The present disclosure relates to the field of electrical busbar systems. More particularly, it relates to a shared dropper arrangement in a doubledeck interleaved busbar system.
BACKGROUND
[0002] Background description includes information that may be useful in understanding the present disclosure. It is not an admission that any of the information provided herein is prior art or relevant to the presently claimed disclosure, or that any publication specifically or implicitly referenced is prior art. [0003] In a Low voltage Switchboard, power distribution circuit is divided into two parts: Power Control Centre (PCC) in the upstream side and Motor Control Centre (MCC) in the downstream side. Power Control Centre (PCC) distributes the power to different Motor Control Centre and Motor Control Centre distributes that power to different motor loads, lamp loads using feeders/modules. Motor Control Centre panel consists of Horizontal busbar, distribution feeders or modules, vertical busbar or Dropper and a supporting system for vertical busbar. [0004] In MCC panel busbar system there are two types of busbar system: Double deck interleaved busbar system (DDIL system) and Double deck non interleaved busbar system (DDNIL system). In DDNIL system, panel depth is lesser compared to panel depth of DDIL system. In case of MCC with DDNIL system, vertical droppers are placed on front side of panel. So this system requires additional dropper chamber for accommodating vertical droppers apart from the chambers required for accommodating distribution feeders. Due to space limitation, it is not possible to increase current rating of vertical droppers neither by increasing nos. of conductor nor by increasing width of conductors. Various attempts have been made in the art to overcome the problems associated with MCC panel busbar systems.
[0005] US patent No. US4307304 talks about an electrical distribution switchboard including a multiphase horizontal main bus and a multiphase vertical riser bus. The vertical riser bus is connected to the main horizontal bus at its

geometric and electrical center. Various distribution feeders are located above and below the main bus to distribute power to different type of loads. [0006] US patent No US5515236 discloses about the connector in the form of a single metal casting configured to connect the main circuit breaker with the control center internal electrical distribution conductors without requiring additional connectors.
[0007] US patent No US 9337629 discloses about a motor control center with compact dual feeders positioned in a unit housing to be offset from one another in a front to back direction to provide a compact configuration for a MCC cabinet. The dual starters or feeders can communicate with a respective external handle attached to an inwardly oriented shaft. The handles can be rotary handles that connect to a respective gear assembly that transforms rotational input to linear input.
[0008] So MCC with DDNIL system cannot be offered with more nos. of
distribution feeders. Also there will be difficulty in access while connecting linkwork of distribution feeder with vertical droppers. With high current rating (5000A) of horizontal busbar with double deck interleaved busbar system, it should be possible to accommodate more nos. of distribution feeders or modules in Motor Control Centre. This can be made possible by provision of shared dropper arrangement in MCC panel.
OBJECTS OF THE PRESENT DISCLOSURE
[0009] Some of the objects of the present disclosure, which at least one
embodiment herein satisfies are as listed herein below.
[0010] It is an object of the present disclosure to provide a system to
Eliminate widthwise chamber required for accommodating droppers thereby
reducing the width of the transport unit assembly.
[0011] It is yet another object of the present invention to make a provision for
increasing the current rating of vertical dropper which enhances current rating of
distribution feeders in MCC panel.

