GB424408A - Improvements in and relating to transformer tap changing arrangements - Google Patents
Improvements in and relating to transformer tap changing arrangementsInfo
- Publication number
- GB424408A GB424408A GB32323/34A GB3232334A GB424408A GB 424408 A GB424408 A GB 424408A GB 32323/34 A GB32323/34 A GB 32323/34A GB 3232334 A GB3232334 A GB 3232334A GB 424408 A GB424408 A GB 424408A
- Authority
- GB
- United Kingdom
- Prior art keywords
- tap
- changing
- grid
- circuit
- switch
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Circuit Arrangements For Discharge Lamps (AREA)
Abstract
424,408. Transformers. BRITISH THOMSON-HOUSTON CO., Ltd., Crown House, Aldwych, London. Nov. 9, 1934, No. 32323. Convention date, Nov. 9, 1933. Addition to 400,962. [Class 38 (ii)] In an arrangement for tap-changing under load in which an intermediate tap is permanently connected to the load circuit through a device offering low impedance only when subjected to the full voltage of the transformer winding as when the tap-changing switch is being actuated as described in the parent Specification, the device comprises a pair of oppositely connected grid-controlled gaseous discharge devices 7, 8 the grid circuits of which are controlled either by the main contacts of the tap-changing switch 3 or auxiliary contacts thereon so that the discharge devices are blocked during normal operation and rendered conductive during actuation of the tap-changing switch. The Figure shows the control circuit of one grid only which circuit includes a change-over switch 13 actuated by a cam 16 on the spindle of the tap-changing gear whereby the required grid control is effected. Heating of the cathodes of the devices 7, 8 may be discontinued during normal operation of the transformer, the heating circuit being completed only at the commencement of the tapchanging operation, starting of the tap-changing motor 5 being delayed to allow the cathodes to reach operating temperature.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE424408X | 1933-11-09 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB424408A true GB424408A (en) | 1935-02-20 |
Family
ID=6476540
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB32323/34A Expired GB424408A (en) | 1933-11-09 | 1934-11-09 | Improvements in and relating to transformer tap changing arrangements |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB424408A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102857022A (en) * | 2012-08-13 | 2013-01-02 | 吴江市东泰电力特种开关有限公司 | Non-electric on-load tap-changer shifting structure |
-
1934
- 1934-11-09 GB GB32323/34A patent/GB424408A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102857022A (en) * | 2012-08-13 | 2013-01-02 | 吴江市东泰电力特种开关有限公司 | Non-electric on-load tap-changer shifting structure |
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