EP0567416B1 - Mechanische Verriegelungsvorrichtung von zwei Schaltern mit Isolierstoff-Formgehäuse - Google Patents

Mechanische Verriegelungsvorrichtung von zwei Schaltern mit Isolierstoff-Formgehäuse Download PDF

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Publication number
EP0567416B1
EP0567416B1 EP19930420160 EP93420160A EP0567416B1 EP 0567416 B1 EP0567416 B1 EP 0567416B1 EP 19930420160 EP19930420160 EP 19930420160 EP 93420160 A EP93420160 A EP 93420160A EP 0567416 B1 EP0567416 B1 EP 0567416B1
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EP
European Patent Office
Prior art keywords
circuit breaker
transmission lever
push
button
crank
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
EP19930420160
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English (en)
French (fr)
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EP0567416A1 (de
Inventor
Marc Bur
Jean-Pierre Nebon
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.)
Schneider Electric SE
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Schneider Electric SE
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Publication date
Application filed by Schneider Electric SE filed Critical Schneider Electric SE
Publication of EP0567416A1 publication Critical patent/EP0567416A1/de
Application granted granted Critical
Publication of EP0567416B1 publication Critical patent/EP0567416B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • 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
    • H01H9/20—Interlocking, locking, or latching mechanisms
    • H01H9/26—Interlocking, locking, or latching mechanisms for interlocking two or more switches
    • 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
    • H01H71/126—Automatic release mechanisms with or without manual release actuated by dismounting of circuit breaker or removal of part of circuit breaker

