FORM 2
THE PATENT ACT 1970
&
The Patents Rules, 2003
COMPLETE SPECIFICATION (See section 10 and rule 13)
1. TITLE OF THE INVENTION:
"Assembly for Transformer Clamping"
2. APPLICANT:
(a) NAME: Larsen & Toubro Limited
(b) NATIONALITY: Indian Company registered under the
provisions of the Companies Act-1956.
(c) ADDRESS: LARSEN & TOUBRO LIMITED,
L&T House, Ballard Estate, P. 0. Box: 278, Mumbai 400 001, India
3. PREAMBLE TO THE DESCRIPTION:
COMPLETE
The following specification particularly describes the invention and the manner in which it is to be performed.

Assembly for Transformer Clamping
Field of the invention
The present invention relates generally to transformers and more particularly, to an assembly for transformer clamping on a link.
Background of the invention
A transformer is an electrical device that transfers energy between two circuits through electromagnetic induction. Currently for mounting the transformer for example, a resin cast current transformer a plate and hylum sheet is tied together. This assembly is then mounted on a link with the help of screws on both sides of the current transformer. Thus, space is required on the link outside the current transformer to tighten the screw. When screw is tightened, a gap between the plate and the link is filled and the current transformer gets clamped.
In present arrangement, the number of components required to mount the current transformer are more. Also, the space outside the current transformer gets consumed. Thus the link size on which the current transformer has to be mounted increases. The assembly of components required for the current transformer mounting is tedious.
For measurement and protection purpose, the current transformers have to be mounted on the links in switchboards. But there is no integrated arrangement for clamping of the current transformers with the links. The current transformers cannot be kept suspended as it is.
Accordingly, there is a need of an assembly for clamping a transformer on a link that overcomes the drawbacks of the prior art.

Objects of the invention
An object of the present invention is to clamp a transformer on a link with lesser space utilization.
Another object of the present invention is to clamp a transformer on a link with lesser number of components that are easy to assemble.
Summary of the invention
Accordingly, the present invention provides an assembly for a transformer clamping. The assembly is enclosed in an insulated cover and inserted inside a transformer window. The assembly comprises a first component, a second component and a spring. The first component and the second component are made of a mild steel. The first component acts as a base. The first component includes a first stepped profile, a second stepped profile and a first opening for fixing a screw thereon. The first stepped profile is adapted on a top side of the first component and the second stepped profile is adapted on a bottom side of the first component. The second component includes a first ramp/chamfer profile, a second ramp/chamfer profile and a second opening.
The first ramp/chamfer profile rests on the first stepped profile and the second ramp/chamfer profile rests on the second stepped profile. The second opening is adapted for inserting the screw therethrough. The spring is configured between the first component and the second component for keeping the first component and the second component apart.
When the screw is tightened, the ramp/chamfer profiles start riding over the stepped profiles of the first component. The spring starts compressing causing rotation of the

second component with respect to the first component. When a height of the first component coupled with the second component becomes equal to a gap between a link and the transformer window, causes trapping thereof between the link and the transformer window thereby clamping the transformer on the link.
Brief description of the drawings
Figure 1 shows a perspective view of an assembly for clamping a transformer, in accordance with the present invention;
Figure 2a is a perspective view showing a first component of the assembly for clamping the transformer of figure 1;
Figure 2b is a perspective view showing a second component of the assembly for clamping the transformer of figure 1; and
Figure 3 is a perspective view of the assembly for clamping the transformer of figure
1.
Detail description of the invention
The foregoing objects of the present invention are accomplished and the problems and shortcomings associated with the prior art. .techniques and approaches are overcome by the present invention as described below in the preferred embodiment.
The present invention provides an assembly for clamping a transformer on a link. The assembly is simple, easy to use and includes less number of components. The assembly is inserted inside a transformer window hence the space outside the

