Claims: WE CLAIM:
1. A structural framework assembly for a feeder pillar unit comprising:

a pair of elongated structural support members, wherein said structural members include rear vertical pillar (3), corner vertical pillar (5) and mid vertical pillar (8) all substantially parallel to each other and located at predetermined proximity, a plurality feeder base plates (6) being provided to engage the mid vertical pillars so as to provide appropriate structural framework;

a plurality of elongated insulating mounting blocks (19), each having a front surface and a back surface, wherein one end of each mounting block is supported thereof on a support member (25) and the other end is supported thereof on the other end of said support members (25), said mounting blocks being mounted in spaced relation depth wise of said support members;

a plurality of power supply droppers (13) extending perpendicular to and between said support members (25), said power supply droppers (13) operably connected to at least some of said insulating mounting blocks (19),
wherein the insulating mounting blocks (19) include integral formations at said back surface thereof positioning said power supply droppers against movement in a direction transverse to their length.

2. The framework assembly as claimed in claim 1, wherein horizontal bus bars are eliminated.

3. The framework assembly as claimed in claim 1, wherein feeder barrier means (11) extending between said structural support members (25) in the space between adjacent ones of said mounting blocks and shielding the power supply droppers (13) from accidental contact from the front of said feeder pillar unit when control devices are removed.

4. The framework assembly as claimed in claim 3, wherein the framework assembly further comprises insulating barrier means feeder link support (15) extending between side walls behind the power supply droppers (13) and having openings therein through which conducting bars incoming feeder link (14) project and providing a barrier between exposed end portions and said power supply droppers.

Dated this 31st day of March 2018

Abhishek Sen
Of S. MAJUMDAR & CO.
(Applicant’s Agent)

, Description:FIELD OF INVENTION
The present invention pertains to the field of power distribution equipment in general, and, more particularly, to a feeder pillar with separate line and load blocks.

BACKGROUND

A feeder pillar includes main power supply busbars to which the line connections of the control devices are connected and the load or output terminals connected to outgoing conductors or to other devices within the feeder pillar, such load terminal connections being accessible only from the back of the feeder pillar. Since numerous incoming and outgoing conductors are required and since all connections are made from the rear, several basic problems are presented. These problems include minimizing the danger involved in installation and connection of such feeder pillar, providing adequate electrical clearance between conductors of different polarity or voltage, providing adequate physical support for the conductors, including bracing against high magnetic forces created by a possible short-circuit condition, and facilitating the installation and replacement of electrical control devices.
Since switchboards of the type referred to are commonly used to accommodate a large variety of control devices, a primary technical problem is to provide the required versatility in the switchboard for accepting devices of different sizes and ratings without the necessity of providing specially formed conductors, special drilling, and so forth, to accommodate such different devices. Therefore, switchboards are ordinarily required to accept devices ranging in size from a given large size which occupies the full width of a given switchboard section to smaller devices of less than half the width of such a switchboard section which may be conveniently mounted in side by side relation rather than in vertically aligned relation.
Reference has been made to US5067043, relating to an electric power distribution panel board-switchboard bus bar insulation shield. The combination panel board-switchboard housing accepts plug-on connection with a plurality of electric switch-circuit breaker modules. Circuit breakers can also be directly connected into the bus bars in a plug-on connection with minor modification. The bus bars are “edge-mounted” such that the minor dimension of the bus bars is perpendicular to the bottom of the housing to receive the modules as well as the circuit breakers, parse. Plastic or fiber insulation shields are arranged over those bus bars that are not connected with the circuit breakers or modules to prevent inadvertent contact with the bus bars when energized. It further discloses the profile of the power supply bus bars aiding in the ease of mounting the feeders and use of plastics to shield it.
Yet another reference has been made to US4366528 disclosing a switchboard housing apparatus where the lower extremities of two structural, component-carrying columns are affixed to two channel members that are coupled to a base frame. The columns, members, and frame form a free standing assembly. Two other channel members, coupled to a top frame, are affixed to the columns’ upper extremities. Corner posts couple the top and bottom frames. A bus bar is supported within frames and corner posts by an insulated elongated steel member having a through bolt hole. Two insulating washers seat within the hole at opposite sides thereof. A metal bolt fits within the washers and hole. A nut engages with the bolt. A flat washer fits between the bolt and one washer. A plurality of bus bars carries and distribute current at a particular voltage at a first phase. A similar plurality carries and distribute current at other phases. All bus bars are oriented parallel to one another spaced internal cent: first phase, second phase, third phase, first phase, second phase, etc. A distribution bus bar having a uniform cross-section in planes containing width and height rectangular coordinates are formed with a groove along two opposite sides thereof extending along its substantially greater length. Each groove can retain a carriage bolt that can be slid there along. Two remaining opposing sides of the distribution bus bar are formed with longitudinally extending crevices, and intermediate and side longitudinal ridges, that provide for rigidity of the distribution bus bar during short circuit, a convenient extrusion shape for manufacture, and efficient heat sink.

