CN117133604A

CN117133604A - Disconnecting switch assembly of switch equipment

Info

Publication number: CN117133604A
Application number: CN202310598345.0A
Authority: CN
Inventors: 高拉夫·海冈卡尔; 加内施·巴克里希纳·盖特; 丁卡尔·詹赫尔; 史瑞坎斯·皮; 纳米特·库马·谢拉
Original assignee: ABB Schweiz AG
Current assignee: ABB Schweiz AG
Priority date: 2022-05-26
Filing date: 2023-05-25
Publication date: 2023-11-28
Also published as: EP4283651A1

Abstract

The invention discloses an isolating switch assembly of a switch device. The disconnector includes a first link pivotably coupled to a body of a circuit breaker of the switchgear. The first link includes a first end rotatably coupled to the shaft of the circuit breaker and a second end movably disposed in a slot defined in the body. Further, the disconnector assembly includes a cam movably connected to the second end of the first link and configured to be displaced relative to the displacement of the second end, and an actuation pin arranged on the platform and configured to be linearly displaced relative to the displacement of the cam. Additionally, the isolation switch assembly includes a second link pivotably coupled to the actuation pin and configured to pivot relative to linear displacement of the actuation pin between a first operational position and a second operational position for selective operation of the isolation switch assembly.

Description

Disconnecting switch assembly of switch equipment

Technical Field

The present invention relates generally to switching devices in electrical power systems. More particularly, the present invention relates to an isolating switch assembly for a switching device. Further, embodiments of the present invention disclose selective operation of a disconnector assembly based on an operating position of a circuit breaker of a switchgear.

Background

Electrical switching apparatus are used in power distribution systems to distribute power and selectively isolate electrical loads. In general, switching devices are produced in various forms. Typically, switchgear includes a combination of electrical components such as a main distribution bus or bar, a disconnector assembly, fuses, and circuit breakers. The switchgear is located where distribution, isolation and/or protection is required. These locations may include, for example, generators, factories, motors, transformers, and substations.

Typically, in an electrical switching apparatus, the physical opening of a circuit breaker is accomplished by a disconnector assembly. Since the disconnector assembly is unable to disconnect the rated load or line current, the disconnector assembly is an unloading isolator and only needs to be operated when the circuit breaker is in the off position. In some cases, if the disconnector assembly is operated, i.e. switched from its on position to off when the circuit breaker is in the on position, it may cause interruption of the load current and may cause a flashing of the medium between subsequent phases or between the phases and the ground terminal. Furthermore, internal flashover faults may also result which may destroy the entire switchgear, the connected lines and the load devices, which is undesirable.

The present invention is directed to overcoming one or more of the limitations set forth above.

The information disclosed in the background of the disclosure section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art that is known to a person skilled in the art.

Disclosure of Invention

One or more of the shortcomings of conventional systems are overcome and additional advantages are provided through the components and systems claimed in the present disclosure. Additional features and advantages are realized through the techniques of the present disclosure. Other embodiments and aspects of the disclosure are described in detail herein and are considered a part of the claimed disclosure.

In an exemplary embodiment, an isolation switch assembly of a switching device is disclosed. The disconnector assembly includes a first link pivotally coupled to a body of a circuit breaker of a switchgear. The first link includes a first end rotatably coupled to the shaft of the circuit breaker and a second end movably disposed in a slot defined in the body and configured for rotational displacement relative to the first end. Further, the isolation switch assembly includes a cam movably coupled to the second end of the first link and configured to move relative to displacement of the second end. Further, the disconnector assembly includes an actuation pin arranged on a platform connected to the main body and configured to be linearly displaced relative to the displacement of the cam. Additionally, the isolation switch assembly includes a second link pivotally coupled to the actuation pin and configured to pivot relative to linear displacement of the actuation pin between a first operational position and a second operational position for selective operation of the isolation switch assembly.

In one embodiment, the first operating position relates to a limited operation of the disconnector assembly corresponding to an on position of the circuit breaker, and the second operating position relates to an allowed operation of the disconnector assembly corresponding to an off position of the circuit breaker.

