EP0034966B1 - Commande électrique d'un disjoncteur basse tension - Google Patents

Commande électrique d'un disjoncteur basse tension Download PDF

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Publication number
EP0034966B1
EP0034966B1 EP81400198A EP81400198A EP0034966B1 EP 0034966 B1 EP0034966 B1 EP 0034966B1 EP 81400198 A EP81400198 A EP 81400198A EP 81400198 A EP81400198 A EP 81400198A EP 0034966 B1 EP0034966 B1 EP 0034966B1
Authority
EP
European Patent Office
Prior art keywords
crank
circuit breaker
link
electric control
lever
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
EP81400198A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0034966A1 (fr
Inventor
Robert Morel
Louis Barbara
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.)
Merlin Gerin SA
Original Assignee
Merlin Gerin 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 Merlin Gerin SA filed Critical Merlin Gerin SA
Publication of EP0034966A1 publication Critical patent/EP0034966A1/fr
Application granted granted Critical
Publication of EP0034966B1 publication Critical patent/EP0034966B1/fr
Expired legal-status Critical Current

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Classifications

    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/32—Driving mechanisms, i.e. for transmitting driving force to the contacts
    • H01H3/40—Driving mechanisms, i.e. for transmitting driving force to the contacts using friction, toothed, or screw-and-nut gearing

