FR2756412A1 - CUTTING APPARATUS SUCH AS AN INVERTER SWITCH FOR AN ELECTRICAL INSTALLATION - Google Patents

Abstract

The invention concerns a switchgear, such as a change-over switch, with very good quality/price ratio, enabling new switching combinations and simple and inexpensive production of different types of switchgear. The switchgear (1) comprises two superposed switching blocks (10, 20) each associated with an actuating block (30, 40) and a control block (60) provided with a control shaft (64) connected to a handle (61) for simultaneously controlling said actuating blocks (30, 40). This switchgear (1) is characterised in that the actuating blocks (30, 40) are superposed back to back and are arranged between the mutually inverted switching blocks (10, 20). The actuating blocks (30, 40) comprise a mechanism with modifiable configuration. Likewise, the connection points between this mechanism and the control shaft (64) can also be modified, thus resulting in five switching combinations between the switching blocks. The invention is applicable to electrical installations in general.

Description

CUTTING APPARATUS SUCH AS AN INVERTER SWITCH
FOR AN ELE CTRIO UE INSTALLATION
The present invention relates to a switchgear device such as a reversing switch for an electrical installation, this device comprising at least two superimposed cutoff units, each cutoff unit comprising at least two pairs of terminals intended to be connected to at least two phases of said installation. at least two pairs of fixed contacts coupled to said terminals and at least two movable contacts at two stable positions, a closed position in which each movable contact connects the fixed contacts of a same pair to establish the passage of electric current and an open position wherein each movable contact separates said fixed contacts to interrupt the passage of said electric current, the movable contacts being mounted on a common movable bar arranged to move in translation, said apparatus also comprising at least two actuating blocks, each being arranged to move said movable bar of the block of e corresponding cutoff, and a control block provided with a control shaft can be coupled to a handle and arranged to simultaneously control said actuating blocks.

Such switching devices are generally used for the distribution of low voltage single-phase, three-phase or four-phase, intensity ranging from a few tens to several hundred amperes. They provide switching, source reversal or load switching of two low voltage power circuits as well as their safety isolation. To obtain a switching device equivalent to a reversing switch, two standard switches placed in the same direction are superposed in a known manner, each consisting of a breaking block, its actuating block and its control block. which requires having all the pieces in duplicate. Then the control handle of the upper switch is coupled to the two actuating blocks by lengthening the control shaft of said control block by a specific shaft extension, the attachment points of the connecting rods provided in the blocks. actuation being modified on the control shaft. The handle can have three stable positions, a middle position "0" and two positions "I", "II" on either side of the median position, for example at 65 "and at + 65". The reversing switches of this type only make it possible to obtain only two switching combinations: in the first combination, one of the switches is closed when the other is open and, in the middle position, the two switches are open. In the second combination, one of the switches is closed when the other is open and, in the middle position, the two switches are closed simultaneously.

To obtain a switch called "bypass", used to isolate and bypass a low-voltage installation or circuit mainly during maintenance operations, three standard switches are superimposed in a known manner in the same direction, which requires have all the coins in triplicate. The control shaft of the handle must also be completed with a specific shaft extension.

For an installation with six or eight phases or poles, two standard switches are joined together in a known manner, which also requires having all the pieces in duplicate. Then, the control handles are connected by a mechanical coupling device generally consisting of a complex linkage that allows to transmit the movement performed on a handle to the other handle.

These methods of assembly as practiced so far require a large number of standard parts and references, not necessarily required as control blocks in duplicate or triplicate, which generates an additional cost. Likewise, additional specific parts and references are required for each type of cut-off device made. These additional parts generate additional cost, assembly time and space.

All the useful parts therefore represent significant manufacturing, storage and management costs. Moreover, the number of switching combinations is limited to two.