[0012] It is yet another object of the present invention to provide a provision
for connecting distribution feeders on both side of vertical dropper which
increases the provision of higher number of distribution feeders in MCC panel.
[0013] It is yet another object of the present disclosure to provide a single
dropper arrangement for both columns of distribution feeders in MCC panel.
[0014] It is yet another object of the present disclosure to provide a common
dropper arrangement to feed power to both vertical columns of MCC.
[0015] It is yet another object of the present disclosure to eliminate cost of
separate dropper arrangement and its supporting arrangement.
[0016] It is yet another object of the present invention to provide ease of
assembly during connection of distribution feeders with vertical droppers.
[0017] It is yet another object of the present invention to provide a MCC
panel that has detachable components which can be re-attached with ease.
[0018] It is yet another object of the present invention to provide for ease of
access during maintenance and tightening of linkwork of distribution feeders with
vertical droppers.
SUMMARY
[0019] The present disclosure relates to the field of electrical busbar systems. More particularly, it relates to a shared dropper arrangement in a doubledeck interleaved busbar system.
[0020] The present Invention shows a Shared dropper arrangement in an exemplary 5000A Double deck interleaved busbar system in MCC to distribute the power to different motor loads, lamp loads using feeders/modules. With this arrangement more nos. of distribution feeders or modules can be accommodated in Motor Control Centre. Widthwise dropper chamber required for accommodating droppers is not required with this arrangement, so overall width of the transport unit assembly is reduced. As the droppers are on rear side of feeders, so there is Provision for increasing the current rating of vertical dropper which enhances current rating of distribution feeders in MCC panel, there is a provision for connecting distribution feeders on both side of vertical dropper

which increases the provision of higher number of distribution feeders in MCC panel. No separate dropper arrangement is required for each column of distribution feeders in MCC panel, a common dropper arrangement can feed power to both vertical columns of MCC, and so cost of separate dropper arrangement and its supporting arrangement is eliminated. Assembly time during connection of distribution feeders with vertical droppers is also reduced. [0021] An aspect of the present disclosure relates to a double deck interleaved busbar system comprised of a panel having a plurality of parallel busbars adapted in a busbar compartment to deliver a current to at least one horizontal busbar and at least one vertical busbar, said parallel busbars running throughout a length of said panel, wherein vertical droppers connected to said parallel busbars deliver a current to the at least one horizontal busbar and the at least one vertical busbar in the panel.
[0022] In an aspect, the double deck interleaved busbar system comprises the panel that comprises a top frame assembly to cover said panel, a bottom frame assembly forming base of said panel, one or more corner vertical pillars mounted on each corner of said bottom frame assembly, said corner vertical pillars coupled by one or more middle channels to form a resting base for one or more mid-vertical pillars.
[0023] In an aspect, the double deck interleaved busbar system, wherein the top frame assembly comprises at least one hood for ventilating said panel. [0024] In yet another aspect, the double deck interleaved busbar system, wherein the busbars are supported by vertical supporting arrangements. [0025] In yet another aspect, the double deck interleaved busbar system, wherein the vertical droppers, supported by vertical supporting arrangements connect to the at least one horizontal busbar and the at least one vertical busbar. [0026] In yet another aspect, the double deck interleaved busbar system, wherein the vertical droppers are provided with one or more distribution feeders on either side of the vertical dropper.
[0027] In yet another aspect, the double deck interleaved busbar system, wherein the vertical droppers are placed behind inner vertical pillar front.

[0028] In yet another aspect, the double deck interleaved busbar system, wherein the top frame assembly, the bottom frame assembly forming base of the panel, the corner vertical pillars, the middle channels, the mid-vertical pillars and the supporting arrangements are detachable.
BRIEF DESCRIPTION OF THE ACCOMPANYING DRAWINGS
[0029] 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.
[0030] The diagrams described herein are for illustration only, which thus are
not limitations of the present disclosure, and wherein:
[0031] FIG. 1 illustrates a perspective view of an exemplary structure for
MCC panel in accordance with the block diagram of the proposed system.
[0032] FIG. 2 illustrates a configuration of Main Horizontal busbars and
Vertical busbars arrangement in Shared dropper MCC in an exemplary
embodiment of the present invention.
[0033] FIG. 3 illustrates a left side view of an MCC panel with Shared
dropper arrangement built in accordance with an embodiment of the present
invention.
[0034] FIG. 4 illustrates a top view of an MCC panel with Shared dropper
arrangement built in accordance with an embodiment of the present invention.
DETAILED DESCRIPTION
[0035] 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. 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 spirit and scope of the present disclosure as defined by the appended claims. [0036] If the specification states a component or feature "may", "can", "could", or "might" be included or have a characteristic, that particular component or feature is not required to be included or have the characteristic. [0037] As used in the description herein and throughout the claims that follow, the meaning of "a," "an," and "the" includes plural reference unless the context clearly dictates otherwise. Also, as used in the description herein, the meaning of "in" includes "in" and "on" unless the context clearly dictates otherwise.
[0038] While embodiments of the present invention have been illustrated and described in the accompanying drawings, the embodiments are offered only in as much detail as to clearly communicate the disclosure and are not intended to limit the numerous equivalents, changes, variations, substitutions and modifications falling within the spirit and scope of the present disclosure as defined by the appended claims.
[0039] Groupings of alternative elements or embodiments of the invention disclosed herein are not to be construed as limitations. Each group member can be referred to and claimed individually or in any combination with other members of the group or other elements found herein. One or more members of a group can be included in, or deleted from, a group for reasons of convenience and/or patentability. When any such inclusion or deletion occurs, the specification is herein deemed to contain the group as modified thus fulfilling the written description of all groups used in the appended claims.
[0040] Each of the appended claims defines a separate invention, which for infringement purposes is recognized as including equivalents to the various elements or limitations specified in the claims. Depending on the context, all references below to the "invention" may in some cases refer to certain specific embodiments only. In other cases it will be recognized that references to the

