GB390914A - Improvements in and relating to vapour electric discharge rectifiers - Google Patents
Improvements in and relating to vapour electric discharge rectifiersInfo
- Publication number
- GB390914A GB390914A GB3143/32A GB314332A GB390914A GB 390914 A GB390914 A GB 390914A GB 3143/32 A GB3143/32 A GB 3143/32A GB 314332 A GB314332 A GB 314332A GB 390914 A GB390914 A GB 390914A
- Authority
- GB
- United Kingdom
- Prior art keywords
- cathode
- grid control
- supply
- control transformer
- primary
- 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)
- Emergency Protection Circuit Devices (AREA)
- Ignition Installations For Internal Combustion Engines (AREA)
- Ac-Ac Conversion (AREA)
Abstract
390,914. Rectifying alternating currents. AKT.-GES. BROWN, BOVERI, ET CLE, Baden, Switzerland. Feb. 2, 1932, No. 3143. Convention date, Feb. 2, 1931. [Class 38 (ii).] In and for back ignition and short circuit protection arrangements for mercury-vapour rectifiers provided with means for facilitating ignition of the anodes, a change-over device is provided on the primary side of the normal grid control transformer. In one arrangement the grid control transformer has two primaries displaced 180‹ with respect to one another and a back ignition or short circuit responsive relay changes over the connection of the A.C. supply from one primary to the other. A six-phase rectifier is illustrated as supplied from three phase mains and the star point of the secondary of the grid control transformer is connected through a variable D.C. supply to the cathode so that control of the D.C. output is obtained. The primary of the grid control transformer may be either star or delta connected. In a modification, Fig. 2, in the event of back ignition or short circuit the primary 4 of the grid control transformer is disconnected by relay 10 and short-circuited so that the steady negative bias of the series D.C. supply 16 in the connection to the cathode 3 is rendered effective on all the grids. The Specification as open to inspection under Sect. 91 disclosed arrangements in which the protective relay charged over connections in the star point connection of the secondary of the grid transformer to the cathode whereby a swamping D.C. negative bias was inserted .under emergency conditions. The D.C. supply may be obtained from a battery.or a resistance connected as a potential divider in the cathode to anode circuit. This subject-matter does not appear in the Specification as accepted.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE390914X | 1931-02-02 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB390914A true GB390914A (en) | 1933-04-20 |
Family
ID=6376794
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3143/32A Expired GB390914A (en) | 1931-02-02 | 1932-02-02 | Improvements in and relating to vapour electric discharge rectifiers |
Country Status (2)
| Country | Link |
|---|---|
| FR (1) | FR390914A (en) |
| GB (1) | GB390914A (en) |
-
1908
- 1908-06-05 FR FR390914A patent/FR390914A/en not_active Expired
-
1932
- 1932-02-02 GB GB3143/32A patent/GB390914A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR390914A (en) | 1908-10-17 |
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