The present disclosure relates to the field of switchgear. More
particularly the present disclosure relates to a racking assembly for performing rack in and rack out operation of vacuum circuit breaker inside the switchgear.
BACKGROUND
[0002] Background description includes information that may be useful in
understanding the present invention. It is not an admission that any of the
information provided herein is prior art or relevant to the presently claimed
invention, or that any publication specifically or implicitly referenced is prior art.
[0003] Conventionally, a vacuum circuit breaker in a switchgear is racked
in or racked out of the switchgear time to time depending upon requirement. A handle bar is typically used to perform the discussed operation. However, there are chances that a spark or hot air pressure might come out of the switchgear from an opening where the handle bar is inserted. This is because the hole in the switchgear is much greater than a diameter of the handle for the sake of visibility. The hot gases coming out of the switchgear might injured an operator working on the switchgear.
[0004] There is, therefore, a need of an improved racking mechanism for
the switchgear which avoids chances for hot gases to come out of the switchgear.
OBJECTS OF THE PRESENT DISCLOSURE
[0005] Some of the objects of the present disclosure, which at least one
embodiment herein satisfies are as listed herein below.
[0006] It is an object of the present disclosure to provide a racking
assembly for a switch gear, which avoids any spark, arc or hot air pressure coming
out of the switchgear while performing rack in and rack out operation of vacuum
circuit breaker inside the switchgear.
[0007] It is an object of the present disclosure to provide a racking
assembly for a switch gear, which is easy to use.

[0008] It is an object of the present disclosure to provide a racking
assembly for a switch gear, which is cost effective.
[0009] It is an object of the present disclosure to provide a racking
assembly for a switch gear, which requires less maintenance cost.
SUMMARY
[0010] The present disclosure relates to the field of switchgear. More
particularly the present disclosure relates to a racking assembly for performing
rack in and rack out operation of vacuum circuit breaker inside the switchgear.
[0011] An aspect of the present disclosure pertains to a racking assembly
adapted to be configured with a first opening of a door of a switchgear. The racking assembly includes a cylindrical casing having a second opening corresponding to the first opening of the door. The cylindrical casing includes therein a retractable arrangement corresponding to the second opening. A handle bar is configured to be inserted in the second opening, from a first end of the cylindrical casing, such that the handle bar presses the retractable arrangement in a first direction. An extendable member configured at a second end of the cylindrical casing, and the pressing of the retractable arrangement in the first direction facilitates pressing of the extendable direction in the first direction such that the extendable member engages with a racking member of a vacuum circuit breaker inside the switchgear.
[0012] In an aspect, once the extendable member is engaged with the
racking member, a rotation of the handle bar in any of the clockwise or anticlockwise direction may cause corresponding rotating effect to the racking member for facilitating racking operation of the vacuum circuit breaker inside the switchgear.
[0013] In an aspect, the extendable member may comprise a cavity
corresponding to the racking member for facilitating the engagement of the extendable member with the racking member.

[0014] In an aspect, the cylindrical casing may comprise one or more
gasket rings adjacent to the retractable arrangement for absorbing any shock while
performing the racking operation.
[0015] In an aspect, the retractable arrangement may comprise a
cylindrical member and a spring.
[0016] In an aspect, the cylindrical casing may comprise one or more
movable covers configured to be moved from a first position to a second position
for having access to the second opening for inserting the handle bar.
[0017] Various objects, features, aspects and advantages of the inventive
subject matter will become more apparent from the following detailed description
of preferred embodiments, along with the accompanying drawing figures in which
like numerals represent like components.
BRIEF DESCRIPTION OF DRAWINGS
[0018] The accompanying drawings are included to provide a further
understanding of the present disclosure, and are incorporated in and constitute a part of this specification. The drawings illustrate exemplary embodiments of the present disclosure and, together with the description, serve to explain the principles of the present disclosure. The diagrams are for illustration only, which thus is not a limitation of the present disclosure.
[0019] In the figures, similar components and/or features may have the
same reference label. Further, various components of the same type may be distinguished by following the reference label with a second label that distinguishes among the similar components. If only the first reference label is used in the specification, the description is applicable to any one of the similar components having the same first reference label irrespective of the second reference label.
[0020] FIG. 1 illustrates exemplary representation of racking mechanism
for switchgear when one or more covers of the racking assembly are closed/open, in accordance with an embodiment of the present disclosure.

