CLIAMS:1. A device (1) for actuating opening/closing operation based on at least one command for at least one circuit breaker (101), CHARACTERIZED IN THAT it comprises:
at least one electromagnet (2) configured to drive the circuit breaker (101) and comprises at least one moving core (3) and at least two identical fixed cores (4);
at least one plastic bobbin (5) wounded by at least one copper wire; wherein
the moving core (3) is connected to a mechanism (7) of the circuit breaker (101) using at least one core pin (6);
a connector pin assembly (20) is fixed to the circuit breaker (101) and thereby connected with the device (1); and
the moving core (3) is configured to slid inside a plastic bobbin (5) thereby achieving opening/closing operation of the circuit breaker (101).

2. The device (1) as claimed in claim 1, wherein the mechanism (7) comprises:
a knob assembly (8) comprising at least one knob (12), at least one holder (13) and at least one knob bar (14); and
a latch assembly (9) comprising at least one primary latch (16) and at least one secondary latch (17) rotating about a particular axis and are held away from each other using an opposing spring; wherein
the secondary latch (17) is configured to rest over the knob assembly (8) with using an extension spring connected between the primary latch (16) and a housing (18).

3. The device (1) as claimed in claim 1 comprises a rectangular shaft (19) passing through the knob assembly and connected to the circuit breaker (101).

4. The device (1) as claimed in claim 1, wherein the linear motion of the moving core (3) is used to close and open the circuit breaker (101) by the mechanism (7) that converts the linear motion into rotary motion.

5. The device (1) as claimed in claim 1, wherein the moving core is connected to a link (10) configured to rotate about a particular axis by means of a pin (11), wherein the link (10) is connected to the knob (12) by means of a U-pin (15).

6. The device (1) as claimed in claim 1 comprises a restoring spring connected to the link (10), causing the moving core (3) to be always projecting out of the plastic bobbin (5).

7. The device (1) as claimed in any of the preceding claims, wherein on the receipt of “ON” command:
the moving core (3) of the electromagnet (2) is configured to be pushed inside the plastic bobbin (5) against the restoring spring connected to link (10);
the link (10) rotating about the axis makes the knob assembly (8) is configured to rotate to 90°, thereby making the circuit breaker (101) to close;
the knob bar (14) is rotated to 90° is configured to press the primary latch(16) towards the secondary latch(17) against the opposing spring and extension spring;
the knob(12) along with the link (10) and moving core (3) is configured to take its original position by the restoring spring, leaving behind the holder (13) and the knob bar (14) in the rotated position; thereby
the loaded opposing spring between primary latch (16) and secondary latch (17) causes the secondary latch (17) to fall below the link (10).

8. The device (1) as claimed in any of the preceding claims, wherein on the receipt of “OFF” command:
the moving core (3) of the electromagnet (2) is configured to be pulled of the plastic bobbin (5);
the link (10) and knob (12) are configured to be rotated;
the secondary latch (17) which is below the link (10) is configured to be pressed, causing the secondary latch (17) to press an arm (22) of primary latch (16);
the arm (22), in response to the pressing, is configured to rotates a free latch (21) and the connector pin assembly (20) connected to the free latch (21), and thereby making the circuit breaker (101) to trip; wherein
in response to tripping, the knob assembly (8), the latch assembly (9), the link (10) and the moving core (3) are configured to retain their original position.

9. The device (1) as claimed in any of the preceding claims is configured to operate in the circuit breaker with at least four modules in size.

10. The device (1) as claimed in any of the preceding claims is of size equal to one module of the circuit breaker; specifically the size is 17.5 mm.

11. The device (1) as claimed in any of the preceding claims is configured to be connected in at least one position of the circuit breaker selected from top, left, bottom or right.

12. A device (1), for actuating opening/closing operation based on at least one command for at least one circuit breaker (101), comprising at least one electromagnet (2), at least one moving core (3), at least two identical fixed cores (4), at least one plastic bobbin (5), at least one core pin (6), a mechanism (7), a knob assembly (8), a latch assembly (9) with a link (10), at least one pin (11), at least one knob (12), at least one holder (13), at least one knob bar (14), at least one U-pin (15), at least one primary latch (16), at least one secondary latch (17), a housing (18), a shaft (19), a connector pin assembly (20), a free latch (21), and an arm (22),
CHARACTERIZED IN THAT it comprises:
said electromagnet (2) configured to drive the circuit breaker (101) and comprises said moving core (3) and said identical fixed cores (4);
said plastic bobbin (5) wounded by said copper wire; wherein
said moving core (3) is connected to said mechanism (7) of said circuit breaker (101) using said core pin (6);
said connector pin assembly (20) is fixed to said circuit breaker (101) and thereby connected with said device (1);
said moving core (3) is configured to slid inside said plastic bobbin (5) thereby achieving opening/closing operation of said circuit breaker (101); and
said mechanism (7) comprises said knob assembly (8) comprising said knob (12), said holder (13) and said knob bar (14); and
said latch assembly (9) comprising said primary latch (16) and said secondary latch (17) rotating about a particular axis and are held away from each other using said opposing spring; wherein
said secondary latch (17) is configured to rest over said knob assembly (8) with using said extension spring connected between said primary latch (16) and said housing (18).
,TagSPECI:TECHNICAL FIELD

