The present disclosure relates to the field of switchgear. More
particularly the present disclosure relates to a secondary tripping assembly for tripping vacuum circuit breaker of 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] In an electrical power distribution system, a switchgear is a factory
assembled, metal enclosed panel used at the various transmission and distribution level of an electrical power system. It requires a reliable fault clearing mechanism. For that a secondary tripping assembly is generally provided to trip a vacuum circuit breaker in case of any electrical fault. Also, an additional resetting system for resetting the secondary tripping assembly is included which increase cost and complexity of the switchgear.
[0004] There is, therefore, a need of an improved secondary tripping
assembly that is self-capable of resetting after performing tripping of the vacuum circuit breaker.
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 secondary
tripping assembly that does not require any resetting system for resetting the
secondary tripping assembly.
[0007] It is an object of the present disclosure to provide a secondary
tripping assembly that is easy to use.
[0008] It is an object of the present disclosure to provide a cost-effective
secondary tripping assembly for the switchgear.

[0009] It is an object of the present disclosure to provide a secondary
tripping assembly for the switchgear which requires less maintenance cost.
SUMMARY
[0010] The present disclosure relates to the field of switchgear. More
particularly the present disclosure relates to a secondary tripping assembly for tripping vacuum circuit breaker of the switchgear.
[0011] An aspect of the present disclosure pertains to a secondary tripping
assembly for a vacuum circuit breaker in a switchgear. The secondary tripping assembly includes a magnetic tripping coil operatively coupled with the vacuum circuit breaker. The magnetic tripping coil includes a movable part configured to extend in a first direction to trip the vacuum circuit breaker in case of any fault in operation of the switchgear. A reset mechanism operatively configured with the magnetic tripping coil to facilitate resetting of the magnetic tripping coil after the magnetic tripping coils trips the vacuum circuit breaker. The reset mechanism includes a bracket having an arm pivotally configured, from centre of the arm, with the bracket such that when a first end of the arm moved in the first direction. A second end of the arm moves in a second direction opposite to the first direction. Also, when the first end of the arm moved in the second direction, the second end of the arm moves in the first direction, and a vertical member comprising. A third end coupled with the second end of the arm through an arrangement such that the vertical member and the second end are configured to move in the same direction of the first direction and the second direction, and a fourth end coupled with a cam shaft of the vacuum circuit breaker. The movable part trips the vacuum circuit breaker simultaneously the cam shaft is rotated by a pre-determined rotation angle causing the vertical member to move in the first direction facilitating the movement of the first end in the second direction for resetting the magnetic coil by pushing the movable part along the second direction.
[0012] In an aspect, the bracket may be C-type bracket and the arm is
positioned at a first side of the bracket.

[0013] In an aspect, the magnetic tripping coil may be positioned on a
second side of the bracket corresponding to the first end of the arm such that the
movement of the first end in the second direction pushes the movable part in the
second direction.
[0014] In an aspect, the arrangement may comprise a combination of a
spring and a bolt.
[0015] In an aspect, the magnetic tripping coil may be configured to rotate
a tripping shaft of the vacuum circuit breaker to open electrical contacts of the
vacuum circuit breaker to perform tripping of the vacuum circuit breaker.
[0016] In an aspect, the movement of the movable part in the first
direction may be configured to push a trip pedal, coupled with the tripping shaft,
in the first direction for facilitating the rotation of the tripping shaft.
[0017] In an aspect, the movement of the movable part in the second
direction, through the first end, may allow the trip pedal to comes to its initial
position after the vacuum circuit breaker is tripped.
[0018] 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
[0019] 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.
[0020] 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.
[0021] FIG. 1 illustrates exemplary representation of a secondary tripping
assembly, in accordance with an embodiment of the present disclosure.
[0022] FIG. 2 illustrates exemplary representation of a resetting assembly
of the secondary tripping assembly, in accordance with an embodiment of the
present disclosure.
[0023] FIG. 3 illustrates exemplary representation of a magnetic tripping
coil, in accordance with an embodiment of the present disclosure.
[0024] FIG. 4 illustrates exemplary representation the secondary tripping
coil inside a switchgear, in accordance with an embodiment of the present
disclosure.
DETAILED DESCRIPTION
[0025] 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.
[0026] 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.
[0027] The present disclosure relates to the field of switchgear. More
particularly the present disclosure relates to a secondary tripping assembly for tripping vacuum circuit breaker of the switchgear.
[0028] The present disclosure elaborates upon a secondary tripping
assembly for a vacuum circuit breaker in a switchgear. The secondary tripping