Definitions

  • the invention relates to a mechanical interlocking device for a first and a second molded case circuit breaker to prevent simultaneous closing of the two circuit breakers, each circuit breaker having a pushbutton with two stable positions, a first position representative of the circuit breaker open position and a second position representative of the circuit breaker closed position and a transmission lever with two stable positions, a first inactive position and a second circuit breaker tripping control position.
  • An interlocking device of the type mentioned is used in particular in source inverters, allowing the supply of an installation by one or the other of the sources. Interlocking can be electrical when the circuit breakers are remote-controlled or mechanical when they are placed side by side on a plate. Mechanical interlocks are made using rods connecting the control handles and these rod sets are complicated and of uncertain reliability. They depend on the type of order.
  • Document US-A-4,286,242 describes an interlocking system for open type circuit breakers; the mechanism of this type of circuit breaker has two latchings, namely a closing latch and an opening latch and can therefore occupy four different states, respectively open disarmed, open armed, closed disarmed and closed armed. Consequently, during the closing of one of the two circuit breakers, the interlocking has the effect of acting on the opening latching of the other circuit breaker, this action being followed by effect only if the other circuit breaker is effectively closed.
  • circuit breaker test operations associated with this type of interlocking mechanism carried out after dismantling the circuit breakers, require the transmission lever to be blocked in order to authorize the closing of the circuit breaker.
  • the present invention aims to allow the realization of a simple and reliable mechanical interlocking device, for molded case circuit breakers, regardless of their direct, rotary or electric control mode, and their fixing, fixed or withdrawable.
  • the interlocking mechanism is transferred to the rear face of the molded boxes and to the plate on which these rear faces are fixed.
  • the transmission by rotary bars, in particular by coaxial rotary bars, one of which is tubular, is particularly robust and reliable, and the connection with the circuit breakers takes place automatically when the latter are fixed on the plate.
  • the pushers representative of the position of the circuit breaker contacts are interposed between the contact carrier bar or between a crank secured to this bar and receiving cranks fixed to the connecting bars extending between the two circuit breakers.
  • These bars carry at their opposite end rotary cams, capable of engaging a rocker lever actuating a transmission lever which displaces the latching or the tripping bar of the tripping device of the circuit breaker.
  • the mechanical connection bars are mounted on bearings integral with the plate, and these bars are biased by springs in a direction holding the receiving cranks in support of the pushers.
  • the elements of the interlocking device, associated directly with the circuit breaker, in this case, the pushers and the transmission levers with their rocker can be mounted on any type of circuit breaker, and in a particularly simple manner. These elements can be used for actuating other auxiliaries, in particular in a pre-trip device described in the jointly filed patent application.
  • Figure 1 is a schematic elevational view in axial section of a circuit breaker according to the invention, shown in the withdrawn position.
  • Figures 2, 3 and 4 are views similar to that of Figure 1, showing respectively the circuit breaker during racking-in, in the plugged-in position, and during racking-out.
  • Figure 5 is an elevational view in axial section of an interlocking device of two circuit breakers, a part surrounded by a broken line being shown in the position corresponding to the associated circuit breaker.
  • Figure 6 is a view similar to that of Figure 5, showing the interlocking device in the release position.
  • Figure 7 is a perspective view of a mounting plate of the two circuit breakers equipped with an interlocking device, only the boxes of the circuit breakers being partially shown.
  • Figure 8 is a view similar to that of Figure 7, in which one of the parts of the plate is assumed to be removed.
  • FIG. 9 is an enlarged view of part of FIG. 8.
  • Figure 10 is a sectional view of a pole of the circuit breaker and its control mechanism.
  • a withdrawable circuit breaker consists of a fixed part 10 in the form of a base or a frame, and of a movable part 11 forming the circuit breaker proper, in this case a molded case circuit breaker 12, of which only the base is represented.
  • the circuit breaker 11 of a standard type comprises a bar 53 for supporting the movable contacts 52 of the different poles, to which bar is associated a control crank 13 coupled to a toggle switch 14 of a mechanism 15 for opening and closing the circuit breaker .
  • a pivoting handle 16 controls the manual opening and closing of the circuit breaker by means of an anchored spring 17, on the one hand to the axis 18 of the toggle joint, and on the other hand to the handle 16.
  • the opposite end of the toggle joint 14 is articulated to a hook 19, one of the ends of which is pivotally mounted on a fixed axis 20 and the opposite end of which cooperates with a latch 21.
  • the hook 19 exerts on the locking surface of latch 21 a force in the unlocking direction, by pivoting anti-clockwise, latch 21 being held in the locking position by a pivoting latch 22.
  • the circuit breaker 11 further comprises a trip device (not shown) which actuates the latch 22 during a fault to cause the automatic opening of the circuit breaker by releasing the latch 21 and unlocking of the hook 19.
  • FIG. 1 shows the mechanism 15 in the closed position of the circuit breaker, the opening of the latter being able to be controlled manually by pivoting the handle 16 anticlockwise, or by tripping triggered by the trigger.
  • each pin 24 of cylindrical shape comes to be plugged into a fixed racking contact constituted by a tulip 26.
  • the base 10 is constituted by an insulating plate having cells 27 for housing tulips 26 oriented in the direction of the rear face 25 of the molded housing 12.
  • the tulips 26 are extended in the direction of this rear face 25, by insulating guide sockets 28, which cooperate with the pins 24 to position and guide the circuit breaker 11 during the racking-in and racking-out race. .
  • the circuit breaker 11 is equipped with a pre-trip system constituted on the one hand by a fixed cam 29, carried by the base 10, and on the other hand by a system integral with the mobile part consisting of a support bracket 32, fixed to the rear face 25 of the housing 12, which square carries a rocker arm 31, one of the arms 33 of which is articulated to a transmission lever 30.
  • the rocker arm 31 is pivotally mounted on an axis 34, integral with the bracket 32 , and the opposite arm 35 of the rocker arm 31 carries a pin 36 capable of cooperating with the fixed cam 29.
  • the transmission lever 30 passes through an orifice 37 on the rear face 25, and a passage 38 formed inside the housing 12 for end with a face 39 actuation of the latching 22.
  • the fixed cam 29, the rocker arm 31 and the transmission lever 30 extend in a plane parallel to the racking-in and racking-out direction of the circuit breaker 11, which direction is perpendicular to the face rear 25.
