EP2360706A1 - Interlocking device for interlocking at least a first and a second electrical circuit breaker - Google Patents
Interlocking device for interlocking at least a first and a second electrical circuit breaker Download PDFInfo
- Publication number
- EP2360706A1 EP2360706A1 EP10192734A EP10192734A EP2360706A1 EP 2360706 A1 EP2360706 A1 EP 2360706A1 EP 10192734 A EP10192734 A EP 10192734A EP 10192734 A EP10192734 A EP 10192734A EP 2360706 A1 EP2360706 A1 EP 2360706A1
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- EP
- European Patent Office
- Prior art keywords
- actuating lever
- lever
- kinematic mechanism
- assumes
- operating position
- 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.)
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- 230000007246 mechanism Effects 0.000 claims abstract description 109
- 230000005540 biological transmission Effects 0.000 claims description 62
- 230000008878 coupling Effects 0.000 claims description 25
- 238000010168 coupling process Methods 0.000 claims description 25
- 238000005859 coupling reaction Methods 0.000 claims description 25
- 230000005764 inhibitory process Effects 0.000 claims description 17
- 230000002401 inhibitory effect Effects 0.000 description 9
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000000670 limiting effect Effects 0.000 description 2
- 230000000284 resting effect Effects 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
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Classifications
-
- 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
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- 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
- H01H71/1009—Interconnected mechanisms
- H01H71/1018—Interconnected mechanisms with only external interconnections
Definitions
- the present invention concerns the technical field of electrical apparatuses and, more in particular, it concerns an interlocking device as defined in the preamble of the first claim.
- interlocking devices that can be associated with electric circuit breakers, for example for preventing an undesired simultaneous connection of a load to two electrical supply networks intended to operate in a mutually exclusive manner (like, for example, a primary power supply network and an auxiliary power supply network).
- Interlocking devices comprising a pair of inhibiting levers suitable for being rigidly coupled with respective front manoeuvring levers of the electric circuit breakers to be interlocked.
- Each of such inhibiting levers is independently mobile between a first and a second operating position and is suitable for being alternatively and selectively locked, through a locking element that can slide between a first and a second locking position, in one of such operating positions.
- the manoeuvring lever of the circuit breaker that is coupled with the locked inhibiting lever is in turn locked in a desired operating position of the manoeuvring lever.
- one of the circuit breakers associated with the interlocking device can be maintained for example in the open state, while the other circuit breaker can be manoeuvred freely between the respective open and closed states.
- An Interlocking device of the aforementioned type is described for example in the document EP1916682 .
- a general purpose of the present invention is that of providing an alternative solution of an interlocking device with respect to the solutions of the prior art described above.
- a group of parts as defined in claim 12 also forms the object of the present invention.
- Figure 1 represents a group of parts, generally indicated with reference numeral 1.
- the group 1 comprises an interlocking device 2 according to a currently preferred embodiment.
- Such a device is operatively interposed between a first electrical circuit breaker, or right circuit breaker 3R, and a second electrical circuit breaker, or left circuit breaker 3L, for interlocking such circuit breakers.
- the circuit breakers 3R, 3L respectively comprise a first manoeuvring lever, or right manoeuvring lever 5R, and a second manoeuvring lever, or left manoeuvring lever 5L.
- Each of such levers is independently mobile between a first manoeuvring lever operating position, or lower manoeuvring position M_DOWN, and a second manoeuvring lever operating position, or upper manoeuvring position M_UP.
- the lower and upper manoeuvring positions respectively correspond to an open state and to a closed state of the relative circuit breaker.
- the circuit breakers 3R, 3L are two identical modular electrical circuit breakers, each of which is in particular made up of four unipolar circuit breakers stably coupled with one another.
- interlocking device we mean, in general, a device that is suitable for preventing at least a first and a second electrical circuit breaker, between which such a device is operatively interposed, from simultaneously being in a closed state.
- a typical example of application of devices of this type is the one used during the installation of protection devices of the continuity groups. In these applications, the interlocking device is used for preventing a load from being simultaneously connected to two power supply networks.
- interlocking device we mean a device in which the interlocking function does not necessarily have to be obtained through a mechanical locking of the manoeuvring levers of the circuit breakers to be interlocked.
- the interlocking device 2 is also a modular device.
- the interlocking device 2 comprises a first actuating lever, or right actuating lever 10R, and a second actuating lever, or left actuating lever 10L.
- Each of such levers 10R, 10L is independently movable between a first actuating lever operating position, or lower actuating position A_DOWN, and a second actuating lever operating position, or upper actuating position A_UP.
- the right actuating lever 10R is represented in the lower actuation position A_DOWN and in the upper actuating position A_UP, respectively.
- the left actuating lever 10L is represented in the upper actuating position A_UP.
- the right and left actuating levers 10R, 10L can be operatively coupled to the right circuit breaker 3R and to the left circuit breaker 3L, respectively.
- the actuating levers 10R, 10L preferably comprise respective interconnection appendices 12R, 12L, which in the example respectively partially project from two opposite side walls 14R, 14L of a device body 15 of the interlocking device.
- the appendices 12R, 12L are mobile through respective movement openings 16R, 16L, in the example shaped like segments of a circular crown, provided on the side walls 14R, 14L.
- the appendices 12R, 12L are suitable for being inserted into respective interconnection openings 18 ( figure 2 ) that are provided laterally on at least one side of the right and left manoeuvring levers 5R, 5L for rigidly coupling each actuating lever 10R, 10L to the respective manoeuvring lever 5R, 5L.
- the interlocking device comprises a first kinematic mechanism or right kinematic mechanism 22R, 24R, 26R, 28R, 30R, 32R ( figure 7 ) and a second kinematic mechanism or left kinematic mechanism 22L, 24L, 26L, 28L, 30L, 32L ( figure 9 ).
- the right kinematic mechanism and the left kinematic mechanism are independently actuatable through the right actuating lever 10R and the left actuating lever 10L, respectively.
- each of such kinematic mechanisms is suitable for assuming a first operating configuration and a second operating configuration.
- the first ( figure 7 ) and the second ( figure 8 ) operating configuration can be respectively associated to the open state and to the closed state of the right circuit breaker 3R.
- the first ( figure 9 ) and the second ( figure 10 ) operating configuration can be respectively associated to the open state and to the closed state of the left circuit breaker 3L.
- each actuating lever 10R, 10L is suitable for assuming a first operating state, or actuation state, and a second operating state, or idle state. More in particular, as shall be made clearer in the rest of the description, in the actuation state, each actuating lever allows the actuation of the respective kinematic mechanism so that when such a lever respectively assumes the lower actuating position A_DOWN or the upper actuating position A_UP such a kinematic mechanism respectively assumes the first or the second operating configuration. In the idle state, on the other hand, each actuating lever is a substantially idle lever movable between the lower and upper actuation positions. Again more in particular, it is worth observing that each actuating lever 10R, 10L is suitable for assuming the idle state when the other of such actuating levers simultaneously assumes the actuation state and the upper actuating position A_UP.
- Figure 7 represents a plan view in which the side wall 14R ( figure 3 ) of the device body 15 has been removed to show the right kinematic mechanism 22R, 24R, 26R, 28R, 30R, 32R.
- the right kinematic mechanism and a support element 40 have been removed to show the left kinematic mechanism 22L, 24L, 26L, 28L, 30L, 32L.
- the preferably plate-shaped support element 40 is interposed between the right kinematic mechanism and the left kinematic mechanism and it is provided to support at least one of such kinematic mechanisms.
- the support element or support plate 40 visible in greater detail in figure 6 , is suitable for supporting the right kinematic mechanism.
- the left kinematic mechanism has a substantially identical operation to that of the right kinematic mechanism.
- the left kinematic mechanism is also structurally substantially the same as or in any case structurally very similar to the right kinematic mechanism.
- the shape of one or more members of the left kinematic mechanism can also differ to a certain extent from that of corresponding members of the right kinematic mechanism (for example the members 32R and 32L represented in figure 13 can be seen). In such a case, the operation of such members of the left kinematic mechanism remains, in any case, substantially identical to that of corresponding members of the right kinematic mechanism right.