Definitions

  • the invention relates to an electrical control as described in the preamble of claim 1.
  • a known electrical control (US-A-3 794 943) of the kind mentioned, can be attached to the front face of a conventional circuit breaker with manual control to allow remote control of the circuit breaker.
  • This command makes use of the electric motor for opening and closing by reversing the running direction of the motor.
  • a finger cooperates unidirectionally with a stop for driving a sliding carriage secured to the handle of the circuit breaker.
  • an electric inverter changes the direction of rotation of the motor and the finger is detached from the stop while a spring pushes the lever to bring the finger to the opposite side.
  • This system is complicated and unreliable. Closing occurs at low speed, which prevents synchronized commands from several circuit breakers.
  • the object of the present invention is to remedy these drawbacks and to allow the realization of a simple and reliable remote control and it is achieved by the implementation of the combination claimed in claim 1.
  • the document FR-A-2 269 179 already describes a control of a switch in which a differential interposed between the operating handle and the contact control shaft allows a superimposition of a sudden opening movement by driving the differential cage by a spring. This device is unable to drive a handle of a molded case circuit breaker and to provide remote opening control.
  • the documents FR-A-704273 and DE-C-681221 relate to mechanisms for actuating electrical devices by an electric motor whose speed is reduced by a differential, which cannot be used for the remote control of a joystick a circuit breaker.
  • the differential mechanism combined with the connecting rod-crank system allows the addition of the remote control function without modification of the circuit breaker by simple and compact means.
  • an oscillating manual control lever constitutes at the same time an indicator for the position of the contacts of the circuit breaker, this lever being mechanically connected to the handle of the circuit breaker and faithfully reproducing the position of the handle.
  • An elastic link inserted in the movement transmission chain between the link coupled to the electric control crank and the handle authorizes an overtravel of the electric control ensuring the movement of the lever at the end of its travel.
  • the electrical control is automatically disengaged unidirectionally in the two normal positions of the circuit breaker, in this case in the open position and in the closed position so as not to hamper any manual control by actuation of the oscillating control lever.
  • the movement of the handle is directly derived from that of the control lever, while for closing, energy from the spring armed with the electric control is used to move the handle to the closed position.
  • the alignment in the open position is achieved by power supply contacts of the electric control to bring the latter in the open position, to reset the closing spring.
  • Any manual control implies a prior movement of a drawer giving access to the control lever and switching off the electric control. Any interference of the two commands is therefore any false operation is thus excluded.
  • Resetting following tripping on a circuit breaker fault is carried out either manually by moving the control lever, or electrically, the tripped position being detected by a contact for switching on a reset circuit.
  • the crank of the electrical control is rigidly fixed or shaped as a cam having a nose capable of cooperating with the hooking means to maintain the crank in the armed position.
  • the cam further cooperates with the locking of the planet carrier plate so as to release this plate after the shift in crank opening of the crankpin and before the nose comes into abutment on the coupling, the motor then being automatically disengaged. In the closed position of the crank the motor is again engaged.
  • the same cam controls a change-over contact alternately switching on the supply to the motor of the electric control and the supply of an electromagnet for releasing the coupling of the crank.
  • a block 10 of an electrical control is attached and fixed to the front face 12 of a molded case of a low-voltage electric circuit breaker of which only the handle or operating handle 14 is shown in FIG.
  • standard type circuit breaker can be a circuit breaker commercially known as Compact, the mechanism of which is for example described in document FR-A-2 071 256.
  • This toggle mechanism for controlling the contacts of the circuit breaker is actuated by lever 14 and can occupy different positions translated by corresponding positions of the handle 14, in this case a position F for closing the circuit breaker, a position O for opening the circuit breaker, an intermediate position OD for opening on tripping of the circuit breaker and a position R for resetting at following a trip.
  • the three positions cited first O, F, OD, are stable positions of the lever 14, two other intermediate positions PMF of closing dead center and PMO of opening dead center being identified in FIG. 1. These intermediate positions PMF and PMO correspond to passages in neutral of the toggle mechanism, the crossing of which corresponds to a continued action generated by the springs of the mechanism.
  • Such circuit breakers are well known and there is no need to describe them in detail.
  • the handle 14 is engaged in a buttonhole 16 carried by the end of an oscillating arm 18 mounted for free rotation on a shaft 20 extending perpendicular to the front face 12.
  • the buttonhole 16 is shaped to couple the handle 14 without play to the arm 18 and transform the reciprocating movement of the lever 14 into a rotary or oscillating movement of the arm 18.
  • the deflection planes of the arm 18 and of the link 24 are parallel and the link 24 and the arm 18 are mechanically connected by an elastic connection comprising a spring 32 in the form of a hairpin embracing fingers 34 , 36, respectively carried by the link 24 and the arm 18.