"invention" will refer to subject matter recited in one or more, but not necessarily all, of the claims. The following is a detailed description of embodiments of the invention disclosed herein. The embodiments are in such details as to clearly communicate the invention. However, the amount of details 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 spirit and scope of the present invention.
[0041] Unless the context requires otherwise, throughout the specification which follow, the word "comprise" and variations thereof, such as, "includes" and "comprising" are to be construed in an open, inclusive sense that is as "including, but not limited to."
[0042] Reference throughout this specification to "an exemplary embodiment", "one embodiment" or "an embodiment" means that a particular feature, structure or characteristic described in connection with the embodiment is included in at least one embodiment. Thus, the appearances of the phrases "in exemplary embodiment", "in one embodiment" or "in an embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. [0043] Reference will now be made in detail to the exemplary embodiments of the present invention, examples of which are illustrated in the accompanying drawings. Wherever possible, the same reference numbers are used in the drawings and the description to refer to the same or like parts. Exemplary embodiments will now be described more fully hereinafter with reference to the accompanying drawings, in which exemplary embodiments are shown. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. These embodiments are provided so that this disclosure will be thorough and complete and will fully convey the scope of the invention to those of ordinary skill in the art. Moreover, all statements herein reciting embodiments of the invention, as well as specific examples thereof, are intended to encompass both structural and functional

equivalents thereof. Additionally, it is intended that such equivalents include both currently known equivalents as well as equivalents developed in the future (i.e., any elements developed that perform the same function, regardless of structure). [0044] The following discussion provides many example embodiments of the inventive subject matter. Although each embodiment represents a single combination of inventive elements, the inventive subject matter is considered to include all possible combinations of the disclosed elements. Thus, if one embodiment includes elements A, B, and C, and a second embodiment includes elements B and D, then the inventive subject matter is also considered to include other remaining combinations of A, B, C, or D, even if not explicitly disclosed. [0045] Various terms as used herein are shown below. To the extent a term used in a claim is not defined below, it should be given the broadest definition persons in the pertinent art have given that term as reflected in printed publications and issued patents at the time of filing.
[0046] In an embodiment, a double deck interleaved busbar system (100) is disclosed, said system comprised of a panel having a plurality of parallel busbars (122) adapted in a busbar compartment to deliver a current to at least one horizontal busbar and at least one vertical busbar, said parallel busbars running throughout a length of said panel; wherein vertical droppers (202) connected to said parallel busbars (122) deliver a current to the at least one horizontal busbar and the at least one vertical busbar in the panel.
[0047] In an embodiment, in the double deck interleaved busbar system, the panel comprises a top frame assembly (102) to cover said panel, a bottom frame assembly (112) forming base of said panel, one or more corner vertical pillars (106) mounted on each corner of said bottom frame assembly (112), said corner vertical pillars (106) coupled by one or more middle channels (104) to form a resting base for one or more mid-vertical pillars (110).
[0048] In an embodiment, the double deck interleaved busbar system comprises a top frame assembly (102) that comprises at least one hood (124) for ventilating said panel.