assembly includes a magnetic tripping coil operatively coupled with the vacuum circuit breaker. The magnetic tripping coil includes a movable part configured to extend in a first direction to trip the vacuum circuit breaker in case of any fault in operation of the switchgear. A reset mechanism operatively configured with the magnetic tripping coil to facilitate resetting of the magnetic tripping coil after the magnetic tripping coils trips the vacuum circuit breaker. The reset mechanism includes a bracket having an arm pivotally configured, from centre of the arm, with the bracket such the when a first end of the arm moved in the first direction. A second end of the arm moves in a second direction opposite to the first direction, and when the first end of the arm moved in the second direction, the second end of the arm moves in the first direction, and a vertical member comprising. A third end coupled with the second end of the arm through an arrangement such that the vertical member and the second end are configured to move in the same direction of the first direction and the second direction, and a fourth end coupled with a cam shaft of the vacuum circuit breaker. The movable part trips the vacuum circuit breaker simultaneously the cam shaft is rotated by a pre-determined rotation angle causing the vertical member to move in the first direction facilitating the movement of the first end in the second direction for resetting the magnetic coil by pushing the movable part along the second direction.
[0029] In an embodiment, the bracket can be C-type bracket and the arm
is positioned at a first side of the bracket.
[0030] In an embodiment, the magnetic tripping coil can be positioned on
a second side of the bracket corresponding to the first end of the arm such that the movement of the first end in the second direction pushes the movable part in the second direction.
[0031] In an embodiment, the arrangement can comprise a combination of
a spring and a bolt.
[0032] In an embodiment, the magnetic tripping coil can be configured to
rotate a tripping shaft of the vacuum circuit breaker to open electrical contacts of the vacuum circuit breaker to perform tripping of the vacuum circuit breaker.

[0033] In an embodiment, the movement of the movable part in the first
direction can be configured to push a trip pedal, coupled with the tripping shaft, in
the first direction for facilitating the rotation of the tripping shaft.
[0034] In an embodiment, the movement of the movable part in the second
direction, through the first end, can allow the trip pedal to comes to its initial
position after the vacuum circuit breaker is tripped.
[0035] FIG. 1 illustrates exemplary representation of a secondary tripping
assembly, in accordance with an embodiment of the present disclosure.
[0036] FIG. 2 illustrates exemplary representation of a resetting assembly
of the secondary tripping assembly, in accordance with an embodiment of the
present disclosure.
[0037] FIG. 3 illustrates exemplary representation of a magnetic tripping
coil, in accordance with an embodiment of the present disclosure.
[0038] FIG. 4 illustrates exemplary representation the secondary tripping
coil inside a switchgear, in accordance with an embodiment of the present
disclosure.
[0039] As illustrated, a secondary tripping assembly 100 can include a
magnetic tripping coil 102 that can be operatively coupled with a vacuum circuit
breaker. The magnetic tripping coils 102 can include a movable part 104 that can
be configured to extend in a first direction to trip the vacuum circuit breaker in
case of any fault in operation of the switchgear 120. A reset mechanism 106 can
be operatively configured with the magnetic tripping coil 102 to facilitate
resetting of the magnetic tripping coil 102 after the magnetic tripping coil trips the
vacuum circuit breaker. The reset mechanism 106 can include a bracket 108
having an arm 110 pivotally configured, from centre of the arm 110. The bracket
108 can be a c-type bracket
[0040] In an embodiment, the arm 110 can be configured with the bracket
108 such the when a first end 110-1 of the moved in the first direction. A second
end 110-2 of the arm 110 can move in a second direction opposite to the first
direction, and when the first end of the moved in the second direction, the second
end of the arm moves in the first direction. The resetting assembly 106 includes a

