RU2619070C2 - Control device average voltage electric distribution unit and distribution unit controlled by similar device - Google Patents

Abstract

FIELD: electricity.

SUBSTANCE: control device for the average voltage electric distribution protective gear comprises an electrical switching unit including at least one opening actuation component (7) and at least one closing actuation component that are configured to transmit the control command on at least one contact opening component (15) and at least one closing contact component (12), respectively, via a mechanical connection. The device also includes means for the mechanical communication interrupting. The closing component (12) and the opening component (15) are arranged substantially facing the actuating component (6) of the manual closing and the actuating component (5) of the manual opening respectively. The mechanical link includes a part (24) attached to the closing component (12) which comprises a retractable element (25) made movable between the first position in which the element is configured to interact with the actuator (18) of the actuating component (6) and the second position in which the element (25) is retracted. The displacement of the element from the deployed position to the retracted position is controlled by the closed state of the contacts, or held opening command for the contacts, or by actuating the locking means for accessing the drive shaft (1) for controlling the contacts of the switching unit.

EFFECT: simplified design and operation.

20 cl, 22 dwg

Description

Technical field

The present invention relates to a control device for a medium voltage electrical distribution switchgear arranged between two parts of an electric circuit so as to provide current flow or to interrupt current between these parts, the switchgear including an electrical switching unit configured to provide a closed position for the flow of current or an open position for the flow of current, and the switching unit includes, alternately at least one actuating component designed to open the contacts of the unit and at least one actuating component designed to close the contacts; moreover, the actuating components, respectively, for opening and closing, are configured to transmit a control command to at least one opening component and at least one closing component, respectively, for contacts via mechanical communication, and the control device also includes a means of interrupting mechanical communication in such a way as to make any actuation of any closing actuating component ineffective in cases where the closing command should not be implemented to ensure the safety of people or facilities; moreover, the above locking and opening components are mounted for rotation around two axes, which are essentially parallel with respect to each other, and closing and / or opening of the contacts is achieved using the actuating component of the opening, actuating the rotation of the opening element or, respectively, with using an actuating component of the circuit, actuating the rotation of the component circuit.

State of the art

There are known mechanical interlocking devices with which circuit breaker mechanisms are equipped and which are designed to carry out various protective functions of these mechanisms, such as preventing a short circuit, if a supported opening command has already been given, or if the device is already closed.

However, these devices are integrated into the internal mechanism of the device and their design is complex.

In addition, these devices cannot be placed on the front panel and do not allow changing the type of buttons used for local manual control.

An object of the present invention is a control device for a switchgear, which has a simple structure and which is arranged to be placed on the front side of the switchgear, and provides a change in the type of local manual control buttons.

To this end, the object of the invention is a control device for an electric switchgear for medium voltage protection of the aforementioned type, moreover, this device is characterized in that the aforementioned closing and opening components are located essentially facing the closing actuation component and the opening actuation component, respectively, and that the aforementioned mechanical connection includes a part attached to the closure component, said part including a sliding element configured to move between a first position in which the sliding element is configured to interact with an actuating element of a closing component so as to transmit a closing command to the closing component and a second position in which the element is retracted and is no longer able to interact with said element of the closing component, the displacement of the element from the deployed position to the retracted position is controlled using the closed state of the contacts or supports live opening command for the contacts, or by actuating the locking means to access the travel shaft to control the contacts of the switching unit.

Thus, due to these features, it is possible to use push-controlled buttons including an actuating element configured to move, or rotary knobs including an actuating element configured to move with rotation in order to rotate either a sliding element or executive component of opening.

According to a particular feature, the distribution device further includes a grounding device connected in series with said distribution unit, this control device is characterized in that it further includes a locking device controlled by a selector adapted to move between a first position in which the access hole to the running shaft for controlling the switching unit is free, and the hole for accessing the shaft for controlling the ground shaft is closed, and the second position corresponding to the intention of grounding or actual grounding, and in which the hole for accessing the shaft to control the grounding shaft is open, while the hole for accessing the shaft for controlling the control device is closed, while the offset of the sliding element between the two positions is controlled with using the crank lever of the locking device in order to prevent the block from closing when the selector is in the second position.

These features provide a combination of circuit breaker requirements or switch operation with interlock requirements with respect to the earthing switch.

According to another characteristic, the mechanical connection includes a part forming a support of the sliding element attached to the closure component and into which the sliding element forming the sliding element is inserted with the possibility of sliding.

