GB977248A - Improvements in and relating to on-load tap changing gear - Google Patents
Improvements in and relating to on-load tap changing gearInfo
- Publication number
- GB977248A GB977248A GB28736/63A GB2873663A GB977248A GB 977248 A GB977248 A GB 977248A GB 28736/63 A GB28736/63 A GB 28736/63A GB 2873663 A GB2873663 A GB 2873663A GB 977248 A GB977248 A GB 977248A
- Authority
- GB
- United Kingdom
- Prior art keywords
- rectifiers
- switches
- load tap
- july
- impedance
- 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)
- Power Conversion In General (AREA)
- Regulation Of General Use Transformers (AREA)
- Transformers For Measuring Instruments (AREA)
- Ac-Ac Conversion (AREA)
Abstract
977,248. Transformers. SOC. GENERALE DE CONSTRUCTIONS ELECTRIQUES ET MECANIQUES (ALSTHOM). July 19, 1963 [July 19, 1962], No. 28736/63. Heading H1T. On-load tap-shanging gear comprises two mechanical or electronic switches 4, 5 (Fig. 2) connectible to neighbouring tapping points 1, 2, 3 &c., of a single or polyphase transformer winding, control means to close one switch immediately after the other has opened and circuits including a controlled rectifier 12, 15 and an impedance 14, 17 arranged to by-pass the switches. The impedances may be shunted by controlled rectifiers 13, 16 and may be resistances, chokes or saturable reactors. In a modification (Fig. 3, not shown) a single impedance 22 is used and is connected between the by-pass circuits at the joining points of the two rectifiers in each such circuit. The rectifiers may be of semi-conductor or thyratron type and, as they operate for very short intervals, may carry currents much higher than the normal rating. The switches may be by-passed for short periods on opening.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR2346A FR1337340A (en) | 1962-07-19 | 1962-07-19 | On-load tap changer switch for transformers |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB977248A true GB977248A (en) | 1964-12-02 |
Family
ID=8568555
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB28736/63A Expired GB977248A (en) | 1962-07-19 | 1963-07-19 | Improvements in and relating to on-load tap changing gear |
Country Status (2)
| Country | Link |
|---|---|
| ES (1) | ES289981A1 (en) |
| GB (1) | GB977248A (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 |
-
1963
- 1963-07-13 ES ES289981A patent/ES289981A1/en not_active Expired
- 1963-07-19 GB GB28736/63A patent/GB977248A/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 |
Also Published As
| Publication number | Publication date |
|---|---|
| ES289981A1 (en) | 1963-08-16 |
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