NO751917L - - Google Patents
Info
- Publication number
- NO751917L NO751917L NO751917A NO751917A NO751917L NO 751917 L NO751917 L NO 751917L NO 751917 A NO751917 A NO 751917A NO 751917 A NO751917 A NO 751917A NO 751917 L NO751917 L NO 751917L
- Authority
- NO
- Norway
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/04—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for transformers
- H02H7/055—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for transformers for tapped transformers or tap-changing means thereof
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Protection Of Transformers (AREA)
- Keying Circuit Devices (AREA)
- Control Of Electrical Variables (AREA)
- Rectifiers (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19742426638 DE2426638C2 (de) | 1974-06-01 | Anordnung zur Verhinderung von Stufenkurzschlüssen bei Lastumschaltern von Stufentransformatoren mit antiparallel geschalteten Thyristoren |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| NO751917L true NO751917L (fr) | 1975-12-02 |
| NO136165B NO136165B (no) | 1977-04-18 |
| NO136165C NO136165C (no) | 1977-07-27 |
Family
ID=5917102
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NO751917A NO136165C (no) | 1974-06-01 | 1975-05-30 | Anordning for } forhindre trinnkortslutning i belastningsomkoplere for trinntransformatorer. |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US3944913A (fr) |
| JP (1) | JPS512925A (fr) |
| AT (1) | AT340538B (fr) |
| FR (1) | FR2275921A2 (fr) |
| NO (1) | NO136165C (fr) |
| SE (1) | SE399786B (fr) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5166597A (en) * | 1991-08-08 | 1992-11-24 | Electric Power Research Institute | Phase-shifting transformer system |
| US5408171A (en) * | 1991-10-21 | 1995-04-18 | Electric Power Research Institute, Inc. | Combined solid-state and mechanically-switched transformer tap-changer |
| JPH0546777U (ja) * | 1991-11-29 | 1993-06-22 | 積水化成品工業株式会社 | 緩衝材等の発泡体 |
| US5461300A (en) * | 1993-03-30 | 1995-10-24 | Electric Power Research Institute, Inc. | Phase angle regulating transformer with a single core per phase |
| US5548166A (en) * | 1993-12-09 | 1996-08-20 | Long Island Lighting Company | Momentary power outage carryover device |
| US5530338A (en) * | 1995-03-06 | 1996-06-25 | Beckwith; Robert W. | Load tapchanger transformer paralleling by daisy chain comparison of load currents |
| US6078148A (en) * | 1998-10-09 | 2000-06-20 | Relume Corporation | Transformer tap switching power supply for LED traffic signal |
| US6472851B2 (en) | 2000-07-05 | 2002-10-29 | Robicon Corporation | Hybrid tap-changing transformer with full range of control and high resolution |
| US8207716B2 (en) * | 2004-10-14 | 2012-06-26 | Utility Systems Technologies, Inc. | Useful improvements in the art of 3-phase electronic tap changer commutation device |
| US7737667B2 (en) * | 2004-10-14 | 2010-06-15 | Utility Systems Technologies, Inc. | 3-phase electronic tap changer commutation and device |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1438592A1 (de) * | 1961-02-11 | 1969-01-16 | Siemens Ag | Anordnung zur unterbrechungslosen,lichtbogen- und spannungseinbruchsfreien Lastumschaltung bei Stufentransformatoren |
| JPS507727B1 (fr) * | 1969-11-04 | 1975-03-28 | ||
| SE350143B (fr) * | 1971-02-05 | 1972-10-16 | Asea Ab | |
| US3706024A (en) * | 1971-03-29 | 1972-12-12 | Westinghouse Electric Corp | Tap changing apparatus having a gate control tripper |
| DE2207367C2 (de) * | 1972-02-17 | 1974-02-28 | Reinhausen Maschf Scheubeck | Anordnung zur Verhinderung von Stufenkurzschlüssen bei Lastumschaltern von Stufentransformatoren mit antiparallel geschalteten Thyristoren |
-
1975
- 1975-05-19 US US05/579,115 patent/US3944913A/en not_active Expired - Lifetime
- 1975-05-27 SE SE7506012A patent/SE399786B/xx unknown
- 1975-05-30 NO NO751917A patent/NO136165C/no unknown
- 1975-05-30 FR FR7517045A patent/FR2275921A2/fr active Pending
- 1975-05-30 JP JP50064418A patent/JPS512925A/ja active Pending
- 1975-05-30 AT AT410875A patent/AT340538B/de not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| NO136165C (no) | 1977-07-27 |
| AT340538B (de) | 1977-12-27 |
| US3944913A (en) | 1976-03-16 |
| NO136165B (no) | 1977-04-18 |
| DE2426638A1 (fr) | 1975-10-09 |
| SE399786B (sv) | 1978-02-27 |
| JPS512925A (fr) | 1976-01-12 |
| FR2275921A2 (fr) | 1976-01-16 |
| ATA410875A (de) | 1977-04-15 |
| DE2426638B1 (de) | 1975-10-09 |
| SE7506012L (sv) | 1975-12-02 |