[0021] FIG. 2 illustrates an exploded view of the racking assembly, in
accordance with an embodiment of the present disclosure.
[0022] FIG. 3 A illustrates exemplary representation of racking mechanism
for switchgear when the handle bar is not inserted in second opening, and FIG. 3B
illustrates exemplary representation of racking mechanism for switchgear when
the handle bar is inserted in second opening and the retractable arrangement is
pressed, in accordance with an embodiment of the present disclosure.
[0023] FIG. 4A illustrates exemplary representation of racking mechanism
for switchgear when an extendable member of the racking assembly is not engaged with a racking member of the switchgear, and FIG. 4B illustrates exemplary representation of racking mechanism for switchgear when an extendable member of the racking assembly is engaged with a racking member of the switchgear.
DETAILED DESCRIPTION
[0024] The following is a detailed description of embodiments of the
disclosure depicted in the accompanying drawings. The embodiments are in such detail as to clearly communicate the disclosure. However, the amount of detail offered is not intended to limit the anticipated variations of embodiments; on the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the scope of the present disclosure as defined by the appended claims.
[0025] In the following description, numerous specific details are set forth
in order to provide a thorough understanding of embodiments of the present
invention. It will be apparent to one skilled in the art that embodiments of the
present invention may be practiced without some of these specific details.
[0026] The present disclosure relates to the field of switchgear. More
particularly the present disclosure relates to a racking assembly for performing
rack in and rack out operation of vacuum circuit breaker inside the switchgear.
[0027] The present disclosure elaborates upon a racking assembly adapted
to be configured with a first opening of a door of a switchgear. The racking

assembly includes a cylindrical casing having a second opening corresponding to
the first opening of the door. The cylindrical casing includes therein a retractable
arrangement corresponding to the second opening. A handle bar is configured to
be inserted in the second opening, from a first end of the cylindrical casing, such
that the handle bar presses the retractable arrangement in a first direction. An
extendable member configured at a second end of the cylindrical casing, and the
pressing of the retractable arrangement in the first direction facilitates pressing of
the extendable direction in the first direction such that the extendable member
engages with a racking member of a vacuum circuit breaker inside the switchgear.
[0028] In an embodiment, once the extendable member is engaged with
the racking member, a rotation of the handle bar in any of the clockwise or
anticlockwise direction can cause corresponding rotating effect to the racking
member for facilitating racking operation of the vacuum circuit breaker inside the
switchgear.
[0029] In an embodiment, the extendable member can comprise a cavity
corresponding to the racking member for facilitating the engagement of the
extendable member with the racking member.
[0030] In an embodiment, the cylindrical casing can comprise one or more
gasket rings adjacent to the retractable arrangement for absorbing any shock while
performing the racking operation.
[0031] In an embodiment, the retractable arrangement can comprise a
cylindrical member and a spring.
[0032] In an embodiment, the cylindrical casing can comprise one or more
movable covers configured to be moved from a first position to a second position
for having access to the second opening for inserting the handle bar.
[0033] FIG. 1 illustrates exemplary representation of racking mechanism
for switchgear when one or more covers of the racking assembly are closed/open,
in accordance with an embodiment of the present disclosure.
[0034] FIG. 2 illustrates an exploded view of the racking assembly, in
accordance with an embodiment of the present disclosure.

[0035] FIG. 3 A illustrates exemplary representation of racking mechanism
for switchgear when the handle bar is not inserted in second opening, and FIG. 3B
illustrates exemplary representation of racking mechanism for switchgear when
the handle bar is inserted in second opening and the retractable arrangement is
pressed, in accordance with an embodiment of the present disclosure.
[0036] FIG. 4A illustrates exemplary representation of racking mechanism
for switchgear when an extendable member of the racking assembly is not engaged with a racking member of the switchgear, and FIG. 4B illustrates exemplary representation of racking mechanism for switchgear when an extendable member of the racking assembly is engaged with a racking member of the switchgear.
[0037] As illustrated, a racking assembly 100 can include a cylindrical
casing 102 having a second opening corresponding to a first opening (not shown) of a door 108 of the switchgear. The cylindrical casing 102 can include a retractable arrangement 104 corresponding to the second opening. A handle bar 106 can be configured to be inserted in the second opening, from a first end of the cylindrical casing 102. While inserting the handle bar 106 the handle bar 106 can press, against a plate 126, the retractable arrangement 104 in a first direction (as shown in FIG. 3B). The first direction can be in the direction towards the door 108. The retractable arrangement 104 can include but not limited to a combination of a cylindrical member 110 and a spring 112.
[0038] In an embodiment, an extendable member 114 can be configured at
a second end of the cylindrical casing 102. The pressing of the retractable arrangement 104 in the first direction can facilitate pressing of the extendable direction 114 in the first direction such that the extendable member 114 can engage with a racking member 116 of a vacuum circuit breaker inside the switchgear (as shown in FIG. 4B). Once the extendable member 114 is engaged with the racking member 116, a rotation of the handle bar 106 in any of the clockwise or anticlockwise direction can cause corresponding rotating effect to the racking member 116 for facilitating racking operation of the vacuum circuit breaker inside the switchgear.