- the right kinematic mechanism comprises a first movement lever or right movement lever 22R, a first release member or right release lever 24R, a first transmission member or right transmission lever 26R, a first coupling lever or right coupling lever 28R, a first slider or right slider 30R and a first selection member or right selection lever 32R.
- the left kinematic mechanism ( figure 9 ) correspondingly comprises a second movement lever or left movement lever 22L, a second release member or left release lever 24L, a second transmission member or left transmission lever 26L, a second coupling lever or left coupling lever 28L, a second slider or left slider 30L and a second selection member or left selection lever 32L.
- the movement lever 22R comprises a first end portion of movement lever to which the right release lever 24R is preferably hinged so as to rotate around an axis parallel to the first device pin 43.
- a release lever is in particular actuatable to make the respective actuating lever, that is to say the right actuating lever 10R, assume the aforementioned idle state.
- the right movement lever 22R also comprises a second end portion of movement lever suitable for being coupled, preferably in resting relationship, with the right coupling lever 28R.
- the first end portion of movement lever comprises an engagement portion 44R, preferably hook-shaped.
- the right release lever 24R is coupled with a release lever spring, which is not represented in the figures, which is suitable for actuating the right release lever towards the engagement portion 44R of the right movement lever 22R.
- the release lever 24R and the movement lever 22R are suitable for defining a movement space or movement slot 46R between them.
- the right transmission lever 26R is hinged to the device body 15 preferably so as to be able to rotate, independently from the movement of the right lever 22R, around the first device pin 43. It is worth observing that the right transmission lever is suitable for engaging the left selection lever 32L. More in particular, the transmission lever 26R comprises a release portion or release tooth 47R and a portion of mechanical interference or interference tongue 49R. The release tooth 47R is suitable for engaging a thrust portion 51R, preferably flat, of the right release lever 24R.
- the interference tongue 49R is suitable for engaging an inhibiting portion 53L, in the example a free end portion, of the left selection lever 32L.
- the left transmission lever 26L analogously comprises a release portion or release tooth 47L and a portion of mechanical interference or interference tongue 49L that are suitable for respectively engaging with a thrust portion 51L of the left release lever 24L and an inhibiting portion 53R of the right selection lever 32R (such a lever is not illustrated in figure 9 ).
- the support plate 40 comprises at least a support element through opening 55 ( figure 7 ), which is suitable to be operatively concurrently crossed by the left selection lever 32L and by the right selection lever 32R.
- such a lever preferably comprises a housing seat 56, for example defined between a pair of walls of such a transmission lever, which is suitable for receiving the intermediate portion of the movement lever 42R ( figure 7 ) .
- the coupling lever 28R comprises a first end portion of coupling lever suitable, in the example, for resting on the second end portion of movement lever, and a second end portion of coupling lever hinged to a second device pin 58, fixedly attached to the device body 15.
- the right coupling lever 28R comprises an intermediate portion of coupling lever, constrained in an articulated manner to the right slider 30R.
- the intermediate portion of coupling lever is provided with a elongated coupling lever slot 62R that is suitable for receiving a first slider pin 64R that is fixedly attached to the right slider 30R.
- the right selection lever 32R is also constrained in an articulated manner to the slider 30R.
- the right selection lever comprises a first end portion of selection lever that is equipped with an elongated selection lever slot 66R.
- Such a slot is in particular suitable for receiving a second slider pin 68R fixedly attached to the right slider 30R.
- the right selection lever 32R comprises, in addition to the inhibiting portion 53R, a respective intermediate portion of selection lever hinged to rotate around a third device pin 72 fixedly attached to the device body 15.
- a contrast spring 74R or an equivalent elastic element is provided, preferably fitted onto an end portion of the slider 30R, so as to oppose such a slider in a sliding direction.
- An analogous contrast spring 74L is provided, preferably fitted onto an end portion of the slider 30L, so as to oppose such a slider in a sliding direction.
- first pin 43, the second pin 58, the third pin 72, the first slider pin 64R and the second slider pin 68R have pin axes that are parallel to one another.
- such a lever comprises at least a first coupling element or right coupling recess 82R, preferably a coupling hole, which is suitable for cooperating with at least one first interconnecting element or right interconnection pin 84R for coupling such a pin to the right kinematic mechanism.
- At least a second coupling element or left coupling recess 82L ( figure 5 ) is provided on the left transmission lever 26L.
- the recess 82L is in the example a slotted hole.
- such a recess could be a hole which is the same as the hole 82R.
- the coupling recess 82L is suitable for cooperating with a second interconnecting element or left interconnection pin (not represented in the figures) for coupling such a pin to the left kinematic mechanism.
- the right pin 84R is suitable for being operatively interposed between the right kinematic mechanism and a mechanism for releasing or for opening the right circuit breaker.
- the pin 84R in particular, has a first end portion that is coupled with the right transmission lever 26R and a second end portion that is coupled with a circuit breaker member 86 that is part of the releasing mechanism of the right circuit breaker.
- the left pin is suitable for operatively being interposed between the left kinematic mechanism and a release or opening mechanism of the left circuit breaker.
- both the side walls 14L, 14R of the device body 15 and at least the walls of the circuit breakers intended to operatively be facing such walls 14L, 14R are equipped with suitable interconnection through openings or interconnection slots 88, 92 ( figures 2 , 3 and 5 ).
- the release mechanisms (not represented) of the right and left circuit breakers are quick release mechanisms.
- Such mechanisms are suitable for making the manoeuvring lever of the respective circuit breaker snap towards the lower manoeuvring position M_DOWN, so as to obtain the quick opening of the circuit breaker. This occurs in particular, when a predetermined intermediate position of the manoeuvring lever is past, when such a lever is actuated, for example manually, from the upper manoeuvring position M_UP towards the lower manoeuvring position M_DOWN.
- This type of quick release mechanism is widely known to a man skilled in the art and therefore shall not be described in further detail.
- the right kinematic mechanism is connected to the actuating lever 10R through a first connection member or right connection strip 94R.
- a first connection member or right connection strip 94R Such a strip is represented in greater detail in figure 15 .
- the strip comprises, in particular, a first portion of strip or first arm 95 that is suitable for being hinged to the right actuating lever 10R and a second strip portion or second arm 96 that is suitable for being operatively interposed between the right release lever 24R and the engagement portion 44R.
- first arm 95 that is suitable for being hinged to the right actuating lever 10R
- second strip portion or second arm 96 that is suitable for being operatively interposed between the right release lever 24R and the engagement portion 44R.
- a second connection member or left connection strip 94L having the same operation and preferably the same shape of the right strip 94R, is provided between the left actuating lever 10L and the left release lever 24L to connect the actuating lever 10L to the left kinematic mechanism.
- the right transmission lever 26R is suitable for respectively assuming a first ( figure 7 ) and a second ( figure 8 ) transmission member operating position
- the right selection lever is suitable for assuming respectively a stand-by operating position ( figure 7 ) and an inhibition operating position ( figure 8 , 11 , 12 ).
- the left transmission lever is suitable for assuming respectively a first ( figure 9 ) and a second ( figure 10 ) transmission member operating position
- the left selection lever is suitable for assuming respectively a stand-by operating position ( figure 9 ) and an inhibition operating position ( figure 10 ).
- each of the right 84R and left pins when coupled with the respective transmission lever 26R, 26L, is suitable for assuming a first interconnection position, or lower interconnection position I_DOWN, and a second interconnection position, or upper interconnection position I_UP ( figures 3-5 ).
- each interconnection pin is suitable for assuming respectively the lower or upper interconnection position when the transmission lever to which such a pin is coupled respectively assumes the first transmission member operating position ( figures 7 and 9 ) or the second transmission member operating position ( figures 8 and 10 ).
- Such lower and upper interconnection positions can be operatively associated respectively with the open state and with the closed state of the circuit breaker 3L, 3R to which each interconnection pin is coupled.
