GB294244A - Improvements in apparatus for extinguishing back ignitions in mercury vapour rectifiers - Google Patents
Improvements in apparatus for extinguishing back ignitions in mercury vapour rectifiersInfo
- Publication number
- GB294244A GB294244A GB20078/28A GB2007828A GB294244A GB 294244 A GB294244 A GB 294244A GB 20078/28 A GB20078/28 A GB 20078/28A GB 2007828 A GB2007828 A GB 2007828A GB 294244 A GB294244 A GB 294244A
- Authority
- GB
- United Kingdom
- Prior art keywords
- switch
- grids
- battery
- negative potential
- ignitions
- 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
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 title abstract 2
- 229910052753 mercury Inorganic materials 0.000 title abstract 2
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)
- Ignition Installations For Internal Combustion Engines (AREA)
Abstract
294,244. Akt.-Ges. Brown, Boveri, et Cie. July 21, 1927, [Convention date]. Vapour apparatus, arrangements of.-In means for extinguishing back ignitions in mercury vapour rectifiers by applying a negative potential to grids associated with the anodes, a glow discharge tube is used to control the operation of a switch in the grid circuits in response to excess current or lack of balance in the load circuit of the rectifier. In the arrangement shown in Fig. 1, excess current in the load circuit, which includes the primary a of a transformer, raises the secondary voltage of that transformer sufficiently to cause a discharge in the tube b thus closing the switch c and applying negative potential from a battery e to the grids f of the rectifier g. In the arrangement shown in Fig. 2, current transformers a<1>, a<2>, a<3> are provided in each line and connected as shown through glow tubes b<1>, b<2>, b<3> and resistances d'. d<2>, d<3> to the energizing coil c of the switch so that in the event of unbalance arising, the coil is energized and the switch passes from the position shown, in which a positive potential is applied to the grids f from a battery e', to the alternative position in which a negative potential is applied to the grids from a battery e<2>. Operation of the switch may be retarded by providing one of the contacts with a resilient extension.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE294244X | 1927-07-21 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB294244A true GB294244A (en) | 1929-01-31 |
Family
ID=6083943
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB20078/28A Expired GB294244A (en) | 1927-07-21 | 1928-07-10 | Improvements in apparatus for extinguishing back ignitions in mercury vapour rectifiers |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB294244A (en) |
-
1928
- 1928-07-10 GB GB20078/28A patent/GB294244A/en not_active Expired
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