US3760314A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transformer with improved arrangement for providing a grounding connection
Assignee: General Electric Co
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Filing: 1973-02-02
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Granted: 1973-09-18
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Expires: 1993-02-02
Abstract
Abstract A dry-type transformer including a housing with a core and coil assembly mounted in the housing. An electrically insulative terminal board is mounted in the housing and a plurality of terminals are mounted on the terminal board in spaced apart relationship to each other and to the housing. An elongated ground strap is selectively mounted to one of the terminals in first and second positions. One end of the ground strap is squared off and the other end has an attachment foot. When the groud strap is in its first position its squared off end is in interferring relationship with the adjacent edge of the terminal board and its attachment foot is spaced on the housing a distance at least equal to the normal spacing between the adjacent terminals. When the ground strap is in its second predetermined position the attachment foot is in juxtaposition to one wall of the housing and is bolted to the wall of the housing to provide electrical connection between the ground strap and the housing.
Inventors
- 👤 C Krasienko
- 👤 S Harmeyer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 09:07
CPC Classifications
H; H01; H01F; H01F27/00; H01F27/40
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
156 words
A dry-type transformer, including: a. a housing; b. a core and coil assembly mounted in said housing; c. a terminal board of electrically insulative material mounted in said housing; d. a plurality of terminals of electrically conductive material mounted on said terminal board in spaced apart relationship to each other and to said housing to facilitate connection of said core and coil assembly to a source of electric energy and to a load; e. a ground strap, mounting means for selectively mounting said ground strap to one of said terminals in first and second predetermined positions; f. the length of said ground strap and the position of said one of said terminals with respect to said housing being so interrelated that, when said ground strap is in its first predetermined position, it is substantially spaced from said housing and, when said ground strap is in its second predetermined position, it is in juxtaposition to said housing.
Claim 2
Dependent Claim
156 words
A dry-type transformer, including: a. a housing; b. a core and coil assembly mounted in said housing; c. a terminal board of electrically insulative material mounted in said housing; d. a plurality of terminals of electrically conductive material mounted on said terminal board in spaced apart relationship to each other and to said housing to facilitate connection of said core and coil assembly to a source of electric energy and to a load; e. a ground strap, mounting means for selectively mounting said ground strap to one of said terminals in first and second predetermined positions; f. the length of said ground strap and the position of said one of said terminals with respect to said housing being so interrelated that, when said ground strap is in its first predetermined position, it is substantially spaced from said housing and, when said ground strap is in its second predetermined position, it is in juxtaposition to said housing.
Claim 3
Dependent Claim
44 words
A dry-type transformer as set forth in claim 1, wherein: the distance between said ground strap and said housing, when said ground strap is in its first predetermined position, is at least as great as the normal distance between adjacent ones of said terminals.
Claim 4
Dependent Claim
57 words
A dry-type transformer as set forth in claim 1, wherein: said grouNd strap has an interferring relationship with said terminal board when said ground strap is mounted to said one of said terminals such that said ground strap must be dismounted from said one of said terminals to be moved between its first and second predetermined positions.
Claim 5
Dependent Claim
149 words
A dry-type transformer, including: a. a plurality of walls defining a housing; b. a core and coil assembly mounted in said housing; c. a plurality of terminals of electrically conductive material mounted on said housing in spaced apart relationship to each other and to said housing to facilitate connection of said core and coil assembly to a source of electric energy and to a load; d. an elongated ground strap, mounting means for selectively mounting said ground strap to one of said terminals in first and second predetermined positions; e. the length of said ground strap and the position of said one of said terminals with respect to said housing being so interrelated that, when said ground strap is in its first predetermined position, it is substantially spaced from said housing and, when said ground strap is in its second predetermined position, it is in juxtaposition to said housing.
Claim 6
Dependent Claim
149 words
A dry-type transformer, including: a. a plurality of walls defining a housing; b. a core and coil assembly mounted in said housing; c. a plurality of terminals of electrically conductive material mounted on said housing in spaced apart relationship to each other and to said housing to facilitate connection of said core and coil assembly to a source of electric energy and to a load; d. an elongated ground strap, mounting means for selectively mounting said ground strap to one of said terminals in first and second predetermined positions; e. the length of said ground strap and the position of said one of said terminals with respect to said housing being so interrelated that, when said ground strap is in its first predetermined position, it is substantially spaced from said housing and, when said ground strap is in its second predetermined position, it is in juxtaposition to said housing.
