FR2806520A1 - CIRCUIT BREAKER CONTROL DEVICE - Google Patents

Abstract

Control device 1 for a circuit breaker comprising an actuator 10 intended to take a plurality of positions, an "ON" button 38, an "OFF" button 37, and a selector 39 intended to take a plurality of positions, including a first position of locking the actuator, the "ON" button, and the "OFF" button.

Description

Circuit breaker control device

  This invention relates to circuit breakers, and more particularly

  A control device intended for use with the devices

  trunks, in particular of the molded case type.

  Molded case circuit breakers for electrical systems are known in the art. The function of the circuit breaker is to shut off the electrical system under certain operating conditions. It is advantageous to provide a mechanism by which the electrical system

  is returned to service remotely and with a minimum response time.

  The circuit breaker control device is used to operate the circuit breaker.

  remote trunk. A control device for molded case circuit breakers is described in French Patent No. 2,701,596. With the

  control device, the circuit breaker can be opened, closed or reset

even after a trip.

  The present invention proposes, in particular, to offer functions

additional features.

  The present invention proposes, in particular, to offer security

increased rity.

  According to one aspect of the invention, a circuit breaker control device comprises an actuator, an "ON" button, an "OFF T" button, and a selector intended to assume a plurality of positions, including a first locking locking position.

  the actuator, the "ON" button, and the "STOP T" button.

  Advantageously, the first position of the corresponding selector

  lays in an open state of the circuit breaker. We can thus prohibit the

transformer shutdown.

  Advantageously, the passage of the selector in the first

  position is only allowed after opening of the circuit breaker.

  In one embodiment, the device comprises a finger

  and a first slide, the finger being able to push the slide

  bucket when tripping of the circuit breaker and the slide being

  then able to authorize the movement of the selector towards the first po-

  sition. In one embodiment, the selector comprises at least one locking tooth for the "ON" button and at least one locking tooth for the "STOP" button. The selector may include two locking teeth for the "ON" button and two teeth for

"STOP" button locked.

  Advantageously, the device comprises a second slide

  bucket with at least one inactive position and at least one position

  active selector blocking in the first position. The se-

  cond slide may include a selector blocking lug.

  In one embodiment, the second slide is provided

  a hole capable of cooperating with an external lock for the

  rusting of said second slide in said active position.

  In addition, the selector can be movable in translation in a direction perpendicular to the travel of the "ON" buttons and

"ARR ET".

  The selector can be provided with a second position of

  locking the actuator, and unlocking the "MAR-" buttons

  CHE "and" ARR T ". The selector can be provided with a third

  position for unlocking the actuator and locking the actuators

  "ON" and "OFF T" tones. The selector acts on a switch

  to authorize a power supply to the actuator.

  An embodiment of the invention is illustrated by:

  Figure 1 is a perspective view of an alternative embodiment

  sation of the circuit breaker control device, cover removed, in the first position;

  Figure 2 is a view similar to Figure 1, in the second-

position myself;

  Figure 3 is a view similar to Figure 1, in the third-

position myself;

  Figure 4 is a view from another perspective of the device

  circuit breaker control device of Figure 1, in the first posi-

  tion; Figure 5 is a view similar to Figure 4, in the second position;

  Figure 6 is a view similar to Figure 4, in the third

  position myself; Figure 7 is a side view of the device of Figure 1 in the OFF position; Figure 8 is a side view of the device of Figure 1 in the ON position; Figure 9 is a side view of the device of Figure 1 in the intermediate position of STOP to ON; and Figure 10 is a side view of the device of Figure 1

in the TRIGGERed position.

  As can be seen in the figures, the device for

  command 1 comprises a cam system 2 provided with a pair of cams 3 which can rotate about an axis 4. Two levers 5 comprising

  first and second ends 6, 7 can rotate around a first

  mier axis 8. The two levers 5 are pivotally coupled to an action-

neur 10 through an axis 8.

