GB977151A - Improvements in and relating to the detection of mis-fire in mercury arc rectifier and inverter systems - Google Patents
Improvements in and relating to the detection of mis-fire in mercury arc rectifier and inverter systemsInfo
- Publication number
- GB977151A GB977151A GB4560A GB4560A GB977151A GB 977151 A GB977151 A GB 977151A GB 4560 A GB4560 A GB 4560A GB 4560 A GB4560 A GB 4560A GB 977151 A GB977151 A GB 977151A
- Authority
- GB
- United Kingdom
- Prior art keywords
- circuit
- responsive
- valve
- detection
- normal
- 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)
- Ignition Installations For Internal Combustion Engines (AREA)
Abstract
977,151. Converting. ENGLISH ELECTRIC CO. Ltd. Dec. 30, 1960 [Jan. 1, 1960], No. 45/60. Heading H2F. Apparatus for the detection of misfire in a mercury arc converter comprises a first circuit 22 responsive to an increase in magnitude of the anode to cathode voltage of the valve V relative to the normal, a second circuit 21 responsive to a more positive than normal grid firing voltage, detection means 23 responsive to the simultaneous occurrence of both abnormal voltages and a time delay relay 24 operated by the detector signal for controlling an indicator or protective device when the abnormal operating conditions are sustained for a period in excess of the normal firing delay of the valve V. In the arrangement shown, the first and second circuits 22, 21 each comprising a grounded emitter PNP transistor which is normally conducting and which are switched off when the respective abnormal voltages are present in the valve V. The detector 23 comprises a rectifier 30 which passes an input to the delay relay 24 when both transistors are switched off. The PNP transistor 31 conducts when the input signal is received, the delay being obtained by the capacitor 33. The circuit 24 may operate an electromagnetic counter or a bi-stable circuit requiring manual reset. The device is suitable for detecting true misfire in converters operating on either a broad or narrow pulse system. Specification 977,152 is referred to.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB4560A GB977151A (en) | 1960-01-01 | 1960-01-01 | Improvements in and relating to the detection of mis-fire in mercury arc rectifier and inverter systems |
| CH1455760A CH385356A (en) | 1960-01-01 | 1960-12-29 | Apparatus for detecting a misfire in the tube of a mercury vapor converter |
| BE598748A BE598748A (en) | 1960-01-01 | 1961-01-02 | Apparatus for detecting starting faults in rectifier and mercury vapor converter installations |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB4560A GB977151A (en) | 1960-01-01 | 1960-01-01 | Improvements in and relating to the detection of mis-fire in mercury arc rectifier and inverter systems |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB977151A true GB977151A (en) | 1964-12-02 |
Family
ID=9697399
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB4560A Expired GB977151A (en) | 1960-01-01 | 1960-01-01 | Improvements in and relating to the detection of mis-fire in mercury arc rectifier and inverter systems |
Country Status (3)
| Country | Link |
|---|---|
| BE (1) | BE598748A (en) |
| CH (1) | CH385356A (en) |
| GB (1) | GB977151A (en) |
-
1960
- 1960-01-01 GB GB4560A patent/GB977151A/en not_active Expired
- 1960-12-29 CH CH1455760A patent/CH385356A/en unknown
-
1961
- 1961-01-02 BE BE598748A patent/BE598748A/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| CH385356A (en) | 1964-12-15 |
| BE598748A (en) | 1961-05-02 |
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