US3102933A - Multipolar circuit maker and breaker - Google Patents

Multipolar circuit maker and breaker Download PDF

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Publication number
US3102933A
US3102933A US102064A US10206461A US3102933A US 3102933 A US3102933 A US 3102933A US 102064 A US102064 A US 102064A US 10206461 A US10206461 A US 10206461A US 3102933 A US3102933 A US 3102933A
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United States
Prior art keywords
circuit
knob
breaker
annuli
contact
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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
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US102064A
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English (en)
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Berthier Emile Andre
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Individual
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Individual
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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
    • H01H33/53—Cases; Reservoirs, tanks, piping or valves, for arc-extinguishing fluid; Accessories therefor, e.g. safety arrangements, pressure relief devices
    • H01H33/56—Gas reservoirs
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/16—Magnetic circuit arrangements
    • H01H50/18—Movable parts of magnetic circuits, e.g. armature
    • H01H50/20—Movable parts of magnetic circuits, e.g. armature movable inside coil and substantially lengthwise with respect to axis thereof; movable coaxially with respect to coil
    • 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
    • H01H71/12—Automatic release mechanisms with or without manual release
    • H01H71/14—Electrothermal mechanisms
    • H01H71/16—Electrothermal mechanisms with bimetal element
    • H01H71/162—Electrothermal mechanisms with bimetal element with compensation for ambient temperature
    • 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
    • H01H71/12—Automatic release mechanisms with or without manual release
    • H01H71/40—Combined electrothermal and electromagnetic mechanisms
    • 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
    • H01H71/12—Automatic release mechanisms with or without manual release
    • H01H71/46—Automatic release mechanisms with or without manual release having means for operating auxiliary contacts additional to the main contacts
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H73/00—Protective overload circuit-breaking switches in which excess current opens the contacts by automatic release of mechanical energy stored by previous operation of a hand reset mechanism
    • H01H73/48—Protective overload circuit-breaking switches in which excess current opens the contacts by automatic release of mechanical energy stored by previous operation of a hand reset mechanism having both electrothermal and electromagnetic automatic release
    • H01H73/56—Protective overload circuit-breaking switches in which excess current opens the contacts by automatic release of mechanical energy stored by previous operation of a hand reset mechanism having both electrothermal and electromagnetic automatic release reset by push-button, pull-knob or slide