vertical member 112 that can include a third end 112-1 coupled with the second end 110-2 of the arm through an arrangement 114 such that the vertical member 112 and the second end 110-2 can be configured to move in the same direction of the first direction and the second direction.
[0041] In an embodiment, a fourth end 112-2 of the vertical member 112
can be coupled with a cam shaft 116 of the vacuum circuit breaker. The movable part 104 can trip the vacuum circuit breaker and simultaneously the cam shaft 116 can be rotated by a pre-determined rotation angle that can further cause the vertical member 112 to move in the first direction facilitating the movement of the first end 110-1 in the second direction for resetting the magnetic coil 102 by pushing the movable part along the second direction. The magnetic tripping coil 102 can be positioned on a second side of the bracket 108 corresponding to the first end 110-1 such that the movement of the first end 110-1 in the second direction pushes the movable part in the second direction.
[0042] In an embodiment, the arrangement 114 can include a combination
of a spring and a bolt. The magnetic tripping coil 102 can be configured to rotate a
tripping shaft 118 of the vacuum circuit breaker to open electrical contacts of the
vacuum circuit breaker to perform tripping of the vacuum circuit breaker. The
movement of the movable part 104 in the first direction can be configured to push
a trip pedal, coupled with the tripping shaft, in the first direction for facilitating
the rotation of the tripping shaft 118. The tripping pedal can be positioned under
the magnetic tripping coil 102. The movement of the movable part 102 in the
second direction, through the first end 110-1, can allow the trip pedal to come to
its initial position after the vacuum circuit breaker is tripped.
[0043] 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.
[0044] 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
[0045] The proposed invention provides a secondary tripping assembly
that does not require any resetting system for resetting the secondary tripping
assembly.
[0046] The proposed invention provides a secondary tripping assembly
that is easy to use.
[0047] The proposed invention provides a cost-effective secondary
tripping assembly for the switchgear.
[0048] The proposed invention provides a secondary tripping assembly for
the switchgear which requires less maintenance cost.

A secondary tripping assembly for a vacuum circuit breaker in a switchgear, the secondary tripping assembly comprising:
a magnetic tripping coil operatively coupled with the vacuum circuit breaker, and the magnetic tripping coils comprises a movable part configured to extend in a first direction to trip the vacuum circuit breaker in case of any fault in operation of the switchgear;
a reset mechanism operatively configured with the magnetic tripping coil to facilitate resetting of the magnetic tripping coil after the magnetic tripping coils trips the vacuum circuit breaker, the reset mechanism comprises:
a bracket having an arm pivotally configured, from centre of the arm, with the bracket such the when a first end of the arm moved in the first direction, a second end of the arm moves in a second direction opposite to the first direction, and when the first end of the arm moved in the second direction, the second end of the arm moves in the first direction, and a vertical member comprising:
a third end coupled with the second end of the arm through an arrangement such that the vertical member and the second end are configured to move in the same direction of the first direction and the second direction, and a fourth end coupled with a cam shaft of the vacuum circuit breaker, wherein the movable part trips the vacuum circuit breaker simultaneously the cam shaft is rotated by a pre-determined rotation angle causing the vertical member to move in the first direction facilitating the movement of the first end in the second direction for resetting the magnetic coil by pushing the movable part along the second direction.

2. The secondary tripping assembly as claimed in claim 1, wherein the bracket is C-type bracket and the arm is positioned at a first side of the bracket.
3. The secondary tripping assembly as claimed in claim 1, wherein the magnetic tripping coil is positioned on a second side of the bracket corresponding to the first end of the arm such that the movement of the first end in the second direction pushes the movable part in the second direction.
4. The secondary tripping assembly as claimed in claim 1, wherein the arrangement comprised a combination of a spring and a bolt.
5. The secondary tripping assembly as claimed in claim 1, wherein the magnetic tripping coil is configured to rotate a tripping shaft of the vacuum circuit breaker to open electrical contacts of the vacuum circuit breaker to perform tripping of the vacuum circuit breaker.
6. The secondary tripping assembly as claimed in claim 6, wherein the movement of the movable part in the first direction is configured to push a trip pedal, coupled with the tripping shaft, in the first direction for facilitating the rotation of the tripping shaft.
7. The secondary tripping assembly as claimed in claim 1, wherein the movement of the movable part in the second direction, through the first end, allows the trip pedal to come to its initial position after the vacuum circuit breaker is tripped.