In one embodiment, the disconnector assembly includes a bracket between the cam and the second end of the first link. The bracket is configured to movably couple the cam with the second end of the first link.

In one embodiment, the cam includes a first side defining a tapered surface. The tapered surface is configured to contact and slide over the first end of the actuation pin to linearly displace the actuation pin corresponding to the displacement of the cam.

In one embodiment, the second link defines an opening configured to receive a protrusion extending from the platform. The opening is configured to move laterally by contacting the protrusion to assist the second link in pivoting between the first operating position and the second operating position.

In one embodiment, the disconnector assembly includes a guide member arranged on the platform, the guide member defining a cavity movably receiving the actuation pin and configured to guide a linear displacement of the actuation pin corresponding to a displacement of the cam.

In one embodiment, the isolation switch assembly includes a resilient member disposed on the platform and configured to apply a biasing force to the actuation pin to facilitate pivotal movement of the second link from the first operational position to the second operational position.

In another exemplary embodiment of the present disclosure, a switching device is disclosed. The switching device comprises at least one circuit breaker switchable between an on position and an off position, and at least one disconnector assembly switchable between an on position and an off position. The disconnector includes a first link pivotably coupled to a body of a circuit breaker of the switchgear. The first link includes a first end rotatably coupled to the shaft of the circuit breaker and a second end movably disposed in a slot defined in the body and configured to be displaced relative to rotation of the first end. Further, the disconnector assembly includes a cam movably coupled to the second end of the first link and configured to be displaced relative to displacement of the second end. Further, the disconnector assembly includes an actuation pin arranged on a platform connected to the main body and configured to be linearly displaced relative to the displacement of the cam. Additionally, the isolation switch assembly includes a second link pivotally coupled to the actuation pin and configured to pivot relative to linear displacement of the actuation pin between a first operational position and a second operational position for selective operation of the isolation switch assembly.

The foregoing summary is illustrative only and is not intended to be in any way limiting. In addition to the illustrative aspects, embodiments, and features described above, further aspects, embodiments, and features will become apparent by reference to the drawings and the following detailed description.

Drawings

The novel features and characteristics of the present disclosure are set forth in the specification. The disclosure itself, however, as well as a preferred mode of use, further objectives and advantages thereof, will best be understood by reference to the following description of an illustrative embodiment when read in conjunction with the accompanying drawings. One or more embodiments will now be described, by way of example only, with reference to the accompanying drawings, in which like reference numerals refer to like elements, and in which:

fig. 1 shows a perspective view of a switching device according to an embodiment of the invention, showing one operating position of the disconnector assembly.

Fig. 2 shows a perspective view of a switching device according to an embodiment of the invention, showing another operating position of the disconnector assembly.

Fig. 3 illustrates a perspective view of a portion of a disconnector assembly in an operating position in accordance with an embodiment of the present invention.

Fig. 4 illustrates a perspective view of a portion of a disconnector assembly in another operating position in accordance with an embodiment of the present invention.

The drawings depict embodiments of the present invention for purposes of illustration only. One skilled in the art will readily recognize from the following description that alternative embodiments of the structures and methods illustrated herein may be employed without departing from the principles of the disclosure described herein.

Detailed Description

The foregoing has outlined rather broadly the features and technical advantages of the present disclosure in order that the description of the disclosure that follows may be better understood. Additional features and advantages of the disclosure will be described hereinafter which form the subject of the disclosure. It should be appreciated by those skilled in the art that the conception and specific embodiment disclosed may be readily utilized as a basis for modifying or designing other systems for carrying out the same purposes of the present disclosure. Those skilled in the art should also realize that such equivalent constructions do not depart from the scope of the disclosure. The novel features which are believed to be characteristic of the present disclosure, both as to its organization and method of operation, together with further objects and advantages will be better understood from the following description when considered in connection with the accompanying figures. It is to be expressly understood, however, that each of the figures is provided for the purpose of illustration and description only and is not intended as a definition of the limits of the present disclosure.