  • the arm 35 carrying the pin 36 of the rocker arm 31 extends substantially in this direction perpendicular to the rear face 25, while the arm 33 articulated to the transmission lever 30 is substantially perpendicular.
  • the profile 40 of the fixed cam has a slot which cooperates with the pin 36 to move the latter during a racking-in movement of the circuit breaker 11, to the left in FIG. 1, then to maintain this pin in the deflected position before releasing it at the end of the racking-in stroke.
  • the device works as follows:
  • the circuit breaker being open, it can be plugged in without any risk, and at the end of the racking-in stroke, the pin 36 crosses the slot 40 and is again released from the fixed cam 29 to return to the initial position of movement to the right.
  • the transmission lever 30 is inactive, and the circuit breaker can be opened or closed normally by actuation of the handle 16, FIG. 3 showing the circuit breaker connected in the closed position.
  • Withdrawal is effected by a reverse operation, and firstly the pin 36 engages the cam 29 and is moved to the left in FIG. 4, to actuate the transmission lever 30 and cause tripping of the circuit breaker 11, by release of the latching 22 and of the latch 21.
  • the pre-trip device can be associated with a standard circuit breaker, by simple fixing of the support 32, with the rocker arm 31 and the transmission lever 30.
  • the pre-trip system is particularly simple and it avoids any false operation.
  • FIGS. 5 to 9 which illustrate an interlocking device, the same reference numbers are used to designate parts similar or identical to those of the circuit breaker illustrated in FIGS. 1 to 4, the reference numbers relating to the first circuit breaker being assigned of an index.
  • a first circuit breaker 11 ′ and a second circuit breaker 11, of which only the molded housings 12, 12 ′ are shown in FIG. 7, are fixed to a plate 41, side by side by any suitable means.
  • Each circuit breaker is equipped with a pre-trip device similar to that described above, and comprising a support 32 with a rocker arm 31 and a transmission lever 30.
  • each circuit breaker 11,11 ' is further equipped with a push button 43,43', one of the ends of which is articulated to the crank 13, and the other end of which projects from the rear face 25, and penetrates into the orifices 42 of the plate 41.
  • the position of the pusher 43 is representative of that of the contacts 52 of the circuit breaker, in this case opening and closing of the circuit breaker.
  • the plate 41 is fixed at a small distance to a parallel base plate 44 so as to provide an interval, between the plate 41 and the base plate 44, receiving a mechanical connection system between the two circuit breakers 11, 11 '.
  • This connection system consists of two coaxial rotary bars, at least one of which in the form of a tube 45 surrounds the other in the form of an axis 46.
  • the axis 46 is longer than the tube 45, and the parts which protrude on either side of this tube 45 are rotatably mounted in bearings 47 fixed to the base plate 44.
  • the axis 46 pivots freely in the bearings 47, and the tube 45 pivots freely on the axis 46.
  • the tube 45 and the axis 46 extend transversely to the circuit breakers 11, 11 'and respectively constitute a first and a second mechanical connection between these two circuit breakers.
  • the tube 45 carries at one of its ends opposite the orifice 42 'of the plate 41, a first receiving crank 48' and at the opposite end, opposite the orifice 42, a second rotary cam 49.
  • the axis 46 carries, opposite the orifice 42 ', a first rotary cam 49', and opposite the orifice 42 a second receiving crank 48.
  • the receiving cranks 48 , 48 ' have a cell housing the end of the pushers 43,43 'and it is easy to see that a movement of the pushbutton 43' of the first circuit breaker 11 'causes the displacement of the associated receiving crank 48', and a pivoting of the tube 45, while that the pusher 43 of the second circuit breaker 11 actuates the second receiving crank 48 and causes pivoting of the axis 46.
  • the rotary cams 49, 49 ′ cooperate with the associated rockers 31 to move the transmission levers 30 and bring them into position inactive, or in the active tripping position of the corresponding circuit breaker.
  • the axis 46 and the tube 45 are biased in rotation anticlockwise in FIG.
  • the return springs 50 so as to maintain the receiving cranks 48, 48 ′ in support of the associated pushers 43 , 43 '.
  • the return springs 50 are arranged in line with the bearings 47, the tube 45 then being extended by a sheath 51.
  • the position of the receiving cranks 48, 48 ′ is representative of the position of the breaking contacts 52 of the associated circuit breaker, and in position when these contacts are closed, the receiving crank moves the associated rotary cam to a position for triggering the transmission lever 30.
  • FIGS. 5 and 6 in which the parts 13 ′, 43 ′ and 48 ′ surrounded by a broken line are shown in the position they occupy in the first circuit breaker 11 ', while the other parts are shown in the position occupied in the second circuit breaker 11.
  • the first circuit breaker 11' is open and the pusher 43 'is held by the crank 13', in a first position noted in FIG. 5.
  • the mechanical connection constituted by the first receiving crank 48 ′, the tube 45 and the second rotary cam 49 makes this first position of the pusher 43 ′ correspond to a first position of the second rotary cam 49 releasing the associated rocker arm 31 and the transmission lever 30 placed in a first inactive position, allowing the normal opening and closing of the second circuit breaker 11.
  • the crank 13' moves the pusher 43 'to the second lowered position by causing the rotation of the tube 45 clockwise to bring the second rotary cam 49 in a second active position for engaging the rocker arm 31 and sliding up the transmission lever 30 towards a release position actuating the latch 22 to release the latch 21.
  • the second mechanical connection which comprises the axis 46 ensures in a way identical a connection between the circuit breaker 11 and 11 ', so that in the open position of the second circuit breaker 11, the first circuit breaker 11' can be opened or closed, but on the other hand, in the closed position of the second circuit breaker 11, the first circuit breaker 11 'must be open.
  • This interlocking device is particularly simple, and it can be added to standard circuit breakers, without any particular constraint.
  • the rocker arm 31 and the transmission lever 30 can be used for other functions, in particular for the pre-trip function described with reference to FIGS. 1 to 4.
  • the interlocking device is advantageously used for circuit breakers of the type represented in FIG. 10, forming inter alia the subject of the aforementioned European patent application, in which the breaking contacts 52 are arranged in contact bridge, mounted floating on a bar or a section of bar 53, integral with the cranks 13 of the mechanism 15.
  • the hook 19 has on its edge a reset profile 54 arranged so as to make the reset position of the handle 16 coincide with its open position .
  • An open circuit breaker is thus always ready to be closed, even if the associated circuit breaker has transmitted tripping orders by actuation of the transmission lever 30.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Breakers (AREA)