Therefore, the object of the present invention is to overcome the disadvantages mentioned above by providing a switchgear, such as a reversing switch, in which the actuating block and the control block have been analyzed. of value and have been optimized to reduce the number of parts and references needed, facilitate assembly, allow the realization simply and cheaply of a device of the "bypass" type or a device with 6 or 8 poles . In addition, the optimization of said blocks allows oflhr a number of switching combinations greater than two. As a result, a breaker device is obtained with a better quality / price ratio with new functions. The reduction and simplification of the number of parts and references favor the reduction of the cost price of the whole and simplifies the management. For example, the number of parts and references can be divided by three compared to standard switchgear.

This object is achieved by a cutting apparatus as defined in the preamble and characterized in that the actuating blocks are superposed back to back and are arranged between the cut blocks inverted with respect to each other.

The actuating blocks may each comprise a housing provided with at least one bottom, the two housings being arranged to fit together in the other at their bottom or may comprise a single housing and common provided with at least a central wall constituting the bottom of each actuating block.

In a preferred embodiment of the invention, each actuating block comprises at least one connecting rod coupled to one of its control pole ends and a driving rod pivotally mounted about a central axis fixed on said housing and coupled to firstly at the free end of the connecting rod and secondly at the movable bar of the corresponding cutoff block.

Similarly, each actuating block comprises an energy storage device in the form of a spring provided with two free ends, rune being integral with the housing and the other of the drive rod, this spring for switching quickly the corresponding cutoff block.

The drive rod is preferably coupled to the bar by at least one lug housed in a corresponding recess provided in said bar and defined by two stops, this lug being secured to the corresponding free end of the spring.

In the preferred embodiment, the drive rod is coupled to the connecting rod by at least a first trunnion, this trunnion being guided in a first groove provided in said housing and extending over a circular arc centered on a pivoting axis. of said drive rod.

The groove may extend over an angular sector slightly smaller than 1800, the housing having a second identical groove, diametrically opposite, arranged to guide a second pin provided on the drive rod to opposite the first pin.

Advantageously, the connecting rod, the driving link and the spring are removable parts, their configuration being modifiable so as to create several switching combinations between the two cutoff blocks.

In the preferred embodiment of the invention, the control shaft is guided in rotation in the body of said control block and is coupled to a handle accessible to the exterior of the unit, this control shaft being coupled to the connecting rods of the two blocks. actuation at two distinct pivot points.

The control shaft advantageously comprises two facing disks parallel to each other and perpendicular to the rotation axis Y of control marble, each disk having at least one pivot arranged to be housed in a suitable housing provided in the corresponding rod.

Preferably, the housing provided in the end of the rods mounted on the control marble pivots has an oblong shape arranged to allow a clearance of operation between the shaft and the corresponding connecting rod.

According to the preferred embodiment, at least one disk has at least two locations adapted to receive said pivot so as to change the pivot point of the rods on said control shaft.

In one of the alternative embodiments of the invention, the rods have a first defined length, the pivots receiving the rods on the control charge are arranged symmetrically with respect to the longitudinal axis X of the apparatus passing through the axis of rotation Y of marble of control and control marble has three stable positions corresponding to three positions of the handle: a middle position "0" and two positions "I" and "11" at right angles on either side of the middle position.

In the alternative embodiment of the invention, the rods have a second defined length less than the first length, the pivots receiving the rods on the control plate are diametrically opposed relative to the rotation axis Y of control Marble and the control shaft has two stable positions corresponding to two positions "I" and "II" at right angles to the handle.

The control shaft advantageously comprises at least one cam arranged to actuate at least one auxiliary contact mounted in said apparatus, the body of the control block being provided with at least one inner housing for receiving said auxiliary contact.

Advantageously, the control axis has at its end opposite to the control handle a square section arranged to control a third cutoff unit provided on said apparatus.