Definitions

  • Such a switch includes a setting knob, a movable releasing knob adapted to move inside said setting knob and a yielding blade carrying the movable contact-piece and which is locked in its operative position by a locking lever pivotally carried by the setting knob which is locked in its turn by a catch at such a moment.
  • the releasing knob acts then directly on an upper extension'of the pivoting locking lever through the agency of a sloping surface formed on said knob.
  • the setting is controlled by a knob rigid with means, such as lateral arms'extending above the setting knobs' of the mechanisms controlling a number of associated circuit-breaking switches, the number of which is equal to that of the numberof circuits to be controlled simultaneously, while the release is controlled by a bar adapted to be shifted rectilinear-1y and transversely with reference to the associated circuit-breakers each of which is provided with its own control lever, holding its yielding contact-piece in its operative position and engaging said bar of which any shifting produced by one of said circuitbreakers is simultaneously transmitted to all the other circuit-breakers.
  • circuit-breaker should not be disturbed by the modifications in room temperature as long as said temperature ranges between -50 C. and +90 C. To this end, the circuit-breaker should be compensated against the action of temperature.
  • the appliance should allow a manual setting and release
  • My invention has for its object a multipo'lar circuitbrea'king switch adapted to be controlled manually and from a distance by an electric circuit.
  • FIG. 1 is a vertical cross-section of the appliance
  • FIG. 2 is a partial perspective view limited to the means correcting the duration of release and the member allow.- ing manual release;
  • FIG. 3 is a plan view of means for the general and individual adjustment of the bimetallic blade associated with the releasing bimetallic blade to compensate for the action of varying temperature;
  • FIGS. 4 and 5 are elevational views showing in two different positions the movable contact-piece adapted to signal or to control at a distance respectively the opening and the closing of the contact-making circuit-breaker;
  • FIG. 6 illustrates a modification of said arrangement wherein the signalling circuit is closed when the main contact piece'is closed
  • FIG. 7 is a perspective view showing a circuit-breaking block adapted to be removed from its pedestal F168.
  • FIG, 10 is a perspective view of a modification of the means adjusting the relative position of the compensating bimetallic blade with reference tothe other releasing bimetallic blade;
  • u e V FIGS. 11 and 12 are two different wiring diagrams for the remote control;
  • FIG. 13 is on a much larger scale, a longitudinal cross-section of the individual adjusting means for the position of the compensating bimetallic blade
  • FIGS. 14 and 15 are perspective views and a cross-sectional View through line 15-15 of FIG. 14' of the arrangement cf the small masses balancing the movable releasing bar. k
  • FIG. 1 it is apparent that the same pedestal 2 carries in juxtaposition three circuit-breaking mechanisms of a known type.- Said mechanisms housed in individual casings 3, 4 and 5 are separated firo'm one an other by the partitions 7 and 8 arranged in staggered formation with reference to the adjacent casings 3 and 5 respectively (FIG. 1) so as to provide long lines of leak and to avoid any arcing at an altitude corresponding to a pressure of the mercury column approximating 50 mm. or above.
  • Each of the insulating casings 3, 4 and 5 housing the corresponding mechanisms provides merely the passage of the coopcratig control knob, respectively 9, 10 and 11.
  • the position of the latter is controlled by the ceneral pusher knob 10 provided with two arms 14 and 15 extending perpendicularly to the axis of shifting of said pusher-knob with which said arms are integral while they extend at the same level as the latter.
  • circuit-breaker The operation of said circuit-breaker is as follows:
  • the contact-piece of the three elementary circuitbreaker mechanisms are engaged simultaneously by depressing the master knob 16 which slides coaxially with reference to the pusher-knob against the action of the spring 17 so as to transmit to the latter the thrust received by it through the agency of said spring 17 which is gauged with a view to compensating the antagonistic above.
  • a flap 101 revolvably carried by the trunnic'ns 47 and 48 is rigid at its lower end with a spring 102 to which are secured the bimetallic blade 34 and also a compensating bimetallic blade 51 which cannot be replaced in the present case by a spring.
  • Atail-piece 104 on said flap 101 carries a screw 105 the end of which engages the flap 10 1 carrying the bimetallic blade 34.
  • the spring 39' returns then the small bar 23 into its starting position so as to allow the reen gagement or resetting of the three mechanisms. 5 1
  • the three-phase circuit-breaking switch described hereinabove is provided with a single knob havinga double partto play, that of engaging and releasing by hand the switch.
  • FIG. 2 the manual operation is as follows: :a knob 41 passing through the insulating hood 6 carriesa coaxial rod 43 terminating at its lower end with a slope 44, adapted to urge forwardly a flap 45 which is thus caused to pivot in the direction of the arrow '46 round its trunnions 47 and 48 while carrying along with it the bimetallic blade 44 of which the free end 50-acts on the lever 19 (FIG. 1) so as to produce the release of the circuit breaker as disclosed herein- The pusher-knob 41 is urged back into its inoperative position by the spring blade .51 which shifts rearwardly the flap 45 in the direction of the arrow 52.
  • the spring blade 51 urges the flap 45 rearwardly against the screw-53 and byrotating the signalling meming extent the screw 105 into the tail-piece 104, it is therefore possible to deform the flap 101 and to obtain a more or less considerable shifting of the free end 50' of the bimetallic blade 34, with reference to the compensating bimetallic blade 51.
  • the multipolar circuit-breaker is to operate in premises inwhich the temperature range between 30 C. and C., it is necessary to provide for compensation against temperature modifications in order to obtain an 57 and 58 (FIG. 3) inside which extends longitudinally an insulating rod 66 revolving inside said screws with slight friction (FIG. 13).
  • the three screws 56,57 and 5-8 include each a fiat head 59, till and 61 (FIG. 3) provided with recesses 6M perpendicular to the axis of its threaded section, said heads being slightly clamped be tween two partitions 5-6, 4-8 or 7--3 in order to provide a slight friction.
  • the screws 56, 57 and 58 threadedly engage the bimetallic blades 63', 64 and 65 respectively and it is readily apparent that by holding fast to the insulating rod 66, it is possible to act individually on the relative position of each bimetallic blade by rotating the corresponding screw 56, 5-7 or 58 in the desired direction by means of a stem engaging one of the recesses 60a in the head of the screw to be operated.
