROMAGNETIC RELAY
FR2410874A1 (en) * 1977-12-05 1979-06-29 Hazemeijer Bv VACUUM ELECTRIC SWITCH
US4271340A (en) 1977-12-05 1981-06-02 Hazemeijer B.V. Electrical vacuum switch having means for generating an axial magnetic field between the contact faces
USRE32116E (en) * 1977-12-05 1986-04-15 Hazemeijer B.V. Electrical vacuum switch having means for generating an axial magnetic field between the contact faces

Also Published As

Publication number Publication date
US2340682A (en) 1944-02-01

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