Thus there is a need for a feeder pillar with separate line and load block for easy removal of power supply bus bars and for ingress protection from dust.

SUMMARY OF THE INVENTION
The following presents a simplified summary of the invention in order to provide a basic understanding of some aspects of the invention. This summary is not an extensive overview of the present invention. It is not intended to identify the key/critical elements of the invention or to delineate the scope of the invention. Its sole purpose is to present some concept of the invention in a simplified form as a prelude to a more detailed description of the invention presented later.
An object of the present invention is to provide a structural framework assembly for a feeder pillar unit.
An object of the present invention is to provide a structural framework assembly for a feeder pillar unit having separate line and load block.
Yet another object of the invention is to provide a structural framework assembly for a feeder pillar unit for easy removal of power supply bus bars.
Yet another object of the present invention is to provide a structural framework assembly for a feeder pillar unit for ingress protection from dust.
In accordance with an aspect of the present disclosure, is to provide a structural framework assembly for a feeder pillar unit comprising a pair of elongated structural support members, wherein said structural members include rear vertical pillar, corner vertical pillar and mid vertical pillar all substantially parallel to each other and located at predetermined proximity, a plurality feeder base plates being provided to engage the mid vertical pillars so as to provide appropriate structural framework;

a plurality of elongated insulating mounting blocks, each having a front surface and a back surface, wherein one end of each mounting block is supported thereof on a support member and the other end is supported
thereof on the other end of said support members, said mounting blocks being mounted in spaced relation depth wise of said support members;

a plurality of power supply droppers extending perpendicular to and between said support members, said power supply droppers operably connected to at least some of said insulating mounting blocks,
wherein the insulating mounting blocks include integral formations at said back surface thereof positioning said power supply droppers against movement in a direction transverse to their length.

Other aspects, advantages, and salient features of the invention will become apparent to those skilled in the art from the following detailed description, which, taken in conjunction with the annexed drawings, discloses exemplary embodiments of the invention.

BRIEF DESCRIPTION OF THE ACCOMPANYING DRAWINGS
The above and other aspects, features and advantages of the embodiments of the present disclosure will be more apparent in the following description taken in conjunction with the accompanying drawings, in which:
Figure 1 illustrates a perspective view of a feeder pillar unit constructed in accordance to the invention.
Figure 2 illustrates a perspective view of a feeder pillar unit with certain portions of block removed constructed in accordance to the invention.
Figure 3 perspective view of a feeder pillar unit in accordance to the invention.
Persons skilled in the art will appreciate that elements in the figures are illustrated for simplicity and clarity and may have not been drawn to scale. For example, the dimensions of some of the elements in the figure may be exaggerated relative to other elements to help to improve understanding of various exemplary embodiments of the present disclosure. Throughout the drawings, it should be noted that like reference numbers are used to depict the same or similar elements, features, and structures.

