Title of Invention

"A UNIVERSAL CONNECTOR FOR METAL CLAD COMPACT GAS INSULATED SUBSTATION EQUIPMENT"

Abstract

This invention relates to a universal connector for compact electrical equipment in particular for metal clad compact gas insulated substation equipment comprising; a shaped body made of high purity conducting metals and alloys, and sizeably configured to correspond the rated voltage, current, and power of the electrical equipment; and at least two flat seating with circular cross-section for placement and joining of the intended connection, wherein the body is configured with a hollow spherical shape, to allow relieving of electricall stress and wherein a minimum distance between the at least two seatings is maintained to reduce the path length which achieves a low resistance connection.

Full Text

2 FIELD OF INVENTION The invention relates to a universal connector for compact electrical equipment. More particularly, the invention relates to a universal connector for metal-clad compact gas insulated substation equipment. BACKGROUND OF INVENTION Connectors are primarily used for linking or branching current in an electrical system. These are links between one module / element / sub assembly to another module /element / sub assembly of electrical substation equipment. Connector profile shall be commensurate to the application for reliable operation. To form any required circuit configurations and to provide flexibility in circuit formation, connectors are essential in substation equipment. Profiled connectors are used in compact switchgear due to constraint of critical stresses and equipment dimensions. The basic design philosophy of these connectors is be aimed at providing stress-relieved connections between high voltage sections of the subject compact switchgear equipment. Application specific connections are in use so far. Conventionally, connectors of different profiles with various orientations are used based on their application, in modules of metal-clad gas insulated substation. In general, connectors in gas insulated / hybrid / compact type switchgear have the following applications: 3 1. Straight electrical connection within module to extend lengths of bus bar. 2. In-line connection / assembly of two different modules. 3. Angular - connection of two different modules / connection in different orientations (90°, 60°, 30° etc.). 4. Housings for elements of switching modules like circuit breaker, disconnector, earth switches etc. 5. Other than specified above - like end shields, thermal sink / radiator etc. As shown in figure - 1, generally different connectors such as branching (T-type) ,angular ( L-type) and straight (in-line) are used for metal-clad applications. Three different geometries and set of accessories are essential for realizing intended application. Conventional connection requires additional space for their placement; results in increased dimensions of substation equipment. OBJECTS OF THE INVENTION It is therefore an object of the invention to propose a universal connector adaptable in compact electrical equipment, in particular metal clad and gas insulated equipment, which eliminates the disadvantages of the prior art. Another object of the invention is to propose a universal connector adaptable in compact electrical equipment, in particular metal clad and gas insulated equipment, which provides modularity. 4 A still another object of the invention is to propose a universal connector adaptable in compact electrical equipment, in particular metal clad and gas insulated equipment, which provides multiple functions including static and dynamic transfer of current including branching of current. A further object of the invention is to propose a universal connector adaptable in compact electrical equipment, in particular metal clad and gas insulated equipment, which reduces electrical stress in the vicinity of the connector. Yet another object of the invention is to propose a universal connector adaptable in compact electrical equipment, in particular metal clad and gas insulated equipment, which acts as a base for the contact means of the switching elements. A still further object of the invention is to propose a universal connector adaptable in compact electrical equipment, in particular metal clad and gas insulated equipment, which provides the mechanical support for the switching elements including acting as a guide for the switching elements. Yet further object of the invention is to propose a universal connector adaptable in compact electrical equipment, in particular metal clad and gas insulated equipment, which acts as an electrically stress relieved end shield. 5 Another object of the invention is to propose a universal connector adaptable in compact electrical equipment, in particular metal clad and gas insulated equipment, which improves the temperature distribution in the electrical equipment. A still another object of the invention is to propose a universal connector adaptable in compact electrical equipment, in particular metal clad and gas insulated equipment, which acts as an effective heat radiation / conduction device for the electrical equipment. Yet another object of the invention is to propose a universal connector adaptable in compact electrical equipment, in particular metal clad and gas insulated equipment, which is cost-effective. SUMMARY OF THE INVENTION Accordingly there is provided a universal connector for compact electrical equipment in particular for metal clad compact gas insulated substation equipment comprising; a shaped body made of high purity conducting metals and alloys, and sizably configured to correspond the rated voltage, current, and power of the electrical equipment; and at least two flat seating with circular cross-section for placement and joining of the intended connection, wherein the body is configured in a hollow spherical shape, to allow relieving of electrical stress and wherein a minimum distance between the at least two seatings is maintained to reduce the path length which achieves a low resistance connection. 6 According to the invention, the universal connector has the capability to transfer of static and dynamic current with or without support element. Further, the connector is self-contained and acts as electrically stress relieved end shield. Additionally, the connector has integral stress relieving capabilities, replacing additional electrostatic shields. BRIEF DESCRIPTION OF THE ACCOMPANYING DRAWINGS The present invention will now be described with the help of the accompanying drawings, where: Figure 1: Shows the conventional connectors. Figure 2: Shows a first embodiment of a Universal Connector adaptable in a compact electrical equipment. Figure 3: Shows a second embodiment of the Universal Connector according to the invention. DETAIL DESCRIPTION OF THE INVENTION The spherical connector (01) according to the invention constitutes a unique component designed to cater to multiple requirements in compact switchgear equipment. The size of the connectors (01) is corresponding to the rated voltage, current and power. The materials of the connector (01) are high purity conducting metals and alloys. As shown in figure 3, apart from a hollow spherical 7 shaped body (B), the connector (01) features at least two plane seating area (S1, S2) for placement and bolting of the intended connection (c). The seatings (S1, S2) are flat with circular cross section. The seatings (S1, S2) are machined to desired orientations of the connection (c) using accurate 3-D machining / milling equipment. Sharp intersections of the connector (01) and the connection (c) are beveled to match each other. The first requirement of in-line connection is met by said two parallel seatings (Si, S2) which provide the connections in the connector (01). Minimum distance between the seatings (Si, S2) reduces the path length and hence results in a low resistance connection. The spherical shape of the connector (01) helps in relieving electrical stresses. For angular connections (including "L", "T" or 0°-90° of any orientation), as shown in figure - 2, the seatings (S3, S4) are machined to desired angles in order to realize the desired orientation of the connections. Multiple connections (c) as in case of double bus systems are also possible at different connection angles using the connector (01). The spherical connector (01) in such cases also provides low resistance path with controlled electrical stress in its vicinity. A housing (H) of the connector (01) accommodates contacts of switching elements (02), for example, fixed or movable contact (03) replacing the bolting means as described herein above in case of the first application. The spherical connector profile relieves electrical stresses in such configurations (refer Fig. 3). When used as a current collector (04), the bore (b) of the connector (01) is used for housing current collection elements with/without intermediate component 8 (not shown). This results in a reduced contact resistance and heat dissipation from the device. The spherical connector (01) is utilized as an effective supporting element and a guide to the insulating and conducting drive components of switching elements (02). The profile of the spherical connector (01) and commonality of use helps in configurating a cost-effective compact switchgear equipment. In terminal mode, the connector (01) with one seating (S1) is an electrically stress relieved terminal. Finally the high cooling surface area provided by the hollow spherical connector (01), is an effective heat radiation / conduction device in the metal-clad equipment. The application helps in reducing temperature and improves temperature profile of the subject switchgear equipment. The universal connector facilitates multiple connecting options (refer Fig. 3), and relieves electrical and thermal stress in metal-clad gas insulated power equipment. The connector of the invention is a modular spherical connector and the flat seating are for termination. The connector is adaptable for multiple functions including static and dynamic transfer of current and branching of current of switchgear equipment. The connector restores electrical stress in vicinity. 9 The connector can be used as the base for contact system of the switching elements. The connector is self contained and acts as an electrically stress relieved end shield. The surface of the connector improves temperature distribution in metal-clad gas insulated power equipment. 10 WE CLAIM 1. A universal connector for compact electrical equipment in particular for metal clad compact gas insulated substation equipment comprising; a shaped body (B) made of high purity conducting metals and alloys, and sizably configured to correspond the rated voltage, current, and power of the electrical equipment; and at least two flat seating (S1, S2) with circular cross-section for placement and joining of the intended connection (c), wherein the body is configured with a hollow spherical shape, to allow relieving of electrical stress, and wherein a minimum distance between the at least two seatings is maintained to reduce the path length which achieves a low resistance connection. 2. The connector as claimed in claim 1, wherein when an intended connection (C) is of angular type, the connector is connected on the flat seatings by means of bolting means. 3. The connector as claimed in claim 1 or 2, wherein the seatings are machined to matching angles in respect of angular connections (c) for example. "L", "T", or "0° to 90°", or, of any orientation. 11 4. The connector as claimed in claim 1, wherein when the intended connection (c) is of straight type, the housing (H) of the connector accommodates switching elements (2) for example fixed or moving contacts (3) thereby eliminating the bolting means. 5. The connector as claimed in claim 1 or 4, wherein the connector when acting as a current collector (4), a bore (b) of the connector accommodates the current collection elements. 6. A universal connector for compact electrical equipment in particular for metal clad compact gas insulated substation equipment as substantially described herein with reference to the accompanying drawings. This invention relates to a universal connector for compact electrical equipment in particular for metal clad compact gas insulated substation equipment comprising; a shaped body made of high purity conducting metals and alloys, and sizeably configured to correspond the rated voltage, current, and power of the electrical equipment; and at least two flat seating with circular cross-section for placement and joining of the intended connection, wherein the body is configured with a hollow spherical shape, to allow relieving of electricall stress and wherein a minimum distance between the at least two seatings is maintained to reduce the path length which achieves a low resistance connection.