According to another characteristic, this sliding element is controlled either by means of an indicator of the position of the contacts, or by means of a part forming a crank lever attached to the opening component through the crank lever means.

According to another feature, the sliding element is additionally controlled either by the crank lever of the locking device when the locking device is in the second position, or by fixing means for accessing the travel shaft to control the switching unit controlling the crankshaft of the above-mentioned locking means.

According to another feature, the locking device includes a first locking lever mounted to rotate freely around a control shaft for a switching unit and including a shutter configured to close or release an opening for accessing a running shaft to control a switching unit, a second locking lever, mounted with the possibility of rotation around the fixed axis of the support and including a sash made with the possibility of opening or closing the hole for up to a mortar to the ground shaft, said locking levers being mechanically connected by means of a connecting rod, and a selector with a pin passing through it, belonging to the first lever, the selector being mounted slidingly relative to the stationary support of the switchgear between two positions, the first locking lever includes cranked lever.

According to another feature, the locking device includes means for closing the shaft access hole for controlling the ground shaft when the block is in the closed position.

According to another feature, these means include a pin attached to a part that is mounted on the shaft to control the contacts of the switching unit and which forms a position indicator for the contacts, the pin interacting with the first locking lever.

According to another characteristic, these crank lever means include a first crank lever, called an indicator crank lever, mounted rotatably with respect to an axis belonging to the stationary support of the switchgear and including a first part cooperating with a part fixed to the control shaft for contacts the switching unit and the forming indicator, and the second crank lever, called the crank lever of the sliding element, mounted with the possibility of rotation of the wok yz second stationary axis of the dispenser support, wherein the second crank arm includes a first portion for engagement with the second portion of the first angled lever by means of two pins arranged on the second crank arm and a second portion for interaction with crank opening component.

According to another feature, these locking means include a latch that can be controlled by means of a key and which is adapted to be actuated by rotation of the cam, said cam being adapted to interact with the crank lever of the locking device so as to bring the device into a closed position or opening an opening for access to the control shaft to control the switching unit.

According to another characteristic, one or each opening element or a closing element is attached to the auxiliary opening shaft or, respectively, to the closing shaft, said auxiliary shafts being mechanically connected to the shaft for controlling the switching unit, each of the opening and closing components being held in a position corresponding to the closed , or, respectively, the open position of the contacts of the block using the locking device of the opening or, accordingly, the circuit, and this locking troystvo adapted to unlock by operating the respective component effect.

According to another feature, the sliding element includes two holes separated by a partition, one of the holes being intended to receive the end part of the closure component, said part being supported by the partition, the spring resting one end on a flat surface belonging to the aforementioned end part, and its the opposite end to the inner side of the sliding element, and the sliding element also includes a pin attached to the sliding element and designed zaimodeystvovat with crank sliding member so as to provide a translation of the slide from one position to another.

According to a particular characteristic, this device includes at least one manually operated opening button and at least one manually operated closing button, and the actuating element of each button, when it is actuated, is configured to interact with the sliding element , so as to power it by rotation.

According to another characteristic, one or each manually operated opening button and one or each manually operated closing button is located (located) on the front side of the switchgear, so as to be controlled by the user from this side.

According to another feature, one or each manually controlled opening component or component of the closure is a push-button button including an actuator configured to move to rotate the opening element or a sliding element, according to whether the button is used to open or short circuits.

According to another embodiment of the invention, one or each manually controlled opening or closing component is a rotary knob including an actuator rotatable to rotate the opening or sliding element, according to whether the handle is used for opening or for closing.

According to another particular embodiment of the invention, this device includes a single rotary knob, movable by rotation in one direction or in the other direction, in order to open or close, said handle including two actuating elements, movable by rotation in two opposite directions of rotation and configured to interact with an opening component or a sliding element, respectively.

According to another feature, this device includes at least one remote excitation coil, wherein the coil actuator interacts with the sliding element by means of a support including a blade mounted to rotate freely around the circuit component, the support including a part, interacting with a part of the sliding element in such a way that the excitation of the coil causes, by means of the blade, the support and the sliding element to rotate, and thus rotates component of the circuit.

According to another characteristic, the switching unit is a vacuum circuit breaker or a vacuum circuit breaker, while the grounding device is a grounding disconnector.

The invention also relates to a medium voltage electrical distribution switchgear including an opening component and a closing component, which are adapted to control opening and closing of the contacts. This distribution device is characterized in that it includes a control device including the aforementioned features individually or in combination.