DETAILED DESCRIPTION
The following description with reference to the accompanying drawings is provided to assist in a comprehensive understanding of various embodiments of the present disclosure as defined by the claims and their equivalents. It includes various specific details to assist in that understanding but these are to be regarded as merely exemplary. Accordingly, those of ordinary skill in the art will recognize that various changes and modifications of the various embodiments described herein can be made without departing from the scope and spirit of the present disclosure. In addition, descriptions of well-known functions and constructions may be omitted for clarity and conciseness.
The terms and words used in the following description and claims are not limited to the bibliographical meanings, but, are merely used by the inventor to enable a clear and consistent understanding of the present disclosure. Accordingly, it should be apparent to those skilled in the art that the following description of various embodiments of the present disclosure is provided for illustration purpose only and not for the purpose of limiting the present disclosure as defined by the appended claims and their equivalents.
It is to be understood that the singular forms "a," "an," and "the" include plural referents unless the context clearly dictates otherwise. Thus, for example, reference to "a component surface" includes reference to one or more of such surfaces.
All terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which various embodiments belong. Further, the meaning of terms or words used in the specification and the claims should not be limited to the literal or commonly employed sense, but should be construed in accordance with the spirit of the disclosure to most properly describe the present disclosure.
The terminology used herein is for the purpose of describing particular various embodiments only and is not intended to be limiting of various embodiments. As used herein, the singular forms "a," "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and/or "comprising" used herein specify the presence of stated features, integers, steps, operations, members, components, and/or groups thereof, but do not preclude the presence or addition of one or more other features, integers, steps, operations, members, components, and/or groups thereof. Also, Expressions such as "at least one of," when preceding a list of elements, modify the entire list of elements and do not modify the individual elements of the list.
The present disclosure will now be described more fully with reference to the accompanying drawings, in which various embodiments of the present disclosure are shown. The present disclosure may, however, be embodied in many different forms and should not be construed as being limited to the various embodiments set forth herein, rather, these various embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the present disclosure. Furthermore, a detailed description of other parts will not be provided not to make the present disclosure unclear. Like reference numerals in the drawings refer to like elements throughout.
The subject invention lies in providing a structural framework assembly for a feeder pillar unit.
According to one implementation of the present invention a structural framework assembly for a feeder pillar unit comprising: a pair of elongated structural support members, wherein said structural members include rear vertical pillar (3), corner vertical pillar (5) and mid vertical pillar (8) all substantially parallel to each other and located at predetermined proximity. A plurality of feeder base plates (6) are provided to engage the mid vertical pillars so as to provide appropriate structural framework. Further plural number of elongated insulating mounting blocks (19), each having a front surface and a back surface are provided in the framework. One end of each mounting block is supported thereof on a support member (25) and the other end is supported thereof on the other end of said support members (25) The mounting blocks are mounted in spaced relation depth wise of said support members. The assembly further comprises a plurality of power supply droppers (13) extending perpendicular to and between said support members (25). The power supply droppers (13) are operably connected to at least some of said insulating mounting blocks (19). The insulating mounting blocks (19) include integral formations at said back surface thereof positioning said power supply droppers against movement in a direction transverse to their length.
a pair of elongated structural support members means rear vertical pillar(3), corner vertical pillar(5) and mid vertical pillar(8) supporting said structural support members i.e. feeder base plate (6) in a substantially parallel spaced relation; a plurality (19) of elongated insulating mounting blocks, each having a front surface and a back surface, wherein one end of the mounting block is supported thereof on one of the said support members (25) and the other end is supported thereof on the other end of said support members (25), said mounting blocks being mounted in spaced relation depth wise of said support members; a plurality of power supply droppers (13) extending perpendicular to and between said support members (25), said power supply droppers (13) operably connected to at least some of said insulating mounting blocks (19), wherein insulating mounting blocks (19) include integral formations at said back surface thereof positioning said power supply droppers against movement in a direction transverse to their length.
In an exemplary implementation of the present invention, the feeder pillar unit comprises of a top frame assembly (1), middle channels (2), at least one rear vertical pillar (3), at least one external flange (4), at least one corner vertical pillar (5), at least one feeder base plate (6), a bottom frame assembly (7), at least one mid-vertical pillar (8), at least one bottom plate (9), an earth bar (10), at least one feeder barrier (11), at least one feeder door (12), plurality of droppers (13), at least one incoming feeder link (14), at least one feeder link support (15), an end cover (16), at least one outgoing feeder link (17), a rear door (18), plurality of insulating blocks (19), at least one lifting hook (20), a logo (21), a canopy (22), an external door(23) and a padlock (24).
In an embodiment of the present invention, referring to figure 1, the structural assembly of the feeder pillar unit comprises a bottom frame assembly (7) which forms the base of the feeder verticals. On this mounted are the at least one corner vertical pillar (5), the at least one mid-vertical pillars (8) and rear vertical pillar (3). The pillars have been adapted to facilitate supporting of blocks of different sizes into it. The mid-vertical pillars (8) adapted to facilitate front access for mounting feeder base plate (6). The top frame assembly (1) is mounted at the top of the feeder pillar unit structure. The structural steel frame work assembly thus formed is divided into five no of verticals. To the internal structure, external flanges (4) are bolted from front end on to the top frame assembly (1) and to the bottom frame assembly (7). The middle channels (2) mechanically coupled to the top frame assembly (1) and the bottom frame assembly (7) facilitates mounting of mid-vertical pillars (8) and provide mechanical strength to the structural assembly.

