Electric commutation device having additional electric function

FIELD: electricity.

SUBSTANCE: electric commutation device is intended for attachment to a fixation support and contains at least one electric commutation module (2, 3) and at least one module (1) having an additional electric function, in particular - that of differential protection. At least one of the additional modules (1) is located close to at least one commutation module (2, 3). One or every commutation module (2, 3) contains an arc-extinguishing chamber (7, 8). The arc-extinguishing chamber (7, 8) of the module (2, 3) located opposite the additional module (1) has a surface (11, 12) curved relative to the arc-extinguishing chamber inner part to create a space (E, F) inside the chamber that ensures the possibility of accommodating part of the additional module volume therein (1). The ends (13, 14, 15 and 16) of the arc-extinguishing chamber (7, 8) encompass the additional module (1) volume.

EFFECT: improvement of the device operating characteristics without increase of it overall width.

10 cl, 3 dwg

 

The technical field

The present invention relates to an electrical switching device intended for mounting on the securing of the support and containing at least one switching module and at least one module having an additional electrical function, with at least one of the modules having additional electrical function located near at least one of the switching modules, one or each switching module contains the arc chute.

Prior art

In document EP 0948021 disclosed multi-pole differential circuit breaker, located in a separate case, the module differential protection, surrounded on each side by two electric switching modules, each having a pole node of the circuit breaker, the Assembly has dimensions that correspond to the four main modules. In this document the Department of the switch are of the same width along their entire height. The same width of the branches of the switch prevents the possibility of increasing the size of the toroid. This leads to the fact that there is not possibility of improving the operating characteristics of the device without increasing the width of the device.

Summary of the invention

The present invented the e is directed at overcoming these problems by creating an electric switching device, containing a certain number of switching modules and at least one module that performs additional electric function, with either increased rated current, or extended performance additional functions, while at the same time, saved the switching performance of the device, and not increased the overall width of the device.

The purpose of this invention is to provide an electric switching device of the aforementioned type, characterized in that arc chamber module, located opposite the extension has a curved surface relative to the inner part of the arc chamber in order to create space within the interrupter chamber, allowing the placement of a portion of the volume of the unit having the additional function, and the fact that the ends of the interrupter chamber capture the amount of additional module.

In accordance with another characteristic of the one or each of the arc chambers contains a stack of plates held essentially parallel relative to each other, with the edges of the plates interrupter chamber located opposite the additional module are located in a plane angled relative to the inner part of the corresponding interrupter chamber.

In the accordance with another characteristic of the switching(s) module(s) respectively accommodates(s) pin(s) node(s) circuit breaker, and the module has an additional feature is a module differential protection.

According to a particular variant embodiment of the module of differential protection contains the toroid, the toroid partially placed in a neighboring () switch () of the module(s).

In accordance with another specific characteristic, the device comprises a differential module, surrounded on each side switching module that can accommodate a pole node of the circuit breaker, while the two surfaces arc chambers of the two switching modules located on each side of the differential module, have a shape that is curved relative to the inner part of the arc chamber.

In accordance with another characteristic of the one or each switching module includes an electromagnetic coil, the device characterized by the fact that one or each switching module includes at least one wall with an offset to form two sections of different width, the width represents the size of the device, measured parallel to the direction of alignment of the modules that are part of the module, having a smaller width, contains arc chute, and a portion of a module with a larger width that accommodates the coil, and the coil has a larger diameter which, than the width of the corresponding interrupter chamber.

In accordance with another characteristic module differential protection contains toroid located between the two opposite each other interrupter chambers, and the axis of the toroid is parallel to the axis of the coil(EC).

Brief description of drawings

The invention is further explained in the description of the preferred variant of embodiment, with reference to the accompanying drawings, in which:

figure 1 is a partial view in section of a bipolar differential circuit breaker, in accordance with the invention, at a plane parallel to the base of the device;

figure 2 - General view illustrating a set of plates constituting the arc chute in accordance with the invention;

figure 3 - schematic representation of the top view of a multipolar differential circuit breaker in accordance with a particular variant embodiment of the invention.

Description of the preferred embodiment variants of the invention

Figure 1 shows the inner part of the bipolar differential switch D circuit with differential module 1, surrounded by two switching modules 2, 3. Essentially, the known differential module 1 contains the toroid 4, through which the main conductors 5, and the comma is yousie modules 2, 3, each of which contains the arc chute 7, 8, each arc chamber 7, 8 contains a set superimposed on each of the plates 9, 10, passing in a direction essentially parallel to each other and the base of the device.

In accordance with the invention, the surfaces 11, 12 arc chambers 7, 8 located in front of the donut are curved relative to the inner part of the arc chambers. For this purpose the plate width was reduced in the center of the arc chambers 7, 8 and increases as decreases the distance to the ends 13, 14, 15, 16 cameras. The edge 10A of the plate located in front of the additional module, thus, are in a plane angled relative to the inner part of the corresponding interrupter chamber. This provided the ability to create space E, F inside the arc chambers 7, 8 for the placement of a portion of a toroid 4, and the sizes of the latter can be increased. Reducing the width of the plates in the Central part of the arc chambers 7, 8 is compensated by the increased width of the plates at the ends 13-16 chambers 7, 8, thus not altering the operating characteristics of electric tripping.

