US2552427A - Remote control circuit breaker - Google Patents

Remote control circuit breaker Download PDF

Info

Publication number
US2552427A
US2552427A US733207A US73320747A US2552427A US 2552427 A US2552427 A US 2552427A US 733207 A US733207 A US 733207A US 73320747 A US73320747 A US 73320747A US 2552427 A US2552427 A US 2552427A
Authority
US
United States
Prior art keywords
remote control
support
circuit breaker
movable
contacts
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
US733207A
Other languages
English (en)
Inventor
Heidmann Leon
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.)
Forges et Ateliers de Constructions Electriques de Jeumont SA
Original Assignee
Forges et Ateliers de Constructions Electriques de Jeumont 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 Forges et Ateliers de Constructions Electriques de Jeumont SA filed Critical Forges et Ateliers de Constructions Electriques de Jeumont SA
Application granted granted Critical
Publication of US2552427A publication Critical patent/US2552427A/en
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
    • H01H33/02—Details
    • H01H33/28—Power arrangements internal to the switch for operating the driving mechanism
    • H01H33/36—Power arrangements internal to the switch for operating the driving mechanism using dynamo-electric motor
    • 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
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/10—Operating or release mechanisms
    • H01H71/66—Power reset mechanisms
    • H01H71/70—Power reset mechanisms actuated by electric motor