  The cam system 2 is coupled to the circuit breaker, sensitive to

  the state of an electrical system (not shown). The movement of the sys-

  cam 2, driven by lever 5 and actuator 10, -est

  suitable for opening and closing a set of contacts (not shown) of the device

  trunk. Opening the circuit breaker contact set interrupts the flow of electric current through the circuit breaker, as is

  well known. Closing the circuit breaker contacts allows the

  electric rant to flow through the circuit breaker, as is well known. The actuator 10 can be an electromagnet comprising a

  return spring (not shown), placed in a housing 11 of electro-

  loving and able to take successively the different positions of a plurality of positions. The levers 5, of the sliding and rotary type, are coupled to the electromagnet and sensitive to the action of this. A

  first end 6 of the levers 5 is pivotally coupled to the electro-

  magnet using the first axis 8 placed in a slot 9 of the electromagnet housing 11. The first axis 8, and therefore the pair of levers 5, can follow a translational movement in the slot 9 in response to the translational action of the actuator 10. The actuator 10 follows a translational movement towards the low due to the action of the solenoid of the actuator 10. The actuator 10 follows a translational movement towards

  the top under the impulse of a return spring.

  The control device 1 comprises a frame 13 of

  lever 5 which can rotate around an axis 14. The frame 13 is

  coupled to one of the two levers 5 by means of a coupling mechanism

  ge, such as springs 15, 16. The springs 15, 16 are fixed to the frame 13 at the level of fasteners 17, 18 and to the lever 5 at the level of a fastener 19. A guide device 20 is placed in a slot 21 of the frame 13 to guide the frame 13. The cam 3 has an axis 22 fixed above and placed inside a slot 23 of the frame 13. The axis 22 is used to make

  rotate the frame 13 in response to movement of the cam 3.

  As described above, the cam 3 has a base 24 having a surface 25 and at least one surface 26 placed substantially

  in opposition to the first surface 25 and culminating in a summit 27.

  In addition, first and second flanges 28, 29 extend from the base 24. The cam system 2 also comprises a rack 30,

  such as a sliding rack, coupled to the base 24 of the cam 3.

  The second end 7 of the lever 5 is placed in a first po-

  sition close to the second surface 26 and the first flange 28.

  Furthermore, the first surface 25 includes a first

  seems gear teeth 31 and rack 30 has a

  second set of gear teeth 32 associated with the first set

  ble of gear teeth 31. In addition, a handle 33 forming part of an actuator 34 of the circuit breaker is provided to be coupled to the rack 30 in order to help effect the aforementioned closing of the circuit breaker contacts. The cams 3 also have first and second fingers 35, 36. The first finger 35 connects the cams 3 to an "OFF" button 37 and the second finger 36 connects the cams 3 to a

"ON" button 38.

  A selector 39 is mounted between the frame 13 and the actuator

  , mobile in translation perpendicular to the movement of the

  "ON" 38 and "OFF T" tones 37. The selector 39 comprises an upper part 40 capable of projecting in part by an opening of a cover 12 so that a user can move it. The selector 39 comprises, near the upper part or, in this case, in one piece with the upper part 40, a control finger 41 in

projection towards the actuator 10.

  The control device 1 comprises a switch 42 ca

  able to supply or remove low voltage power from the ac

  actuator 10. The switch 42 is provided with a control blade 43 on which the finger 41 of the selector 39 can come to bear. In a first position of the so-called locking selector 39 and in a

  second position of selector 39 called manual, finger 41 of selector

  tor 39 is separated from the control blade 43 or at the very least exert-

  this very little support on the control blade 43. The actuator 10 is not supplied with power and is therefore incapable of movement. In a third position of the so-called automatic selector 39, the finger 41 selector 39 is in contact with the control blade 43 and exerts sufficient support

  to turn the switch 42 on and authorize the supply of the ac-

holder 10.

  The selector 39 comprises a lower part 44 provided with a central notch 45 and two pairs of locking teeth 46 and 47, 48 and 49, a pair of teeth 46 and 47 for locking the

  "ON" button 38 and a pair of teeth 48 and 49 for ver-

  rusting of the "STOP" button 37. The pairs of teeth 46 and 47, 48 and 49 are arranged on one side and on the other of the notch 45. Each

  tooth of a pair is separated from the other tooth of the same pair by an es-

pace 50.

  The "ON" button 38 includes a lateral projection

  the 51 arranged so that when the selector 39 is in the first

  re-positions a possible attempt to press the "MAR-" button

  CHE "38 is prevented by the projection 51 of said button" MAR-

  CHE "38 abuts on the end tooth 46 of the pair of

  teeth 46 and 47 of selector 39, when selector 39 is in the third

  sith position a possible attempt to push the "ON" button 38 is prevented by the protuberance 51 of said "ON" button 38 abutting on the other tooth 47 of the pair of teeth

  46 and 47 of selector 39, and when selector 39 is in the second-

  position an attempt to press the "START" button 38 is authorized, the protuberance 51 being able to pass into the space 50 between the

teeth 46 and 47.