The present invention and its advantages will become more apparent in the following description of an exemplary embodiment, with reference to the appended drawings, in which: FIG. 1 is a perspective view of a four-pole cut-off device according to the invention, FIG. a partial and exploded view of a three-pole breaking apparatus, showing the actuating block and the raised upper cutoff block; - Figure 3 is a view of the control shaft, the two actuating mechanisms and the block 4 is an elevational view of the control shaft and auxiliary contacts, FIG. 5 is a top view of the actuating block, FIG. 6 is a sectional side view. along the axis VI-VI of Figure 5, - Figure 7 is a view similar to Figure 5 being switched, - Figures 8a, 8b to 12a, 12b are respectively a top view of the actuating block upper and a bottom view of the actuation block Bottom illustrating five possible mounting and switching configurations.

With reference to FIG. 1, the breaking apparatus 1 according to the invention corresponds to a reversing switch and comprises two superimposed cutoff blocks 10, 20, an upper block 10 and a lower block 20, which are turned over relative to one another. to the other. n also comprises two actuating units 30, 40, one for each cutoff unit, arranged back to back and grouped in a common housing 50 mounted between the two cutoff units 10, 20. n finally comprises a control block 60 disposed generally to the right of the actuating blocks 30, 40 and provided with a control shaft 64 which can receive a control handle 61. It is a handle with three stable positions, a middle position called "0" and two positions called "I" and "II" at right angles to either side of the middle position, a total operating angle of 1800. Each cutoff block 10, 20 comprises, in known manner, at least two and, in this case, four pairs of connection terminals 11, 21 intended to be connected to the electrical conductors of an installation, in this case, four-pole, or three phases and a neutral. Also in known manner, each breaking block 10, 20 comprises as many pairs of fixed contacts as pairs of connection terminals and as many moving contacts as pairs of fixed contacts. The movable contacts are mounted on a movable bar arranged to slide in translation between two stable positions: a closed position when the movable contacts connect the corresponding pairs of fixed contacts and that the electrical connection is provided, and an open position when the movable contacts separate the corresponding pairs of fixed contacts and that the electrical connection is interrupted. The movable bar of each cutoff block 10, 20 is actuated by its actuating block 30, 40, which is controlled by the control block 60. This control block 60 is closed in its upper part by a plate called "plastron "62 and can be opened in its lower part. n has a height equivalent to that of the upper cutoff block 10 and actuating blocks 30, 40. It does not need to extend beyond. The cutoff blocks 10, 20 and actuating units 30, 40 are nested in each other by means of complementary profiles and are held by fastening screws 12 visible in FIG. 1 on the upper face of the upper cutoff block 10. .

With reference to FIG. 2, the cut-off device 1 according to the invention is shown partially and in an exploded view. The control handle and the lower cutoff block have been removed. The faceplate 62 and the upper cutoff block 10 have been raised to show the inside of the upper actuator block 30, the inside of the control block 60 and the underside of the upper cutoff block 10 with its movable bar 13. In this embodiment, the actuating blocks 30, 40 are grouped in the common housing 50 provided with lateral walls 51 and a median wall 52 separating the housing 50 in two equal parts in the direction of its height, this central wall 52 constituting the bottom of each actuating block 30, 40. As can be seen in this figure, the common housing 50 is made in one piece with the body 63 of the control block 60 to simplify their manufacture and assembly.

Of course, it is also possible to make this common housing 50 in two separate housings, identical and nestable, one for each actuator block 30, 40. This embodiment is advantageous because it allows to manufacture simple switches with the same housing. The control block 60 comprises a control shaft 64 guided in rotation in the body 63, this shaft being connected to the control handle 61 by square coupling 65. The actuating blocks 30, 40 are identical but reversed one by one. relative to each other since they are placed back to back on both sides of the central wall 52 of the common housing 50. The same parts will bear the same reference. Each actuating block 30, 40 comprises a connecting rod 31 whose first end is coupled to the control shaft 64 and a driving rod 32 pivotally mounted about a central axis 33 fixed relative to the housing 50. Said connecting rod -32 is coupled firstly to the second end of the connecting rod 31 and secondly to the movable bar 13 of the corresponding cutoff block 10, 20.