- the right selection lever 32R when it assumes the inhibition position, is suitable for being engaged by the left transmission lever 26L for preventing that such a transmission lever assumes the second transmission member operating position. It should be observed that in figure 11 , even though the left kinematic mechanism is shown, with the purpose of representing a configuration engagement between the right selection lever 32R and the left transmission lever 26L, neither the left selection lever 32L nor the support plate 40 have been represented. In such a figure, on the other hand, the right selection lever 32R has been represented in the inhibition position.
- the left selection lever 32L when it assumes the inhibition position, is suitable for being engaged with the right transmission lever 26R for preventing that such a transmission lever assumes the second transmission member operating position.
- the interference tongue 49R, 49L of each of the transmission levers 26R, 26L is suitable for engaging the selection lever of the other kinematic mechanism when such a selection lever assumes the inhibition position.
- the release tooth 47R, 47L of each of the transmission levers 26R, 26L is suitable for engaging the release lever 24R, 24L of the respective kinematic mechanism for actuating such a release lever and making the respective actuating lever 10R, 10L assume the idle state.
- the release tooth 47R and the interference tongue 49R are suitable for simultaneously engaging respectively the release lever 24R and the left selection lever 32L.
- the release tooth 47L and the interference tongue 49L of the left transmission lever 26L are suitable for simultaneously engaging respectively the left release lever 24L and the right selection lever 32R.
- each of the selection levers is removably lockable in the inhibition position when the respective actuating lever, that is to say the actuating lever associated with the same kinematic mechanism of the selection lever, simultaneously assumes the upper actuating position A_UP and the actuation state.
- each selection lever can be released to switch from the inhibition position to the stand-by position, when the respective actuating lever assumes the actuation state and is actuated to switch from the upper actuating position A_UP to the lower actuating position A_DOWN.
- the interlocking device 2 can comprise elements for communicating/detecting the electrical state of the group 1, and more in particular of the circuit breakers 3R, 3L.
- the interlocking device 2 can comprise elements for communicating/detecting the electrical state of the group 1, and more in particular of the circuit breakers 3R, 3L.
- the interlocking device 2 can comprise elements for communicating/detecting the electrical state of the group 1, and more in particular of the circuit breakers 3R, 3L.
- the interlocking device 2 can comprise elements for communicating/detecting the electrical state of the group 1, and more in particular of the circuit breakers 3R, 3L.
- the interlocking device 2 can comprise elements for communicating/detecting the electrical state of the group 1, and more in particular of the circuit breakers 3R, 3L.
- the interlocking device 2 can comprise elements for communicating/detecting the electrical state of the group 1, and more in particular of the circuit breakers 3R, 3L.
- the interlocking device 2 can comprise elements for communicating/detecting the electrical state of the group 1, and more in particular of the circuit breakers 3R,
- the right kinematic mechanism assumes the second operating configuration ( figure 8 ). More in particular, following such an actuation of the actuating lever 10R, the right transmission lever 26R switches from the first position of transmission member ( figure 7 ) to the second position of transmission member ( figure 8 ) and the right interconnection pin 84R consequently switches from the lower interconnection position I_DOWN ( figure 3 ) to the upper interconnection position I_UP ( figure 4 ).
- the interlocking device 2 assumes, in general, the configuration illustrated in figure 4 . It is worth observing that in such a configuration, the right actuating lever again assumes the actuation state.
- the left kinematic mechanism remains in the first operating configuration ( figure 9 ).
- the right kinematic mechanism is removably locked in such a configuration thanks to the action of the spring 74R and of the right strip 94R. From this condition, by actuating the actuating lever 10R towards the lower actuating position, such an actuating lever and the right kinematic mechanism are suitable for snapping, thanks to the action of the spring 74R, respectively in the lower actuating position A_DOWN and in the first operating configuration. In other words, both the right actuating lever 10R and the right kinematic mechanism assume the configuration illustrated in figure 7 again.
- the right selection lever 32R is in the inhibition position and therefore prevents the left transmission lever 26L from assuming the second transmission position member ( figure 10 ). It is worth observing that in the configuration of figure 2 , between the selection lever 32R and the interference tongue 49L there is preferably a small space for the recovery of the clearances (not represented). Before the left transmission lever can assume the second transmission member position, the interference tongue 49L is suitable for abutting against the inhibiting portion 53R of the right selection lever 32R ( figure 12 ) so as to lock the rotation of the left transmission lever.
- the left actuating lever when the left actuating lever assumes the idle state, it is suitable for assuming the upper actuating position A_UP and a plurality of intermediate positions between such an actuation position and the lower actuating position A_DOWN.
- the left actuating lever 10L assumes the upper actuating position in the idle state, the left kinematic mechanism does not assume the second operating configuration.
- the left strip cooperating with the release lever 24L, is automatically locked between such a release lever and the engagement portion 44L so that the actuating lever 10L assumes the actuation state again.
- the left interconnection pin when the interference tongue 49L abuts against the inhibiting portion 53R, also the left interconnection pin is consequently prevented from assuming the upper interconnection position I_UP. This ensures that such a pin mechanically interferes with the release mechanism of the left circuit breaker preventing such a circuit breaker from assuming the closed state. More in particular, the left interconnection pin, mechanically interfering with the release mechanism of the left circuit breaker, substantially determines an uncoupling of the left manoeuvring lever 5L by the release mechanism of the left circuit breaker. In other words, the left manoeuvring lever is able to assume the upper manoeuvring position but the left circuit breaker does not assume the consequent closed state.
- the left manoeuvring lever when from the configuration of figure 2 the left manoeuvring lever is actuated towards the upper manoeuvring position, the left actuating lever assumes the actuation state until there is the mechanical interference between the left transmission lever and the right selection lever. Subsequently, continuing the actuation of the left manoeuvring lever towards the upper manoeuvring position, such a manoeuvring lever is substantially uncoupled or released by the release mechanism of the left circuit breaker preventing the latter from assuming the closed state, while the left actuating lever assumes the idle state. In such a way the interlocking device 2 makes it possible to interlock the right and left circuit breakers.
- the interlocking device 2 makes it possible to interlock the circuit breakers 3R, 3L without mechanically locking the manoeuvring levers 5R, 5L, but by achieving a particular kinematic condition of operation of the interlocking device itself.
- actuation levers 10R, 10L do not undergo substantial stress even when the manoeuvring lever of the circuit breaker to be interlocked is actuated towards the upper manoeuvring position, such levers can advantageously be made with materials having a modulus of elasticity and/or a yield point that is lower with respect to that of the materials with which inhibiting levers of the interlocking devices of the prior art are normally made.
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Abstract
a first and a second actuating lever (10R, 10L) independently movable between a first and a second actuating lever operating position (A_DOWN, A_UP), the first and the second actuating lever (10R, 10L) being operatively connectable respectively to the first and to the second electrical circuit breaker (3R, 3L),
characterised in that
said device comprises a first and a second kinematic mechanism(22R, 24R, 26R, 28R, 30R, 32R; 22L, 24L, 26L, 28L, 30L, 32L) respectively actuatable through the first and the second actuating lever (10R, 10L) and each suitable for assuming a first and a second operating configuration;
each actuating lever (10R, 10L) being suitable for assuming:
- a first operating state, wherein the actuating lever (10R) allows actuating the respective kinematic mechanism(22R, 24R, 26R, 28R, 30R, 32R) so that when such lever assumes the first or the second actuating lever operating position (A_DOWN, A_UP) the respective kinematic mechanism respectively assumes the first or the second operating configuration; and
- a second operating state, in which the actuating lever (10R) is a substantially idle lever movable between the first and the second actuating lever operating position (A_DOWN, A_UP).
Description
- The present invention concerns the technical field of electrical apparatuses and, more in particular, it concerns an interlocking device as defined in the preamble of the first claim.
- In the technical field of electrical apparatuses it is known to use interlocking devices that can be associated with electric circuit breakers, for example for preventing an undesired simultaneous connection of a load to two electrical supply networks intended to operate in a mutually exclusive manner (like, for example, a primary power supply network and an auxiliary power supply network).