While the invention is susceptible to various modifications and alternative forms, specific embodiments thereof have been shown by way of example in the drawings and will be described below. It should be understood, however, that there is no intent to limit the disclosure to the particular forms disclosed, but on the contrary, the disclosure is to cover all modifications, equivalents, and alternatives falling within the scope of the disclosure.

The terms "comprises," "comprising," or any other variation thereof, as used in the present disclosure, are intended to cover a non-exclusive inclusion, such that a component that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such elements. In other words, without further limitation, one or more elements in an assembly beginning with "comprising" does not exclude the presence of other elements or additional elements in a system or apparatus.

The following paragraphs describe the present disclosure with reference to fig. 1 to 4. In the drawings, the same elements or elements having similar functions are denoted by the same reference numerals. For the purposes of promoting and understanding the principles of the disclosure, reference will now be made to the particular embodiments illustrated in the drawings and specific language will be used to describe the same. It will nevertheless be understood that no limitation of the scope of the invention is thereby intended, such alterations and further modifications in the illustrated method, and such further applications of the principles of the invention as illustrated therein being contemplated as would normally occur to one skilled in the art to which the invention relates.

The following detailed description is merely exemplary in nature and is not intended to limit applications and uses. Furthermore, there is no intention to be bound by any theory presented in the preceding background or the summary or the following detailed description. It is to be understood that the present disclosure may assume various alternative orientations and step sequences, except where expressly specified to the contrary. It is also to be understood that the specific devices or elements illustrated in the attached drawings and described in the following specification are simply exemplary embodiments of the concepts defined in the appended claims. Hereinafter, preferred embodiments of the present disclosure will be described with reference to the accompanying drawings. Although some specific terms pointing in specific directions will be used, these terms or words are used only for convenience in understanding the present invention with reference to the accompanying drawings.

Therefore, it should be noted that the meanings of these terms or words should not unduly limit the technical scope of the present invention. Also, it is to be understood that the phraseology and terminology used herein is for the purpose of description and should not be regarded as limiting. Unless specified or limited otherwise, the terms "connected," "arranged," and "coupled" and variations thereof are used broadly and encompass both direct and indirect mountings, connections, supports, and couplings. Furthermore, "connected" and "coupled" are not restricted to physical or mechanical connections or couplings. It is to be understood that this disclosure is not limited to the particular devices, methods, applications, conditions or parameters described and/or shown herein, and that the terminology used herein is for the purpose of describing particular embodiments by way of example only and is not intended to be limiting of the disclosure. The word "exemplary" is used herein to mean "serving as an example, instance, or illustration. Any embodiment or implementation of the subject matter described herein as "exemplary" is not necessarily to be construed as preferred or advantageous over other embodiments.

Referring generally to fig. 1-4, exemplary embodiments of an isolation switch assembly for a switchgear are disclosed. The disconnector assembly in the corresponding figure is denoted by reference numeral "103" and the switchgear is denoted by reference numeral "100" (see fig. 1). The switchgear 100, as well as other components, may comprise at least one circuit breaker 102, at least one disconnector assembly 103, the circuit breaker 102 being switchable between an on position and an off position, the disconnector assembly 103 being switchable between an on position and an off position, enclosed in the body 120 together with one or more protection devices, one or more metering devices, etc. The body 120 may be made of a metallic material such as, but not limited to, steel alloys, and metal composites. In some embodiments, the body 120 may be made of a composite material, such as, but not limited to, a polymer composite material.

The isolator assembly 103 may include a handle access port 125 that may be configured to receive a tool (not shown in the figures) for operation of the isolator assembly 103. Further, the disconnector assembly 103 may be selectively operated based on the operating conditions of the circuit breaker 102. That is, when the circuit breaker 102 is in the on position, operation of the isolation switch assembly 103 may be restricted, and when the circuit breaker 102 is in the off position, operation of the isolation switch assembly 103 may be permitted. In the following sections, the configuration of the disconnector assembly 103 and the selective operation of the disconnector assembly 103 are described.

