FORM 2
The Patents Act 1970
(39 of 1970)
&
The Patent Rules 2003
COMPLETE SPECIFICATION
(See Section 10 and rule 13)
TITLE OF TftE INVENTION:
VERTICAL BUSBAR SUPPORT ASSEMBLY
APPLICANT:
LARSEN & TOUBRO LIMITED
L&T House, Ballard Estate, P.O. Box No. 278,
Mumbai, 400 001, Maharashtra
INDIA.
PREAMBLE OF THE DESCRIPTION:
THE FOLLOWING SPECIFICATION PARTICULARLY DESCRIBES THE INVENTION AND THE MANNER IN WHICH IT IS TO BE PERFORMED

A) TECHNICAL FIELD
[0001] The present invention generally relates to electrical power distribution panel
board and particularly to electrical switchboards and more particularly to electrical bus-bars.
B) BACKGROUND OF THE INVENTION
[0002] In electrical power distribution, a bus bar is a thick strip of metal that conducts electricity within a switchboard, distribution board, substation or other electrical apparatus. Bus bars are used within installations for distributing electrical power from a supply point to a number of output circuits. They may be used in a variety of configurations ranging from vertical risers, carrying current to each floor of a multi-storey building, to bars used entirely within a distribution panel.
[0003] Bus bars for the horizontal assembly are known, which have at least one terminal bar arranged on an insulating enclosure that is at least partially open on one side, on one side of which several terminal lugs are arranged that protrude from the partially opened side of the insulating enclosure. These bus bars are mounted such that the partially opened side faces upwards and connecting machines can be placed on the bus bar. Also known are bus bars that can be assembled vertically, which have at least one terminal bar

arranged on an insulating enclosure. The bus bar then includes terminal lugs arranged diagonally to the terminal bar and protruding through at least partial opening on the two opposite sides of the bus bar. The machines to be connected can thus be connected to the bus bar from both sides.
[0004] Conventionally, an electrical lead extending from the module has been secured to the bus bar by means of bolts, to connect the circuitry to its bus bar. The disconnection of the module from the bus bar, in order to allow repair work to be carried out on the module, and subsequent connection of the module to the bus bar is therefore time consuming. Furthermore, the threaded connection between the lead and the bus bar is subjected to temperature cycling owing to the heat generated by the module, thus causing the bolt to loosen as a result of differential expansion between the metal of the bolt and that of the bus bar, thereby necessitating periodical readjustment of the bolt.
[0005] Another method previously used in a bus bar panel system, utilizes a quick acting and simplified fastening system for making connections. The bus bar is preferably pre-perforated along the edges, although holes may be drilled at the time of fastening. The fastening system uses a stud having threads on one end for receiving the washers and nut. On the other end, the stud is provided with flats which engage an open slot on a retaining clip. The clip has a gauge flange to engage the edge of the bar or clamp through which the stud extends. If one has to replace the vertical bus bar, than all of the vertical bus bars supports has to be dismantled.

[0006] Therefore, there exists a need to provide a design to enhance the reliability of the bus bar to the short circuit forces is compact and is easy to disassemble a vertical bus bar support.
[0007] The above mentioned shortcomings, disadvantages and problems are addressed herein and which will be understood by reading and studying the following specification.
C) OBJECT OF THE INVENTION
[0008] The primary object of the present invention is to develop a vertical bus bar support assembly.
[0009] Another object of the present invention is to develop a vertical bus bar support assembly for high current density applications.
[0010] Yet another object of the present invention is to develop a vertical bus bar support assembly, flexible enough for mounting and dismantling-
[0011] Yet another object of the present invention is to develop a vertical bus bar support assembly, which removes the need of holes on the vertical bus bars for mounting.

[0012] Yet another object of the present invention is to develop a vertical bus bar
support assembly, which is compact and easy to service.
[0013] These and other objects and advantages of the present invention will become readily apparent from the following detailed description taken in conjunction with the accompanying drawings.
D) SUMMARY OF THE INVENTION
[0014] The above mentioned shortcomings, disadvantages and problems are addressed herein and which will be understood by reading and studying the following specification.
[0015] The various embodiments of the present invention provide a modular vertical
bus bar support assembly for an electrical power distribution panel board. In the present invention, the vertical bus bars are clamped to the horizontal bus bar. The vertical bus bar support includes a male support and a female support made of SMC (Sheet molding compound) material, which are strong enough to receive the thermal and electro-dynamic forces. These male and female supports are mounted on a MS (mild steel) channel which is mounted on the vertical support of the switchboard.