[0049] In an embodiment, the double deck interleaved busbar system
comprises busbars (122) which are supported by vertical supporting
arrangements (208).
[0050] In an embodiment, the double deck interleaved busbar system the comprises vertical droppers (202) which are supported by vertical supporting arrangements (204).
[0051] In an embodiment, the double deck interleaved busbar system, comprises vertical droppers (202) that are provided with one or more distribution feeders on either side of said vertical dropper.
[0052] In an embodiment, the double deck interleaved busbar system comprises vertical droppers (202) placed behind inner vertical pillar front (126). [0053] In an embodiment, the double deck interleaved busbar system comprises the top frame assembly (102), the bottom frame assembly (112) forming base of said panel, the corner vertical pillars (106), the middle channels (104), the mid-vertical pillars (110) and the supporting arrangements (204, 208) that are detachable.
[0054] The MCC panel with shared dropper arrangement can consist of a Top Frame assembly (102), a plurality of Middle channels (104), a Corner vertical pillar (106), a feeder base plate (108), a Mid-vertical pillar (110), a Bottom Frame assembly (112), a Feeder barrier (114), a Feeder tray (116), one or more Vertical Droppers (202), an Incoming link (118), a Link support (402), one or more Outgoing links (120), a Plain Door (130), one or more Horizontal busbars (122), Hoods(124), Supporting arrangement for vertical droppers (204) , Supporting arrangement for Horizontal busbars (208), Inner vertical pillar front (126) and Inner vertical pillar rear (128).
[0055] The embodiment with reference to FIG. 1 depicts a perspective view of panel structure for MCC that includes a bottom frame assembly (112) which forms the base of the MCC panel. On it mounted are the corner vertical pillar (106), these are coupled by Middle channels (104), to form a base on which the Mid-vertical pillar (110) is fixed. The mid-vertical pillars (110) have hexagonal holes punched to facilitate front access for mounting feeder base plate. On this

said arrangement top frame assembly (102) is mounted which thereby forms the complete set of MCC panel structure. A Hoods assembly is is fixed on to top frame assembly (102) that enable panel ventilation.
[0056] With reference to the embodiment shown in FIG. 2, the Main Horizontal busbars and vertical busbars in shared dropper MCC panel are shown. The Horizontal Busbar (Busbar that runs throughout the length of the panel which consists of one or more bars placed in parallel planes and are responsible for carrying and delivering the required current to the individual circuits) are placed in busbar compartment of MCC and these busbars are supported by supporting arrangement (208). Vertical droppers (202) are connected to these busbars and these busbars are supported by supporting arrangement.
[0057] With reference to the embodiment shown in FIG. 3 shows a Left side view of a preferred embodiment of the MCC panel with shared dropper arrangement in accordance with the present disclosure. The vertical Droppers (202) are placed on behind inner vertical pillar front (126) so no separate chamber is required for accommodating vertical droppers (202).
[0058] With reference to the embodiment shown in FIG. 4 shows a top view of a preferred embodiment of the MCC panel with shared dropper arrangement in accordance with the present disclosure. The vertical Droppers (202) are placed on behind inner vertical pillar front (126) so no separate chamber is required for accommodating vertical droppers (202). Distribution feeders can be placed on both sides of the vertical droppers (202).
[0059] As used herein, and unless the context dictates otherwise, the term "coupled to" is intended to include both direct coupling (in which two elements that are coupled to each other contact each other) and indirect coupling (in which at least one additional element is located between the two elements). Therefore, the terms "coupled to" and "coupled with" are used synonymously. Within the context of this document terms "coupled to" and "coupled with" are also used euphemistically to mean "communicatively coupled with" over a network, where two or more devices are able to exchange data with each other over the network, possibly via one or more intermediary device.