Each actuating block 30, 40 also comprises an energy storage device in the form of a spring 34, more precisely constituted by a torsion spring, provided with two free ends 35, 36, one of which integral with the housing 50 and the other 36 secured to the link 32. This torsion spring 34, allowing the mechanism to react abruptly, accelerates the switching of the movable bar 13 and consequently the switching of the corresponding moving contacts, that is to say say the transition from the open position to the closed position and vice versa. The link between the connecting rod 31 and the rod 32 is made around a first pin 37 guided in a first arcuate groove 38 provided in the housing 50 and extending over an angular sector slightly smaller than 1800, of which the center is coincident with pivoting axis 33 of the rod 32. A second pin 39 is provided on the rod 32, diametrically opposed to the first 37, and arranged to slide in a second groove 41 identical, of the same center and symmetrical. The connection between the rod 32 and the movable bar 13 of the corresponding cutoff block 10, 20 is effected by a pin 42 integral with the rod 32 and housed in a recess 14 formed in the bar
13. This recess is delimited by two abutments 15, 16 allowing translational movement of the pin 42 relative to the bar 13. This post 42 is biased by the spring 34, its corresponding free end 36 being housed in a through hole 43 provided in said stud 42. Of course, other suitable fastening means can be envisaged. All parts of an actuating block 30, 40, namely the rod 31, the drive rod 32 and the spring 34, are assembled by interlocking and are therefore easily removable. This makes it possible to change their respective positions in the same operating block 30, 40 and from one block to another. The various configurations obtained make it possible to achieve different combinations of switching between the two cutoff blocks 10, 20. For example, the rod 32 can be coupled to the rod 31 at its end bearing the post 42. Similarly, the link 32 can be positioned in the other direction, the position of the spring being also modified. These different configurations are detailed below.

FIG. 3 partially illustrates apparatus 1 of FIG. 2 and in particular the lower cut-off block 20 with its mobile bar 13, control marble 64 and the two actuating blocks 30, 40 without the springs or the common housing 50. clearly the link rods 31 on control marble 64. This control shaft 64 comprises two disks 66, 67 parallel to each other and perpendicular to Y axis of rotation of said shaft, each disk being provided with a pivot 68, 69 for each connecting rod 31. The two pivots 68, 69 are not superimposed directly, they are offset with respect to each other. Their respective position on their disk 66, 67 can be modified as will be seen later. The corresponding end of each rod 31 has an elongate housing 44 adapted to receive its pivot 68, 69, which leaves the rod 31 a certain clearance in its movement relative to control marble 64, whose interest is explained below. This figure illustrates the connecting rods 31 and drive rods 32 of the two actuating blocks 30, 40 in the same configuration but returned rune relative to each other. The post 42 of the rod 32 of the lower actuating block 40 is housed in recess 14 of the movable bar 13 of the lower cut-off block 20. Note also the trunnions 37 connecting the links 32 with the rods 31.

Referring also to FIG. 4, the control box 64 comprises from top to bottom: a hollow square section 65 for receiving the handle disposed outside the plastron 62, which is held by a pin in a corresponding hole 65 '; circular section 70 to guide in rotation the shaft 64 in the plastron 62, - vanes or cams 71 angularly offset rune relative to the other, - the two disks 66, 67 carrying the pivots 68, 69 connecting rods 31 and connected by a partially circular flirt 72, a circular section 73 for rotating guide Marble 64 in the body 63 of the control block 60, and a full square section 74 for controlling a possible third actuating block.

The cams 71 are arranged to control auxiliary contacts 80 as a function of the Marble control position 64. One or more auxiliary contacts 80 opening or closing are generally associated with each cutoff block to allow transmission via an electrical connection. information relating to the position of these breaking units 10, 20 towards one or more control or monitoring circuits (auxiliary relays, PLCs, alarms, etc.). In particular, the auxiliary contacts provide a pre-cut information to downstream connected equipment to trigger before the triggering of the cutoff block or blocks concerned. These auxiliary contacts 80 are of the standard type and comprise an actuating piston 81 directly controlled by the cams 71 provided on control board 64. If necessary, complementary auxiliary contacts 82 may be added opposite the lute 72. In this case, these auxiliary contacts 82 are controlled by a vane device 83 actuated by said lute 72. All these auxiliary contacts 80, 82 are easily housed and fixed by screws in the control block 60 by means of the longitudinal grooves 75 and 76 provided supports in the body 63 of this block, visible in Figure 2.

