GB329048A - Electrical apparatus and means for protecting the same against transients, surges, and the like - Google Patents
Electrical apparatus and means for protecting the same against transients, surges, and the likeInfo
- Publication number
- GB329048A GB329048A GB580129A GB580129A GB329048A GB 329048 A GB329048 A GB 329048A GB 580129 A GB580129 A GB 580129A GB 580129 A GB580129 A GB 580129A GB 329048 A GB329048 A GB 329048A
- Authority
- GB
- United Kingdom
- Prior art keywords
- gap
- dielectric
- casing
- gaseous
- bushing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/32—Insulating of coils, windings, or parts thereof
- H01F27/324—Insulation between coil and core, between different winding sections, around the coil; Other insulation structures
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Housings And Mounting Of Transformers (AREA)
Abstract
329,048. Smith, F. S. Feb. 21, 1929. Protective arrangements. - Electrical apparatus is protected against excess voltage by being connected in shunt with a fast discharge gap, the apparatus and the gap being housed in a casing which, with the gap, is filled with gaseous dielectric under pressure. The fast discharge gap is constructed to avoid corona preceding the breakdown and the gaseous dielectric has a low dielectric time lag. The dielectric may be a single gas such as nitrogen or carbon dioxide or a mixture of gases such as helium and nitrogen in such proportions and at such a density or pressure, for example, sixteen atmospheres, as will give the required insulation characteristic combined with adequate thermal conductivity. The transformer has a primary winding 4 on an insulating cylinder, and a spaced sectionalized high tension secondary winding on a cylindrical insulating support 5. The casing 2 is sealed and filled with the gaseous dielectric under pressure so that the windings have solid and gaseous insulations in series between them. The low tension terminals are housed in a bushing 24 in the base; one end of the secondary is earthed on the casing and the other connected to a terminal 8. A fast discharge gap is constituted by a conducting tube 10 surrounding and in connection with the terminal lead and a conducting bushing 11, welded into the transformer casing, which supports an insulating housing 9 for the terminal. The gaseous dielectric fills this gap and bushing. Breakdown of the gap is designed to occur at a voltage less than that which would harm the apparatus or rupture or overstress the solid dielectric.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB580129A GB329048A (en) | 1929-02-21 | 1929-02-21 | Electrical apparatus and means for protecting the same against transients, surges, and the like |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB580129A GB329048A (en) | 1929-02-21 | 1929-02-21 | Electrical apparatus and means for protecting the same against transients, surges, and the like |
Publications (1)
Publication Number | Publication Date |
---|---|
GB329048A true GB329048A (en) | 1930-05-15 |
Family
ID=9802864
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB580129A Expired GB329048A (en) | 1929-02-21 | 1929-02-21 | Electrical apparatus and means for protecting the same against transients, surges, and the like |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB329048A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0375502A1 (en) * | 1988-12-23 | 1990-06-27 | Sagem Allumage | Ignition coil with a divided high-voltage winding, particularly for an internal-combustion engine |
-
1929
- 1929-02-21 GB GB580129A patent/GB329048A/en not_active Expired
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0375502A1 (en) * | 1988-12-23 | 1990-06-27 | Sagem Allumage | Ignition coil with a divided high-voltage winding, particularly for an internal-combustion engine |
FR2641038A1 (en) * | 1988-12-23 | 1990-06-29 | Marchal Equip Auto | |
US5008643A (en) * | 1988-12-23 | 1991-04-16 | Valeo Electronique | Ignition coil having a divided high tension winding, in particular for internal combustion engines |
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