Thus, according to the invention proposed arc chamber, providing an opportunity for the toroid to take volume commuters the pole of nodes without compromising breaking capacity, on the one hand, through the creation of additional space for placement of a toroid, which sizes were increased, and, on the other hand, by increasing the width of the arc chamber at the ends of the camera. The toroid is surrounded by the material of the camera, and the amount of material being supported to keep breaking ability, and this can be achieved without increasing the width of the device.

Figure 3-pole differential circuit breaker, in accordance with the invention, contains module 1 differential protection, surrounded on each side by two switching modules 2, 3, 17, 18. Each switching module 2, 3, 17, 18 contains the arc chute 7, 8, 19, 20, hosts the plates 9, 10 are parallel to each other, and the electromagnetic coil 22, 23, 21, 24. Each part 2A, 3A, 17A, 18a of the switching module 2, 3, 17, 18, enclosing the coil 21-24 shifted relative to the corresponding interrupter chamber 7, 8, 19, 20 so that each switching module 2, 3, 17, 18 propagate the switching module or an optional module to a length essentially corresponding to the length of the electromagnetic coil. For this purpose, the separating walls 26, 27, 25, 28 switching modules 2, 3, 17, 18 are offset 26a, 25A, 28a, 27A in the direction of additional module 1, at the level of separation between on gogavale the camera and the coil body, to form two sections of modules with different widths L1, L2, while the width is measured parallel to the direction of alignment D modules. In the part module, having a smaller width L1, posted by arc chamber, and part of the module with a larger width L2, posted by the coil, and the coil has a larger diameter than the width of the corresponding interrupter chamber. This design provides the possibility of increasing the cross-section of the wires of the coil, which will reduce overheating by 20%.

This means that for a given performance can be used wire of suitable cross-section, the width of the device is not increased. Through this improve the performance of magnetic protective devices, while retaining the original dimensions of the node.

This arrangement is particularly preferred when the toroid is located so that its axis parallel to the axis of the coils. This particular layout of a toroid, in fact, provides the possibility of displacement of the partitions in such a way as to increase the space in which coils are placed.

Preferably, the invention is applied to a differential circuit breakers and, mainly, to the monoblock modular electrical switching devices containing main or updat the enforcement function, for example, in-line remote control, exhaust recirculation system, etc.

Of course, the invention is not limited to the described and illustrated variant embodiment which have been given for illustrative purposes only.

On the contrary, the invention extends to embracing all the technical equivalents of the described means as well as his combinations if the latter are achieved in accordance with the invention.

1. Electric switching device, configured to secure the locking of the support, containing at least one switching module and at least one module having an additional electrical feature called add-on module, and at least one of the additional modules is located near at least one of the switching modules, one or each switching module contains arc chute, wherein the arc chamber (7, 8), at least one switching module (2, 3), opposite at least one additional module (1)has a curved surface (11, 12) relative to the inner part of the arc chamber (7, 8) in order to create the space (E, F) inside the arc chamber that enables the placement of a portion of the volume of the additional module (1), moreover, the ends (13, 14, 15 and 16) interrupter chamber (7, 8) capture the amount of additional module (1).

2. Electric switching device according to claim 1, in which one or each of the arc-quenching chambers (7, 8) contains a stack of plates (9, 10), passing in a direction essentially parallel to each other, characterized in that the edge (10A) of the plates (9, 10) interrupter chamber (7, 8)located opposite the additional module (1), are located in a plane angled relative to the inner part of the corresponding interrupter chamber (7, 8).

3. Electric switching device according to claim 1 or 2, characterized in that the switching module(s) (2, 3) respectively placed pin the nodes of the circuit breaker, with additional module (1) is a module differential protection.

4. Electric (1) differential switching device according to claim 3, characterized in that the module (1) differential protection contains toroid (4), and the toroid (4) partially placed in a neighboring switching module(s) (2, 3).

5. Electric switching device according to any one of claims 1 or 2, characterized in that it contains a differential module (1), surrounded on each side switching module (2, 3), hosts pole node of the circuit breaker, with two surfaces (11, 12) two interrupter Cam is p (7, 8)located on each side of the differential module (1)has a shape which is curved relative to the inner part of the arc-suppressing chamber (7, 8).

6. Electric (1) differential switching device according to claim 5, characterized in that the module (1) differential protection contains toroid (4), and the toroid (4) partially placed in a neighboring switching module(s) (2, 3).

7. Electric switching device according to any one of claims 1 or 2, in which one or each switching module (2, 3, 17, 18) includes an electromagnetic coil (21-24), characterized in that one or each switching module includes at least one wall (26-28), with an offset (26a, 25A, 28a, 27A)in order to form two sections of modules with different widths L1, L2, and the width represents the size of the device, measured parallel to the direction D of the alignment of the modules in the part module having smaller width L1, posted by arc chamber(7, 8, 19, 20), as part of the module with a larger width L2, posted by the coil, and the coil has a larger diameter than the width of the corresponding interrupter chamber.

8. Electric switching device according to claim 7, characterized in that the switching module(s) (2, 3) respectively placed pin the nodes of the circuit breaker, while additionally the first module (1) is a module differential protection.

9. Electric (1) differential switching device according to claim 7, characterized in that the module (1) differential protection contains toroid (4), and the toroid (4) partially placed in a neighboring switching module(s) (2, 3).

10. Electric switching device according to claim 7, characterized in that the module (1) differential protection contains toroid (4)located between the two opposite arc-quenching chambers(7, 8, 19, 20), and the axis of the toroid (4) runs parallel to the direction of the axis of the coil(EC) (22-24).



 

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