Documents:

00074-kol-2008-abstract.pdf

00074-kol-2008-claims.pdf

00074-kol-2008-correspondence others.pdf

00074-kol-2008-description complete.pdf

00074-kol-2008-drawings.pdf

00074-kol-2008-form 1.pdf

00074-kol-2008-form 2.pdf

00074-kol-2008-form 3.pdf

00074-kol-2008-gpa.pdf

74-KOL-2008-(09-08-2012)-ABSTRACT.pdf

74-KOL-2008-(09-08-2012)-AMANDED CLAIMS.pdf

74-KOL-2008-(09-08-2012)-DESCRIPTION (COMPLETE).pdf

74-KOL-2008-(09-08-2012)-DRAWINGS.pdf

74-KOL-2008-(09-08-2012)-EXAMINATION REPORT REPLY RECEIVED.pdf

74-KOL-2008-(09-08-2012)-FORM-1.pdf

74-KOL-2008-(09-08-2012)-FORM-2.pdf

74-KOL-2008-(09-08-2012)-OTHERS.pdf

74-KOL-2008-(09-08-2012)-PA-CERTIFIED COPIES.pdf

74-KOL-2008-Form 13-130315.pdf

74-kol-2008-form 18.pdf

74-KOL-2008-GRANTED-FORM 1.pdf

74-KOL-2008-GRANTED-SPECIFICATION-COMPLETE.pdf

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