Definitions

  • a further object of the invention is to provide a compact construction fully insulated from surrounding objects and capable of operating eificiently with either strong or weak currents of electricity.
  • a still further object of the invention is to provide an improved mechanism for quickly opening and closing a circuit, utilizing a single spring element and an electric operating motor.
  • a further object of the invention is to provide pneumatic means which will operate to damp the movable elements of the circuit breaker while at the same time blow air upon the arcs.
  • Fig. 1 is a schematic side elevational view showing the circuit breaker in closed position
  • Fig. 2 is a similar view illustrating the position of the parts just before the circuit is broken;
  • Fig. 3 is a view similar to Fig. 1, illustrating the position of the parts after the current has been broken;
  • Fig. 4 is a similar View showing the position of the parts when action has been initiated to again make the circuit
  • Fig. 5 is a similar view showing the position of the parts just prior to the making of the circuit.
  • Fig. 6 is an end elevational view of the circuit breaker as seen from the side of the arc chutes.
  • the circuit breaker has two breaks in series comprising two fixed contacts and two movable contacts.
  • the movable contacts are mounted upon a common support and are operated by the same mechanism.
  • a small series motor will close the circuit breaker when a current from a battery energizes the motor. Such energization of the motor is automatically maintained up to the time of the closing after which it is automatically interrupted and the motor being coupled in shunt, is immobilized by electrical braking.
  • Fig. 1 where the circuit breaker is shown. in closed position, one of the two fixed contacts is shown at I having the shape illustrated, and one of the two movable contacts is shown at 2 fixed upon the movable support 5, and provided with an arcing horn 3.
  • the support may pivot about the movable pivot pin 5 provided upon the rotatable lever 6 which is in turn pivoted at l.
  • the rotatable lever l8 cooperates with a hook or clasp member 8 fixed to the upper plate of a bellows 9.
  • the upper plate of the bellows 9 also has mounted thereon a cross bar It and the blowing nozzles Ii directed towards the arcing spaces.
  • the movable pivot 5' is connected by a tripping link iii to an oscillating armature is pivoted at it cooperating with the trip electro-magnet 15.
  • a compression spring I5 positioned in the manner shown in Fig. 1 between the pins 56' and H, urges downwardly the right hand side of the support 4.
  • the pin i1, fixed upon the right hand side of the support is adapted to slide in an elongated slot provided in the lower end of a remote control link I8.
  • the other end of the link I8 is pivotally attached to a crank i9 rotated by the electric motor it.
  • the motor 29' has associated with it an appropriate reduction gearing system (not shown).
  • the crank I9 is not rigidly connected to its shaft, but is constructed so as to have a certain amount of angular play, provided by an appropriate play device; for instance by a key moving in an enlarged groove provided in the crank l9. This angular play is utilized during the course of the quick closing of the circuit breaker as will appear below. Magnetic blowing is secured by providing two coils 22 which are suitably connected and which will act upon the arcing space.
  • the crank I9 is not rigidly connected to its shaft, but is constructed so as to have. a certain amount of angular play, provided by an appropriate play device, for instance by a key 30 moving angularly in an enlarged groove 3
  • the support 4, the lever B, and the upper plate of the bellows 9 are displaced as a unit downwardly while swinging about the fixed point 1, as shown in Fig. 3.
  • the contacts separate quickly under the action of the compression spring it; towards the end of the course the movement is dampened by the bellows 9 and jets of air are directed through the nozzles ll upon the two breaking arcs.
  • the pneumatic blowing is particularly useful when very feeble currents are broken and the ampere turns in the coils 28- may be insufiicient. Furthermore, the use of pneumatic blowing permits reducing the number of turns provided in the coils 28.
  • crank i9 will then leave the position shown in Figs. 1 to 3, and move in the direction of the arrow F, in Fig. 4, which raises the remote control link I8.
  • the link it raises the axis ll of the support 5 causing the latter to turn counterclockwise until the movable contact 2 reaches the fixed abutment 2!, after which the pin ll contacts the movable abutment 29 fixed to lever t and raises the lever B away from the cross bar it.
  • This movement carries the upper plate of the bellows Q upwardly through the .medium of the clasp member 5, and the tripping .link l2, which rises with the movement of the ,pivot 5, swings the armature 33' towards the electro-magnet it.
  • the elements may be arranged as shown in Fig. 6.
  • two are chutes 22 and. 23, and two blowing coils which magnetize the blowing pole pieces 24 and 25. This will reduce the breaking arcs.
  • the assembly is mounted upon a chassis 26 and the elements carrying the current are insulated therefrom.
  • the chassis in turn is supported by the insulators 2"! on the inside of a grounded box 28 so that the circuit breaker is provided with a double insulation with a full protection of the operator against contact with live parts.
  • the permanent contact is made by the heel of the movable contacts as seen in Fig. 1, which provides a suflicient contact area and a strong contact pressure while breaking takes place at the ends of the movable contacts, as shown in Fig. 2. This is advantageous for the breaking of feeble currents and skidding cannot take place due to the free unlocking of a magnetic armature.
  • the arrangement described above is advantageous also because of the fact that it comprises only a single spring l5 which assures at all times a; constant pressure of Contact, as well as the quick opening and closing of the circuit breaker.
  • the pneumatic blowing' which c'om'es' into action, more particularly during the-interruption of very feeble currents, permits reducing the number of turns in the coils for the magnetic blowing which also contributes to a reduction of weight and volume. By permitting a reduction in the magnetic blowing. effect, the arrangement also reduces at the same time the over voltagesat the break.
  • a remote control circuit breaker of the free tripping type comprising fixed contacts, a movable support, movable contacts cooperating with said fixed contacts and carried by one end of said support,.a pin upon the other end of said support, remote control closing means cooperating with said pin and including an electric motor and a remote control link interposed between said pin andsaid motor in order to bring about an intermediate position of said movable contacts before their closure, a movable pivot located between said pin and the movable contacts on'said'support,.a tripping link attached to said movable pivot, electromagnetic holding means cooperating.
  • a remote control circuit breaker in which the remote control closing means comprise upon said motor a crank driven by said motor to effect one full rotation, an angular play device between said motor and said crank adapted to act as soon as the said intermediate position has been reached and to produce a free closing movement of the breaker by said elastic means, the said remote control link having one end attached to said crank and the other end with the said elongated slot cooperating with said pin.
  • a remote control circuit breaker in which there is provided a rotatable lever carrying said movable pivot, a movable abutment on said lever to limit relative rotation of one end of said support and a fixed abutment arranged and located to act as a pivot for the other end of said support during the operation of said remote control link, whereby said tripping link is brought to its magnetically held position.
  • a remote control circuit breaker of the free tripping type comprising an electric remote control motor, a pair of fixed contacts, a rotatable lever, a movable support mounted on a pivot upon said lever, a compression spring acting upon one end of said support, two movable contacts upon the other end of said support, cooperating with said fixed contacts and adapted to occupy an opened position under the action of said spring, an intermediary position under the action of said motor, as well as a closed position under the action of the same spring, and means for providing the said three positions, comprising a trip electromagnet, an oscillating armature cooperating with said electromagnet and connected to said pivot to hold said pivot in an upper position, a crank driven by said motor to effect one full rotation, an angular play device interposed between said motor and said crank and adapted to operate in the said intermediate position only, whereby the said spring is allowed to effect a quick closing movement, a remote control link connecting said crank to the first mentioned end of said support, said link having a slot therein to provide a
  • conventional pneumatic damping and are blowing means and an arrangement for closing said contacts by a snap action without operating said pneumatic means comprising a bellows, the upper plate of which is adapted to be operated by said rotatable lever which is adapted to be held in its said upper position by said electromagnet, whereby the said movable support is permitted by said angular play device to rotate freely from its intermediate position to the closed position, the said bellows remaining stationary.