The present invention relates to an electric medium voltage cell including at least one switchgear including the previously mentioned features individually or in combination.

Brief Description of the Drawings

Other features and advantages will become apparent upon reading a preferred embodiment of the invention, given by way of non-restrictive example and described with reference to the drawings, in which:

FIG. 1 is a plan view showing the inside of a control arrangement of an electric medium voltage cell according to the invention.

FIG. 2 is a detailed enlarged view showing more particularly a stop system for opening or closing an electrical circuit breaker or electrical cell switch.

FIG. 3 is a partial view showing a locking device called an opening locking device.

FIG. 4 is a partial view showing a locking device called a locking locking device.

FIG. 5 is a partial view showing a system of a sliding element according to the invention and a blade of a coil that are mounted on a crescent moon in the extended position of the sliding element.

FIG. 6 is a view similar to that in the previous drawing, in accordance with a different orientation, in the retracted position of the sliding element.

FIG. 7 is a view similar to that of FIG. 6, without support of the sliding element.

FIG. 8 is a view of FIG. 5 or 6 with spaced parts.

FIG. 9 is a partial perspective view showing a circuit breaker in a rear view with respect to FIG. 3 and 4, in the open position, ready for closure, before the closure button is actuated.

FIG. 10 is a plan view of FIG. 9 after the button support has been removed.

FIG. 11 is a view similar to that of FIG. 9, wherein the circuit breaker is in the closed position.

FIG. 12 is a plan view of FIG. 11 and includes a sectional view in order to show the device without support.

FIG. 13 shows the use of a blocking device to prevent the device from grounding.

FIG. 14 is a partial plan view showing a circuit breaker during a supported opening of the opening button.

FIG. 15 is a view similar to that of FIG. 14, but including a sectional view showing a portion of an electrical circuit breaker during a supported opening command with an opening coil.

FIG. 16 is a partial perspective view showing an interlock between the control shaft of the circuit breaker and the ground control shaft.

FIG. 16a and 16b are partial perspective views showing crank arm means according to the invention.

FIG. 17 is a partial plan view showing an electrical circuit breaker in a position ready to close, with the selector in the ground position.

FIG. 18 is a view similar to that of FIG. 17, on which the ground shaft is driven.

FIG. 19 is a partial perspective view showing the operation of the interlock stop in order to prevent access to the control shaft of the circuit breaker, and

FIG. 20, 21, and 22 are partial perspective views illustrating three possible embodiments of buttons for actuating a closure and opening.

Description of a preferred embodiment of the invention

In FIG. 1 shows an electric distribution cell C of medium voltage, designed to be placed between two parts of the circuit, so as to provide at least the functions, respectively, of the current flow between the parts, interruption of the current between the parts, disconnecting the circuit and grounding one of the parts of the circuit, such as the cell described in patent application FR 2940516 of the applicant.

This cell C includes a circuit breaker (or switch), preferably using a vacuum circuit breaker, such as a circuit breaker with a vacuum bulb, the circuit breaker also acting as a disconnector and a grounding device connected in series with the circuit breaker, including a selector S, with at least two positions, respectively, a position for current flow and a position for grounding one of the parts of the circuit, said circuit breaker (switch atelier) is connected electrically upstream, for example, with a common bus, and downstream with a selector S, which is connected electrically downstream, for example, at least one cable, and the cell is configured to occupy three positions, respectively, closed position, disconnected position and ground position.

In FIG. 1, this cell C includes a running shaft 1 for controlling a circuit breaker, mechanically connected to a running shaft 2 for contacts of a vacuum circuit breaker and configured to be manually controlled by a running lever, so as to manually open or close the contacts of the said breaker, or reset after opening, in accordance with the use of the cell, through an opening made in the casing of the switchgear.

This grounding device includes a shaft 3, intended for grounding the contacts of the circuit breaker and a shaft 4 for controlling this shaft.

Outside the case of opening the breaker contacts during the occurrence of an electrical fault on the line to be protected, the breaker contacts can be opened or closed using the opening buttons 5 and closing buttons 6 or using coils 7, 8 to open 7 or closing 8, respectively, and configured to remotely actuate.

The contacts of the vacuum interrupter are held in the open position or in the closed position with a locking device called a locking locking device 9, and with a locking device called a locking locking device 10, respectively.