Claim 7
Dependent Claim
44 words
A dry-type transformer, as set forth in claim 4, wherein: the distance between said ground strap and said housing, when said ground strap is in its first predetermined position, is at least as great as the normal distance between adjacent ones of said terminals.
Claim 8
Dependent Claim
111 words
A dry-type transformer as set forth in claim 4, wherein: said ground strap defines an opening therein elongated in the direction of the longitudinal axis of said ground strap; said mounting means includes a bolt to be received in said opening; said bolt engaging said ground strap at one end of said opening, when said ground strap is in its first predetermined position, for assuring that said ground strap is substantially spaced from said housing and said bolt engaging said ground strap at the other end of said opening, when said ground strap is in its second predetermined position, for assuring that said ground strap is in juxtaposition to said housing.
Claim 9
Dependent Claim
196 words
A dry-type transformer, including: a. a plurality of walls forming a housing; b. a core and coil assembly mounted in said housing; c. an elongated terminal board of electrically insulative material mounted in said housing and extending generally perpendicular to one of said housing walls; d. a plurality of terminals of electrically conductive material mounted on said terminal board in spaced apart relationship to each other and to said housing to facilitate connection of said core and coil assembly to a source of electric energy and to a load; e. an elongated ground strap, said strap being squared-off at one end and having an attachment foot at its other end; f. mounting means for selectively mounting said ground strap to the one of said terminals closest to said one of said housing walls in first and second predetermined positions; g. said ground strap, when in its first predetermined position, extend from said one of said terminals in spaced relationship to said housing and generally parallel to said one housing wall and said attachment foot of said ground strap being in juxtaposition to said one housing wall when said ground strap is in its second predetermined position.
Claim 10
Dependent Claim
196 words
A dry-type transformer, including: a. a plurality of walls forming a housing; b. a core and coil assembly mounted in said housing; c. an elongated terminal board of electrically insulative material mounted in said housing and extending generally perpendicular to one of said housing walls; d. a plurality of terminals of electrically conductive material mounted on said terminal board in spaced apart relationship to each other and to said housing to facilitate connection of said core and coil assembly to a source of electric energy and to a load; e. an elongated ground strap, said strap being squared-off at one end and having an attachment foot at its other end; f. mounting means for selectively mounting said ground strap to the one of said terminals closest to said one of said housing walls in first and second predetermined positions; g. said ground strap, when in its first predetermined position, extend from said one of said terminals in spaced relationship to said housing and generally parallel to said one housing wall and said attachment foot of said ground strap being in juxtaposition to said one housing wall when said ground strap is in its second predetermined position.
Claim 11
Dependent Claim
37 words
A dry-type transformer as set forth in claim 7, further including connection means for forming an electrical connection between said attachment foot and said one housing wall when said ground strap is in its second predetermined position.
Claim 12
Dependent Claim
151 words
A dry-type transformer as set forth in claim 7, wherein: said ground strap defines an opening therein adjacent said one end thereof and elongated in the direction of the longitudinal axis of said ground strap; said mounting means includes a bolt to be received in said opening; said bolt engaging said ground strap at the end of the opening closest to said one end of said ground strap, when said ground strap is in its First predetermined position, to assure that said one end of said ground strap is in juxtaposition to said terminal board and that said attachment foot is spaced from said housing; and said bolt engaging said ground strap at the end of the opening remote from said one end of said ground strap, when said ground strap is in its second predetermined position, to assure that said attachment foot is in juxtaposition to said one housing wall.
References Cited (Backward Citations)
US2220615A
Cited
US3435125A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-09-17 | 1977-03-19 | 1977-09-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-17 | 1981-03-19 | 1981-09-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-17 | 1985-03-19 | 1985-09-18 | $7700.00 | Window Closed / Lapsed |