  Similarly, the "ARR T" button 37 comprises a lateral protuberance 52 arranged so that when the selector 39 is in the first position any attempt to depress the "ARR T" button 37 is prevented by the protuberance 52 coming in. abutment on the tooth 48 of the pair of teeth 48 and 49 of the selector 39, when the selector 39 is in the third position a possible attempt to depress the "STOP" button 37 is prevented by the protuberance 52 coming into abutment on the tooth end 49 of the pair of teeth 48 and 49 of the selector 39, and when the selector 39 is in the second position an attempt to depress the "STOP" button 37

  is authorized, the protuberance 52 being able to pass into space 50 between-

be teeth 48 and 49.

  The control device 1 further comprises a first

  slide 53 movable in translation in a perpendicular direction

  re to that of the selector 39. The first slide 53 is provided with a

  surface 54 of contact with finger 36 of cam 3, and of a protuberance

  rancid 55 able to cooperate with the selector 39. A spring 56 exerts on the first slide 53 a force directed towards the rack 30. The

  selector 39 includes a shoulder formed by two parallel surfaces

  57 and 58 and a surface 59 perpendicular to the previous ones and separating them. The protrusion 55 of the first slide 53 can slide on

  either of the parallel surfaces 57 and 58 and can block a

  placement of the selector 39 whose perpendicular surface 59 comes into

abutment on said protuberance 55.

  The selector 39 can be freely moved between its second

  me and third positions whatever the position of the first coulis-

  bucket 53. The selector 39 can be freely moved from its first position to its second position whatever the position of the first

  slide 53. However, the movement of the selector 39 from its second

  me position at its first position is allowed if the first slide 53 is in a position such that the perpendicular surface 59

  be free to move relative to the protuberance 55, in other words

  mes, if the spring 56 is compressed under the action of the finger 35 on the sur-

contact face 54.

  The control device 1 further comprises a second

  slide 60 movable in translation in a direction perpendicular to

  re to that of the selector 39. The second slide 60 comprises a foot 61 capable of projecting into the notch 45 when the selector 39 is in its first position and, thus, blocking the selector 39 in said first position. This position of the second slide 60

  is said to be active. In the inactive position, the foot 61 is released from the sample

  crates and is unable to block the selector 39. The second slide 60

  includes a gripping button 62 capable of projecting by an or

  cover 12 so that a user can move it between an active position and an inactive position. The second slide 60 may include, near the gripping button 62, a hole 63

  in which a user can pass the ring of a padlock, not shown

  felt, when the second slide 60 is in the active position. In the inactive position, only the gripping button 62 protrudes from the cover 12. Complete extraction of the second slide 60 by pulling it from the active position is prohibited, the foot 61 coming into contact with the bottom

notch 45.

  It will be appreciated that the actuation device 1 of breaker-

  tor can successively take one of the configurations of a

  plurality of configurations in response to the change of state of a system

  me electric (not shown) and to the action of the electromagnet and the

  actuator return spring 10.

  For example, in Figure 8 the circuit breaker contacts are closed.

  mes and the lever 5 is in an "up" position and placed to the right of the center line 64, as seen in the figure. The second end 7 of the lever 5 is juxtaposed closely to the second surface 26 and to the

  second flange 29 whereby the cam 3, the frame 13 and the rack-

  re 30 are positioned to the right of the central line 64. This configuration

  ration is called "ON" position.

  In FIG. 10, in response to a change of state of the electrical system, for example in response to an overcurrent condition in the electrical system, the lever 33 rotates anticlockwise to open the contacts. This drives the rack 31 to the left and therefore this drives the cam 3 clockwise around the axis 3. This rotation of the cam 3 in combination with the axis 22 coupled to the slot 23 makes turn the frame 13 counterclockwise around

  axis 14. This configuration is called the "TRIGGERED" position.

  Then in response to the action of the actuator 10, the lever 5 is driven downwards into the slot 9, thereby hooking the second

  surface 26 and the second edge 29 of the cam 3. This action provo-

  that the rotation of the cam 3 clockwise

  rotation of axis 4, thus driving rack 30 to the left, com-

  pictured to me, and turning the handle 33 further

  counterclockwise. The frame 13

  turns counterclockwise. This reinitiates-

  reads the circuit breaker control device 1 after a trip

  breaker. This configuration is called position "RESET-

  TIALIZATION ". This configuration is also called ON position T representing the intermediate position of the control device 1 when the control device 1 moves from the

  ON position to OFF position.