- Interlocking devices are known comprising a pair of inhibiting levers suitable for being rigidly coupled with respective front manoeuvring levers of the electric circuit breakers to be interlocked. Each of such inhibiting levers is independently mobile between a first and a second operating position and is suitable for being alternatively and selectively locked, through a locking element that can slide between a first and a second locking position, in one of such operating positions. In such a way, the manoeuvring lever of the circuit breaker that is coupled with the locked inhibiting lever, is in turn locked in a desired operating position of the manoeuvring lever. Therefore, one of the circuit breakers associated with the interlocking device can be maintained for example in the open state, while the other circuit breaker can be manoeuvred freely between the respective open and closed states. An Interlocking device of the aforementioned type is described for example in the document
EP1916682 . - A general purpose of the present invention is that of providing an alternative solution of an interlocking device with respect to the solutions of the prior art described above.
- This and other purposes are achieved through an interlocking device as defined in the attached claim 1 in a general embodiment and in the dependent claims in some particular embodiments.
- A group of parts as defined in claim 12 also forms the object of the present invention.
- Further characteristics and advantages of the invention shall become clearer from the following detailed description, given purely as an example and not for limiting purposes, with reference to the attached drawings, in which:
- -
figure 1 is an axonometric view in which the front side of a group of parts is visible including a first and a second electrical circuit breaker between which an interlocking device is interposed according to a currently preferred embodiment, the group of parts being represented in a first operating configuration; - -
figure 2 is a perspective view of the group of parts offigure 1 represented in a second operating configuration; - -
figure 3 is an axonometric view of the interlocking device represented in a first operating configuration; - -
figure 4 is an axonometric view of the interlocking device represented in a second operating configuration; - -
figure 5 is an axonometric view of the interlocking device in which such a device is seen from a side substantially opposite with respect to that offigures 3 and 4 ; - -
figure 6 is an axonometric view of some components of the interlocking device; - -
figure 7 is a top side plan view of the interlocking device in which a side wall of such a device, which in particular is shown infigure 3 , has been removed so as to make a first kinematic mechanism of the interlocking device, represented in a first operating configuration, more visible; - -
figure 8 is a top side plan view of the interlocking device, in which the first kinematic mechanism is represented in a second operating configuration; - -
figure 9 is a top side plan view of the interlocking device similar to that offigure 7 , in which also the first kinematic mechanism and a support element represented for example infigure 6 have been removed, so as to show a second kinematic mechanism of the interlocking device represented in a first operating configuration; - -
figure 10 is a top side plan view in which the second kinematic mechanism is represented in a second operating configuration; - -
figure 11 is a top side plan view in which the second kinematic mechanism is represented in a third configuration and in which a member of the second kinematic mechanism has been removed and a member of the first kinematic mechanism has been represented; - -
figure 12 is a top side plan view in which the second kinematic mechanism is represented in a fourth configuration and in which a member of the second kinematic mechanism has been removed and a member of the first kinematic mechanism has been represented; - -
figure 13 is an axonometric view in which two members of the interlocking device can be seen; - -
figure 14 is an axonometric view of a member of the interlocking device visible infigure 6 that is represented coupled with a member of one of the electric circuit breakers offigure 1 ; and - -
figure 15 is an axonometric view of a further member of the interlocking device. - In the present description and in the attached figures, the terms "right", "left", "lower" and "upper", shall be used with the sole purpose of making the description clearer. Therefore, such words should not be taken to limit the invention in any way.
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Figure 1 represents a group of parts, generally indicated with reference numeral 1. The group 1 comprises aninterlocking device 2 according to a currently preferred embodiment. Such a device is operatively interposed between a first electrical circuit breaker, orright circuit breaker 3R, and a second electrical circuit breaker, orleft circuit breaker 3L, for interlocking such circuit breakers. Thecircuit breakers manoeuvring lever 5R, and a second manoeuvring lever, or leftmanoeuvring lever 5L. Each of such levers is independently mobile between a first manoeuvring lever operating position, or lower manoeuvring position M_DOWN, and a second manoeuvring lever operating position, or upper manoeuvring position M_UP. The lower and upper manoeuvring positions respectively correspond to an open state and to a closed state of the relative circuit breaker. In the example offigure 1 , thecircuit breakers - It should be observed, that for the purposes of the present description, with the expression interlocking device, we mean, in general, a device that is suitable for preventing at least a first and a second electrical circuit breaker, between which such a device is operatively interposed, from simultaneously being in a closed state. A typical example of application of devices of this type is the one used during the installation of protection devices of the continuity groups. In these applications, the interlocking device is used for preventing a load from being simultaneously connected to two power supply networks.
- More in particular, it is worth underlining that for the purposes of the present description, by interlocking device we mean a device in which the interlocking function does not necessarily have to be obtained through a mechanical locking of the manoeuvring levers of the circuit breakers to be interlocked.
- In the example of
figure 1 , theinterlocking device 2 is also a modular device. - With reference to
figures 3-5 , it can be observed that theinterlocking device 2 comprises a first actuating lever, or right actuatinglever 10R, and a second actuating lever, or left actuatinglever 10L. - Each of
such levers figures 3 and 4 , the right actuatinglever 10R is represented in the lower actuation position A_DOWN and in the upper actuating position A_UP, respectively. Infigure 5 , where the interlocking device is seen from a side that is substantially opposite with respect to that visible infigures 3 and 4 , the left actuatinglever 10L is represented in the upper actuating position A_UP. - The right and left actuating
levers right circuit breaker 3R and to theleft circuit breaker 3L, respectively. - For such a purpose, it can be seen that the actuating levers 10R, 10L preferably comprise
respective interconnection appendices opposite side walls device body 15 of the interlocking device. Theappendices respective movement openings side walls - The
appendices figure 2 ) that are provided laterally on at least one side of the right and leftmanoeuvring levers lever manoeuvring lever circuit breakers - In the example of
figure 2 , only one of the openings can be seen 18 provided on a side of the right manoeuvring lever. An analogous opening is however provided also on the opposite side of such a manoeuvring lever so as to receive theinterconnection appendix 12R. - With reference to
figures 7 and9 , it can be seen that the interlocking device comprises a first kinematic mechanism or rightkinematic mechanism figure 7 ) and a second kinematic mechanism or leftkinematic mechanism figure 9 ). The right kinematic mechanism and the left kinematic mechanism are independently actuatable through the right actuatinglever 10R and the left actuatinglever 10L, respectively. In particular, each of such kinematic mechanisms is suitable for assuming a first operating configuration and a second operating configuration. In the case of the right kinematic mechanism, the first (figure 7 ) and the second (figure 8 ) operating configuration can be respectively associated to the open state and to the closed state of theright circuit breaker 3R. Analogously, in the case of the left kinematic mechanism, the first (figure 9 ) and the second (figure 10 ) operating configuration can be respectively associated to the open state and to the closed state of theleft circuit breaker 3L. - It is worth observing that each actuating
lever lever -
