GB476501A - Improvements in and relating to thermostatic electric switching devices - Google Patents
Improvements in and relating to thermostatic electric switching devicesInfo
- Publication number
- GB476501A GB476501A GB1613436A GB1613436A GB476501A GB 476501 A GB476501 A GB 476501A GB 1613436 A GB1613436 A GB 1613436A GB 1613436 A GB1613436 A GB 1613436A GB 476501 A GB476501 A GB 476501A
- Authority
- GB
- United Kingdom
- Prior art keywords
- rectifier
- tubes
- relating
- current
- switching devices
- 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
- H02H7/1209—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 converters using only discharge tubes
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
Abstract
476,501. Thermal switches; discharge apparatus. BRITISH THOMSON-HOUSTON CO., Ltd., and CARRICK, G. A. June 9, 1936, No. 16134. [Class 38 (v)] [Also in Group XL] A device for protecting air-cooled apparatus such as a rectifier that is cooled by a fan comprises an expansible or vaporizable fluid contained in tubes 3, 4 that carry and are heated by the load current 5. With excessive current a switch 7 is operated closing a circuit 8 to a tripping or controlling device. The device is preferably positioned in the air current between the fan and rectifier so that its temperature is also influenced by the air current and by having two tubes 3, 4 adapted to respond to long and short overloads it has similar thermal characteristics to the rectifier. The tubes 3, 4 may be in series as shown and operate one device, or they may be in parallel and may operate separate controlling mechanisms.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1613436A GB476501A (en) | 1936-06-09 | 1936-06-09 | Improvements in and relating to thermostatic electric switching devices |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1613436A GB476501A (en) | 1936-06-09 | 1936-06-09 | Improvements in and relating to thermostatic electric switching devices |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB476501A true GB476501A (en) | 1937-12-09 |
Family
ID=10071790
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1613436A Expired GB476501A (en) | 1936-06-09 | 1936-06-09 | Improvements in and relating to thermostatic electric switching devices |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB476501A (en) |
-
1936
- 1936-06-09 GB GB1613436A patent/GB476501A/en not_active Expired
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