transformer is not consumed thereby allowing compact linkwork and reducing the width of the line.
The present invention is illustrated with reference to the accompanying drawings, throughout which reference numbers in bracket indicate corresponding parts in the various figures.
Referring now to figures 1-3, an assembly (100) for clamping a transformer (not shown), in accordance with the present invention is shown. The assembly (100) comprises a first component (20), a second component (40) and a spring (60). The assembly (100) is inserted in a gap between a transformer window (not shown) and a link (not shown). Specifically the assembly (100) is designed for a current transformer. However, it is understood that the assembly (100) may used for any other type of transformers.
The first component (20) acts as a base. The first component (20) includes a first stepped profile (10), a second stepped profile (12) and a first opening (14). The first stepped profile (10) is adapted on a top side (not numbered) of the first component (20). The second stepped profile (12) is adapted on a bottom side (not numbered) of the first component (20). The first opening (14) is a threaded opening adapted to fix a screw (16) thereon.
The second component (40) includes a first ramp/chamfer profile (22), a second ramp/chamfer profile (24) and a second opening (26). The first ramp/chamfer profile (22) rests on the first stepped profile (10) of the first component (20) and the second ramp/chamfer profile (24) rests on the second stepped profile (12) of the first component (20). In an embodiment, the first component (20) and the second component (40) are made of a mild steel and enclosed in an insulated cover/capsule

(not shown). The insulated cover is expandable. The second opening (26) is adapted for inserting the screw (16) therethrough.
The spring (60) is configured between the first component (20) and the second component (40). The spring (60) keeps the components (20, 40) apart. The screw (16) inserted in the components (20. 40) is surrounded with the spring (60).
Now again referring to figures 1-4, in an operation, the assembly (100) is enclosed in the insulated cover and inserted inside the transformer window. When the screw (16) is tightened, the first ramp/chamfer profile (22) rides over the first stepped profile (10) of the first component (20) and the second ramp/chamfer profile (24) rides over the second stepped profile (12) of the first component (20) thereby reducing a gap between the components (20, 40). The spring (60) starts compressing causing rotation of the second component (40) with respect to the first component (20) and increasing an overall height (H) of the assembly (100). The screw (16) is tightened till the height (H) of the assembly (100) becomes equal to the gap between the link and the transformer window. Once height (H) of the first component (20) coupled with the second component (40) becomes equal to the gap between the link and the transformer window, the screw (16) is not further tightened and the assembly (100) gets trapped between the link and the transformer. Once the screw (16) is fully tightened, the spring (60) avoids the loosening of the screw (16) thereby clamping the transformer on the link. Since the assembly (100) is trapped within the transformer width, the space outside the transformer is not needed for clamping thereby reducing the length of the link.
Advantages of the invention:

1. The assembly (100) is inserted inside the transformer window hence the space outside the transformer is not consumed thereby allowing compact linkwork and reducing the width of the line.
2. Once the assembly (100) having two components (20, 40) is inserted inside the insulated cover, the overall assembly (100) becomes clean.
3. Reduction in assembly (100) time of transformer as the number of components is less.
4. The assembly (100) is simple and aesthetically good.
The foregoing objects of the invention are accomplished and the problems and shortcomings associated with prior art techniques and approaches are overcome ,by the present invention described in the present embodiment. Detailed descriptions of the preferred embodiment are provided herein; however, it is to be understood that the present invention may be embodied in various forms. Therefore, specific details disclosed herein are not to be interpreted as limiting, but rather as a basis for the claims and as a representative basis for teaching one skilled in the art to employ the present invention in virtually any appropriately detailed system, structure, or matter. The embodiments of the invention as described above and the methods disclosed herein will suggest further modification and alterations to those skilled in the art. Such further modifications and alterations may be made without departing from the spirit and scope of the invention.

We Claim:
1. An assembly (100) for a transformer clamping, the assembly (100) enclosed in an insulated cover and inserted inside a transformer window, the assembly (100) comprising:
a first component (20) acting as a base, the first component (20) having a first stepped profile (10), a second stepped profile (12) and a first opening (14) for fixing a screw (16) thereon, the first stepped profile (10) adapted on a top side thereof and the second stepped profile (12) adapted on a bottom side thereof;
a second component (40) having
a first ramp/chamfer profile (22) resting on the first stepped profile (10),
a second ramp/chamfer profile (24) resting on the second stepped profile (12), and
a second opening (26) adapted for inserting the screw (16) therethrough; and
a spring (60) configured between the first component (20) and the second component (40) for keeping the first component (20) and the second component (40) apart,
wherein, when the screw (16) is tightened, the ramp/chamfer profiles (22, 24) of the second component (40) start riding over the stepped profiles (10, 12) of the first component (20) thereby compressing the spring (60) and causing rotation of the second component (40) with respect to the first component (20), and when a height (H) of the first component (20) coupled with the second component (40) becomes equal to a gap between a link and the transformer window, causes trapping thereof between the link and the transformer window thereby clamping the transformer on the link.

2. The assembly (100) as claimed in claim 1, wherein the first component (20) and the second component (40) are made of mild steel.