FIGS. 5 to 7 illustrate in greater detail the actuating blocks 30, 40 and the control block 60. FIG. 5 is a view from above of the upper actuating block 30 in which control marble 64 is found, the connecting rod 31, its pivot connection 68 shown in dotted lines with Control Marble 64, the drive rod 32, its fixed pivot axis 33, its two journals 37, 39 guided in the corresponding grooves 38, 41, the actuating pin 42 of the movable bar 13 and the spring 34. FIG. 6 is a cross-section of FIG. 5 showing the upper and lower actuating blocks 40, the common housing 50 and the control marble 64. It is clear from this figure that the parts forming each actuating block 30, 40 are arranged in a reverse manner to correspond to their cutoff block 10, 20 also reversed. Figure 7 illustrates the actuating block 30 of Figure 5, control marble 64 having rotated about 45 "counterclockwise along arrow F.

The operation of the operation blocks 30, 40 is now described with reference to this FIG.

To move from one stable position to the next, control marble 64, and therefore the handle 61, must be rotated 90, a rotation of 1800 to go from the "I" position to the "II" position through the intermediate position "0". The upper cutoff block 10 engages in the closed position by a rotation of the control shaft 90 "counterclockwise (arrow F) while the lower cutoff block 20 engages in closed position by a rotation of marble control 90 "clockwise (arrow G). During these rotations, the following movements are carried out jointly: - translation of the connecting rod 31, - rotation of the drive rod 32 about its axis 33, - stress on the spring 34 and energy accumulation then, passed raxe central Z passing through the center of the grooves 38, 41 and pivoting axis 33 of the rod 32, recovery of accumulated energy generating a sudden actuation of the link 32, - translation of the movable bar 13 of the cutoff unit 10, 20 corresponding to the pin 42 of the drive rod 32 housed in the recess 14 of said bar.

An operating clearance between the movable bar 13 and the pin 42 thanks to the interval between the stops 15, 16 provided on said bar, and between the rod 31 and control marble 64 thanks to the oblong housing 44 provided in said connecting rod, allows This sudden actuation ensures latching and triggering of the breaking blocks 10, 20 in a very short period of time, independently of the operating speed of the handle 61. The elongate housing 44 provided on the rods 31 also ensures the momentary disengagement of the corresponding actuating block during the operation of the other actuating block.

To switch the cutoff blocks 10, 20 in opposite direction, it is sufficient to operate the control shaft 64, that is to say the handle 61, in opposite direction causing the reverse movements of the rod 31, the link 32 and spring 34.

Figures 8 to 12 illustrate the different possible configurations of the actuating blocks 30, 40 and therefore the different switching combinations obtained for each configuration with the apparatus 1 according to the invention. The figures bearing index A represent the upper actuating block 30 in top view and the figures bearing Index B represent the lower actuating block 40 in a view from below. To simplify the explanation which follows, the switching positions of the breaking blocks 10, 20 are symbolized by "1" for the closed position and by "0" for the open position. Similarly, the positions of the handle 61 or control marble 64 are symbolized by "0" for the median position, by "I" for the position at 90 in the counterclockwise direction (arrow F) by ratio "0" and by "II" for the 90 position clockwise (arrow G) relative to "O".

As previously stated, the respective position of the rods 31, rods 32 and springs 34 may vary. Similarly, the position of the pivots 68, 69 can be modified. It is specified that these modifications are made at the factory during assembly of the devices and according to the specific needs of the customer. In FIGS. 8 to 10, all the parts are identical from one configuration to another and the pivots 68, 69 are arranged symmetrically with respect to the longitudinal axis X. In these figures, the configuration of the actuating blocks 30, 40 shown corresponds at the middle position "0" of the handle 61.