[001] The present subject matter described herein, in general, relates to protection and control of equipment of electrical power systems, and more particularly to device for actuating opening/closing operation for a circuit breaker, in order to disconnect/connect components of a power system (generators, lines, transformers, user loads, and the like.).

BACKGROUND

[002] As is known, circuit breakers are normally used in all those situations where it is required to interrupt in very short periods of time high short-circuit currents, such as those which may occur, for example, downstream of an electric power station, prior to a transmission line.

[003] Miniature Circuit Breakers (MCB) generally gives protection against overload and short circuit. When there is an abnormality such as overload or short circuit, the miniature circuit breaker automatically opens the circuit. Accessories like shunt release helps in opening the contact system of the miniature circuit breaker by the user command, thereby disconnecting the supply to the load. Similarly there are many such accessories available to open the MCB during abnormal conditions or as and when desired by the user.

[004] The current available solutions to open and close the MCB are not compact and can be connected only to a particular side of MCB. Further, the accessory such as shunt release will help the user to open a MCB from a remote location.

SUMMARY OF THE INVENTION

[005] The following presents a simplified summary of the invention in order to provide a basic understanding of some aspects of the invention. This summary is not an extensive overview of the present invention. It is not intended to identify the key/critical elements of the invention or to delineate the scope of the invention. Its sole purpose is to present some concept of the invention in a simplified form as a prelude to a more detailed description of the invention presented later.

[006] An object of the present invention is to overcome the above drawback by providing a complete package of opening and closing a MCB (up to 4 modules in size) from a remote location based on user commands.

[007] Another object of the present invention is to provide a solution such that, this accessory can be connected to either sides of MCB and comes in a compact single module size.

[008] Yet another object of the present invention to provide a solution that lies in the compact size of the accessory, where the size of the accessory is of 1 module (17.5 mm).

[009] Yet another object of the present invention is to provide a solution that can close and open the MCB as and when desired by the user based on the respective command.

[0010] Yet another object of the present invention is to pave way for connecting the accessory either to left or right of the miniature circuit breaker.

[0011] Yet another object of the present invention provides an arrangement of components in a housing base and covering the components using a cover.

[0012] Yet another object of the present invention to provide a mechanism that opens the MCB with the help of its trip latch

[0013] Accordingly, in one implementation, a device for actuating opening/closing operation based on at least one command for at least one circuit breaker is disclosed. The device comprises at least one electromagnet configured to drive the circuit breaker and comprises at least one moving core and at least two identical fixed cores; at least one plastic bobbin wounded by at least one copper wire; wherein the moving core is connected to a mechanism of the circuit breaker using at least one core pin; a connector pin assembly is fixed to the circuit breaker and thereby connected with the device; and the moving core is configured to slid inside a plastic bobbin thereby achieving opening/closing operation of the circuit breaker.

[0014] Other aspects, advantages, and salient features of the invention will become apparent to those skilled in the art from the following detailed description, which, taken in conjunction with the annexed drawings, discloses exemplary embodiments of the invention.

BRIEF DESCRIPTION OF THE ACCOMPANYING DRAWINGS

The above and other aspects, features, and advantages of certain exemplary embodiments of the present invention will be more apparent from the following description taken in conjunction with the accompanying drawings in which:

[0015] Figure 1 illustrates an accessory (1) arrangement in OFF condition, in accordance with an embodiment of the present subject matter.

[0016] Figure 2 illustrates the accessory (1) during ‘ON” state, in accordance with an embodiment of the present subject matter.

[0017] Figure 3 illustrates the end of ‘ON’ operation, in accordance with an embodiment of the present subject matter.

[0018] Figure 4 illustrates the accessory (1) during ‘OFF state, in accordance with an embodiment of the present subject matter.

[0019] Figure 5 illustrates the latch assembly (9), in accordance with an embodiment of the present subject matter.

[0020] Figure 6 illustrates the knob assembly (8), in accordance with an embodiment of the present subject matter.

[0021] Figure 7 illustrates the isometric view of connecting accessory (1) with MCB (101) through rectangular shaft (19) and connector pin assembly (20), in accordance with an embodiment of the present subject matter.