[0016] Further in the design, the assembly of male support and female support on the MS channel is known as dropper support assembly. This dropper assembly is mounted on the vertical bus bar at the MS channel location. The dropper support assembly can also be mounted at various locations on the vertical bus bar. A holding strip is mounted on the dropper support assembly to clamp the male support, the female support and the MS channel on the vertical bus bar. The vertical bus bar support assembly of the present invention provides adequate support to the vertical bus bars and can be mounted at any location on the vertical bus bar, as it does not require any holes on the vertical bus bar for mounting.
[0017] Furthermore the modular vertical bus bar support assembly of the present invention can be easily dismantled by removing the holding strip first and then the dropper assembly. The removal of the dropper assembly from the vertical bus bar makes it easy to replace or repair any of the components of the vertical bus bar support assembly. The modular vertical bus bar support assembly of the embodiment herein is compact, easy to mantle and easy to dismantle.
E) BRIEF DESCRIPTION OF THE DRAWINGS
[0018] The other objects, features and advantages will occur to those skilled in the art from the following description of the preferred embodiment and the accompanying drawings in which:

[0019] FIG.l illustrates the cross-sectional view showing the internal parts of the vertical bus bar support assembly.
[0020] FIG.2A-2C illustrates a schematic front view, top view and back view of the dropper support assembly.
[0021] FIG.3A-3B illustrates a schematic front view and back view of the female support of the vertical bus bar.
[0022] FIG.4A-4B illustrates a schematic front view and a back view of the male support of the vertical bus bar.
[0023] FIG.5A-5C illustrates a perspective front view, side view and top view of the holding strip of the vertical bus bar.
[0024] Although specific features of the present invention are shown in some drawings and not in others. This is done for convenience only as each feature may be combined with any or all of the other features in accordance with the present invention.

F) DETAILED DESCRIPTION OF THE INVENTION
[0025] In the following detailed description, reference is made to the accompanying
drawings that form a part hereof, and in which the specific embodiments that may be practiced is shown by way of illustration. These embodiments are described in sufficient detail to enable those skilled in the art to practice the embodiments and it is to be understood that the logical, mechanical and other changes may be made without departing from the scope of the embodiments. The following detailed description is therefore not to be taken in a limiting sense.
[0026] The various embodiments herein provide a modular vertical bus bar support
assembly for an electrical power distribution panel board. As shown in FIG.l the Mild Steel (MS) channel (2) is mounted on the vertical supports (4) of the switchboard. Here the vertical supports include a plurality of vertical pillars. Vertical Bus Bar (VBB) (1) is then clamped to a horizontal bus bar (11). Holes (5) of the MS channel as shown in FIG. 2 are fixed on the vertical supports (4) through the mounting means at specified locations. The female support (8) of FIG. 3 and the male support (9) of FIG. 4 are inserted on the vertical bus bar (1) at the MS channel (2) location. Further a holding strip (6) of FIG. 5 is mounted over the vertical bus bar (I). Thereafter, a clamping arrangement is provided which clamps the holding strip (6), the female support (8) and the male support (8) on to the MS channel (2). The clamping arrangement is provided such that it engages with the hole of the female support (8) and the hole of the male support (9) to render a firm connection.