In FIGS. 8A and 8B, the rods 31, rods 32 and spring 34 are arranged as in the preceding figures. The connection between the connecting rod 31 and the rod 32 of each actuating block 30, 40 is effected on the first pin 37 housed in the first groove 38 and the spring 34 is substantially in the central axis Z. The combination is obtained following switching:

<tb> block <SEP> of <SEP> break <SEP> sup. <SEP> 10 <SEP><SEP><SEP> handle <SEP> (angle) <SEP> | <SEP> block <SEP> of <SEP> break <SEP> inf. <SEP> 20
<tb><SEP> 1 <SEP> | <SEP> 90) <SEP> 0
<Tb>

<tb> o <SEP> o <SEP> (o) <SEP> o
<tb> O <SEP> ll (+ 90o) <SEP> 1
<Tb>
This combination makes it possible to obtain a reversing switch with three stable positions with, in the intermediate position, the two cutoff blocks 10, 20 in the open position.

In FIGS. 9A and 9B, the connection between the connecting rod 31 and the link 32 of each actuating block 30, 40 is effected on the second pin 39 housed in the second groove 41 and the spring 34 is off-center with respect to the axis. central Z. The following switching combination is obtained:

<tb> block <SEP> of <SEP> break <SEP> sup. <SEP> 10 <SEP> handle <SEP> (angle) <SEP> block <SEP> of <SEP> cut <SEP> inf. <SEP> 20
<tb><SEP> 1 <SEP> I (-90) <SEP> 0
<tb><SEP> 1 <SEP> 0 (0) 1
<tb><SEP> 0 <SEP> II (+90)
<Tb>
This combination makes it possible to obtain a switch-reverser with contact overlap, in three stable positions with an intermediate position where the two cutoff blocks 10, 20 are in the closed position.

In FIGS. 10A and 10B, the link between the connecting rod 31 and the rod 32 of the upper actuating block 30 is effected on the second pin 39 housed in the second groove 41 and the spring 34 is off-center with respect to the axis Z. The connection between the connecting rod 31 and the rod 32 of the lower actuating block 40 is performed on the first pin 37 housed in the first groove 38 and the spring 34 is centered.
This combination makes it possible to obtain a switch with superposition with three stable positions with, in position "II", the superposition of the two cutoff blocks 10, 20 in the closed position.

In FIGS. 11 and 12, the rods 31 are slightly shorter than those used in the previous figures and the pivots 68, 69 on the control plate 64 are diametrically opposed. It is the position of the pivot 68 corresponding to the upper actuating block 30 which is modified. In this case, the middle position "0" of the handle 61 no longer exists, the two positions "I" and "II" being obtained by a rotation of 90 ".

In FIGS. 1A and 11B, the link between the connecting rod 31 and the rod 32 of the upper actuating block 30 is effected on the second pin 39 housed in the second groove 41, the spring 34 being in the central axis Z. The connection between the connecting rod 31 and the rod 32 of the lower actuating block 40 is performed on the first pin 37 housed in the first groove 38, the spring being also in the central axis Z. The following combination is obtained:

<tb> block <SEP> of <SEP> break <SEP> sup. <SEP> 10 <SEP> ~ <SEP><SEP> handle <SEP> (angle) <SEP> block <SEP> of <SEP> cut <SEP> inf. <SEP> 20
<tb><SEP> O <SEP> 1 (0) <SEP> o <SEP>
<tb><SEP> 1 <SEP> li (+900) <SEP> 90) <SEP>
<Tb>
This combination makes it possible to obtain a simple switch with two stable positions with, in the "I" position, the two cutoff blocks 10, 20 in the open position and, in the "it" position, the two cutoff blocks 10, 20 in the "I" position. closed position.