  • the elastic connection 32, 34, 36 ensures a synchronous movement of the link 24 and the arm 18 while allowing a movement continued by deformation of the elastic connection, in particular at the end of the travel of the lever 14, the link 24 ensuring an overtravel ensuring the operation of the lever 14.
  • a manual control lever 38 On the rotary shaft 20 is also keyed a manual control lever 38 whose end 40 is accessible and visible on the front face 42 of the block 10.
  • the end 40 of the lever 38 is normally capped by a drawer 44 made of a transparent material capable of being pushed back inside a housing 46 against 'a spring (not shown), so as to release the end 40.
  • the lever 38 follows the movements of the arm 18, the end 40 faithfully representing the different positions of the lever 14 identified in Figure 1. In retracted position of the transparent drawer 44, the lever 38 can be actuated manually to control or actuate the lever 14 in the manner described below.
  • an electric motor 48 and a differential axis mechanism 92 for driving the crank 30.
  • the pinion 52 of the electric motor 48 meshes with a first sun gear 54 of the differential mechanism 50.
  • a satellite 56 rotatably mounted on a planet carrier plate 58, meshes on the one hand with the sun gear 54 and on the other hand with a second sun gear in the form of a crown 60 secured to a plate forming the crank 30.
  • a locking means 62 schematically represented by an arrow in FIG. 2, allows the planet carrier 58 to be locked in rotation and a hooking means 64, schematically represented by an arrow in FIG.
  • crank 30 allows the crown 60 crank 30 to be hooked in a cocked position as described in detail below with reference to Figures 3 to 7.
  • the crank 30 is subjected to the action of a tension spring 66 anchored on the one hand to the crank pin 28 and on the other hand at a fixed point 68.
  • the differential mechanism 50 constitutes a desmodromic connection between the motor 48 and the crank 30, the latter being driven in rotation by the motor 48.
  • the crown 60 In the unlocked position of the locking means 62, the crown 60 is disengaged from the motor 48 and is capable of carrying out a free rotational movement when the catch 64 is released, in particular under the action of the spring 66.
  • the rotation of the crank 30 generates an oscillating movement of the rod 24 which is transmitted by the elastic connection 32, 34, 36 to the arm 18 and to the lever 14.
  • the crown 60, crank 30 and associated attachment means 64 are described below, more particularly with reference to FIGS. 3 to 7.
  • a cam 70 whose edge cooperates with the attachment means 64.
  • the profile of the cam 70 comprises a first circular area 72 extending over a distance less than the half-periphery of the cam 70 and a second circular area 74 of diameter slightly smaller than that of the area 72 and extending over the other half-periphery of the cam 70.
  • the zones 72, 74 are connected by intermediate zones 76, 77.
  • the zone 76 has a hooking catch 78 in the form of a nose capable of coming into contact. support of a roller 80 carried by a latching lever 82 rotatably mounted on a pivot 84.
  • the lever 82 cooperates with a pivoting lock 86, biased in the locking position by a spring 88 and capable of being moved into a position inactive by an electromagnet 90 to against the spring 88.
  • the notch 78 is slightly inclined, so as to exert on the latching lever 82 a component tending to move this lever 82 towards the release position of the cam 70.
  • the crank pin 28 occupies a position beyond the opening dead center PMO corresponding to the opening position of the circuit breaker.
  • the characteristic positions of the cam 70, corresponding to the characteristic positions of the lever 14, are identified by the same symbols in FIG. 3.
  • the fork 26 of the rod 24 is asymmetrical and has an upper finger 93, in FIG.
  • the lock 86 can be actuated by the electromagnet 90 or by a mechanical control comprising a rocker arm 98, mounted for rotation on the pivot 84, one of the arms of which can be engaged by the finger 94 of the rod 24, and the other arm of which actuates the latch 86.
  • a spring 100 biases the latching lever 82 in the active latching position.
  • the attachment lever 82 carries a lug 102 (see FIG. 7), capable of cooperating with the periphery of the planet carrier plate 58, which has successive teeth 104.
  • the lug 102 and the teeth 104 constitute the locking means 62 capable of locking in rotation the planet carrier plate 58.
  • the lug 102 is in the active locking position when the roller 80 cooperates with the area 74 of the cam 70. This lug 102 is moved to the inactive position by pivoting the lever. hooking 82 in the clockwise direction in FIG. 7, when the roller 80 is engaged on the intermediate zone 76. The lug 102 is released before the support catch comes into abutment 78 on the roller 80. It is clear that the lug 102 is in the unlocked position during the travel of the roller 80 in the area 72 of the cam 70.
  • control according to the invention operates as follows:
  • crank pin 28 in support of the tooth 93 in its movement causes the rod 24, in the counterclockwise direction, which rotates via the elastic connection 32 , 34, 36, arm 18 and moves the joystick 14 in the closing direction of the circuit breaker.
  • the motor 48 is stopped and it is understood that the rotational movement of the crown 60 implies a corresponding rotation of the planet carrier plate 58, which rotates freely, the locking means 62 being inactive in this direction of rotation, indicated by the arrow on Figure 7.
  • the crank pin 28 and the rod 24 cross the dead center closing PMF and the extreme position of travel to come into the closed position F, shown in solid lines.
  • This closed position corresponds to an alignment of the point 68 for anchoring the spring 66, the crank pin 28 and the axis 92, the spring 66 being released.
  • the connecting rod 24 has caused the lever 14 to move, which, brought into the closed position F, causes the circuit breaker to close.
  • the overtravel of the link 24, authorized by the elastic connection 32, 34, 36, guarantees the movement of the lever 14 towards the closed position without requiring precise adjustment of the relative positions of the block 10 and the circuit breaker.
