GB521920A - Improvements in or relating to the protection of direct current electric supply systems - Google Patents
Improvements in or relating to the protection of direct current electric supply systemsInfo
- Publication number
- GB521920A GB521920A GB3460938A GB3460938A GB521920A GB 521920 A GB521920 A GB 521920A GB 3460938 A GB3460938 A GB 3460938A GB 3460938 A GB3460938 A GB 3460938A GB 521920 A GB521920 A GB 521920A
- Authority
- GB
- United Kingdom
- Prior art keywords
- load
- relating
- protection
- direct current
- electric supply
- 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
- 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
- H02H7/10—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 converters; for rectifiers
- H02H7/12—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 converters; for rectifiers for static converters or rectifiers
- H02H7/125—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 converters; for rectifiers for static converters or rectifiers for rectifiers
- H02H7/127—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 converters; for rectifiers for static converters or rectifiers for rectifiers having auxiliary control electrode to which blocking control voltages or currents are applied in case of emergency
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Secondary Cells (AREA)
Abstract
521,920. Converting. GENERAL ELECTRIC CO., Ltd., and THOMPSON, W. G. Nov. 28, 1938, No. 34609. [Class 38 (ii)] A D.C. load 1 is supplied from an A.C. source 2 through a converter 3, and excess voltage across the load 1 due to regeneration is prevented by connecting resistances 17 across the load 1 by means of a grid-controlled converter 20. Grids 23, normally negatively biased by battery 26, are successively made positive upon the occurrence of over-voltage across the load by potentiometers 28. The discharge to one or more of the anodes 19 is extinguished by it being communated to an auxiliary electrode 30 energized with A.C. The grid 34, associated with the electrode 30, is controlled according to cathode currents of the converters 3, 20 by a saturated transformer structure 16 energized from an A.C. supply 46.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3460938A GB521920A (en) | 1938-11-28 | 1938-11-28 | Improvements in or relating to the protection of direct current electric supply systems |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3460938A GB521920A (en) | 1938-11-28 | 1938-11-28 | Improvements in or relating to the protection of direct current electric supply systems |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB521920A true GB521920A (en) | 1940-06-04 |
Family
ID=10367786
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3460938A Expired GB521920A (en) | 1938-11-28 | 1938-11-28 | Improvements in or relating to the protection of direct current electric supply systems |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB521920A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008049463A1 (en) * | 2006-10-27 | 2008-05-02 | Oerlikon Trading Ag, Trübbach | Method and apparatus for manufacturing cleaned substrates or clean substrates which are further processed |
| CN106877065A (en) * | 2017-01-23 | 2017-06-20 | 苏州丰年科技股份有限公司 | A kind of dustproof cover structure of connector |
-
1938
- 1938-11-28 GB GB3460938A patent/GB521920A/en not_active Expired
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008049463A1 (en) * | 2006-10-27 | 2008-05-02 | Oerlikon Trading Ag, Trübbach | Method and apparatus for manufacturing cleaned substrates or clean substrates which are further processed |
| EP2158977A1 (en) * | 2006-10-27 | 2010-03-03 | Oerlikon Trading AG, Trübbach | Method and apparatus for manufacturing cleaned substrates or clean substrates which are further processed |
| US10418230B2 (en) | 2006-10-27 | 2019-09-17 | Oerlikon Trading Ag, Truebbach | Method and apparatus for manufacturing cleaned substrates or clean substrates which are further processed |
| CN106877065A (en) * | 2017-01-23 | 2017-06-20 | 苏州丰年科技股份有限公司 | A kind of dustproof cover structure of connector |
| CN106877065B (en) * | 2017-01-23 | 2023-09-12 | 苏州丰年科技股份有限公司 | Dustproof cover structure of connector |
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