GB349002A - Improvements in or relating to alternating electric current static transformers - Google Patents
Improvements in or relating to alternating electric current static transformersInfo
- Publication number
- GB349002A GB349002A GB2206/31A GB220631A GB349002A GB 349002 A GB349002 A GB 349002A GB 2206/31 A GB2206/31 A GB 2206/31A GB 220631 A GB220631 A GB 220631A GB 349002 A GB349002 A GB 349002A
- Authority
- GB
- United Kingdom
- Prior art keywords
- feb
- class
- primary
- changes
- parallel
- 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
- H01F29/00—Variable transformers or inductances not covered by group H01F21/00
- H01F29/02—Variable transformers or inductances not covered by group H01F21/00 with tappings on coil or winding; with provision for rearrangement or interconnection of windings
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Protection Of Transformers (AREA)
- Ac-Ac Conversion (AREA)
Abstract
349,002. Regulating transformers. PEDRAZZO, G., 3 bis, Via Cernaia, Biella, Italy. Feb. 26, 1930, No. 2206/31. Convention date, Feb. 26, 1929. Divided on 344,371. [Class 38 (ii).] In order to reduce losses due to magnetizing current &c. when a transformer is operating on light loads, provision is made for reducing the effective number of turns on both the primary and secondary sides so as to reduce the saturation of the iron without altering the transformation ratio. The Figure shows the winding connections on both the primary and secondary sides of a three-phase transformer under four different operating conditions. Each winding comprises four separate coils, three of which may be cut out of circuit in succession by means of a drum or other controller. Other variations may be obtained by changes in the phase connections from star to delta. Specifications 313,501, [Class 38 (iii), Heating by electricity], and 344,371 are referred to. According to the Specification as open to inspection under Sect. 91 (3) (a) changes may also be effected by connecting two or more of the coils in parallel or series-parallel. This subject-matter does not appear in the Specification as accepted.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT349002X | 1929-02-26 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB349002A true GB349002A (en) | 1931-05-21 |
Family
ID=11240767
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2206/31A Expired GB349002A (en) | 1929-02-26 | 1930-02-26 | Improvements in or relating to alternating electric current static transformers |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB349002A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0050432A1 (en) * | 1980-10-03 | 1982-04-28 | Ford Motor Company Limited | Transformer |
-
1930
- 1930-02-26 GB GB2206/31A patent/GB349002A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0050432A1 (en) * | 1980-10-03 | 1982-04-28 | Ford Motor Company Limited | Transformer |
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