[0022] Persons skilled in the art will appreciate that elements in the figures are illustrated for simplicity and clarity and may have not been drawn to scale. For example, the dimensions of some of the elements in the figure may be exaggerated relative to other elements to help to improve understanding of various exemplary embodiments of the present disclosure. Throughout the drawings, it should be noted that like reference numbers are used to depict the same or similar elements, features, and structures.

DETAILED DESCRIPTION OF THE PRESENT INVENTION

[0023] The following description with reference to the accompanying drawings is provided to assist in a comprehensive understanding of exemplary embodiments of the invention. It includes various specific details to assist in that understanding but these are to be regarded as merely exemplary.

[0024] Accordingly, those of ordinary skill in the art will recognize that various changes and modifications of the embodiments described herein can be made without departing from the scope of the invention. In addition, descriptions of well-known functions and constructions are omitted for clarity and conciseness.

[0025] The terms and words used in the following description and claims are not limited to the bibliographical meanings, but, are merely used by the inventor to enable a clear and consistent understanding of the invention. Accordingly, it should be apparent to those skilled in the art that the following description of exemplary embodiments of the present invention are provided for illustration purpose only and not for the purpose of limiting the invention as defined by the appended claims and their equivalents.

[0026] It is to be understood that the singular forms “a,” “an,” and “the” include plural referents unless the context clearly dictates otherwise.

[0027] By the term “substantially” it is meant that the recited characteristic, parameter, or value need not be achieved exactly, but that deviations or variations, including for example, tolerances, measurement error, measurement accuracy limitations and other factors known to those of skill in the art, may occur in amounts that do not preclude the effect the characteristic was intended to provide.

[0028] Features that are described and/or illustrated with respect to one embodiment may be used in the same way or in a similar way in one or more other embodiments and/or in combination with or instead of the features of the other embodiments.

[0029] It should be emphasized that the term “comprises/comprising” when used in this specification is taken to specify the presence of stated features, integers, steps or components but does not preclude the presence or addition of one or more other features, integers, steps, components or groups thereof.

[0030] The list of components along with their respective reference numerals for the understanding of the present invention is as provided below:
1. Accessory
2. Electromagnet
3. Moving core
4. Two identical fixed cores
5. Plastic bobbin
6. Core pin
7. Mechanism
8. Knob assembly
9. Latch assembly
10. Link
11. Pin
12. Knob
13. Holder
14. Knob bar
15. U-pin
16. Primary latch
17. Secondary latch
18. Housing
19. Shaft
20. Connector pin assembly
21. Free latch
22. Arm

[0031] In one implementation, the present invention provides an accessory (1) for remote closing and opening of a miniature circuit breaker (101) has an electromagnet (2) that is the main source for driving the MCB (101).The electromagnet (2) has a moving core (3) and two identical fixed cores (4).The moving core (3) will be sliding inside a plastic bobbin (5) wounded by copper wire. The moving core is connected to the mechanism (7) with the help of a core pin (6).

[0032] The mechanism consists of knob assembly (8) and latch assembly (9). The linear motion of the moving core (3) is used to close and open the MCB (101) by the mechanism that converts the linear motion into rotary motion. The moving core is connected to a link (10) that will rotate about an axis A via a pin (11).The knob assembly (8) consists of knob (12), a holder (13) and a knob bar (14).The link (10) is connected to the knob (12) via a U-pin (15). A restoring spring (not shown) is connected to the link (10) that causes the moving core (3) to be always projecting out of the plastic bobbin (5) in normal condition. The primary latch (16) and secondary latch (17) rotating about an axis B are always held away from each other with the help of an opposing spring (not shown). The secondary latch (17) is made to rest over the knob assembly (8) with the help of an extension spring (not shown) connected between the primary latch (16) and housing (18).A rectangular shaft (19) passes through the knob assembly and is connected the MCB (101). Also a connector pin assembly (20) is fixed to MCB (101) and then connected with the accessory (1).

OFF-ON:
The accessory (1) that is connected to the MCB (101) will be in ‘OFF” state initially. As soon as an ‘ON’ command is received, the electromagnet (2) will be energized and the moving core (3) will be pulled inside the plastic bobbin (5) against the restoring spring (not shown) connected to link (10). The link (10) rotating about axis A makes the knob assembly (8) to rotate 90°, thereby making the MCB (101) to close. The connector pin assembly(20) along with free latch (21) will be rotated by the mechanism of MCB (not discussed here).The knob bar (14) rotated 90° will press the primary latch(16) towards the secondary latch(17) against the opposing spring(not shown) and extension spring (not shown).The knob(12) in the knob assembly(8) along with link(10) and moving core(3) will be going to its original position by the restoring spring (not shown), leaving behind the holder (13) and knob bar (14) in the rotated position. Therefore, as soon as the link is moved to its original position, the loaded opposing spring between primary latch (16) and secondary latch (17) causes the secondary latch (17) to fall below the link (10).