  • the roller 80 engages in the area 77 authorizing a pivoting of the latching lever 82 in the active position corresponding to an engagement of the lug 102 of the locking means 62.
  • This closing command is effective sudden, generally required for synchronized circuit breaker operations.
  • the electrical opening of the circuit breaker is controlled by the power supply to the motor 48, which drives the crank 30 by means of the differential mechanism 50.
  • the planet carrier plate 58 rotates in the counterclockwise direction, indicated by the arrow in broken line in FIG. 7, until a tooth 104 comes into abutment against the lug 102 locking the planet carrier plate 58.
  • the crown 60 is rotated clockwise in FIGS. 5 and 7, causing the spring 66 to be cocked.
  • the crank pin 28 in contact with the finger 94 of the fork 26 drives the link 24 towards the bottom in FIG. 5, crossing the break-in point of opening of the circuit breaker and subsequently the break-away point of the crank 30 to come to the open position, represented in FIG.
  • the cam 70 In the open position the cam 70 is immobilized by latching 64 in the active position. It should be noted that the roller 80 engages on the intermediate zone 76 at the end of the opening stroke, the profile of the cam 70 being arranged in such a way that the lug 102 is moved into the unlocking position just after passage from the neutral point of the crank 30 thus disengaging the motor 48, which can continue its rotation independently of the crank 30.
  • the spring 66 automatically brings the crank 30 and the cam 70 into the hooking position, shown in FIG. 3.
  • the lever 14 has of course followed the rod 24 in its movement causing the opening of the circuit breaker.
  • the cam 70 cooperates with a tongue 110 for controlling a change-over contact 112, the assembly being arranged in such a way that the change-over contact 112 is placed in the supply position of the motor 48 when the tongue 110 cooperates with the zone 74 of the cam 70, in particular in the closed position of the circuit breaker and during the opening stroke of the latter.
  • the reversing contact 112 is placed in the supply position of the electromagnet 90 during the stroke of the cam 70 bringing the tongue 110 into contact with the zone 72, in particular in the open position of the circuit breaker.
  • the change-over contact 112 selectively supplies either the supply circuit 114 of the motor 48, in which is inserted an opening control push button 116, or a supply circuit 118 of the electromagnet 90, in which a closing control push button 120 is inserted.
  • a self-supply contact 122 In parallel with the opening control push button 116 is connected a self-supply contact 122 controlled by a blade 124 cooperating with the cam 70 The self-supply contact 122 is arranged to maintain the supply to the motor 48 following an initiation of displacement of the cam 70, caused by a control of the push button 116.
  • the cam 70 is shown in the closed position and it can be seen that from the start of rotation of the cam 70 in the opening direction of the circuit breaker, the blade 124 engages on the zone 72 causing the closure in FIG. 6, for move the lock 86 to the release position of the acc rocking 64.
  • the roller 80 disappears and the spring 66 rotates the cam 70 and the associated crank 30 in the manner described above, causing the closing of the circuit breaker as for an electrical control.
  • the mechanism is in the closed position, shown in FIG. 5, ready for an electric opening control or for a manual control described below.
  • the manual opening control is achieved by a movement in the opposite direction of the lever 40, this movement being authorized by the escapement of the crank pin 28 of the finger 93 of the fork 26.
  • the link 24 and the arm 18 are rotated and move the handle 14 to the open position of the circuit breaker.
  • the mechanism of the electrical control remains inactive, the spring 66 remaining in the disarmed position, represented in FIG. 5.
  • An electrical control can then intervene only after a reset of the spring 66, which can be operated in the manner described below.
  • the lever 40 always represents the position of the lever 14 and constitutes an indicator of this position.
  • the handle 14 drives the link rod 24 and the lever 38 to the open tripped position OD, this movement being authorized by the disengagement of the electrical control due to the output of the crank pin 28 of the fork 26 (see figure 5).
  • the control according to the invention is equipped with safety devices preventing any false operation, in particular interference between the electric control and the manual control, and systems for reconciling the manual and electric controls, in particular for resetting the spring 66 following a manual opening, as described above.
  • the retractable drawer 44 actuates during the movement of the self-supply contact 122, which maintains the supply of the motor 48 throughout the opening stroke of the circuit breaker.
  • the self-supply contact 122 can also be actuated by an appendage 126 to the link 24 when the latter is in the open position. This actuation allows a resetting of the spring 66 and a matching of the electric control and the manual control following a manual opening control, problem mentioned above.
  • the cam 128 cooperates with a tilting support 130 carrying a tripping contact 132 actuated by a blade 134 capable of cooperating with the finger 94 of the fork 26.
  • the contact of tripping 132 is advantageously a change-over contact capable of switching off the opening push-button 116 by switching on a reset control button 136, and conversely switching off this reset button 136 by switching on the opening button 116.
  • the assembly is arranged in such a way that the support 130 is in a position allowing actuation of the contact 132 by the finger 94 only in the disarmed position of the spring 66, shown in FIG. 8. In the case of a triggering of the circuit breaker, the rod 24 is brought into the position shown in FIG. 8, the spring 66 being disarmed.