Landscapes

  • Mechanisms For Operating Contacts (AREA)
  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
  • Arc-Extinguishing Devices That Are Switches (AREA)
  • Breakers (AREA)
US733207A 1946-04-19 1947-03-07 Remote control circuit breaker Expired - Lifetime US2552427A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR927910T 1946-04-19

Publications (1)

Publication Number Publication Date
US2552427A true US2552427A (en) 1951-05-08

Family

ID=9441313

Family Applications (1)

Application Number Title Priority Date Filing Date
US733207A Expired - Lifetime US2552427A (en) 1946-04-19 1947-03-07 Remote control circuit breaker

Country Status (5)

Country Link
US (1) US2552427A (pl)
BE (1) BE472302A (pl)
CH (1) CH268301A (pl)
FR (1) FR927910A (pl)
GB (1) GB624041A (pl)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2706758A (en) * 1951-03-30 1955-04-19 Forges Ateliers Const Electr High tension interrupter switches
US2734971A (en) * 1952-09-04 1956-02-14 Circuit interrupters
US2775670A (en) * 1953-09-04 1956-12-25 Ite Circuit Breaker Ltd Combined air puffer air buffer for circuit breakers
US2787686A (en) * 1953-08-31 1957-04-02 Ite Circuit Breaker Ltd Air puffer for circuit breakers
US2809259A (en) * 1955-04-15 1957-10-08 Westinghouse Electric Corp Circuit interrupters
US2909632A (en) * 1955-02-25 1959-10-20 Merlin Gerin Electrical circuit breakers
US4704508A (en) * 1985-09-30 1987-11-03 Lorenzetti-Inebrasa S/A. Electric arc breaker
USRE32882E (en) * 1982-01-01 1989-03-07 Matsushita Electric Works, Ltd. Remote control system circuit breaker
USRE33325E (en) * 1985-02-01 1990-09-04 Matsushita Electric Works, Ltd. Remotely controllable circuit breaker
CN1034303C (zh) * 1992-11-30 1997-03-19 株式会社明电舍 开关操作机构

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US900693A (en) * 1901-09-16 1908-10-13 Gen Electric Circuit-breaker.
US1106116A (en) * 1907-04-23 1914-08-04 Cutter Electrical And Mfg Company Remote control system.
US1272445A (en) * 1914-12-18 1918-07-16 Union Switch & Signal Co Circuit-controlling device.
US1771421A (en) * 1928-09-26 1930-07-29 Asea Ab Operating mechanism for circuit breakers
US1872382A (en) * 1925-04-15 1932-08-16 Westinghouse Electric & Mfg Co High speed circuit interrupter
US2034145A (en) * 1933-10-19 1936-03-17 Gen Electric Operating mechanism
US2240656A (en) * 1937-07-31 1941-05-06 Westinghouse Electric & Mfg Co Circuit breaker
US2275891A (en) * 1938-12-07 1942-03-10 Gen Electric Electric circuit breaker
US2300884A (en) * 1941-03-24 1942-11-03 Westinghouse Electric & Mfg Co Circuit interrupter
US2347984A (en) * 1943-04-17 1944-05-02 Gen Electric Electric circuit breaker