Referring now to fig. 2-4 in conjunction with fig. 1, the disconnector assembly 103 may include a first link 106, the first link 106 being pivotably coupled to a main body 120 of the circuit breaker. The first link 106 may include a first end 107, the first end 107 being rotatably coupled to the shaft 105 of the circuit breaker 102. Further, the first link 106 may include a second end 108, and the second end 108 may be disposed in a slot 116 defined in the body 120 and configured to be linearly displaced within the slot 116. The second end 108 may be configured to be displaced relative to the rotation of the first end 107. Further, as shown in fig. 1-4, the isolation switch assembly 103 may include a cam 110, the cam 110 being movably coupled to the second end 108 of the first link 106. The cam 110 may be configured to be displaced relative to the displacement of the second end 108. In one embodiment, the cam 110 may include a first side 122, and the first side 122 may define a tapered surface 121 (best shown in fig. 3). In another embodiment, the isolation switch assembly 103 may include a bracket 109, and the bracket 109 may be positioned between the cam 110 and the second end 108 of the first link 106. The bracket 109 may be configured to movably couple the cam 110 and the second end 108 of the first link 106 such that the cam 110 may be displaced relative to the displacement of the second end 108 of the first link 106. For example, the bracket 109 may be removably coupled to the second end 108 of the first link 106 by mechanical engagement (such as by using fasteners) or may be rigidly coupled by a thermal engagement process (e.g., welding, brazing, etc.). In the illustrated embodiment, the bracket 109 defines an L-shaped profile and is not to be construed as limiting, as the bracket 109 may include any other profile as desired.

As shown in fig. 1-4, the isolation switch assembly 103 may include an actuation pin 111, and the actuation pin 111 may include a first end 113 and a second end 114. The actuation pin 111 may be disposed on a platform 112 coupled to the body 120 and may be configured to be linearly displaced relative to the displacement of the cam 110. In one embodiment, the isolation switch assembly 103 may include a guide member 123, and the guide member 123 may be disposed on the platform 112. The guide member 123 may define a cavity to movably receive the actuation pin 111 and to facilitate guiding the linear displacement of the actuation pin 111. In other words, the actuation pin 111 may be inserted through the cavity of the guide member 123 such that the guide member 123 may be movably supported and may guide the linear displacement of the actuation pin 111. In the illustrated embodiment, the guide member 123 is similar to a square shape and should not be construed as limiting, as the guide member 123 may include any other geometric shape based on requirements

Furthermore, as best seen in fig. 3 and 4, in one embodiment, the tapered surface 121 of the cam 110 may be configured to contact the first end 113 of the actuation pin 111 and slide over the first end 113 of the actuation pin 111 for linearly displacing the actuation pin 111 in response to displacement of the cam 110. That is, the first end 113 of the actuating pin 111 may continuously slide on the tapered surface 121 of the cam 110 with respect to the displacement of the cam 110, and the actuating pin 111 may be linearly displaced due to the thickness variation of the tapered surface 121. For example, as shown in fig. 1 and 2, displacement of the cam 110 in direction a' may result in linear displacement of the actuation pin 111 in direction a ". Further displacement of the cam 110 in direction B' may result in linear displacement of the actuation pin 111 in direction B ". However, as such, it should not be considered a limitation, as the actuator may be displaced linearly in direction a "corresponding to the displacement of the cam 110 in direction B', and vice versa.

In one embodiment, directions a 'and B' may be parallel to the bracket 109 and directions a "and B" may be perpendicular to the cam 110.

Further, the isolation switch assembly 103 may include a second link 115, the second link 115 being pivotably coupled to the actuation pin 111. In the illustrated embodiment, the second link 115 is pivotally coupled to the second end 114 of the actuation pin 111. However, as such, should not be construed as limiting, as the second link 115 may be coupled to any portion along the length of the actuation pin 111. The second link 115 may be configured to pivot relative to linear displacement of the actuation pin 111 between a first operational position (shown in fig. 1) and a second operational position (shown in fig. 2) for selective operation of the isolation switch assembly. As an example, linear displacement of the actuation pin 111 in the direction a "may cause the second link 115 to pivot from the first operative position to the second operative position, while linear displacement of the actuation pin 111 in the direction B" may cause the second link 115 to pivot from the second operative position to the first operative position. However, again, this should not be construed as limiting, as the second link 115 may pivot from the first operative position to the second operative position and vice versa with respect to the linear displacement of the actuation pin 111 in direction B ".