Claims (7)

  1. Elektrische Vorrichtung bestehend aus:
    - einem ersten (11') und einem zweiten (11) Leistungsschalter mit Isolierstoffgehäuse (12), die auf der Vorderseite einer Montageplatte (41) nebeneinander angeordnet sind, wobei jeder Leistungsschalter folgende Teile umfaßt:
    - einen Mechanismus, bestehend aus einer Verriegelungsvorrichtung mit einem Riegel (21) und einer Verrastung (22) sowie aus einem Kipphebel, der dazu dient, eine erste stabile Einschaltstellung des Leistungsschalters, eine zweite stabile Ausschaltstellung des Leistungsschalters und eine Auslöse-Zwischenstellung mit aufgrund eines Auslösebefehls entspanntem Mechanismus einzunehmen;
    - einen Schieber (43, 43') mit zwei stabilen Stellungen, und zwar einer, die Ausschaltstellung des Leistungsschalters abbildenden ersten Stellung und einer, die Einschaltstellung des Leistungsschalters abbildenden zweiten Stellung, wobei der genannte Schieber aus den Rückseiten der Isolierstoffgehäuse heraussteht, sowie
    - einen Übertragungshebel (30) mit zwei stabilen Stellungen, und zwar einer inaktiven ersten Stellung und einer, der Auslösebetätigung der Verriegelungsvorrichtung entsprechenden zweiten Stellung, wobei der genannte Übertragungshebel aus den Rückseiten der Isolierstoffgehäuse heraussteht;
    - einem, auf der Rückseite der Montageplatte (41) montierten Mechanismus zur gegenseitigen Verriegelung, der dazu dient, ein gleichzeitiges Einschalten der beiden Leistungsschalter (11, 11') zu verhindern und folgende Teile umfaßt:
    - eine erste Drehstange (45), die an einem ihrer Enden über einen ersten Hebel (48') mit dem Schieber (43') des ersten Leistungsschalters (11') und an ihrem anderen Ende mit dem Übertragungshebel (30) des zweiten Leistungsschalters (11) zusammenwirkt, um diesen Übertragungshebel (30) in die genannte zweite Stellung zu überführen, wenn sich der genannte Schieber (43') des ersten Leistungsschalters (11') in der zweiten Stellung befindet,
    - eine zweite Drehstange (46), die an einem ihrer Enden über einen zweiten Hebel (48) mit dem Schieber (43) des zweiten Leistungsschalters (11) und an ihrem anderen Ende mit dem Übertragungshebel (30') des ersten Leistungsschalters (11') zusammenwirkt, um diesen Übertragungshebel (30') in die genannte zweite Stellung zu überführen, wenn sich der Schieber (43) des zweiten Leistungsschalters (11) in der zweiten Stellung befindet,
    dadurch gekennzeichnet, daß jede der genannten ersten und zweiten Drehstangen (45, 46) eine Steuerkurve (49, 49') aufweist, die dazu dient, über eine Wippe (31) mit dem zugehörigen Übertragungshebel (30, 30') zusammenzuwirken, wobei die Wippe (31) schwenkbar auf einer, fest mit dem Isolierstoffgehäuse verbundenen Achse (34) gelagert und an den genannten zugehörigen Übertragungshebel angelenkt ist.
  2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Hebel (48, 48') als Auflagehebel ausgebildet sind, die eine angepaßte Vertiefung zur Aufnahme des Endes des zugehörigen Schiebers aufweisen.
  3. Vorrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die beiden Drehstangen (45, 46) koaxial angeordnet sind, wobei mindestens eine (45) der Stangen die andere (46) rohrförmig umgibt.
  4. Vorrichtung nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß der Hebel (48') der ersten Stange (45) annähernd in der gleichen Ebene liegt wie die drehbare Steuerkurve (49') der zweiten Stange (46) und umgekehrt.
  5. Vorrichtung nach irgendeinem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Drehstangen drehbar auf der Montageplatte (41) gelagert sind und durch Federn (50) in Richtung einer Führung der Hebel (48, 48') gegen die Schieber (43, 43') beaufschlagt werden.
  6. Vorrichtung nach irgendeinem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß der Schieber (43, 43') zwischen den Hebel (48, 48') und die Trägerwelle (53) der Kontakte (52) bzw. einen biegesteif an der Welle (53) befestigten Hebel (13) eingesetzt ist.
  7. Vorrichtung nach irgendeinem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die genannten Leistungsschalter als steckbare Leistungsschalter mit Steckkontaktstiften (24) ausgeführt sind, die dazu dienen, mit fest mit der genannten Montageplatte verbundenen, feststehenden Steckkontakten (26) zusammenzuwirken, und daß jede Wippe (31) einen Finger (36) aufweist, der dazu dient, mit einer, fest mit der Montageplatte (41) verbundenen, ortsfesten Steuerkurve (29) zusammenzuwirken, derart daß die steckbaren Leistungsschalter während der Einsteck- bzw. Abziehhandlung vorausgelöst werden.
EP19930420160 1992-04-23 1993-04-15 Mechanische Verriegelungsvorrichtung von zwei Schaltern mit Isolierstoff-Formgehäuse Expired - Lifetime EP0567416B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9205138 1992-04-23
FR9205138A FR2690560B1 (fr) 1992-04-23 1992-04-23 Dispositif d'interverrouillage mecanique de deux disjoncteurs a boitier moule.