Figure 7 represents a plan view in which theside wall 14R (figure 3 ) of thedevice body 15 has been removed to show the rightkinematic mechanism figure 9 , on the other hand, together with thewall 14R, also the right kinematic mechanism and asupport element 40 have been removed to show the leftkinematic mechanism shaped support element 40, is interposed between the right kinematic mechanism and the left kinematic mechanism and it is provided to support at least one of such kinematic mechanisms. In the example, the support element orsupport plate 40, visible in greater detail infigure 6 , is suitable for supporting the right kinematic mechanism. - It should be observed that the left kinematic mechanism has a substantially identical operation to that of the right kinematic mechanism. In the example, the left kinematic mechanism is also structurally substantially the same as or in any case structurally very similar to the right kinematic mechanism. In other words, in the example, the shape of one or more members of the left kinematic mechanism can also differ to a certain extent from that of corresponding members of the right kinematic mechanism (for example the
members figure 13 can be seen). In such a case, the operation of such members of the left kinematic mechanism remains, in any case, substantially identical to that of corresponding members of the right kinematic mechanism right. Again in other words, unless specified otherwise, what shall be described hereafter in relation to the right kinematic mechanism, applies, mutatis mutandis, also for the left kinematic mechanism. Therefore, in the present description, a detailed description of the left kinematic mechanism has been omitted. - Again with reference to the
figure 7 , according to a currently preferred embodiment, the right kinematic mechanism comprises a first movement lever orright movement lever 22R, a first release member orright release lever 24R, a first transmission member orright transmission lever 26R, a first coupling lever orright coupling lever 28R, a first slider orright slider 30R and a first selection member orright selection lever 32R. - With reference to
figure 9 , according to such an embodiment, the left kinematic mechanism (figure 9 ) correspondingly comprises a second movement lever orleft movement lever 22L, a second release member or leftrelease lever 24L, a second transmission member or lefttransmission lever 26L, a second coupling lever orleft coupling lever 28L, a second slider or leftslider 30L and a second selection member or leftselection lever 32L. - Returning to
figure 7 , it can be observed that theright movement lever 22R is hinged at a respective intermediate portion ofmovement lever 42R to rotate around afirst device pin 43 fixedly attached to thedevice body 15. - The
movement lever 22R comprises a first end portion of movement lever to which theright release lever 24R is preferably hinged so as to rotate around an axis parallel to thefirst device pin 43. As shall be made clearer in the rest of the description, such a release lever is in particular actuatable to make the respective actuating lever, that is to say theright actuating lever 10R, assume the aforementioned idle state. Theright movement lever 22R also comprises a second end portion of movement lever suitable for being coupled, preferably in resting relationship, with theright coupling lever 28R. As can be observed infigure 7 , the first end portion of movement lever comprises anengagement portion 44R, preferably hook-shaped. In particular, theright release lever 24R is coupled with a release lever spring, which is not represented in the figures, which is suitable for actuating the right release lever towards theengagement portion 44R of theright movement lever 22R. Advantageously, therelease lever 24R and themovement lever 22R are suitable for defining a movement space ormovement slot 46R between them. - The
right transmission lever 26R is hinged to thedevice body 15 preferably so as to be able to rotate, independently from the movement of theright lever 22R, around thefirst device pin 43. It is worth observing that the right transmission lever is suitable for engaging theleft selection lever 32L. More in particular, thetransmission lever 26R comprises a release portion orrelease tooth 47R and a portion of mechanical interference orinterference tongue 49R. Therelease tooth 47R is suitable for engaging athrust portion 51R, preferably flat, of theright release lever 24R. Theinterference tongue 49R, on the other hand, is suitable for engaging an inhibitingportion 53L, in the example a free end portion, of theleft selection lever 32L. With reference tofigure 9 it can be seen that theleft transmission lever 26L analogously comprises a release portion orrelease tooth 47L and a portion of mechanical interference orinterference tongue 49L that are suitable for respectively engaging with athrust portion 51L of theleft release lever 24L and an inhibitingportion 53R of theright selection lever 32R (such a lever is not illustrated infigure 9 ). Concerning this, it is worth observing that thesupport plate 40 comprises at least a support element through opening 55 (figure 7 ), which is suitable to be operatively concurrently crossed by theleft selection lever 32L and by theright selection lever 32R. - In
figure 14 , in which theright transmission lever 26R is represented in greater detail, it can be observed that such a lever preferably comprises ahousing seat 56, for example defined between a pair of walls of such a transmission lever, which is suitable for receiving the intermediate portion of themovement lever 42R (figure 7 ) . - The
coupling lever 28R comprises a first end portion of coupling lever suitable, in the example, for resting on the second end portion of movement lever, and a second end portion of coupling lever hinged to asecond device pin 58, fixedly attached to thedevice body 15. Moreover, theright coupling lever 28R comprises an intermediate portion of coupling lever, constrained in an articulated manner to theright slider 30R. Preferably, the intermediate portion of coupling lever is provided with a elongatedcoupling lever slot 62R that is suitable for receiving afirst slider pin 64R that is fixedly attached to theright slider 30R. - The
right selection lever 32R is also constrained in an articulated manner to theslider 30R. Preferably, the right selection lever comprises a first end portion of selection lever that is equipped with an elongatedselection lever slot 66R. Such a slot is in particular suitable for receiving asecond slider pin 68R fixedly attached to theright slider 30R. In the example, theright selection lever 32R comprises, in addition to the inhibitingportion 53R, a respective intermediate portion of selection lever hinged to rotate around athird device pin 72 fixedly attached to thedevice body 15. - A
contrast spring 74R or an equivalent elastic element is provided, preferably fitted onto an end portion of theslider 30R, so as to oppose such a slider in a sliding direction. Ananalogous contrast spring 74L is provided, preferably fitted onto an end portion of theslider 30L, so as to oppose such a slider in a sliding direction. - It is worth observing that the
first pin 43, thesecond pin 58, thethird pin 72, thefirst slider pin 64R and thesecond slider pin 68R have pin axes that are parallel to one another. - Going back to the
right transmission lever 26R, infigure 14 , it can be observed that such a lever comprises at least a first coupling element orright coupling recess 82R, preferably a coupling hole, which is suitable for cooperating with at least one first interconnecting element orright interconnection pin 84R for coupling such a pin to the right kinematic mechanism. - At least a second coupling element or
left coupling recess 82L (figure 5 ) is provided on theleft transmission lever 26L. Therecess 82L is in the example a slotted hole. However, according to a further embodiment, such a recess could be a hole which is the same as thehole 82R. Thecoupling recess 82L is suitable for cooperating with a second interconnecting element or left interconnection pin (not represented in the figures) for coupling such a pin to the left kinematic mechanism. Theright pin 84R is suitable for being operatively interposed between the right kinematic mechanism and a mechanism for releasing or for opening the right circuit breaker. Infigure 14 , thepin 84R, in particular, has a first end portion that is coupled with theright transmission lever 26R and a second end portion that is coupled with acircuit breaker member 86 that is part of the releasing mechanism of the right circuit breaker. Analogously, the left pin is suitable for operatively being interposed between the left kinematic mechanism and a release or opening mechanism of the left circuit breaker. In that regard it should be noted that in order to allow the coupling of the interlockingdevice 2 with the right and left circuit breakers through the right and left interconnection pins, both theside walls device body 15 and at least the walls of the circuit breakers intended to operatively be facingsuch walls interconnection slots 88, 92 (figures 2 ,3 and5 ). - In the example, the release mechanisms (not represented) of the right and left circuit breakers are quick release mechanisms. Such mechanisms are suitable for making the manoeuvring lever of the respective circuit breaker snap towards the lower manoeuvring position M_DOWN, so as to obtain the quick opening of the circuit breaker. This occurs in particular, when a predetermined intermediate position of the manoeuvring lever is past, when such a lever is actuated, for example manually, from the upper manoeuvring position M_UP towards the lower manoeuvring position M_DOWN. This type of quick release mechanism is widely known to a man skilled in the art and therefore shall not be described in further detail.