In one embodiment, the first operational position may relate to a restricted operation of the disconnector assembly 103 corresponding to an on position of the circuit breaker 102. In the first operating position, the second linkage 115 may block the handle access port 125, thereby mitigating tool insertion into the handle access port 125, thereby limiting operation of the isolation switch assembly 103. Further, the second operational position may relate to an allowed operation of the disconnector assembly 103 corresponding to the off position of the circuit breaker 102, wherein the second link 115 may be moved away from the handle access port 125, allowing a tool to be inserted into the handle access port 125 for operating the disconnector assembly 103.

In one embodiment, the second link 115 may define an opening 117. The opening 117 may be configured to receive a tab 118 extending from the platform 112. The projection 118 may extend perpendicularly away from the platform 112 along the axis A-A and may protrude through the opening 117. The opening 117 may be configured to be traversed by the contact tab 118 during pivoting of the second link 115, thereby facilitating pivoting of the second link 115 between the first and second operating positions.

With further reference to fig. 1-3, the isolation switch assembly 103 may include a resilient member 119 that may be disposed on the platform 112. One end of the resilient member 119 may be rigidly coupled to the platform 112, while the other end opposite the one end is rigidly coupled to the second end of the actuation pin 111. As an example, the elastic member 119 may be rigidly coupled by a fastener such as a nut bolt, a screw, or the like. The resilient member 119 may be configured to apply a biasing force to the actuation pin 111 to facilitate pivotal movement of the second link 115 from the first operative position to the second operative position.

By way of example, the resilient member 119 may be, but is not limited to, a spring, a mechanical linkage, a return member, or the like.

In one operational embodiment, as shown in fig. 1 and 3, when in the first operational position, the second link 115 blocks the handle access port 125 to limit operation of the isolation switch assembly 103 corresponding to the on position. During switching of the circuit breaker 102 to the off position, the shaft 105 in the circuit breaker 102 rotates, as a result of which the first end 107 of the first link 106 rotates (and thus swings), thereby causing the second end 108 of the first link 106 to displace in the direction a within the slot 116 defined in the body 120. In one embodiment, the shaft 105 may rotate in one of a clockwise or counter-clockwise direction based on the mounting direction. The displacement of the second end 108 of the first link 106 may result in a linear displacement of the bracket 109 in the direction a', thereby causing the cam 110 to displace in the same direction as the bracket 109. Due to the displacement of the cam 110 in the direction a', the actuation pin 111 may move linearly in the direction a″ due to the biasing force exerted on the actuation pin 111 by the resilient member 119. Due to the linear displacement of the actuation pin 111 in direction a ", the second link 115 may pivot about its second end 114 from the first operative position to a second operative position (as shown in fig. 2 and 4), where the second link 115 pivots away from the handle access port 125 of the disconnector assembly 103, thereby allowing access to the handle access port 125 for operating the disconnector assembly 103.