  • the general adjustment of the blades is obtained by turning the head of the screw 67 which is rigid with the insulating rod 66.v V
  • the mechanism of at least one of the elementary circuit-breakers may carry contact-pieces of the type illustrated in FIGS. 4 to 6.
  • the same contactcarrying blade 69 is illustrated in FIG. 5- in its set position with the contact-pieces 71and 72 open.
  • FIG. 7 The arrangements resorted to for providing a circuitbreaker which is removable with reference to its pedestal are illustrated in FIG. 7 where the pedestal 75 shows only three apparent contact-pieces, the other contact-pieces being arranged similarly at the other end of the pedestal Y tact-pieces 81, 82 and 83 of the pedestal, the casing'76 sliding in the direction of the arrow 84.
  • Such multipolar or merely unipolar circuit-breakers may also be provided with remote electric control means.
  • a housing 85 (FIGS. 8 and 9') inside which are positioned:
  • hal-f-annuli 89 and 90 made of the same metal as the half-annuli 86 and 87, said half-annuli 89 and 90 being carried by a movable carrier 91 adapted to slide inside said housing 85, which carrier 91 is rigid with the rod 92 controlling the pusher-knob 93.
  • the winding 88 When the winding 88 is energized by an impulse'of electric current, the magnetic field thus produced attracts the movable half-annuli 89 and 90, so that they sink into contact with the stationary half-annuli 86 and 87. During this movement, the carrier 91 of the movable halfannuli draws along with its the pusher-knob controlling rod 92, so as to provide for theclosing of the switch constituted by the contact-pieces 94 and 94d.
  • the periphery of the movable carrier 91 may be provided with a packing 95 of leather or the like material matching the outline of the carrier in the same manner as the packing provided for a pump piston.
  • the circuitbreaker inoludes a further contactepiece of the type described with reference to FIGS. 4 to 6.
  • the winding 88 is energized, controls the contact-pieces of the circuit-breaker 110 and, in particul-ar, the contact-piece 114.
  • the winding 88 continues being energized, even after the opening of the switch 199 through the connections 115 and the switch 116 which is held permanently closed by the spring 117.
  • the multip'ol'ar circuit-breaker described is an apparatus of a reduced weight occupying a very reduced volume. its adjustment is very accurate, even the case of very small intensities. Its operation cannot be influenced by room ternpenature as long as the latter ranges between -30 C. and
  • my improved circuit-breaker may be released and set manually :or electrically even tfrorn a distance and it includes to this end, if desired, means for signalling at a distance the location of its contact-pieces.
  • the operation of the appliance is [highly satisfactory when it is adapted to control stationary plants, the case may not be the same when it is subjected directly or through the agency of its pedestal to sudden shocks or displacements.
  • the inertia of the small bar 23 may lead to a transverse shifting of the latter with reference to its pedestal and this may lead in its turn to an untimely release of the contactpieces of the circuit breaker as a consequence of the movement imparted by said small bar 23 to the lever ends 25, 22 land 26 engaging it.
  • compensating weights are fitted in the following manner: round a stud 120 carried by the pedestal 2 .of the (appliance, there is pivotally secured Y which the pedestal 2 of the apparatus is subjected to a shock, the stud rigid with said pedestal transmits the shocks to the lever 1Z1 carrying the weight 123 and .engaging the small bar 23.
  • the weights corresponding, on the one hand, to the small bar 23 and lever ends 25, 22, 26 engaging it and, l
  • the balanced system is not disturbed by the shocks and tollows as a unit tlhe'movement of the pedestal 2, and the absence oi any shifiting of the :bar 23 with reference to said pedestal 2 cuts out the risk of any release.
  • the invention is not limited to the sole embodiment of the three-pole circuit-breaker which has been described herei-nabove and it covers all the modifications thereof, whatever may be the number of separate elementary oircuitbre'akers associated inside the same casing and whatever maybe the detail structure of the means serving for the simultaneous transmission to the difierent pusher-knobs providing for the engagement of the circuit-breaker of the thrust to which the main knob is subjected or for shifting simultaneously the releasing levers when one of them has been released.
  • a 'mult-ipol ar circuitsbreaker comprising a plurality of juxtaposed elementary circuit-breakers including each an elementary control knob, a yielding contactsnaking blade adapted to be set by the control knob in its operative position, a lever pivot-ally secured to said knob and holding the contactanaking blade in its controlled operative position, and temperature-sensitive means releasing said lever, a common bar extending across the lower ends of all the levers and engaging said ends to ensure their simultaneous rocking upon release of one of them to provide the simultaneous release of all the elementary circuit-breakers, a casing enclosing all the elementary circuit-breakers and common bar means including a Montof juxtaposed elementary cinouit-breakers including each an elementary control knob, a yielding contact-making blade adapted to be set by the control knob in its operative position, a lever pivotally secured to said knob and holding the contact rnaking blade in its controlled operative posit-ion, and an electromagnet including a Winding and an armature controlled by
  • a multipolar circuit-breaker comprising a plurality of juxtaposed elementary circuit-breakers including each an elementary control knob, a yielding contact-making blalde adapted to be set by the control knob in its operative position, a lever pivotally secured to said knob ment of the two sections, complete adjacent annuli, the
  • a multipolar circuit-breaker comprising a plurality of juxtaposed elementary circuit-breakers including each an'elementary control knob, a yielding contact-making blade adapted to be set by the control knob in its operative position, a lever pivotally secured to said knob and holding the contact-making blade in its controlled operative position, a magnetic circuit including a stationary section and a section rigid with the control knob and adapted to move towards and away from the stationary section, each section being constituted by two adjacent half-annuli, the cooperating half-annuli in the two sections facing each other to form, upon engagement of the two sections, complete adjacent annul-i, the axes of which are parallel and perpendicular to the direction of movement of the movable section, a shockdamping packing along the periphery of one of the sec:

