GB649096A - Improvements in and relating to transformer tap changing under load systems - Google Patents
Improvements in and relating to transformer tap changing under load systemsInfo
- Publication number
- GB649096A GB649096A GB14893/47A GB1489347A GB649096A GB 649096 A GB649096 A GB 649096A GB 14893/47 A GB14893/47 A GB 14893/47A GB 1489347 A GB1489347 A GB 1489347A GB 649096 A GB649096 A GB 649096A
- Authority
- GB
- United Kingdom
- Prior art keywords
- shaft
- ratio adjusters
- transfer switches
- adjusters
- cam
- 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
- 230000002441 reversible effect Effects 0.000 abstract 2
- 238000004804 winding Methods 0.000 abstract 2
- 230000007935 neutral effect Effects 0.000 abstract 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/0005—Tap change devices
- H01H9/0027—Operating mechanisms
Landscapes
- Transmission Devices (AREA)
Abstract
649,096. Transformers. BRITISH THOMSON-HOUSTON CO., Ltd. June 5, 1947, No. 14893. Convention date, June 7, 1946. [Class 38 (ii)] [Also in Group XXXVII] An on-load transformer tap-changing system comprises ratio adjusters co-operating with taps of the windings, a reversing switch and a set of transfer switches wherein the transfer switches are actuated from a train of cascaded Geneva gears, the first gear in the train being actuated by a lay-shaft driven from the main drive shaft driving the ratio adjusters and the reversing switch. A reversible motor 31 drives a main shaft 12 through gearing and a clutch 33, the tap-changing ratio adjusters 4, 5, 6, 7 being driven by the shaft through any suitable means (e.g. Geneva gears) in known manner. Initial rotation of the shaft 12 from the neutral position (shown in the Figure) causes the layshaft 29 to rotate a cam-shaft 25 through cascaded Geneva gears 28, 27, 26 so that one or other of the transfer switches 20, 22; 21, 23 is opened after a few degrees rotation of the cam 24. Thus the necessary change of transformer connections is made before any step has been made by the ratio adjusters. At the end of a sequence of operations of the ratio adjusters the cam 39 operates one or other of the limit switches 37, 38 to stop the motor, an additional safeguard being provided in the form of a clutch 33 which disconnects the shaft 12 from the motor 31 should the limit switches fail. A reversing switch 15 is provided to reverse the connection of the winding 2, but since it may be operated at any time during the initial half revolution of the ratio adjusters 6, 7 it may be of the slow operated type and be driven from the drive for the ratio adjusters 4, 5. After the initial movement of the shaft 29 to operate the transfer switches, further movement of the shaft causes the transfer switches to open correspondingly more as the voltage between the lines 16, 17 increases.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US674949A US2480589A (en) | 1946-06-07 | 1946-06-07 | Electromechanical tap changing mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB649096A true GB649096A (en) | 1951-01-17 |
Family
ID=24708511
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB14893/47A Expired GB649096A (en) | 1946-06-07 | 1947-06-05 | Improvements in and relating to transformer tap changing under load systems |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US2480589A (en) |
| GB (1) | GB649096A (en) |
Families Citing this family (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2648806A (en) * | 1948-03-24 | 1953-08-11 | Detrex Corp | Motor control for centrifuges |
| US2623394A (en) * | 1948-12-29 | 1952-12-30 | Rca Corp | Frequency band and channel selecting mechanism |
| US2672579A (en) * | 1950-07-03 | 1954-03-16 | Cutler Hammer Inc | Rotary shaft multiposition electrical controller |
| US2693573A (en) * | 1950-12-21 | 1954-11-02 | Moloney Electric Company | Transformer on-load tap changing mechanisms |
| US2791648A (en) * | 1951-08-09 | 1957-05-07 | Mc Graw Edison Co | Drive mechanism |
| US2798208A (en) * | 1953-10-05 | 1957-07-02 | George R Cooney | Waveguide switch |
| US2831074A (en) * | 1954-01-11 | 1958-04-15 | Schaefer Joseph | Electrical switch and circuit |
| US2811594A (en) * | 1954-09-20 | 1957-10-29 | Rca Corp | Switch |
| US2852727A (en) * | 1956-08-20 | 1958-09-16 | Photographic Analysis Inc | Mechanical memory |
| US3155782A (en) * | 1959-05-01 | 1964-11-03 | Mc Graw Edison Co | Switch actuating mechanism for controlled speed tap changer |
| US3100865A (en) * | 1960-11-17 | 1963-08-13 | Allis Chalmers Mfg Co | Control system for tap changing regulator |
| US3204176A (en) * | 1961-04-26 | 1965-08-31 | Mc Graw Edison Co | Tap changing furnace transformer |
| DE1245489B (en) * | 1961-10-28 | 1967-07-27 | Reinhausen Maschf Scheubeck | Tap selector for tap changers of transformers |
| NL299490A (en) * | 1962-10-19 | |||
| US3239616A (en) * | 1964-05-05 | 1966-03-08 | Crane Co | Valve indicator and limit switch combination |
| US3949825A (en) * | 1971-12-24 | 1976-04-13 | Aisin Seiki Kabushiki Kaisha | Safety belt for vehicles |
| CN112636244B (en) * | 2020-12-11 | 2022-03-08 | 国网湖南省电力有限公司 | Design method of dancing-eliminating and ice-melting transformer with wide voltage regulation and fine current regulation |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE321788C (en) * | 1919-03-15 | 1920-06-14 | Siemens Schuckertwerke G M B H | Copy work for elevators |
| US1720189A (en) * | 1925-05-25 | 1929-07-09 | Jackson Albert Henry | Electric-motor-control system |
| US1787292A (en) * | 1928-11-03 | 1930-12-30 | Gen Electric | Circuit-controlling device |
| US2073579A (en) * | 1934-08-25 | 1937-03-09 | Allis Chalmers Mfg Co | Tap changing mechanism |
| US2009383A (en) * | 1934-11-01 | 1935-07-30 | Gen Electric | Transformer tap-changing apparatus |
| US2200989A (en) * | 1938-01-05 | 1940-05-14 | Gen Electric | Electric regulator |
| US2200979A (en) * | 1939-06-22 | 1940-05-14 | Gen Electric | Transformer tap-changing system |
| US2349682A (en) * | 1942-10-10 | 1944-05-23 | Westinghouse Electric & Mfg Co | Electrical apparatus |
| US2399943A (en) * | 1942-11-13 | 1946-05-07 | Allis Chalmers Mfg Co | Electrical regulating apparatus |
| US2398007A (en) * | 1944-06-19 | 1946-04-09 | Cutler Hammer Inc | Electric circuit controller |
-
1946
- 1946-06-07 US US674949A patent/US2480589A/en not_active Expired - Lifetime
-
1947
- 1947-06-05 GB GB14893/47A patent/GB649096A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| US2480589A (en) | 1949-08-30 |
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