Locking device 9, configured to hold energy to close the contacts of the interrupter in open or closed position, includes a hook 11, supported in a clamped position on the locking component 12, made in the form of a crescent moon and called a crescent moon, and this crescent is attached to the shaft 13, by means of which it moves with rotation around the fixed axis of the cell, this crescent and its associated shaft are mechanically connected to the control shaft 1 of the locking mechanism, so that o unlocking the locking device 9 of the circuit on the crescent moon 12 releases the shaft 1, which drives the running shaft 2 to move with the rotation of the circuit breaker in the direction of contact closure.

Similarly, the opening locking device 10, capable of holding the contacts of the opening switch in a closed position, includes a hook 14 that interacts with the opening component 15, called the opening crescent, this crescent is also attached to the shaft (not shown), by which it moves with rotation around the fixed axis of the cell, and this crescent 15 and the associated shaft are mechanically connected to the control shaft 2 for the movable contact (contacts) of the disconnector, so that the unlocking the open circuit device 10 on the crescent 15 actuates with rotation the travel shaft 2 for the circuit breaker in the direction of opening of the contacts.

These stoppers 9, 10 are subject to deactivation due to the operation of either the open button 5 or the closure button 6, or the open coil 7 or the closure coil 8, actuators 17, 18, 19, 20, which are configured to act on the respective crescents, or directly, when it comes to the opening stop 10, or by mechanical connection L, when it comes to the closing stop 9, in order to deactivate the corresponding stop, and thus either open or close the movable contacts of the open For by means of opening or closing springs associated with the aforementioned crescents 15, 12.

As regards one locking lock device 9, the cell C also includes a spring, called a spring energy 23 and configured to interact with the locking lock device 9, so that when the locking device is unlocked, increase the closing speed of the contacts of the disconnector when the lock is unlocked .

This mechanical coupling L shown in FIG. 5-8, includes a sliding element support 24, inside which there is a sliding element 25 mounted for sliding, the bearing and the sliding element having a crescent moon 12 passing through them, which is fixed due to the fact that its free end portion 26 is splined into the support 24 of the sliding element, which includes a hole having an appropriate shape for the passage of this end part.

This sliding element 25 includes two stretched holes 27, 28 (Fig. 7, 8), separated from each other by a partition 29, and one hole 28 from the holes 27, 28 is designed to pass through it the end part 26 of the crescent 12 and is designed to accommodate a spring 30 located between a flat surface 31 belonging to this end part and an inner side 33 facing the said flat surface and belonging to the sliding element, while the side 32 of this end part 26 of the crescent, opposite to that which includes It includes a flat surface 31, pressed against the partition 29 of the sliding element 25.

The sliding member 25 responds back to the deployed position shown in FIG. 5 by means of a spring 30, the biasing of the sliding element 25 towards the retracted position shown in FIG. 6 is achieved by actuating the undercarriage 34 for the sliding member 25, forming a pin cooperating with the crank arm means R such as those described below.

In these FIGS. 5-8 also show a part mounted around the crescent shaft and made freely rotatable around the axis of the crescent, this part being the blade 35 of the short circuit coil 8.

This blade 35 includes a protruding portion 36 configured to interact with a protruding portion 37 belonging to the sliding element 25, the two parts extending substantially parallel to the crescent axis, so that when the sliding element is in the deployed position, the blade 35 configured to rotate the crescent moon 12 during the actuation of the coil 8, whereas if the sliding member 25 is retracted, the actuation of the coil has no effect on how much indeed created the element 25 and therefore on the crescent 12.

Around the shaft 2 for actuating the contacts of the vacuum circuit breaker circuit breaker, there is an installed rigid part attached to this shaft and called the position indicator 38. This indicator interacts with one 41 of the end parts 41, 42, called the first end part of the crank 39, called the indicator crank, mounted to rotate around the fixed axis of the switchgear support, as shown in FIG. 16a and 16b. Around the second axis of the support there is also a rotatably mounted second crank lever 40, called a crank lever of the sliding element and including a first part 43 designed to interact with the second end part 42 of the indicator crank lever 39, and a second part 44, designed to interact with the sliding element 25, as described below.

FIG. 16a and 16b show that the first lever 39 is arranged to actuate the second lever 40 in one direction or in the other direction by means of two pins 54, 55 located on the rear side of the first part 43 of the second lever 40 cooperating with the second part 42 of the first lever 39.

As previously mentioned, this electrical cell C also includes an earthing switch connected in series with the circuit breaker, the switch including a shaft 4 for controlling the earthing shaft 3, which is controlled by a lever through an opening made for this purpose, after actuation S selector. The actuation of this selector S causes the opening or closing of the hole for access to the grounding shaft 3 by means of a lever 51, called a second locking lever, including a closing flap 53.