Landscapes

  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
  • Mechanisms For Operating Contacts (AREA)
  • Breakers (AREA)
EP81400198A 1980-02-25 1981-02-09 Commande électrique d'un disjoncteur basse tension Expired EP0034966B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8004141A FR2476906A1 (fr) 1980-02-25 1980-02-25 Commande electrique d'un disjoncteur basse tension
FR8004141 1980-02-25

Publications (2)

Publication Number Publication Date
EP0034966A1 EP0034966A1 (fr) 1981-09-02
EP0034966B1 true EP0034966B1 (fr) 1984-07-25

Family

ID=9238954

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81400198A Expired EP0034966B1 (fr) 1980-02-25 1981-02-09 Commande électrique d'un disjoncteur basse tension

Country Status (5)

Country Link
EP (1) EP0034966B1 (sv)
JP (1) JPS56134429A (sv)
DE (1) DE3164940D1 (sv)
ES (1) ES499400A0 (sv)
FR (1) FR2476906A1 (sv)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7872203B2 (en) 2008-08-14 2011-01-18 Cooper Technologies Company Dual voltage switch

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2654254B1 (fr) * 1989-11-06 1995-11-24 Merlin Gerin Dispositif de telecommande pour disjoncteur electrique.
DE19744457C1 (de) * 1997-10-08 1999-06-24 Siemens Ag Fernantrieb mit Motor für Leistungsschalter
ITRM20030021A1 (it) * 2003-01-22 2004-07-23 Bticino Spa Apparecchio elettrico con interruttore comandato a distanza.
US7432787B2 (en) 2005-12-15 2008-10-07 Cooper Technologies Company Motorized loadbreak switch control system and method
DE102008004917B4 (de) * 2008-01-18 2009-10-29 Moeller Gmbh Fernantrieb zur Betätigung eines elektrischen Schalters
US7920037B2 (en) 2008-05-08 2011-04-05 Cooper Technologies Company Fault interrupter and load break switch
US7952461B2 (en) 2008-05-08 2011-05-31 Cooper Technologies Company Sensor element for a fault interrupter and load break switch
US8004377B2 (en) 2008-05-08 2011-08-23 Cooper Technologies Company Indicator for a fault interrupter and load break switch
US7936541B2 (en) 2008-05-08 2011-05-03 Cooper Technologies Company Adjustable rating for a fault interrupter and load break switch
US8013263B2 (en) 2008-08-14 2011-09-06 Cooper Technologies Company Multi-deck transformer switch
US8153916B2 (en) 2008-08-14 2012-04-10 Cooper Technologies Company Tap changer switch
CN102239536B (zh) 2008-12-04 2015-03-11 库帕技术公司 低力低油脱扣机构

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR631912A (fr) * 1926-04-01 1927-12-29 App Teco Dispositif de déclenchement automatique
FR704273A (fr) * 1930-10-23 1931-05-16 Achille Bagnagatti Commande électro-mécanique à distance, à la main et à moteur, pour sectionneurs de hautes tensions à l'extérieur
DE681221C (de) * 1935-08-29 1939-09-18 Becker Elektrobahnen H Vorrichtung zur schrittweisen Fernbedienung eines in Stufen zu verstellenden Geraets
FR2269179A1 (sv) * 1974-04-25 1975-11-21 Naimer Hubert
US4042896A (en) * 1976-04-01 1977-08-16 General Electric Company Manual and motor operated circuit breaker
DE2835879A1 (de) * 1977-08-23 1979-03-08 Westinghouse Electric Corp Antriebsverbindung zwischen einem wahlweise betaetigbaren handgriff und einem motorantrieb einerseits und einer federspannwelle andererseits im betaetigungsmechanismus eines selbstschalters

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3794943A (en) * 1972-08-30 1974-02-26 Square D Co Motor-driven actuating mechanism for a pivotable operating handle of an electrical control device

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR631912A (fr) * 1926-04-01 1927-12-29 App Teco Dispositif de déclenchement automatique
FR704273A (fr) * 1930-10-23 1931-05-16 Achille Bagnagatti Commande électro-mécanique à distance, à la main et à moteur, pour sectionneurs de hautes tensions à l'extérieur
DE681221C (de) * 1935-08-29 1939-09-18 Becker Elektrobahnen H Vorrichtung zur schrittweisen Fernbedienung eines in Stufen zu verstellenden Geraets
FR2269179A1 (sv) * 1974-04-25 1975-11-21 Naimer Hubert
US4042896A (en) * 1976-04-01 1977-08-16 General Electric Company Manual and motor operated circuit breaker
DE2835879A1 (de) * 1977-08-23 1979-03-08 Westinghouse Electric Corp Antriebsverbindung zwischen einem wahlweise betaetigbaren handgriff und einem motorantrieb einerseits und einer federspannwelle andererseits im betaetigungsmechanismus eines selbstschalters

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7872203B2 (en) 2008-08-14 2011-01-18 Cooper Technologies Company Dual voltage switch

Also Published As

Publication number Publication date
FR2476906B1 (sv) 1982-08-27
EP0034966A1 (fr) 1981-09-02
DE3164940D1 (en) 1984-08-30
FR2476906A1 (fr) 1981-08-28
JPS6347095B2 (sv) 1988-09-20
ES8201354A1 (es) 1981-12-16
ES499400A0 (es) 1981-12-16
JPS56134429A (en) 1981-10-21

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