[0060] The terms, descriptions and figures used herein are set forth by way of illustration only. Many variations are possible within the spirit and scope of the subject matter, which is intended to be defined by the following claims and their equivalents in which all terms are meant in their broadest reasonable sense unless otherwise indicated.
[0061] 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
[0062] The present disclosure provides for a system with the vertical
droppers on a rear sides of the panel.
[0063] The present disclosure provides for a system wherein as the vertical
droppers are on rear side of panel, there is ease of access during tightening of
linkwork of distribution feeders with vertical droppers.
[0064] The present disclosure provides for a system that allows reduction in
overall length of transfer unit (TU) as no separate panel structure is required to
accommodate vertical busbars.
[0065] The present disclosure provides for a system wherein Cross section of
vertical busbar can be increased so distribution feeders with higher current rating
can be provided.
[0066] The present disclosure provides for a system that allows for higher
rated distribution feeders to be provided in a MCC panel.
[0067] The present disclosure provides for a system that allows a provision
for more numbers of distribution feeders with Shared dropper arrangement.

[0068] The present disclosure provides for a system that allows Cost
reduction of separate dropper arrangement and its supporting arrangement for a
MCC panel.
[0069] The system as per the present disclosure allows Reduction in
assembly time due to ease of access so there is simplicity in installation.
[0070] The system as per the present disclosure allows the Elimination of
widthwise chamber required for accommodating droppers thereby reducing the
width of the transport unit assembly.
[0071] The system as per the present disclosure allows for increasing the
current rating of vertical dropper which enhances current rating of distribution
feeders in MCC panel.
[0072] The system as per the present disclosure allows for connecting
distribution feeders on both side of vertical dropper which increases the provision
of higher number of distribution feeders in MCC panel.
[0073] The system as per the present disclosure allows use of a common
dropper arrangement can feed power to both vertical columns of MCC, so cost of
separate dropper arrangement and its supporting arrangement is eliminated.
[0074] The system as per the present disclosure enables ease of assembly
during connection of distribution feeders with vertical droppers

We Claim:

1. A double deck interleaved busbar system (100), said system comprised of:
a panel having a plurality of parallel busbars (122) adapted in a busbar compartment to deliver a current to a distribution feeder, at least one horizontal busbar and at least one vertical busbar, said parallel busbars running throughout a length of said panel;
wherein vertical droppers (202) connected to said parallel busbars (122) deliver a current to the at least one horizontal busbar and the at least one vertical busbar in the panel.
2. The double deck interleaved busbar system as claimed in claim 1, wherein the panel comprises a top frame assembly (102) to cover said panel, a bottom frame assembly (112) forming base of said panel, one or more corner vertical pillars (106) mounted on each corner of said bottom frame assembly (112), said corner vertical pillars (106) coupled by one or more middle channels (104) to form a resting base for one or more mid-vertical pillars (110).
3. The double deck interleaved busbar system as claimed in claim 1, wherein the top frame assembly (102) comprises at least one hood (124) for ventilating said panel.
4. The double deck interleaved busbar system as claimed in claim 1, wherein the busbars (122) are supported by vertical supporting arrangements (208).
5. The double deck interleaved busbar system as claimed in claim 1, wherein the vertical droppers (202), supported by vertical supporting arrangements (204) connect to the at least one horizontal busbar and the at least one vertical busbar.
6. The double deck interleaved busbar system as claimed in claim 1, wherein the vertical droppers (202) are provided with one or more distribution feeders on either side of said vertical dropper.

7. The double deck interleaved busbar system as claimed in claim 1, wherein the vertical droppers (202) are placed behind inner vertical pillar front (126).
8. The double deck interleaved busbar system as claimed in claim 1, wherein the top frame assembly (102), the bottom frame assembly (112) forming base of said panel, the corner vertical pillars (106), the middle channels (104), the mid-vertical pillars (110) and the supporting arrangements (204, 208) are detachable.