The circuit breaker and the ground switch are mechanically connected by the interlocking device I, more specifically shown in FIG. 16 and made to prevent the actuation of the selector S to ground the electrical cell when the circuit breaker is in the closed position, and also made to prevent access to the shaft 1 of the control of the circuit breaker when the selector S is in the ground position, the opening for introducing the travel lever for the shaft 3, grounding is freed, and is made to prevent circuit breaker circuit during the intention of grounding, and the selector S is in the grounding position.

To this end, the locking device I includes a first locking lever 45 that is pivotally mounted around the drive shaft 2 for contacts of a circuit breaker, the lever 45 including a first arm 46 including a shutter 47 configured to close a control hole circuit breaker, and the first lever 45 is pivotally connected through the second arm 48 to one of the ends of the connecting rod 49, the other end of which is pivotally connected to one of the ends of the arm, called the first arm 50, belongs to zhaschim second locking lever 51 is pivotally mounted about a fixed axis of the cell and comprising a second arm 52, the free end of which includes a flap 53 for closing the access opening to the shaft 3 of the ground.

The pivoting axis between the connecting rod 49 and the second locking lever 51 passes through a pin 56 for inserting the selector S into the elongated hole 57, the selector S being slidably mounted relative to the fixed cell support between the position where grounding is allowed and the position in which grounding is prohibited, while said selector S is adapted to be actuated between these two positions by means of a travel component 58 located on first outer side.

The locking device I also includes a stopper 59, including a cam 60, configured to interact with the part forming the crank lever 61, attached to the first locking lever 45, and the stopper 59 is arranged to actuate the lever 45 in the closing position control holes for the drive shaft 1 to control the circuit breaker.

This part forming the crank lever 61 is also intended to cooperate with a pin 62 attached to the crank lever 40 of the sliding element, so as to bring the sliding element 25 into the position pulled into the support when the selector S is set to the ground position and to the closing position of the shaft access hole 1 control.

This interlocking device I also includes a pin 63 attached to the position indicator 38 and configured to interact with the first interlocking lever 45 so as to prevent the selector S from being directed towards the ground position when the circuit breaker is in the closed position.

The operation of the cell according to the invention will be described below with reference to the drawings.

In FIG. 9, the circuit breaker is in the open position, ready for closure, a certain amount of accumulated energy is stored in the closure spring around the axis of the crescent moon 12. In this position, the spring 30, located inside the sliding element 25, takes the sliding element back to the expanded position, in which the said sliding element 25 is located facing the actuator 18 of the closure button 6, so as to be able to interact with this actuator when the actuator is operational um.

Similarly in FIG. 10, the blade 35 of the coil 8 is located in the position shown in FIG. 5, in which she is ready to actuate the crescent moon 12 as soon as the coil is actuated. In these two figures, the hole for access to the shaft 1 of the circuit breaker control is released, while the hole for access to the shaft 3 of the ground is closed.

When either the closure button 6 or the closure coil 8 is actuated, the actuator 18, 20 of this element actuates the sliding element 25 either directly, in the case of a button, or by means of a blade 35, in the case of a coil, and therefore the crescent 12 closure, thereby unlocking the closure stop 9, and therefore the closure of the contacts of the vacuum circuit breaker, the position of which is shown in FIG. 11, 12 and 13.

When the cell C changes its position from the open position to the closed position, the rotation of the chopper travel shaft 2, which is in the counterclockwise position, activates the rotation of the position indicator 38, which, by moving it, actuates the first crank lever 39 clockwise and the second crank lever 40 counterclockwise, thereby obtaining the effect of actuating the sliding element 25 to its retracted position, which is shown in FIG. 11, 12, and 13.

In this position, a new action on the button 6 of the circuit or a new excitation of the coil 8 of the circuit does not have any effect on the sliding element 25, since the sliding element is retracted. On the other hand, the shift of the selector S towards the position that allows controlling the grounding shaft 3 is prevented by stopping the first locking lever 45 at the pin 63 located on the position indicator 38.

In this position, access to the driving shaft 1 for the control device is allowed in order to accumulate energy in the control device, while access to the grounding shaft 3 is prevented.