In another operational embodiment, as shown in fig. 2 and 4, the second link 115 allows operation of the disconnector assembly 103 corresponding to the off position of the circuit breaker 102 when in the second operational position. Corresponding to switching the circuit breaker 102 to the on position, the shaft 105 in the circuit breaker 102 may be rotated, as a result of which the first end 107 of the first link 106 is rotated, thereby causing the second end 108 of the first link 106 to be displaced in the direction B within the slot 116 defined in the body 120. In one embodiment, the shaft 105 may rotate in one of a clockwise or counter-clockwise direction based on the mounting direction. As an example, if the shaft 105 rotates in a clockwise direction during switching the circuit breaker 102 to the off position, the shaft 105 may rotate in a counterclockwise direction when switching the circuit breaker 102 to the on position. The displacement of the second end 108 of the first link 106 may result in a linear displacement of the bracket 109 in the direction B', resulting in a displacement of the cam 110 in the same direction as the bracket 109. During displacement of the cam 110, the tapered surface 121 of the cam 110 may continuously contact the first end 113 of the actuation pin 111 as the actuation pin 111 is displaced linearly in the direction B ", but is not limited to displacement perpendicular to the cam 110. That is, with the cam 110 defining the tapered surface 121, simultaneous displacement and contact of the cam 110 with the first end 113 of the actuation pin 111 results in linear displacement of the actuation pin 111 in direction B ". Due to the linear displacement of the actuation pin 111, the second link 115 may pivot about the second end 114 of the actuation pin 111 from its second operative position to a first operative position (as shown in fig. 1 and 3), where the second link 115 blocks the handle access port 125 when the circuit breaker 102 is in its on position, thereby limiting operation of the disconnector assembly 103. Thus, the interlock mechanism allows operation of the disconnector assembly 103 when the circuit breaker 102 is in the off position.

In one embodiment, the disconnector assembly 103 is simple and compact in structure. Further, the disconnector assembly 103 is reliable and has a working life of about 10,000 to 15,000 working cycles (i.e. selective operation of the disconnector assembly).

It should be appreciated that those of ordinary skill in the art can develop isolation switch assemblies having similar configurations without departing from the scope of the present invention. Such modifications and variations may be made without departing from the scope of the invention. Accordingly, the present disclosure is intended to cover such modifications and variations as fall within the scope of the appended claims and their equivalents.

Equivalents (Eq.)

With respect to the use of substantially any plural and/or singular terms herein, those having skill in the art can translate from the plural to the singular and/or from the singular to the plural as is appropriate to the context and/or application. For clarity, various singular/plural permutations may be explicitly set forth herein.

It will be understood by those within the art that, in general, terms used herein, and especially in the appended claims, such as the subject of the appended claims, are generally intended as "open" terms, e.g., the term "including" should be interpreted as "including but not limited to," the term "having" should be interpreted as "having at least," the term "comprising" should be interpreted as "including but not limited to," etc. Those skilled in the art will also understand that if a specific number of an introduced claim recitation is intended, such an intent will be explicitly recited in the claim, and in the absence of such recitation no such intent is present. For example, as an aid to understanding, the following appended claims may contain usage of the introductory phrases "at least one" and "one or more" to introduce claim recitations. However, the use of such phrases should not be construed to imply that the introduction of a claim recitation by the indefinite articles "a" or "an" limits any particular claim containing such introduced claim recitation to inventions containing only one such recitation, even when the same claim includes the introductory phrases "one or more" or "at least one", and indefinite articles such as "a" or "an" e.g. "one" and/or "an" are typically interpreted to mean "at least one" or "one or more"; the same holds true for the use of definite articles used to introduce claim recitations. Furthermore, even if a specific number of an introduced claim recitation is explicitly recited, those skilled in the art will recognize that such recitation should typically be interpreted to mean at least the recited number, and the bare recitation of "two recitations," e.g., the bare recitation of other modifiers, typically means at least two recitations, or two or more recitations. Further, in those cases, a convention similar to at least one of "A, B and C, etc. is used. Generally, using such a configuration, for example, "a system 108 having at least one of A, B and C" would include, but is not limited to, a system having a alone, B alone, C, A and B together, a and C together, B and C together, and/or A, B and C together, etc., in the sense that persons skilled in the art understand the convention. In those cases, where convention is used, at least one of "A, B or C, etc. is analogous. Generally, using such a configuration, for example, "a system 108 having at least one of A, B or C" would include, but is not limited to, a system having a alone, B alone, C, A and B together, a and C together, B and C together, and/or A, B and C together, etc., in the sense that persons skilled in the art understand the convention. Those skilled in the art will further appreciate that virtually any disjunctive word and/or phrase presenting two or more alternative terms in the description, claims, or drawings should be understood to encompass the possibility of including one of the terms, either or both of the terms. For example, the phrase "a or B" will be understood to include the possibilities of "a" or "B" or "a and B". While various aspects and embodiments have been disclosed herein, other aspects and embodiments will be apparent to those skilled in the art. The various aspects and embodiments disclosed herein are for purposes of illustration and are not intended to be limiting, with the true scope and spirit being indicated by the following claims.