  In Figure 7, in response to the action of the return spring of the

  actuator 10, the lever 5 is driven upwards in the slot 9 which

  positions the lever 5 to the left of the central line 64, as shown

  smelled. The second end 7 of the lever 5 is, therefore, juxtaposed closely to the second surface 26 and to the first flange 28. The contacts of the circuit breaker are then open. Frame 13 is maintained

in the "ARR T" position.

  In FIG. 9, in response to the action of the actuator 10, the lever

  5 is driven downwards into the slot 9, thereby causing the rotation

  counter 3 counterclockwise, causing the creation of

  mesh 30 to the right as shown, closing the contacts of the circuit breaker. The frame 13 rotates clockwise. The lever 5 and the cam system 2 return to the initial configuration of FIG. 12 when the lever 5 is driven upwards in the slot 9 by the action of the return spring of the actuator 10. The

  cam system 2 returns to its initial configuration before the

  sink 5 is not moved up.

  It will be appreciated that the control device 1 can be actuated manually to go from the "ON" position in FIG. 12, with the circuit breaker contacts closed, to the "OFF T" position in FIG. 15, to open the contacts. circuit breaker. In particular, the "STOP" button 37 can be pressed manually while the control device 1 is in the "ON" position in FIG. 12. This action rotates the cam 3 clockwise and the frame 13 in the direction counterclockwise, thus opening the contacts of

  circuit breaker while positioning lever 5 to the left of the central line

  64 and near the first flange 28. This leads the control device to the "ARR T" position in FIG. 15. To return to the

  position "ON" in figure 12, the button is pushed in manually

  your "ON" 38. This action turns the cam 3 anticlockwise

  two-hourly, thus closing the circuit breaker contacts while making

  move lever 5 to a position to the right of center line 64

  and near the second ledge 29.-

  Furthermore, when the control device 1 is located

  initially in the "ON" position of FIG. 12, the circuit breaker

  The trigger is triggered and drives the control device 1 to the "TRIGGERED" position in FIG. 13. The control device 1 is reset by the action of the electromagnet of the actuator 10 and

  brought to the "RESET" position in Figure 14. The

  control sitive 1 is then put in the "OFF" position of figure 15 by the return of the actuator 10. To return to the "ON" position of figure 12, the button is pressed manually

  "ON" 38 as described above. This action turns the

  me 3 counterclockwise, thus closing the circuit breaker contacts-

  while returning lever 5 to a position to the right of

  the central line 64 and near the second edge 29.

  This allows the buttons and the action to be locked.

  neur only from the tilted position to the right of the cam

  as shown in FIG. 7. This locking is carried out by

  placing the selector in its first position and can be secured

  by means of the second slide capable of locking the selector in its first

  better position and able to cooperate with a padlock. In the others

  positions of the cam, the user has the choice between the second and three

  5th position of the selector, the first slide preventing the

  placement towards the first position.

  It is understood that the foregoing description has not been given

  born only for illustration and not limitation and that variants

  or modifications may be made to it as part of the pre-

invention.

he

Claims (7)

  1. Control device (1) for circuit breaker, characterized in that it comprises an actuator (10) intended to take a   multiple positions, an "ON" button (38), an "AR-" button   RET "(37), and a selector (39) for taking a plurality of positions   including a first position for locking the ac-   the "ON" button, and the "STOP" button.   2. Device according to claim 1, characterized in that   that the first position of the selector (39) corresponds to a state of circuit breaker tripping.   3. Device according to claim 1 or 2, characterized by the   the fact that the passage of the selector in the first position is not authorized   only after tripping of the circuit breaker.   4. Device according to any one of the preceding claims.   teeth, characterized in that it comprises a finger (41) and a pre-   mier slide (53), the finger being able to push the slide when the circuit breaker trips and the slide then being able   to allow the selector to move to the first position.   5. Device according to any one of the preceding claims.   teeth, characterized in that the selector comprises at least one tooth (46) for locking the "ON" button and at least one tooth   (48) for locking the "STOP T" button.   6. Device according to any one of the preceding claims.   teeth, characterized in that it comprises a second slide (60)   provided with at least one inactive position and at least one ac-   selector blocking in the first position.   7. Device according to claim 6, characterized in that the second slide is provided with a bore (63) capable of cooperating with an external lock for locking said second slide in said active position.