[0027] FIG. 2 illustrates the dropper support assembly. The male support (9) and the female support (8) are mounted on the MS channel (2) with the mounting means. The MS channel (2) includes at least a pair of holes (5) at the longitudinal end sections of the MS channel (2) as shown in FIG. 2A for fastening the dropper assembly on the vertical support (4) of the switchboards as shown in FIG. 1. FIG. 2B illustrates the top view of the dropper support assembly showing the arrangement of male support (9) and the female supports (8) on the MS channel (2). FIG. 2C illustrates the side view of the dropper support showing the MS channel (2) and the male support (9). FIG. 2D illustrates a perspective back view of the dropper support. The FIG. 2D shows the arrangement of the male support (9) and the female support (8) on the MS channel (2).
[0028] FIG. 3 illustrates the female support (8) of the vertical bus bar support assembly. As shown in FIG. 3A, holes (10) are provided on the female support (8) for inserting the female support on the vertical bus bar (1) at the MS channel (2) location as shown in FIG. 2. Clamps (12) are provided on the back side of the each support as shown in FIG. 3B for clamping the female support (8) on the vertical bus bar (1).
[0029] FIG. 4 illustrates the male support (9) of the vertical bus bar support assembly. As shown in FIG. 4A, holes (10) are provided on the male support (9) for inserting the male support on vertical bus bar (1) at the MS channels (2) location as shown in FIG. 2. The clamps (12) provided on the back side of each male support as shown in FIG. 4B allows for

clamping the male support (9) on the vertical bus bar (1). The supports of FIG. 3 and FIG. 4 are made of sheet molding compound (SMC) material and are strong enough to take the thermal and electro-dynamic forces.
[0030] The holding strip (6) as shown in FIG. 5 is provided for holding the bus bar support components on the vertical bus bar (1) as shown in FIG. 1. Ribs (7) as shown in top view and perspective of FIG. 5B-5C are provided on the back side of the holding strip (6) to hold the components firmly. The holes (13) as shown in FIG. 5A-5B are provided at the longitudinal end sections of the holding strip (6) to fix male support (9), female support (8) and the MS channel (2) firmly on the vertical bus bar (1) as shown in FIG. 1 and the ribs (7) helps to avoid the horizontal movement of the components.
[0031] The embodiment herein allows replacing or repairing a single support without dismantling the other structure. The fasteners of the holding strip can be disengaged to remove the holding strip which makes it easy to repair or replace the vertical bus bar. The vertical bus bar support assembly of the present invention will provide good support strength and can be mounted at any location of the vertical bus bar as it doesn't required any holes for mounting.
[0032] It is also to be understood that the following claims are intended to cover all of the generic and specific features of the present invention described herein and all the

statements of the scope of the invention which as a matter of language might be said to fall there between.
G) ADVANTAGES OF THE INVENTION
[0033] Thus the various embodiments of the present invention provide a modular vertical bus bar support assembly for electrical power distribution in switchboard.
[0034] The vertical bus bar support assembly of the present invention is compact, easy in servicing and assembling.
[0035] The vertical bus bar support assembly of the present invention can be easily
assembled with dropper support, as it doesn't require any holes on the vertical bus bar for mounting.
[0036] The vertical bus bar support assembly of the present invention is strong enough to take short circuit forces.
[0037] The vertical bus bar support assembly of the present invention allows,
removing or repairing damaged part from the support assembly without dismantling the
other structure.

CLAIMS
What is claimed is:
1. A vertical bus bar support assembly comprising:
A metal channel;
A vertical support bar;
A plurality of vertical bus bars;
A horizontal bus bar;
A dropper support; and
A holding strip having at least one hole on each end section;
Wherein the holding strip is mounted on the dropper support which in turn is clamped to
the metal channel such that the holding strip provides a support to the vertical bus bar.
2. A vertical bus bar support assembly in accordance with claim 1, further comprising a mounting means to mount the metal channel on the vertical support bar.
3. A vertical bus bar support assembly in accordance with claim 1, further comprising a clamping means to clamp the vertical bus bar on the horizontal bus bar.
4. A vertical bus bar supports assembly in accordance with claim 1, wherein the dropper supports comprising:

- A male support with a hole; and
- A female support with a hole.

5. A vertical bus bar support assembly in accordance with claim 1, wherein the clamping means engages with the hole at each end section of the holding strip, the male support hole and the female support hole to clamp the holding strip to the metal channel.
6. A vertical bus bar support assembly in accordance with claim 1, wherein the metal channel is a mild steel channel.

7. A vertical bus bar support assembly in accordance with claim 1, wherein the vertical support bar is a vertical pillar.
8. A vertical bus bar support assembly in accordance with claim 1, wherein the holding strip is disengaged from the metal channel to remove at least one vertical bus bar.