GB977152A - Improvements in and relating to the detection of fire-through in mercury arc rectifier and inverter systems - Google Patents
Improvements in and relating to the detection of fire-through in mercury arc rectifier and inverter systemsInfo
- Publication number
- GB977152A GB977152A GB46/60A GB4660A GB977152A GB 977152 A GB977152 A GB 977152A GB 46/60 A GB46/60 A GB 46/60A GB 4660 A GB4660 A GB 4660A GB 977152 A GB977152 A GB 977152A
- Authority
- GB
- United Kingdom
- Prior art keywords
- transistor
- pulse
- signal
- detection
- firethrough
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J13/00—Discharge tubes with liquid-pool cathodes, e.g. metal-vapour rectifying tubes
- H01J13/02—Details
- H01J13/48—Circuit arrangements not adapted to a particular application of the tube and not otherwise provided for
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Other Investigation Or Analysis Of Materials By Electrical Means (AREA)
Abstract
977,152. Converting. ENGLISH ELECTRIC CO. Ltd. Dec. 30, 1960 [Jan. 1, 1960], No. 46/60. Heading H2F. Apparatus for the detection of firethrough in a mercury arc converter when using a broad pulse system comprises a first circuit 21, 22 which generates a signal in delayed response to a control grid pulse, the time delay being in excess of the commutation period of the valve V, a second circuit 20 sensitive to fractionally excessive anode or cathode current, a detector 24 sensitive to the simultaneous occurrence of both the delayed signal and the signal indicating excessive current and relay means for controlling an indicator or protective device in response to the output from the detector. In the arrangement shown, excessive current through the resistor 15 switches off the normally conducting PNP transistor 50. Similarly transistor 31 which also forms part of the misfire detection apparatus is switched off by a grid pulse. The negative output thus produced by transistor 31 is fed to the base of transistor 44 which in conjunction with capacitor 45 extends the pulse duration. The extended pulse is applied to transistor 47 which is switched on and thus prevents a signal from transistor 50 (which if not prevented would indicate firethrough) from reaching the transistor 41. Misfire is detected by circuits 21, 27 and 30 as described in Specification 977,151.
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB46/60A GB977152A (en) | 1960-01-01 | 1960-01-01 | Improvements in and relating to the detection of fire-through in mercury arc rectifier and inverter systems |
| JP5007060A JPS38518B1 (en) | 1960-01-01 | 1960-12-24 | |
| CH1455860A CH389789A (en) | 1960-01-01 | 1960-12-29 | Apparatus for detecting a misfiring in the tube of a mercury vapor converter |
| BE598749A BE598749A (en) | 1960-01-01 | 1961-01-02 | Device for detecting full ignition in rectifying devices and mercury vapor converters |
| JP5007160A JPS4216498B1 (en) | 1960-01-01 | 1970-12-24 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB46/60A GB977152A (en) | 1960-01-01 | 1960-01-01 | Improvements in and relating to the detection of fire-through in mercury arc rectifier and inverter systems |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB977152A true GB977152A (en) | 1964-12-02 |
Family
ID=9697419
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB46/60A Expired GB977152A (en) | 1960-01-01 | 1960-01-01 | Improvements in and relating to the detection of fire-through in mercury arc rectifier and inverter systems |
Country Status (4)
| Country | Link |
|---|---|
| JP (2) | JPS38518B1 (en) |
| BE (1) | BE598749A (en) |
| CH (1) | CH389789A (en) |
| GB (1) | GB977152A (en) |
-
1960
- 1960-01-01 GB GB46/60A patent/GB977152A/en not_active Expired
- 1960-12-24 JP JP5007060A patent/JPS38518B1/ja active Pending
- 1960-12-29 CH CH1455860A patent/CH389789A/en unknown
-
1961
- 1961-01-02 BE BE598749A patent/BE598749A/en unknown
-
1970
- 1970-12-24 JP JP5007160A patent/JPS4216498B1/ja active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| JPS38518B1 (en) | 1963-01-30 |
| JPS4216498B1 (en) | 1967-09-06 |
| BE598749A (en) | 1961-05-02 |
| CH389789A (en) | 1965-03-31 |
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