Reference numerals

Claims

1. An isolating switch assembly (103) of a switching device (100), comprising:

a first link (106) pivotably coupled to a body (120) of a circuit breaker (102) of the switchgear (100), the first link (106) including a first end (107) and a second end (108), the first end (107) being rotatably coupled to a shaft (105) of the circuit breaker (102), the second end (108) being movably disposed in a slot (116) defined in the body (120) and configured to be displaced relative to rotation of the first end (107);

a cam (110) movably connected to the second end (108) of the first link (106) and configured to be displaced relative to displacement of the second end (108);

an actuation pin (111) arranged on a platform (112) connected to the body (120) and configured to be linearly displaced with respect to the displacement of the cam (110); and

a second link (115) is pivotably coupled to the actuation pin (111) and configured to pivot relative to linear displacement of the actuation pin (111) between a first operational position and a second operational position for selective operation of the isolation switch assembly (103).

2. The disconnector assembly (103) according to claim 1, wherein the first operating position relates to a limited operation of the disconnector assembly (103) corresponding to an on position of the circuit breaker (102).

3. The disconnector assembly (103) according to claim 1, wherein the second operating position relates to an allowed operation of the disconnector assembly (103) corresponding to an off position of the circuit breaker (102).

4. The disconnector assembly (103) of claim 1, further comprising a bracket (109), the bracket (109) being positioned between the cam (110) and the second end (108) of the first link (106) and configured to movably couple the cam (110) with the second end (108) of the first link (106).

5. The disconnector assembly (103) of claim 1, wherein the cam (110) comprises a first side (122), the first side (122) defining a tapered surface (121).

6. The disconnector assembly (103) of claim 5, wherein the tapered surface (121) is configured to contact the first end (113) of the actuation pin (111) and slide over the first end (113) of the actuation pin (111) for linearly displacing the actuation pin (111) in correspondence with the displacement of the cam (110).

7. The isolator assembly (103) of claim 1, wherein the second link (115) defines an opening (117), the opening (117) configured to receive a protrusion (118) extending from the platform (112).

8. The disconnector assembly (103) of claim 7, wherein the opening (117) is configured to be traversed by contacting the protrusion (118) to facilitate pivoting of the second link (115) between the first and second operative positions.

9. The disconnector assembly (103) of claim 1, comprising a guide member (123) arranged on the platform (112), the guide member (123) defining a cavity to movably receive the actuation pin (111) and configured to guide a linear displacement of the actuation pin (111) corresponding to a displacement of the cam (110).

10. The disconnector assembly (103) of claim 1, comprising a resilient member (119), the resilient member (119) being arranged on the platform (112) and configured to apply a biasing force to the actuation pin (111) to facilitate pivotal movement of the second link (115) from the first operating position to the second operating position.

11. A switching device (100), comprising:

at least one circuit breaker (102) switchable between an on position and an off position;

at least one disconnector assembly (103) switchable between said on position and said off position, wherein said disconnector assembly (103) comprises:

a first link (106) pivotably coupled to a body (120) of a circuit breaker (102) of the switching device (100), the first link (106) including a first end (107) and a second end (108), the first end (107) being rotatably coupled to a shaft (105) of the circuit breaker (102), the second end (108) being movably disposed in a slot (116) defined in the body (120) and configured to be displaced relative to displacement of the first end (107);

12. The switching device (100) of claim 11, wherein the first operating position relates to a limit operation of the disconnector assembly (103) corresponding to an on position of the circuit breaker (102).

13. The switching device (100) of claim 11, wherein the second operating position relates to an allowed operation of the disconnector assembly (103) corresponding to an off position of the circuit breaker (102).