From the closed position, as shown in FIG. 11, 12 and 13, and after an unsupported opening command, the actuating element 17 of the opening button 5 or opening coil 7 activates the unlocking of the opening stop 10, then the action of the crank lever 15a of the crescent 15 of the opening, which as a result has the actuation of the crank the lever 40 of the sliding element counterclockwise, bringing the sliding element 25 into the retracted position, after which, if the opening command is not supported, the sliding element is withdrawn by the spring 30 to the expanded position, enable closure.

However, when the opening command is provided by the opening button 5, as shown in FIG. 14, or an opening coil 7, as shown in FIG. 15, the sliding member 25 is held by the crank lever 40 of the sliding member brought by the crank lever 15a of the opening crescent into the retracted position, preventing any closing action.

In FIG. 17, the circuit breaker is in a ready-to-close position, and a certain amount of energy has been accumulated to close the contacts of the circuit breaker using the closure spring 23. The selector S was biased towards the right side of cell C, indicating an attempt to ground the cell. This shift causes, on the one hand, a clockwise shift of the first locking lever 45, closing the opening for introducing the travel lever 1 to control the circuit breaker, and, on the other hand, causing the second locking lever 51 to shift counterclockwise, so that open the hole for access to the ground shaft 3. The first locking lever 45 controls the crank lever 40 of the sliding element so that communication between the sliding element 25 and the closure button 6 or the closure coil 8 becomes impossible.

In FIG. 18, the circuit breaker is in a ready-to-close position, and the closing energy has been accumulated in the closing spring. Grounding is actual, shaft 3 for controlling grounding is driven by rotation. The stop 53a is made on the closing flap 53 of the second locking lever 51 to hold the position of the ground shaft 3 and prevent it from turning in the opposite direction after grounding.

In FIG. 19, a stopper 59 is used to block access to the shaft 1 to control the control device. Thus, thanks to the key, the cam 60 of the stopper 59 is actuated 90 ° counterclockwise, thereby actuating the crank lever 61 of the first locking lever 45 clockwise, so that, on the one hand, to prevent access to the running hole for the control shaft 1, and, on the other hand, move the selector S to the position of the grounding intent and to hold this position of the locking levers 45, 51, as long as the key works in the opposite direction. It should be noted that the key to control the stopper 59 can be removed from the stopper only after a complete rotation of 90 °.

FIG. 20, 21 and 22 depict three possible embodiments of the opening buttons 5 and closing buttons 6 that can be used.

FIG. 20 depicts two rotary knobs 64, 65 for actuating, respectively, opening and closing. These two handles are controlled in two different directions of rotation, for example, counterclockwise for opening and clockwise for closing.

The movement with the rotation of each of the handles turns into a movement with the rotation of the actuators 66, 67.

In FIG. 21, only one 68 of the handles is used to open when this knob is actuated counterclockwise, and to close when this knob is actuated clockwise. In this case, the movement with the rotation of the handle is transformed into a movement with the rotation of two corresponding actuating elements 69, 70, which are configured to actuate the displacement of the crescent moon, in the case of one of them, or the sliding element, in the case of the other.

In FIG. 22, the two buttons are push-controlled buttons 71, 72, the control of one or the other button, resulting in the displacement of two different actuators 73, 74, respectively, which are displaced linearly in order to shift the crank of the crescent and the sliding element.

Accordingly, according to the invention, an interlocking device is obtained which is preferably used in an electric medium voltage cell including only a circuit breaker or switch, or in a cell including a circuit breaker or switch connected in series with an earthing switch.

In the first case, the device according to the invention is designed to prohibit the issuance of a closing command if the product is already closed, or if a supported opening command has already been issued either by the opening button or by the coil.

In the second case, the device according to the invention is designed to prohibit the issuance of a short circuit command, in addition to the above situations, for the case when the action selector is in the ground position, if the control device is grounded, or if access to the control shaft is blocked by a key.

This device is preferably placed on the front side, while it is made in order to allow changing the type of button for local manual control.

With this solution, the locking means that is required for the circuit breaker or switch to work properly, can be connected to the locking means that is required to combine the circuit breaker or switch with an earthing switch to create a single locking device with a particularly simple design.

This device provides switching to ground, even if energy is already stored in the control device for a short circuit; this eliminates the implementation of a short circuit followed by an open.

The key-operated locking system drives the first locking lever, which controls the crank lever of the sliding element and the sliding element. This key-controlled interlocking system inhibits closure, even if the closure energy is already stored in the circuit breaker.

The device according to the invention provides the use of different types of control buttons, including an actuating element made with the possibility of displacement, in order to actuate the crank of the crescent for the opening command, or a sliding element for closing.