Publications (2)

Publication Number Publication Date
EP0567416A1 EP0567416A1 (de) 1993-10-27
EP0567416B1 true EP0567416B1 (de) 1997-07-16

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EP19930420160 Expired - Lifetime EP0567416B1 (de) 1992-04-23 1993-04-15 Mechanische Verriegelungsvorrichtung von zwei Schaltern mit Isolierstoff-Formgehäuse

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Country Link
EP (1) EP0567416B1 (de)
DE (1) DE69312154T2 (de)
ES (1) ES2105182T3 (de)
FR (1) FR2690560B1 (de)

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DE102011006830A1 (de) * 2011-04-06 2012-10-11 Siemens Aktiengesellschaft Anordnung mit einem Schalter, insbesondere mit einem Niederspannungsleistungsschalter
CN106207829A (zh) * 2015-04-29 2016-12-07 江苏中自电气技术有限公司 一种开关柜新型二次插连锁系统
CN107610960B (zh) * 2017-09-27 2020-01-17 无锡凯绎科技有限公司 电操互锁装置

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Also Published As

Publication number Publication date
DE69312154D1 (de) 1997-08-21
ES2105182T3 (es) 1997-10-16
FR2690560B1 (fr) 1997-05-09
EP0567416A1 (de) 1993-10-27
FR2690560A1 (fr) 1993-10-29
DE69312154T2 (de) 1998-01-02

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