GB986913A - Improvements relating to voltage control devices - Google Patents
Improvements relating to voltage control devicesInfo
- Publication number
- GB986913A GB986913A GB4229362A GB4229362A GB986913A GB 986913 A GB986913 A GB 986913A GB 4229362 A GB4229362 A GB 4229362A GB 4229362 A GB4229362 A GB 4229362A GB 986913 A GB986913 A GB 986913A
- Authority
- GB
- United Kingdom
- Prior art keywords
- transformers
- secondary winding
- impedance
- controlled
- terminals
- 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
- H01F29/04—Variable transformers or inductances not covered by group H01F21/00 with tappings on coil or winding; with provision for rearrangement or interconnection of windings having provision for tap-changing without interrupting the load current
-
- 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
- H01F29/14—Variable transformers or inductances not covered by group H01F21/00 with variable magnetic bias
- H01F2029/143—Variable transformers or inductances not covered by group H01F21/00 with variable magnetic bias with control winding for generating magnetic bias
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Rectifiers (AREA)
Abstract
986,913. Tap changing transformers. BRENTFORD TRANSFORMERS Ltd. Oct. 24, 1963 [Nov. 8, 1962], Heading H2H. A system for regulating a voltage between two values as for example between the taps C 1 -C 6 on a transformer winding TT comprises two transformers P 1 , P 2 , connected in series across adjacent taps, and variable static variable impedance devices I I I 2 such as transductors or silicon controlled rectifiers connected across each secondary winding and controlled in opposite senses so that when one secondary winding is short circuited, the other is open circuited. To reduce the impedance range of the impedance devices and to allow for the impedance of the primary windings a booster arrangement T 3 , T 4 may be incorporated. A single load may be connected across terminals L 1 , N 1 , but a second load having its voltage varying in the opposite sense may be connected across terminals L1 1 , L. In arrangements using controlled rectifiers either reverse parallel pairs or an uncontrolled rectifier bridge with a controlled rectifier across the diagonal may be connected across the secondary winding with a parallel resistor in either case to allow load current to flow at non-conduction periods.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB4229362A GB986913A (en) | 1962-11-08 | 1962-11-08 | Improvements relating to voltage control devices |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB4229362A GB986913A (en) | 1962-11-08 | 1962-11-08 | Improvements relating to voltage control devices |
Publications (1)
Publication Number | Publication Date |
---|---|
GB986913A true GB986913A (en) | 1965-03-24 |
Family
ID=10423795
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB4229362A Expired GB986913A (en) | 1962-11-08 | 1962-11-08 | Improvements relating to voltage control devices |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB986913A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0644562A1 (en) * | 1993-09-21 | 1995-03-22 | THE NATIONAL GRID COMPANY plc | Electrical changeover switching |
-
1962
- 1962-11-08 GB GB4229362A patent/GB986913A/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0644562A1 (en) * | 1993-09-21 | 1995-03-22 | THE NATIONAL GRID COMPANY plc | Electrical changeover switching |
US5604424A (en) * | 1993-09-21 | 1997-02-18 | The National Grid Company Plc | Electrical changeover switching |
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