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US900693A (en) * 1901-09-16 1908-10-13 Gen Electric Circuit-breaker.
US1106116A (en) * 1907-04-23 1914-08-04 Cutter Electrical And Mfg Company Remote control system.
US1272445A (en) * 1914-12-18 1918-07-16 Union Switch & Signal Co Circuit-controlling device.
US1872382A (en) * 1925-04-15 1932-08-16 Westinghouse Electric & Mfg Co High speed circuit interrupter
US1771421A (en) * 1928-09-26 1930-07-29 Asea Ab Operating mechanism for circuit breakers
US2034145A (en) * 1933-10-19 1936-03-17 Gen Electric Operating mechanism
US2240656A (en) * 1937-07-31 1941-05-06 Westinghouse Electric & Mfg Co Circuit breaker
US2275891A (en) * 1938-12-07 1942-03-10 Gen Electric Electric circuit breaker
US2300884A (en) * 1941-03-24 1942-11-03 Westinghouse Electric & Mfg Co Circuit interrupter
US2347984A (en) * 1943-04-17 1944-05-02 Gen Electric Electric circuit breaker

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2706758A (en) * 1951-03-30 1955-04-19 Forges Ateliers Const Electr High tension interrupter switches
US2734971A (en) * 1952-09-04 1956-02-14 Circuit interrupters
US2787686A (en) * 1953-08-31 1957-04-02 Ite Circuit Breaker Ltd Air puffer for circuit breakers
US2775670A (en) * 1953-09-04 1956-12-25 Ite Circuit Breaker Ltd Combined air puffer air buffer for circuit breakers
US2909632A (en) * 1955-02-25 1959-10-20 Merlin Gerin Electrical circuit breakers
US2809259A (en) * 1955-04-15 1957-10-08 Westinghouse Electric Corp Circuit interrupters
USRE32882E (en) * 1982-01-01 1989-03-07 Matsushita Electric Works, Ltd. Remote control system circuit breaker
USRE33325E (en) * 1985-02-01 1990-09-04 Matsushita Electric Works, Ltd. Remotely controllable circuit breaker
US4704508A (en) * 1985-09-30 1987-11-03 Lorenzetti-Inebrasa S/A. Electric arc breaker
CN1034303C (zh) * 1992-11-30 1997-03-19 株式会社明电舍 开关操作机构

Also Published As

Publication number Publication date
CH268301A (fr) 1950-05-15
GB624041A (en) 1949-05-26
FR927910A (fr) 1947-11-13
BE472302A (pl)

Similar Documents

Publication Publication Date Title
US2552427A (en) Remote control circuit breaker
US2909632A (en) Electrical circuit breakers
GB1290386A (pl)
GB514359A (en) Improvements in and relating to electric switches
US1753180A (en) Switch-actuating mechanism
US3911240A (en) Dual spring load break switch
GB202321A (en) Improvements in and relating to thermally controlled electric switches
US3299377A (en) Synchronous operating mechanisms for controlling circuit breakers
US2284840A (en) Fluid blast circuit breaker
US2992308A (en) High speed switch with impact armature
US2549441A (en) Electric switch operator
GB831586A (en) Improvements in or relating to electric switches
US2204393A (en) Auxiliary switch
US1813191A (en) High speed circuit breaker
US1448383A (en) Switching device
US3364326A (en) Double-break synchronously operated circuit breaker with connecting bar rotating in enlarged opening in magnet structure
US2355075A (en) Circuit breaker operating mechanism
US2428482A (en) Circuit interrupter
US2240656A (en) Circuit breaker
US2601482A (en) Circuit breaker-blow open, blow closed contacts
US2383403A (en) Circuit breaker
GB716090A (en) Improvements in or relating to electromagnetic contactors
US2521497A (en) Percussion trip device for electric circuit breakers
US1779848A (en) Circuit breaker
JPH019058Y2 (pl)