In FIGS. 12A and 12B, the link between the connecting rod 31 and the rod 32 of the upper actuating block 30 is effected on the second pin 39 housed in the second groove 41, the spring 34 being in the central axis Z. The link between the connecting rod 31 and the rod 32 of the lower actuating block 40 is effected on the second pin 39 housed in the second groove 41, the spring being off center relative to the central axis Z.

The following switching combination is obtained:

<tb> block <SEP> of <SEP> break <SEP> sup. <SEP> 10 <SEP> ~ <SEP><SEP> handle <SEP> (angle) <SEP> block <SEP> of <SEP> cut <SEP> inf. <SEP> 20
<tb><SEP> 1 <SEP> I (0) <SEP> 0 <SEP>
<tb><SEP> 0 <SEP> II (+90) <SEP> 1 <SEP>
<Tb>
This combination makes it possible to obtain a reversing switch with two stable positions.

In addition to the multiple switching combinations detailed above, the design of the operation blocks 30, 40 and the control block 60 allows great flexibility of use.

To obtain a simple switch with three or four poles, it is sufficient to equip only the housing 50 of the actuating block corresponding to the breaking block.

To make a switch with six or eight poles, two simple switches with three or four poles, as described above, are juxtaposed. In this case, a different and specific connecting rod is used to simultaneously control the two juxtaposed cutoff blocks and the location of the pivot on the control shaft is modified.

To produce a bypass switching device associated with a reversing switch, a simple switch is added under the lower cut-off unit of the apparatus 1 according to the invention. In this case, the square end 74 of control marble 64 of the control block 60 is directly housed in the upper end of the control shaft of this switch.

To produce a four-pole apparatus for an installation comprising three phases and a neutral, as illustrated in FIG. 1, the common housing 50 comprising the actuating blocks 30, 40 can be used without modification despite the difference in length of the breaking blocks 10 20. A simple "spacer" housing 55 may be interposed between the two cutoff units 10, 20 extending from the common housing 50. This "spacer" housing has no actuating mechanism since the moving contact corresponding to the neutral of each cutoff block 10, 20 is mounted on the movable bar, which is actuated by said actuating blocks 30, 40 as described above.

Of course, all combinations between these different devices are possible. It is clear that cutting apparatus 1 according to the invention achieves all the aforementioned purposes. The present invention is of course not limited to the embodiments described but extends to any modification and variation obvious to a person skilled in the art.

Claims (18)