Undoubtedly, the invention is not limited to the described and depicted embodiment of the invention, which was given only as an example.

However, the invention includes all technical equivalents of the described means, as well as combinations thereof, if the latter are made in accordance with the invention.

Claims (21)

1. A control device for a medium voltage electrical switchgear arranged between two parts of an electric circuit so as to provide current flow or to interrupt the current between these parts, the switchgear including an electrical switching unit configured to provide a closed position for leakage current or an open position for interrupting current, and the switching unit includes at least one actuating component an element for opening the contacts of the unit and at least one actuating component for closing the contacts, and the actuating components for opening and closing, respectively, are configured to transmit a control command to at least one opening component and at least , on one closing component, respectively, for contacts by mechanical connection, and the control device also includes means for breaking the mechanical connection so that any actuation of any closing actuation component is ineffective in cases where the closing command should not be executed in order to ensure the safety of people or the installation, and the above mentioned closing and opening components are mounted to rotate around two axes that are essentially parallel in axis relative to each other, moreover, the closing and / or opening of the contacts is achieved using the actuating component of the opening, which drives the rotation m opening component or, respectively, using an actuating component of the closure, actuating the rotation of the components of the circuit, and the closing components (12) and the opening components (15) are located essentially facing the actuating component (18, 20) of the closure and the actuating component (17, 19 ) opening, respectively, and the mechanical connection (L) includes a part (24) attached to the locking component (12), and the part (24) includes a sliding element (25), made with the ability to move between the first position in which the sliding element (25) is configured to interact with the actuating element (18, 20) of the closing component (12), so as to transmit a closing command to the closing component (12), and the second position in which the element ( 25) retracted and is no longer able to interact with the actuating element (18, 20) of the closing component (12), and the switchgear further includes a grounding device connected in series with the switching unit, characterized in that the displacement of the element from the deployed position to the retracted position is controlled by the closed state of the contacts, or by the held opening command for these contacts, or by actuating the locking means (59, 60, 61) to access the travel shaft (1) for contact management of the switching unit, while it further includes a locking device (I) controlled by a selector (S), configured to move between the first position at which the hole for access to the oval shaft (1) for controlling the switching unit is freed, while the hole for accessing the shaft (4) for controlling the grounding shaft (3) is closed, and the second position corresponding to the intention of grounding or actual grounding, in which the hole for accessing the shaft (4 ) for controlling the grounding shaft (3) is freed, while the hole for accessing the shaft (1) for controlling the control layout is closed, while the movement of the sliding element (25) between two positions is controlled by the crank lever (61) of the device (I) so as to prevent the switching unit from closing when the selector (S) is in the second position. 2. The control device according to claim 1, characterized in that the mechanical coupling (L) includes a part (24) forming a sliding element support attached to the closure component (12) and into which the sliding element (25) is inserted slidingly ) forming a retractable element. 3. The control device according to claim 2, characterized in that the sliding element (25) is controlled either by the contact position indicator (38) or by the part forming the crank arm (15a) attached to the opening component (15) via means (R ) crankshaft. 4. The control device according to claim 1 or 3, characterized in that the sliding element (25) is additionally controlled by either the crank lever (61) of the locking device (I) when the locking device is in the second position or by fixing means (59, 60, 61) for access to the running shaft (1) for controlling the switching unit controlling the crankshaft (61) of the locking means (I). 5. The control device according to any one of paragraphs. 1-3, characterized in that the locking device (I) includes a first locking lever (45) mounted with the ability to freely rotate around the control shaft (2) for the switching unit and includes a shutter (47) configured to close or open a hole for access to the running shaft (1) to control the switching unit, a second locking lever (51), mounted to rotate around the fixed axis of the support and including a sash (53), configured to release or close b hole for access to the ground shaft (3), and the locking levers (45, 51) are mechanically connected using the connecting rod (49), and the selector (S) with a pin passing through it (56) belonging to the first lever (45), moreover, the selector (S) is mounted with the ability to slide relative to the stationary support of the switchgear between two positions, the first locking lever (45) includes an articulated lever (61). 6. The control device according to claim 1, characterized in that the locking device (I) includes means (63, 38, 45) for closing the hole for access to the shaft (4) for controlling the ground shaft (3) when this block is in a closed position. 7. The control device according to paragraphs. 