- According to an embodiment, the right kinematic mechanism is connected to the
actuating lever 10R through a first connection member orright connection strip 94R. Such a strip is represented in greater detail infigure 15 . - With cross reference to
figures 7 and15 , the strip comprises, in particular, a first portion of strip orfirst arm 95 that is suitable for being hinged to theright actuating lever 10R and a second strip portion orsecond arm 96 that is suitable for being operatively interposed between theright release lever 24R and theengagement portion 44R. When the right actuating lever assumes the actuation state, thesecond arm 96 of the strip is in particular clamped between the right release lever and theengagement portion 44R. A projection of therelease lever 24R in particular avoids that thestrip 94R snaps into themovement slot 46R when the right actuating lever assumes the actuation state. - A second connection member or left
connection strip 94L, having the same operation and preferably the same shape of theright strip 94R, is provided between theleft actuating lever 10L and theleft release lever 24L to connect theactuating lever 10L to the left kinematic mechanism. - It is worth emphasising that when the right kinematic mechanism respectively assumes the first (
figure 7 ) and the second (figure 8 ) operating configuration, theright transmission lever 26R is suitable for respectively assuming a first (figure 7 ) and a second (figure 8 ) transmission member operating position, while the right selection lever is suitable for assuming respectively a stand-by operating position (figure 7 ) and an inhibition operating position (figure 8 ,11 ,12 ). Analogously, when the left kinematic mechanism respectively assumes the first and the second operating configuration, the left transmission lever is suitable for assuming respectively a first (figure 9 ) and a second (figure 10 ) transmission member operating position, while the left selection lever is suitable for assuming respectively a stand-by operating position (figure 9 ) and an inhibition operating position (figure 10 ). - It should also be observed that each of the right 84R and left pins, when coupled with the
respective transmission lever figures 3-5 ). In particular, each interconnection pin is suitable for assuming respectively the lower or upper interconnection position when the transmission lever to which such a pin is coupled respectively assumes the first transmission member operating position (figures 7 and9 ) or the second transmission member operating position (figures 8 and10 ). Such lower and upper interconnection positions can be operatively associated respectively with the open state and with the closed state of thecircuit breaker - With reference to
figure 11 , it can be observed that theright selection lever 32R, when it assumes the inhibition position, is suitable for being engaged by theleft transmission lever 26L for preventing that such a transmission lever assumes the second transmission member operating position. It should be observed that infigure 11 , even though the left kinematic mechanism is shown, with the purpose of representing a configuration engagement between theright selection lever 32R and theleft transmission lever 26L, neither theleft selection lever 32L nor thesupport plate 40 have been represented. In such a figure, on the other hand, theright selection lever 32R has been represented in the inhibition position. - Analogously, the
left selection lever 32L, when it assumes the inhibition position, is suitable for being engaged with theright transmission lever 26R for preventing that such a transmission lever assumes the second transmission member operating position. - More in particular, the
interference tongue release tooth release lever respective actuating lever - Again more in particular, following an actuation of the
right actuating lever 10R from the lower actuating position A_DOWN towards the upper actuating position A_UP and while the left kinematic mechanism assumes the second operating configuration, therelease tooth 47R and theinterference tongue 49R are suitable for simultaneously engaging respectively therelease lever 24R and theleft selection lever 32L. Analogously, with reference for example tofigure 11 , following an actuation of theleft actuating lever 10L from the lower actuating position A_DOWN towards the upper actuating position A_UP and while the right kinematic mechanism assumes the second operating configuration, therelease tooth 47L and theinterference tongue 49L of theleft transmission lever 26L are suitable for simultaneously engaging respectively theleft release lever 24L and theright selection lever 32R. - It should be observed that each of the selection levers, right and left, is removably lockable in the inhibition position when the respective actuating lever, that is to say the actuating lever associated with the same kinematic mechanism of the selection lever, simultaneously assumes the upper actuating position A_UP and the actuation state. Moreover, it should be observed that each selection lever can be released to switch from the inhibition position to the stand-by position, when the respective actuating lever assumes the actuation state and is actuated to switch from the upper actuating position A_UP to the lower actuating position A_DOWN.
- It is worth observing that the interlocking
device 2 can comprise elements for communicating/detecting the electrical state of the group 1, and more in particular of thecircuit breakers electrical contact plate 101 that is mobile between twoelectrical contacts electrical circuit breaker electrical terminals 107, in the example three terminals for each kinematic mechanism, are provided in the interlocking device. The control of theelectrical contact plates 101 is associated with the translation of thesliders electrical contacts - Now that the structure of the interlocking
device 2 has been described, we shall now describe its operation. - Let us assume that the group of parts 1 is initially in the configuration illustrated in
figure 1 . Infigure 1 both the manoeuvring levers 5L, 5R, are represented in the lower manoeuvring position M_DOWN. Therefore both thecircuit breakers actuating levers figure 3 ). Moreover, in such a configuration, both the actuating levers assume the actuation state. More in particular both the right kinematic mechanism and the left kinematic mechanism assume the first operating configuration (figures 7 and9 ). - From the configuration of
figure 1 , assuming for example that theright manoeuvring lever 5R is actuated from the lower manoeuvring position M_DOWN to the upper manoeuvring position M_UP, the right circuit breaker will assume a closed state while the left circuit breaker will remain in the respective open state (figure 2 ). Passing from the position M_DOWN to the position M_UP, the right manoeuvring lever carries along theright actuating lever 10R, rigidly connected to it. Therefore, the right actuating lever switches from the position A_DOWN to the position A_UP (figures 3 and 4 ). Since, during such switching, the right actuating lever is still in the actuation state, in the configuration offigure 2 , the right kinematic mechanism assumes the second operating configuration (figure 8 ). More in particular, following such an actuation of theactuating lever 10R, theright transmission lever 26R switches from the first position of transmission member (figure 7 ) to the second position of transmission member (figure 8 ) and theright interconnection pin 84R consequently switches from the lower interconnection position I_DOWN (figure 3 ) to the upper interconnection position I_UP (figure 4 ). - In other words, once the position A_UP has been reached by the right actuating lever, the interlocking
device 2 assumes, in general, the configuration illustrated infigure 4 . It is worth observing that in such a configuration, the right actuating lever again assumes the actuation state. - The left kinematic mechanism, on the other hand, remains in the first operating configuration (
figure 9 ). - It is worth observing that during the switching of the
actuating lever 10R from the position A_DOWN to the position A_UP, while such a lever assumes the actuation state, theright strip 94R exerts a thrusting action on theengagement portion 44R of theright movement lever 22R. Such a movement lever consequently cooperates with the right coupling lever so as to determine a sliding of theright slider 30R in contrast with thespring 74R so as to load such a spring. Such a sliding of theslider 30R allows the right selection lever to assume the inhibition position (figures 8 ,11 ,12 ) once that the right kinematic mechanism has taken up the second operating configuration. - It should also be noted that, during the switching of the right kinematic mechanism from the first to the second operating configuration, the switching of the right transmission lever from the first (
figure 7 ) to the second (figure 8 ) transmission position member is determined by the thrusting action of thethrust portion 51R against therelease tooth 47R. - Once the second operating configuration has been assumed, the right kinematic mechanism is removably locked in such a configuration thanks to the action of the
spring 74R and of theright strip 94R. From this condition, by actuating theactuating lever 10R towards the lower actuating position, such an actuating lever and the right kinematic mechanism are suitable for snapping, thanks to the action of thespring 74R, respectively in the lower actuating position A_DOWN and in the first operating configuration. In other words, both theright actuating lever 10R and the right kinematic mechanism assume the configuration illustrated infigure 7 again. - Let us now hypothesis, from the first configuration of