Referring to figure 2, in an embodiment of the present invention the earth bar (10) is operably mounted on to the mid-vertical pillar (8) in the feeder pillar to ensure that any leakage current from live parts flows harmlessly to the earth. A plurality of rectangular feeder barriers (11) facilitate in segregating the power supply droppers (13) and the distribution feeders into different verticals. Moreover, feeder barriers (11) facilitate in mounting of feeder link support (13) on both ends incoming feeder link (14) and outgoing feeder link (17). These are insulating blocks spaced vertically in accordance with the dimensions of the feeder link work. The power supply dropper (13) as illustrated in figure 2 runs perpendicular to the feeder links (14) which are braced by insulating blocks (19) that are provided at regular intervals for guiding them.
The arrangement of the feeder pillar provides a “dead-front” that is no live conducting parts are exposed when control devices are removed. As well as in a dead-back construction no live connections or bus bars are accessible from rear side. A plurality of rear doors (18) in line with the feeder width gets assimilated in the rear vertical pillar (3) and can be assembled from front, thereby facilitating easy in erection and faster execution of the product.
As illustrated in figure 3, in another embodiment of the present invention the internal framework of the structural framework assembly of the feeder pillar unit has external flanges (4) and corner vertical pillar (5) as illustrated in figure 1 facilitates in erection of external doors (23). The external doors (23) are provided with a padlock (24) and a 3 point-locking system as well as hinges mounted on it are not visible from outside and assist in achieving door opening up to 150 degrees. A canopy (22) with integrated lifting hooks (20) as shown in figure 3 enables in free movement of the feeder pillar at site. Moreover, the canopy (22) aids in mounting of logos (21). The framework thus erected helps in apprehend ingress protection from dust.
Some of the non-limiting advantages of the present invention are:
a) Simplification and reduction of cost of larger current rated assemblies due to standardization of power supply droppers and support system.
b) Multi-tap system enhances its rating to well in excess of the anticipated feeder ratings.
c) Ease of mounting with either the hexagon head bolt with a washer or a carriage bolt together with a large surface.
d) Elimination of horizontal bus bars thereby provision for additional feeder and compacting transport unit assembly size.

Although a structural framework assembly for a feeder pillar unit has been described in language specific to structural features, it is to be understood that the embodiments disclosed in the above section are not necessarily limited to the specific methods or devices described herein. Rather, the specific features are disclosed as examples of implementations of a structural framework assembly for a feeder pillar unit.