GB1236505A - On-load tap-changing arrangement for star-point connection to tapped transformers or chokes - Google Patents
On-load tap-changing arrangement for star-point connection to tapped transformers or chokesInfo
- Publication number
- GB1236505A GB1236505A GB5142869A GB5142869A GB1236505A GB 1236505 A GB1236505 A GB 1236505A GB 5142869 A GB5142869 A GB 5142869A GB 5142869 A GB5142869 A GB 5142869A GB 1236505 A GB1236505 A GB 1236505A
- Authority
- GB
- United Kingdom
- Prior art keywords
- tap
- rectifier
- capacitors
- rectifiers
- star
- 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)
- Rectifiers (AREA)
- Thyristor Switches And Gates (AREA)
Abstract
1,236,505. Transformers. SIEMENS A.G. 20 Oct., 1969 [18 Oct., 1968], No. 51428/69. Heading H1T. In a tap changing arrangement for the star point of a polyphase transformer, two polyphase rectifier bridges 40, 50 are connected to tap selector arms 2, 3 respectively, each bridge having a respective controlled rectifier 60, 70 or mechanical switch. Fig. 1 (not shown) in its D.C. arm. The negative poles of the controlled rectifiers are connected by a capacitor 110 and the positive poles by a capacitor 150 such that when tap selector arm 3 is connected to a free tap, both capacitors charge to the differential tap voltage. When controlled rectifier 70 is then fired these capacitors cause twice the differential tap voltage to appear across the rectifier to be switched off thus ensuring its immediate switching off. Inductors 900, 800 help the smooth commutation process. By controlling the pulse inputs to the rectifiers the tap changeover can be made a gradual process. In Fig. 1 (not shown) interlinked mechanical switches are used instead of the controlled rectifiers, the discharging capacitors in this case suppressing the arc which develops at the " opening " switch.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19681803741 DE1803741B2 (en) | 1968-10-18 | 1968-10-18 | ARRANGEMENT FOR SWITCHING THE LOAD FOR STEPPED TRANSFORMERS OR REACTORS |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1236505A true GB1236505A (en) | 1971-06-23 |
Family
ID=5710810
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB5142869A Expired GB1236505A (en) | 1968-10-18 | 1969-10-20 | On-load tap-changing arrangement for star-point connection to tapped transformers or chokes |
| GB5143369A Expired GB1246920A (en) | 1968-10-18 | 1969-10-20 | On-load tap-changing arrangement for use with tapped transformers and chokes |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB5143369A Expired GB1246920A (en) | 1968-10-18 | 1969-10-20 | On-load tap-changing arrangement for use with tapped transformers and chokes |
Country Status (8)
| Country | Link |
|---|---|
| JP (3) | JPS4932083B1 (en) |
| BE (2) | BE740008A (en) |
| CH (2) | CH497082A (en) |
| DE (1) | DE1803741B2 (en) |
| FR (2) | FR2020985A1 (en) |
| GB (2) | GB1236505A (en) |
| NL (2) | NL6915144A (en) |
| SE (2) | SE349691B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5094456A (en) * | 1973-12-24 | 1975-07-28 | ||
| FR2344185A1 (en) * | 1976-03-09 | 1977-10-07 | Le P Experimen | DEVICE FOR THE CONTACTLESS SWITCHING OF THE TAPS OF A TRANSFORMER ON LOAD |
| SE9903392L (en) * | 1999-09-20 | 2001-03-21 | Abb Ab | Electric coupling device, method for controlling the same and use of the coupling device |
| GB2424766B (en) * | 2005-03-31 | 2007-06-27 | Areva T & D Sa | An on-load tap changer |