figure 2 , to actuate theleft manoeuvring lever 5L in a way such as to make such a lever switch from the position M_DOWN to the position M_UP. This could occur due to an unintentional actuation of the left manoeuvring lever, for example a manual actuation or an actuation through a motorised device associable to the left circuit breaker. Switching from the lower manoeuvring position to the upper manoeuvring position, theleft manoeuvring lever 5L sets theleft actuating lever 10L in rotation. In this case, however, theright selection lever 32R is in the inhibition position and therefore prevents theleft transmission lever 26L from assuming the second transmission position member (figure 10 ). It is worth observing that in the configuration offigure 2 , between theselection lever 32R and theinterference tongue 49L there is preferably a small space for the recovery of the clearances (not represented). Before the left transmission lever can assume the second transmission member position, theinterference tongue 49L is suitable for abutting against the inhibitingportion 53R of theright selection lever 32R (figure 12 ) so as to lock the rotation of the left transmission lever. Once this abutment condition has been reached, continuing to actuate the left actuating lever towards the upper actuating position, therelease tooth 47L, cooperating with thethrust portion 51L, causes a displacement or backward movement of therelease lever 24L against the action of the aforementioned release lever spring (not represented). This determines the snapping of theleft strip 94L inside themovement slot 46L. From this moment, theactuating lever 10L assumes the idle state. It is worth observing that infigure 11 we have tried to represent a condition that is immediately before the snapping of thestrip 94L into themovement slot 46L, in particular emphasizing the displacement of therelease lever 24L due to therelease tooth 47L. Infigure 12 , on the other hand, we have tried to represent a condition in which thestrip 94L has snapped into themovement slot 46L. In other words, once such an idle state has been assumed, the left actuating lever is mobile between the lower actuating position A_DOWN and the upper actuating position A_UP without substantially actuating the left kinematic mechanism and substantially determining only one movement of theleft strip 94L along themovement slot 46L. Again in other words, the left actuating lever is substantially uncoupled or released by the left kinematic mechanism. In that regard, it is worth underlining that in the example, when the left actuating lever assumes the idle state, it is suitable for assuming the upper actuating position A_UP and a plurality of intermediate positions between such an actuation position and the lower actuating position A_DOWN. In particular, it is worth observing that when theleft actuating lever 10L assumes the upper actuating position in the idle state, the left kinematic mechanism does not assume the second operating configuration. On the other hand, when the left actuating lever is taken back into the first actuation position from the idle state, the left strip, cooperating with therelease lever 24L, is automatically locked between such a release lever and theengagement portion 44L so that theactuating lever 10L assumes the actuation state again. - It is worth emphasising that when the
interference tongue 49L abuts against the inhibitingportion 53R, also the left interconnection pin is consequently prevented from assuming the upper interconnection position I_UP. This ensures that such a pin mechanically interferes with the release mechanism of the left circuit breaker preventing such a circuit breaker from assuming the closed state. More in particular, the left interconnection pin, mechanically interfering with the release mechanism of the left circuit breaker, substantially determines an uncoupling of theleft manoeuvring lever 5L by the release mechanism of the left circuit breaker. In other words, the left manoeuvring lever is able to assume the upper manoeuvring position but the left circuit breaker does not assume the consequent closed state. - In summary, when from the configuration of
figure 2 the left manoeuvring lever is actuated towards the upper manoeuvring position, the left actuating lever assumes the actuation state until there is the mechanical interference between the left transmission lever and the right selection lever. Subsequently, continuing the actuation of the left manoeuvring lever towards the upper manoeuvring position, such a manoeuvring lever is substantially uncoupled or released by the release mechanism of the left circuit breaker preventing the latter from assuming the closed state, while the left actuating lever assumes the idle state. In such a way the interlockingdevice 2 makes it possible to interlock the right and left circuit breakers. - In particular, it should be observed that the interlocking
device 2 makes it possible to interlock thecircuit breakers - It should also be observed that, since the actuation levers 10R, 10L, do not undergo substantial stress even when the manoeuvring lever of the circuit breaker to be interlocked is actuated towards the upper manoeuvring position, such levers can advantageously be made with materials having a modulus of elasticity and/or a yield point that is lower with respect to that of the materials with which inhibiting levers of the interlocking devices of the prior art are normally made.
- Based upon what has been discussed above, it is clear that if initially the configuration of the group of parts 1 were inverted with respect to that of
figure 2 , that is to say, if the right and left manoeuvring levers initially assumed the lower manoeuvring position and the upper manoeuvring position, respectively, the operation of the group 1 would also be inverted with respect to that described above. More in particular, in such a case, following an actuation of the right manoeuvring lever from the lower manoeuvring position to the upper manoeuvring position, the right actuating lever would assume the idle state while the right manoeuvring lever would be uncoupled from the release mechanism of the right circuit breaker. - As far as the elements for detecting/communicating the electrical state of the group 1 are concerned, it can also be observed that, for the purposes of correct operation of the interlocking device, it is necessary that the release of the right and left strips occurs before the possible commutation of the respective
electrical contact plates 101 so as to not cause a variation in the electrical state at theterminals 107 of the interlocking device. - Based upon what has been described above, it is thus possible to understand how an interlocking device according to the present description is such as to be able to achieve the aforementioned purposes.
- Without affecting the principle of the invention, the embodiments and the manufacture details may be widely varied with respect to what has been described and illustrated purely as a non limiting example, without for this reason departing from the scope of the invention as defined in the attached claims.
Claims (12)
- Interlocking device (2) for interlocking at least a first and a second electrical circuit breaker (3R, 3L), that is, for preventing such circuit breakers (3R, 3L) from simultaneously assuming a closed state, comprising:a first and a second actuating lever (10R, 10L) independently movable between a first and a second actuating lever operating position (A_DOWN, A_UP), the first and the second actuating lever (10R, 10L) being operatively connectable respectively to the first and to the second electrical circuit breaker (3R, 3L),characterised in thatsaid device comprises a first and a second kinematic mechanism (22R, 24R, 26R, 28R, 30R, 32R; 22L, 24L, 26L, 28L, 30L, 32L) respectively actuable through the first and second actuating lever (10R, 10L) and each suitable for assuming a first and a second operating configuration;each actuating lever (10R, 10L) being suitable for assuming:- a first operating state, wherein the actuating lever (10R) allows actuating the respective kinematic mechanism (22R, 24R, 26R, 28R, 30R, 32R) so that when such lever assumes the first or the second actuating lever operating position (A_DOWN, A_UP) the respective kinematic mechanism respectively assumes the first or the second operating configuration; and- a second operating state, wherein the actuating lever (10R) is a substantially idle lever movable between the first and the second actuating lever operating position (A_DOWN, A_UP).
- Interlocking device (2) according to claim 1, wherein each actuating lever (10L) is suitable for assuming the second operating state when the other actuating lever (10R) simultaneously assumes the first operating state and the second actuating lever operating position (A_UP).
- Interlocking device (2) according to claims 1 or 2, wherein the first kinematic mechanism (22R, 24R, 26R, 28R, 30R, 32R) comprises a first transmission member (26R) and a first selection member (32R) and wherein the second kinematic mechanism (22L, 24L, 26L, 28L, 30L, 32L) comprises a second transmission member (26L) and a second selection member (32L), the first transmission member (26R) being suitable for engaging the second selection member (32L) and the second transmission member (26L) being suitable for engaging the first selection member (32R).
- Interlocking device (2) according to claim 3, wherein:- when the first kinematic mechanism (22R, 24R, 26R, 28R, 30R, 32R) respectively assumes said first and second operating configuration, the first transmission member (26R) is suitable for respectively assuming a first and a second transmission member operating position and the first selection member (32R) is suitable for respectively assuming a stand-by operating position and an inhibition operating position; and- when the second kinematic mechanism (22L, 24L, 26L, 28L, 30L, 32L) assumes said first and second operating configuration, the second transmission member (26L) is suitable for respectively assuming a first and a second transmission member operating position and the second selection member (32L) is suitable for respectively assuming a stand-by operating position and an inhibition operating position;
the first selection member (32R), when it assumes said inhibition position, being suitable for being engaged by the second transmission member (26L) for preventing such transmission member (26L) from assuming said second transmission member operating position, and the second selection member (32L), when it assumes said inhibition position, being suitable for being engaged by the first transmission member (26R) for preventing such transmission member (26R) from assuming said second transmission member operating position. - Interlocking device (2) according to claim 4, wherein each of said selection members (32R) is removably lockable in said inhibition position when the respective actuating lever (10R) simultaneously assumes the second actuating lever operating position (A_UP) and the first operating state, and is releasable to switch from said inhibition position to said stand-by position, when the respective actuating lever (10R) assumes the first operating state and is actuated to switch from the second actuating lever operating position to the first actuating lever operating position.
- Interlocking device (2) according to claim 4 or 5, wherein:- each of said kinematic mechanisms (22R, 24R, 26R, 28R, 30R, 32R) comprises a release member (24R) actuable to make the respective actuating lever (10R) assume said second operating state; and- said transmission members (26R, 26L) comprise each a mechanical interference portion (49R, 49L) and a release portion (47R, 47L), the mechanical interference portion (49L) of each of said transmission members (26L) being suitable for engaging the selection member (32R) of the other of said kinematic mechanisms (22R, 24R, 26R, 28R, 30R, 32R) when such member (32R) assumes said inhibition position, and the release portion (47L) of each of said transmission members (26L) being suitable for engaging the release member (24L) of the respective kinematic mechanism (22L, 24L, 26L, 28L, 30L, 32L) for actuating such release member (24L) and make the respective actuating lever (10L) assume said second operating state.