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Breakers (AREA)
  • Switch Cases, Indication, And Locking (AREA)
US102064A 1960-04-13 1961-04-10 Multipolar circuit maker and breaker Expired - Lifetime US3102933A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR40351A FR1254168A (fr) 1960-04-13 1960-04-13 Contacteur-disjoncteur multipolaire

Publications (1)

Publication Number Publication Date
US3102933A true US3102933A (en) 1963-09-03

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Family Applications (1)

Application Number Title Priority Date Filing Date
US102064A Expired - Lifetime US3102933A (en) 1960-04-13 1961-04-10 Multipolar circuit maker and breaker

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US (1) US3102933A (de)
DE (1) DE1413683A1 (de)
FR (1) FR1254168A (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3211874A (en) * 1961-11-14 1965-10-12 Sigma Instruments Inc Switch construction having improved contact and bracket assembly
US4713635A (en) * 1986-07-01 1987-12-15 Westinghouse Electric Corp. Multi-phase circuit breaker with interphase barrier retention
US20120169451A1 (en) * 2010-12-30 2012-07-05 Brian Frederick Mooney Shape memory alloy actuated circuit breaker

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1058179A (en) * 1912-07-29 1913-04-08 Hart Mfg Co Switch.
DE643705C (de) * 1937-04-15 Kloeckner Kom Ges F Mehrpoliger thermischer Ausloeser
US2467653A (en) * 1944-02-16 1949-04-19 Berthier Emile Andre Electric cutout
US2808486A (en) * 1953-02-16 1957-10-01 Berthier Emile Andre Manually operable trip-free circuit breaker
US2813168A (en) * 1956-10-11 1957-11-12 Metals & Controls Corp Electrical switch
US2981812A (en) * 1958-07-31 1961-04-25 Gen Electric Circuit breaker

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE643705C (de) * 1937-04-15 Kloeckner Kom Ges F Mehrpoliger thermischer Ausloeser
US1058179A (en) * 1912-07-29 1913-04-08 Hart Mfg Co Switch.
US2467653A (en) * 1944-02-16 1949-04-19 Berthier Emile Andre Electric cutout
US2808486A (en) * 1953-02-16 1957-10-01 Berthier Emile Andre Manually operable trip-free circuit breaker
US2813168A (en) * 1956-10-11 1957-11-12 Metals & Controls Corp Electrical switch
US2981812A (en) * 1958-07-31 1961-04-25 Gen Electric Circuit breaker

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3211874A (en) * 1961-11-14 1965-10-12 Sigma Instruments Inc Switch construction having improved contact and bracket assembly
US4713635A (en) * 1986-07-01 1987-12-15 Westinghouse Electric Corp. Multi-phase circuit breaker with interphase barrier retention
AU596418B2 (en) * 1986-07-01 1990-05-03 Westinghouse Electric Corporation Multi-phase circuit breaker with interphase barrier retention
US20120169451A1 (en) * 2010-12-30 2012-07-05 Brian Frederick Mooney Shape memory alloy actuated circuit breaker
US8830026B2 (en) * 2010-12-30 2014-09-09 General Electric Company Shape memory alloy actuated circuit breaker

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Publication number Publication date
FR1254168A (fr) 1961-02-17
DE1413683A1 (de) 1968-10-03

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