claims Switchgear device (1) such as an inverter switch for an electrical installation, this apparatus comprising at least two superimposed cutoff blocks (10, 20), each cutoff block having at least two pairs of terminals (11) for to be connected to at least two phases of said installation, at least two pairs of fixed contacts coupled to said connection terminals and at least two movable contacts at two stable positions, a closed position in which each movable contact connects the fixed contacts of a same pair for establishing the passage of the electric current and an open position in which each movable contact separates said fixed contacts to interrupt the passage of said electric current, the movable contacts being mounted on a common movable bar (13) arranged to move in translation, said apparatus also comprising at least two actuating blocks (30, 40), each being arranged to move said bar u mobile (13) of the corresponding cutoff unit (10, 20) and a control block (60) provided with a control shaft (64) which can be coupled to a handle (61) and arranged to simultaneously control said control blocks actuation (30, 40), characterized in that the actuating blocks (30, 40) are superposed back-to-back and are arranged between the cut-off blocks (10, 20) inverted with respect to one another . 2. Apparatus according to claim 1, characterized in that the actuating blocks (30, 40) each comprise a housing provided with at least one bottom, the two housings being arranged to fit into one another at their bottom. 3. Apparatus according to claim 1, characterized in that the actuating blocks (30, 40) comprise a single and common housing (50) provided with at least one central wall (52) constituting the bottom of each block of actuation. 4. Apparatus according to claim 2 or 3, characterized in that each actuating block (30, 40) comprises at least one connecting rod (31) coupled to one of its ends with rare control (64) and a connecting rod of drive (32) mounted pivotably about a fixed central axis (33) on said housing (50) and coupled on the one hand to the free end of the connecting rod (31) and on the other hand to the movable bar (13) the corresponding cutoff block (10, 20). 5. Apparatus according to claim 4, characterized in that each actuating block (30, 40) comprises an energy storage device in the form of a spring (34) provided with two free ends, rune (35). ) being integral with the housing (50) and the other (36) of the drive link (32), this spring (34) for quickly switching the corresponding cutoff unit (10, 20). 6. Apparatus according to claim 5, characterized in that the drive rod (32) is coupled to the movable bar (13) by at least one pin (42) housed in a recess (14) corresponding provided in said bar (13). ) and delimited by two stops (15, 16), this pin being integral with corresponding free end (36) of the spring (34). 7. Apparatus according to claim 4, characterized in that the drive rod (32) is coupled to the connecting rod (31) by at least a first pin (37, 39), this pin being guided in a first groove (38). , 41) provided in said housing (50) and extending over a circular arc centered on a pivoting axis (33) of said drive link (32). 8. Apparatus according to claim 7, characterized in that the groove (38, 41) extends over an angular sector slightly smaller than 1800, the housing (50) having a second identical groove (38, 41), diametrically opposite and arranged to guide a second trunnion (37, 39) provided on the drive link (32) to the first trunnion (37, 39). 9. Apparatus according to claim 8, characterized in that the connecting rod (31), the driving rod (32) and the spring (34) are removable parts, their configuration being modifiable so as to create several switching combinations between the two cutoff blocks (10, 20).  10. Apparatus according to claim 4, characterized in that control marble (64) is guided in rotation in the body (63) of said control block (60) and is coupled to a handle (61) accessible outside of reclaimer (1), this control shaft being coupled to the connecting rods (31) of the two actuating blocks (30, 40) at two distinct pivot points. 11. Apparatus according to claim 10, characterized in that control marble (64) comprises two discs (66, 67) opposite, parallel to each other and perpendicular to the rotation axis Y of control rarbre (64), each disc comprising at least one pivot (68, 69) arranged to be housed in a suitable housing (44) provided in the corresponding connecting rod (31). 12. Apparatus according to claim 11, characterized in that the housing (44) provided in the ends of the rods (31) mounted on the pivot (68, 69) of control marble (64) has an oblong shape arranged to allow a set operating between the shaft (64) and said rod (31). 13. Apparatus according to claim 12, characterized in that at least one disc (66, 67) comprises at least two locations adapted to receive said pivot (68, 69) so as to modify the pivot point of the connecting rods (31). on said control shaft (64). 14. Apparatus according to claims 9 and 13, characterized in that the rods (31) have a first defined length, in that the pivots (68, 69) receiving the control rods (64) are arranged symmetrically relative to each other. with longitudinal axis X of the reference plate (1) passing through the rotation axis Y of the control marble (64), and in that the control plate (64) has three stable positions corresponding to three positions of the handle (61): a position median "0" and two positions "I" and "II" at right angles on both sides of the median position.  15. Apparatus according to claims 9 and 13, characterized in that the rods (31) have a second defined length less than the first length, in that the pivots (68, 69) receiving the connecting rods (31) on the shaft (64) are diametrically opposed to the control column rotation axis Y (64), and in that Marble control (64) has two stable positions corresponding to two positions "I" and "II" at right angles to the handle (61).  16. Apparatus according to claim 10, characterized in that the control shaft (64) comprises at least one cam (71) arranged to actuate at least one auxiliary contact (80) mounted in said apparatus (1). 17. Apparatus according to claim 16, characterized in that the body (63) of the control block (60) is provided with at least one inner housing (75, 76) for receiving said auxiliary contact (80). 18. Apparatus according to claim 10, characterized in that control marble (64) has at its end opposite to the control handle (61) a square section (74) arranged to control a third cutoff unit provided on said apparatus ( 1).