- Interlocking device (2) according to claim 6, wherein:- following an actuation of the first actuating lever (10R) from the first actuating lever operating position towards the second actuating lever operating position, and while the second kinematic mechanism (22L, 24L, 26L, 28L, 30L, 32L) assumes the second operating configuration, the release portion (47R) and the mechanical interference portion (49R) of the first transmission member (26R) are suitable for simultaneously engaging respectively the release member (24R) of the first kinematic mechanism (22R, 24R, 26R, 28R, 30R, 32R) and the selection member (32L) of the second kinematic mechanism (22L, 24L, 26L, 28L, 30L, 32L); and- following an actuation of the second actuating lever (10L) from the first actuating lever operating position towards the second actuating lever operating position, and while the first kinematic mechanism (22R, 24R, 26R, 28R, 30R, 32R) assumes the second operating configuration, the release portion (47L) and the mechanical interference portion (49L) of the second transmission member (26L) are suitable for simultaneously engaging respectively the release member (24L) of the second kinematic mechanism (22L, 24L, 26L, 28L, 30L, 32L) and the selection member (32R) of the first kinematic mechanism (22R, 24R, 26R, 28R, 30R, 32R).
- Interlocking device (2) according to any one of claims 3 to 7, wherein the first and the second transmission members (26R, 26L) respectively comprise at least a first and at least a second coupling element (82R, 82L) suitable for respectively cooperating with at least a first and at least a second interconnecting element (84R) for coupling said interconnecting elements (84R) to said kinematic mechanisms (22R, 24R, 26R, 28R, 30R, 32R; 22L, 24L, 26L, 28L, 30L, 32L), the first interconnecting element (84R) being suitable for being operatively interposed between the first kinematic mechanism (22R, 24R, 26R, 28R, 30R, 32R) and a mechanism for releasing or opening said first circuit breaker (3R) and the second interconnecting element being suitable for being operatively interposed between said second kinematic mechanism (22L, 24L, 26L, 28L, 30L, 32L) and a mechanism for releasing or opening said second circuit breaker (3L).
- Interlocking device (2) according to any one of claims 3 to 8, comprising at least one support element (40) for at least one of said kinematic mechanisms (22R, 24R, 26R, 28R, 30R, 32R; 22L, 24L, 26L, 28L, 30L, 32L), the support element (40) being interposed between the first (22R, 24R, 26R, 28R, 30R, 32R) and the second kinematic mechanism (22L, 24L, 26L, 28L, 30L, 32L) and including at least one support element through opening (55) suitable for being operatively concurrently crossed by the first and by the second selection member (32R, 32L).
- Interlocking device (2) according to any one of the previous claims, wherein the first and the second kinematic mechanism (22R, 24R, 26R, 28R, 30R, 32R; 22L, 24L, 26L, 28L, 30L, 32L) have a substantially identical operation.
- Interlocking device (2) according to any one of the previous claims, comprising elements for detecting the electrical state (101, 103, 105, 107) of said circuit breakers.
- Group of parts (1) comprising a first electrical circuit breaker (3R), a second electrical circuit breaker (3L) and an interlocking device (2) as defined in any one of the previous claims for interlocking such circuit breakers (3R, 3L).
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PL10192734T PL2360706T3 (en) | 2010-02-23 | 2010-11-26 | Interlocking device for interlocking at least a first and a second electrical circuit breaker |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ITRM2010A000072A IT1398379B1 (en) | 2010-02-23 | 2010-02-23 | INTERLOCK DEVICE TO INTERLOCK AT LEAST ONE FIRST AND ONE SECOND ELECTRIC SWITCH. |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2360706A1 true EP2360706A1 (en) | 2011-08-24 |
EP2360706B1 EP2360706B1 (en) | 2012-06-20 |
Family
ID=42813140
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP10192734A Active EP2360706B1 (en) | 2010-02-23 | 2010-11-26 | Interlocking device for interlocking at least a first and a second electrical circuit breaker |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP2360706B1 (en) |
CN (1) | CN102163509B (en) |
IT (1) | IT1398379B1 (en) |
PL (1) | PL2360706T3 (en) |
RU (1) | RU2558397C2 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2669923A1 (en) * | 2012-06-01 | 2013-12-04 | General Electric Company | Circuit breaker and method of tripping a circuit breaker |
WO2014029560A1 (en) * | 2012-08-22 | 2014-02-27 | Siemens Aktiengesellschaft | Handle and circuit breaker, multistage circuit breaker and circuit breaker with accessory part |
RU2562451C1 (en) * | 2011-11-17 | 2015-09-10 | АББ Технолоджи Лтд. | Mechanism of mutual blocking for switching devices |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2022222033A1 (en) * | 2021-04-20 | 2022-10-27 | Abb Schweiz Ag | Mechanical interlocking system and switchgear comprising the same |
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EP0383700A1 (en) * | 1989-02-16 | 1990-08-22 | Merlin Gerin | Interlocking module for two electrical switch apparatuses in a miniature moulded casing |
EP1916682A1 (en) | 2006-10-27 | 2008-04-30 | Bticino S.P.A. | Interlock device for electrical apparatuses and group of parts including such device |
EP2073231A1 (en) * | 2007-12-21 | 2009-06-24 | BTICINO S.p.A. | Interlock device for electrical circuit breakers, kit of parts including such device, and multipole circuit breaker |
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DE102005038629B3 (en) * | 2005-08-10 | 2006-12-21 | Siemens Ag | Locking mechanism for switch e.g. circuit breaker in electrical distribution has force transmission unit swivelable by pivoted and crank levers, which are coupled with drive shaft of commutator and/or with adjacent commutator |
CN101101821B (en) * | 2006-07-03 | 2010-07-21 | 浙江正泰电器股份有限公司 | Circuit breaker set with interlocking apparatus |
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2010
- 2010-02-23 IT ITRM2010A000072A patent/IT1398379B1/en active
- 2010-11-26 EP EP10192734A patent/EP2360706B1/en active Active
- 2010-11-26 PL PL10192734T patent/PL2360706T3/en unknown
-
2011
- 2011-01-18 CN CN201110024367.3A patent/CN102163509B/en active Active
- 2011-02-22 RU RU2011106782/07A patent/RU2558397C2/en not_active IP Right Cessation
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EP0383700A1 (en) * | 1989-02-16 | 1990-08-22 | Merlin Gerin | Interlocking module for two electrical switch apparatuses in a miniature moulded casing |
EP1916682A1 (en) | 2006-10-27 | 2008-04-30 | Bticino S.P.A. | Interlock device for electrical apparatuses and group of parts including such device |
EP2073231A1 (en) * | 2007-12-21 | 2009-06-24 | BTICINO S.p.A. | Interlock device for electrical circuit breakers, kit of parts including such device, and multipole circuit breaker |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
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RU2562451C1 (en) * | 2011-11-17 | 2015-09-10 | АББ Технолоджи Лтд. | Mechanism of mutual blocking for switching devices |
EP2669923A1 (en) * | 2012-06-01 | 2013-12-04 | General Electric Company | Circuit breaker and method of tripping a circuit breaker |
WO2014029560A1 (en) * | 2012-08-22 | 2014-02-27 | Siemens Aktiengesellschaft | Handle and circuit breaker, multistage circuit breaker and circuit breaker with accessory part |
Also Published As
Publication number | Publication date |
---|---|
CN102163509B (en) | 2015-01-14 |
ITRM20100072A1 (en) | 2011-08-24 |
RU2011106782A (en) | 2012-08-27 |
CN102163509A (en) | 2011-08-24 |
EP2360706B1 (en) | 2012-06-20 |
RU2558397C2 (en) | 2015-08-10 |
PL2360706T3 (en) | 2012-11-30 |
IT1398379B1 (en) | 2013-02-22 |
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