[0039] In an embodiment, the extendable member 114 can comprise a
cavity corresponding and similar in shape of the racking member 116 for facilitating the engagement of the extendable member 114 with the racking member 116. The cylindrical casing 102 can comprise one or more gasket rings 118 adjacent to the retractable arrangement 104 for absorbing any shock while performing the racking operation. The cylindrical casing 102 can comprise one or more movable covers 120 configured to be moved from a first position to a second position for having access to the second opening 122 for inserting the handle bar 106. The one or more covers 120 can be coupled together through a pin 124.
[0040] In an embodiment, the racking assembly 100 can be configured
with the first opening of the door such that there is no gap left in between to avoid any spark or pressure to come out of the junction. A diameter of the racking assembly can be greater than a diameter of the first opening of the door so as to prevent any spark or pressure to come out of the switchgear. This can be very much useful in avoiding any possibility of an injury to an operator working on the switchgear.
[0041] Moreover, in interpreting the specification, all terms should be
interpreted in the broadest possible manner consistent with the context. In particular, the terms "comprises" and "comprising" should be interpreted as referring to elements, components, or steps in a non-exclusive manner, indicating that the referenced elements, components, or steps may be present, or utilized, or combined with other elements, components, or steps that are not expressly referenced. Where the specification claims refer to at least one of something selected from the group consisting of A, B, C ....and N, the text should be interpreted as requiring only one element from the group, not A plus N, or B plus N, etc.
[0042] While the foregoing describes various embodiments of the
invention, other and further embodiments of the invention may be devised without departing from the basic scope thereof. The scope of the invention is determined by the claims that follow. The invention is not limited to the described

embodiments, versions or examples, which are included to enable a person having ordinary skill in the art to make and use the invention when combined with information and knowledge available to the person having ordinary skill in the art.
ADVANTAGES OF THE INVENTION
[0043] The proposed invention provides a racking assembly for a switch
gear, which avoids any spark or hot air pressure coming out of the switchgear
while performing rack in and rack out operation of vacuum circuit breaker inside
the switchgear.
[0044] The proposed invention provides a racking assembly for a switch
gear, which is easy to use.
[0045] The proposed invention provides a racking assembly for a switch
gear, which is cost effective.
[0046] The proposed invention provides a racking assembly for a switch
gear, which requires less maintenance cost.

We Claim:

1. A racking assembly adapted to be configured with a first opening of a door
of a switchgear, the racking assembly comprising:
a cylindrical casing having a second opening corresponding to the first opening of the door, the cylindrical casing comprises therein:
a retractable arrangement corresponding to the second opening, wherein a handle bar is configured to be inserted in the second opening, from a first end of the cylindrical casing, such that the handle bar presses the retractable arrangement in a first direction, and
an extendable member configured at a second end of the cylindrical casing, wherein the pressing of the retractable arrangement in the first direction facilitates pressing of the extendable direction in the first direction such that the extendable member engages with a racking member of a vacuum circuit breaker inside the switchgear.
2. The racking assembly as claimed in claim 1, wherein once the extendable member is engaged with the racking member, a rotation of the handle bar in any of the clockwise or anticlockwise direction causes corresponding rotating effect to the racking member for facilitating racking operation of the vacuum circuit breaker inside the switchgear.
3. The racking assembly as claimed in claim 2, wherein the extendable member comprises a cavity corresponding to the racking member for facilitating the engagement of the extendable member with the racking member.
4. The racking assembly as claimed in claim 2, wherein the cylindrical casing comprises one or more gasket rings adjacent to the retractable arrangement for absorbing any shock while performing the racking operation.
5. The racking assembly as claimed in claim 1, wherein the retractable arrangement comprises a cylindrical member and a spring.

6. The racking assembly as claimed in claim 1, wherein the cylindrical casing comprises one or more movable covers configured to be moved from a first position to a second position for having access to the second opening for inserting the handle bar.