-
1968
- 1968-10-18 DE DE19681803741 patent/DE1803741B2/en active Granted
-
1969
- 1969-09-16 CH CH1394669A patent/CH497082A/en not_active IP Right Cessation
- 1969-09-16 CH CH1394569A patent/CH506172A/en not_active IP Right Cessation
- 1969-10-07 NL NL6915144A patent/NL6915144A/xx not_active Application Discontinuation
- 1969-10-09 JP JP8107869A patent/JPS4932083B1/ja active Pending
- 1969-10-09 NL NL6915287A patent/NL6915287A/xx not_active Application Discontinuation
- 1969-10-09 BE BE740008D patent/BE740008A/xx unknown
- 1969-10-14 FR FR6935166A patent/FR2020985A1/fr not_active Withdrawn
- 1969-10-16 FR FR6935523A patent/FR2021001B1/fr not_active Expired
- 1969-10-16 BE BE740370D patent/BE740370A/xx unknown
- 1969-10-17 SE SE1427569A patent/SE349691B/xx unknown
- 1969-10-17 SE SE1427469A patent/SE361376B/xx unknown
- 1969-10-20 GB GB5142869A patent/GB1236505A/en not_active Expired
- 1969-10-20 GB GB5143369A patent/GB1246920A/en not_active Expired
-
1972
- 1972-06-28 JP JP6488172A patent/JPS4933494B1/ja active Pending
- 1972-06-28 JP JP6488072A patent/JPS4933493B1/ja active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| FR2021001A1 (en) | 1970-07-17 |
| CH506172A (en) | 1971-04-15 |
| NL6915144A (en) | 1970-04-21 |
| BE740008A (en) | 1970-03-16 |
| JPS4933494B1 (en) | 1974-09-07 |
| JPS4933493B1 (en) | 1974-09-07 |
| SE349691B (en) | 1972-10-02 |
| DE1803741B2 (en) | 1972-06-22 |
| GB1246920A (en) | 1971-09-22 |
| FR2020985A1 (en) | 1970-07-17 |
| NL6915287A (en) | 1970-04-21 |
| CH497082A (en) | 1970-09-30 |
| FR2021001B1 (en) | 1973-03-16 |
| DE1803741A1 (en) | 1970-07-30 |
| SE361376B (en) | 1973-10-29 |
| BE740370A (en) | 1970-04-01 |
| JPS4932083B1 (en) | 1974-08-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| GB1268265A (en) | Power converter circuits | |
| US3700925A (en) | Thyristor tap changer for electrical inductive apparatus | |
| IE37568B1 (en) | Improvements in or relating to hybrid switching devices for alternating currents | |
| GB1236505A (en) | On-load tap-changing arrangement for star-point connection to tapped transformers or chokes | |
| US3302093A (en) | Electric frequency changers | |
| GB1244358A (en) | Improvements in on-load tap-changing arrangements for three phase transformers | |
| SU688969A1 (en) | Single-phase to three-phase voltage converter | |
| SU517103A1 (en) | Device for earthing neutral shunt reactors of power lines | |
| SU445962A1 (en) | DC injection | |
| SU955448A1 (en) | Inverter | |
| SU572871A1 (en) | Ac high-voltage substation | |
| SU758285A1 (en) | Device for arc-proof switching of current | |
| SU1064483A1 (en) | Power supply device for two three-phase electric-arc furnaces | |
| SU1241206A1 (en) | A.c.voltage stabilizer | |
| SU494831A1 (en) | Three phase inverter | |
| SU145925A1 (en) | Mechanical (contact) DC / AC converter | |
| SU1130997A1 (en) | Three-phase current inverter | |
| SU942176A1 (en) | Three-rhase device for switching-over taps in the neutral of power transformer | |
| SU1094024A1 (en) | Device for adjusting three-phase voltage | |
| SU493872A1 (en) | Single Phase Voltage to Three Phase Converter | |
| SU1065832A1 (en) | A.c. voltage stabilizer | |
| SU959053A1 (en) | Three-phase voltage regulating device | |
| SU1697224A1 (en) | A c/a c voltage converter | |
| GB1241822A (en) | Transformers | |
| SU726640A1 (en) | Self-sustained inverter |