ON-OFF:
After receiving the ‘OFF’ command, the electromagnet (2) will be energized and pulls the moving core (3) into the plastic bobbin (5). The link (10) and knob (12) will rotate .The secondary latch (17) which was below the link (10) at the end of ‘ON’ operation, will now be pressed. The secondary latch (17) in turn presses the arm (22) of primary latch (16). The arm (22) of primary latch (16) in turn rotates the free latch (21) .The connector pin assembly (20) connected with free latch (21) also rotates, making the MCB (101) to trip. Once the MCB (101) trips, the knob assembly (8), latch assembly (9), link (10) and moving core (3) will fall back to their original position.

[0033] In one implementation, the invention thus provides a solution to open and close a MCB (101) remotely that comes in 1 module (17.5mm) with and can be connected to either side of the MCB (101).

[0034] In one implementation, the invention gives a complete package of opening and closing a MCB up to 4 modules in size from a remote location based on the user commands. The invention also provides a solution such that, this accessory can be connected to either sides of MCB and comes in a compact single module size.

[0035] In one implementation, a device (1) for actuating opening/closing operation based on at least one command for at least one circuit breaker (101). The device comprises at least one electromagnet (2) configured to drive the circuit breaker (101) and comprises at least one moving core (3) and at least two identical fixed cores (4); at least one plastic bobbin (5) wounded by at least one copper wire; wherein the moving core (3) is connected to a mechanism (7) of the circuit breaker (101) using at least one core pin (6); a connector pin assembly (20) is fixed to the circuit breaker (101) and thereby connected with the device (1); and the moving core (3) is configured to slid inside a plastic bobbin (5) thereby achieving opening/closing operation of the circuit breaker (101).

[0036] In one implementation, the device is configured to be connected in at least one position of the circuit breaker selected from top, left, bottom or right.

[0037] Figure 1 illustrates an accessory (1) arrangement in OFF condition, in accordance with an embodiment of the present subject matter. The figure 1 has a mechanism (7), knob assembly (8), latch assembly (9), electromagnet (2), arranged in a housing (18).

[0038] Figure 2 illustrates the accessory (1) during ‘ON” state, in accordance with an embodiment of the present subject matter. The figure 2 shows a moving core (3) is in attracted condition. The knob assembly (8) has rotated 90°. The position of latch assembly (9) is also shown.

[0039] Figure 3 illustrates the end of ‘ON’ operation, in accordance with an embodiment of the present subject matter. The figure 3 shows the moving core (3), link (10) and knob (12) returned to the original position, whereas the knob bar (14) and holder (13) remains in the rotated state. The secondary latch (17) falls below the link (10) and the position of free latch (9) is shown.

[0040] Figure 4 illustrates the accessory (1) during ‘OFF state, in accordance with an embodiment of the present subject matter. The figure 4 shows the moving core (3) is in attracted condition. The knob (12) has rotated 90°. The link (10) presses the secondary latch (17). The secondary latch (17) presses the arm (22), which in turn presses the free latch (21) and makes the MCB (101) to trip.

[0041] Figure 5 illustrates the latch assembly (9), in accordance with an embodiment of the present subject matter.

[0042] Figure 6 illustrates the knob assembly (8), in accordance with an embodiment of the present subject matter.

[0043] Figure 7 illustrates the isometric view of connecting accessory (1) with MCB (101) through rectangular shaft (19) and connector pin assembly (20), in accordance with an embodiment of the present subject matter.

[0044] Some of the important features of the present invention, considered to be noteworthy are mentioned below:
1. The present invention provides the optimized space allocation which comes in a single module size (1 module = 17.5 mm).
2. The present invention provides arrangement of components in a housing base and covering the components using a cover.
3. The present invention is capable of opening and closing a MCB up to 4 modules in size, based on the user command.
4. The present invention may be connected to either sides of the MCB.
5. The present invention opens the MCB with the help of its trip latch.

[0045] It may be understood by the person skilled in that art that, the coupling, joining, fitting of the two components mentioned the present invention may be achieved by any of the existing coupling techniques that may include but not limited to nut and bolt arrangement, gluing, pasting, welding, and the like.

[0046] Although a device for actuating opening/closing operation of a circuit breaker have been described in language specific to structural features and/or methods, it is to be understood that the embodiments disclosed in the above section are not necessarily limited to the specific features or methods or devices described. Rather, the specific features are disclosed as examples of implementations of the device for actuating opening/closing operation of a circuit breaker.