1, 3 or 6, characterized in that these means include a pin (63) attached to the part (38), which is mounted on the shaft (2) for controlling the contacts of the switching unit and forming a position indicator for the contacts, and the pin (63 ) interacts with the first locking lever (45). 8. The control device according to claim 3, characterized in that these means (R) of the crank lever include a first crank lever (39), called an indicator crank lever, mounted for rotation with respect to an axis belonging to the fixed support of the switchgear and including the first part (41) interacting with the part (38) attached to the control shaft for the contacts of the switching unit, and a forming indicator, and a second crank lever (40), called the crank lever of the sliding element and mounted with the possibility of rotation around the second fixed axis of the support of the switchgear, the second cranked lever includes a first part (43) designed to interact with the second part (42) of the first cranked lever (39) by means of two pins (54, 55) located on a second crank arm (40), and a second part (44) intended to interact with the crank arm (15a) of the trip component (15). 9. The control device according to any one of paragraphs. 1-3, characterized in that these locking means (59, 60, 61) include a latch (59) that can be controlled by a key, configured to rotate the cam (60), the cam (60) being made with the ability to interact with the crank lever (61) of the locking device (I), so as to bring this device into position to close or release the hole for access to the control shaft to control the switching unit. 10. The control device according to claim 1, characterized in that one or each of the opening component (15) or the component (12) of the circuit is attached to the auxiliary shaft (13) of the circuit or, respectively, to the circuit of the circuit, moreover, the auxiliary shafts are mechanically connected to the shaft (2 ) to control the switching unit, each of the opening (15) and closing (12) components being held in the position corresponding to the closed or correspondingly open position of the contacts of the switching unit using the locking stop device (10) or correspondingly actual locking circuit device (9), and these locking devices are made with the possibility of unlocking by actuating the corresponding component. 11. A control device according to claim 2 or 3, characterized in that the sliding element (25) includes two holes (27, 28) separated by a partition (29), one (28) of the holes being intended to receive the end part (26 ) component of the circuit (12), and the part is supported by a partition (29), and a spring (30), resting at one end on a flat surface (31) belonging to the end part (26), and its opposite end on the inside (33) a sliding member (25), wherein the sliding member also includes a pin (34) attached to the sliding element (25) and designed to interact with the crank lever (40) of the sliding element (25) so as to ensure the translation of the sliding element from one position to another. 12. The control device according to claim 2, characterized in that this device includes at least one manually operated opening button (5) and at least one manually operated closing button (6), wherein the actuating element ( 17, 18) of each button is made when it is actuated with the ability to interact with the sliding element (25), so as to actuate it by rotation. 13. The control device according to claim 12, characterized in that one or each manually controlled opening button or one or each manually controlled closing button is located (located) on the front side of the switchgear so as to be controlled by the user from this side. 14. The control device according to claim 12 or 13, characterized in that one or each manually controlled opening component (5) or closing component (6) is a push-controlled button (71, 72) including an actuating element (73, 74), configured to move in order to rotationally disengage the opening component (15) or sliding element (25), according to whether the button (71, 72) is used for opening or for closing. 15. The control device according to claim 12 or 13, characterized in that one or each manually controlled opening component or component of the closure is a rotary knob (64, 65) including an actuating element (66, 67) configured to move with rotation to bias the opening component (15) or sliding element (25), according to whether the handle is used to open or close. 16. The control device according to p. 12 or 13, characterized in that it includes a single rotary knob (68), configured to move with rotation in one direction or in the other direction in order to open or close, and the handle includes two actuating elements (69, 70) configured to move with rotation in two opposite directions of rotation and configured to interact with the opening component (15) or sliding element (25), respectively veno. 17. The control device according to claim 2, characterized in that the device includes at least one remote excitation coil (8), the actuating element (19, 20) of the coil (7, 8) interacting with the sliding element (25 ) by means of a support (24) including a blade (35), mounted to rotate freely around the closure component (12), the support (24) including a part (36) interacting with a part (37) of the sliding element (25) ), so that the excitation of the coil (8) by means of the blade (35) rotates about yell (24) and the sliding member (25) and thereby drives the rotation component (12) circuit. 18. The control device according to any one of claims 1 to 3, characterized in that the switching unit is a vacuum circuit breaker or a vacuum circuit breaker, and the grounding device is a ground disconnector. 19. A medium voltage distribution electrical protection device including an opening component (15) and a closing component (12), which are configured to control opening and closing of the contacts, characterized in that it includes a control device according to any one of claims. 1-18. 20. An electrical medium-voltage cell including at least one switchgear according to claim 19.

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