GB810847A - Improvements in or relating to electrical switch means for direct or alternating current - Google Patents
Improvements in or relating to electrical switch means for direct or alternating currentInfo
- Publication number
- GB810847A GB810847A GB21191/56A GB2119156A GB810847A GB 810847 A GB810847 A GB 810847A GB 21191/56 A GB21191/56 A GB 21191/56A GB 2119156 A GB2119156 A GB 2119156A GB 810847 A GB810847 A GB 810847A
- Authority
- GB
- United Kingdom
- Prior art keywords
- circuit
- switch
- ignition
- interrupting means
- transformer
- 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
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H39/00—Switching devices actuated by an explosion produced within the device and initiated by an electric current
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H83/00—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/02—Details
- H02H3/021—Details concerning the disconnection itself, e.g. at a particular instant, particularly at zero value of current, disconnection in a predetermined order
Landscapes
- Ignition Installations For Internal Combustion Engines (AREA)
Abstract
810,847. Protective cut-out arrangements. CALOR-EMAG. ELEKTRIZITATS A.G. July 9, 1956 [July 21, 1955], No. 21191/56. Class 38 (5). A switching arrangement comprises a switch 1 adapted solely for the interruption of normal load currents and an interrupting means 2 in series therewith adapted for response to overload or short-circuit currents, the interrupting means being actuated by the ignition of an explosive substance when the rate of rise of current through the arrangement reaches a predetermined value. In the arrangement shown, the interrupting means 2 includes a switch, indicated at 10, in which a member holding the switch closed is broken by means of an explosive which is ignited by an ignition wire 5. The ignition circuit shown in Fig. 2 includes a transformer 3, a choke 7, an auxiliary transformer 4, a spark gap 8, a three-electrode spark gap 9 and a charged condenser 6. The choke 7 or a resistance (not shown) is adjusted so that when the rate of rise of current in the protected A.C. or D.C. circuit reaches the predetermined value, the spark gaps " fire " and the condenser 6 discharges through the wire 5 to ignite the explosive substance. A magnetic blow-out fuse may be arranged in parallel with the switch 10. A plurality of interrupting means may be arranged in series, the times of response of their ignition circuits being graduated. Should the protected circuit be a D.C. circuit then the transformer 3 may be given a bias magnetization.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE810847X | 1955-07-21 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB810847A true GB810847A (en) | 1959-03-25 |
Family
ID=6725974
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB21191/56A Expired GB810847A (en) | 1955-07-21 | 1956-07-09 | Improvements in or relating to electrical switch means for direct or alternating current |
Country Status (2)
| Country | Link |
|---|---|
| BE (1) | BE547774A (en) |
| GB (1) | GB810847A (en) |
-
0
- BE BE547774D patent/BE547774A/xx unknown
-
1956
- 1956-07-09 GB GB21191/56A patent/GB810847A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| BE547774A (en) |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| GB880238A (en) | Protective arrangements for electric circuits and apparatus | |
| GB1236082A (en) | A system of overload protection by using superconducting conductors | |
| GB1133398A (en) | Electric protective circuit | |
| GB869351A (en) | Selective trip arrangement utilizing circuit breakers which are coordinated with current limiting fuses | |
| GB562745A (en) | Improvements in automatic electric circuit breaking devices | |
| GB1566289A (en) | Saturating transformer for overcurrent protection | |
| GB810847A (en) | Improvements in or relating to electrical switch means for direct or alternating current | |
| GB1472412A (en) | Circuit interrupter | |
| GB840907A (en) | Improvements in or relating to quick-acting cut-out devices | |
| GB929008A (en) | Improved means for indicating faults in the crucible or heating chamber of an electric induction heating furnace | |
| ES330090A1 (en) | An electrical switch device (Machine-translation by Google Translate, not legally binding) | |
| GB1208208A (en) | Electrical earth-leakage circuit-breakers | |
| US3249811A (en) | Constant voltage source for operation of series capacitor bank protective equipment | |
| GB981892A (en) | Earth fault circuit-breaker | |
| ES303000A1 (en) | A protective system for an electric inductive apparatus that has crowding, such as a transformer. (Machine-translation by Google Translate, not legally binding) | |
| GB833364A (en) | Improvements in and relating to high voltage current transformers | |
| GB644489A (en) | Improvements in or relating to air-blast electric circuit breakers | |
| GB633543A (en) | Improvements in or relating to protective arrangements for electric circuits | |
| GB964037A (en) | Improvements in or relating to earth fault protective switches | |
| GB1212419A (en) | Improvements relating to electrical protective arrangements | |
| GB950183A (en) | Improvements in and relating to electrical circuits employing transistor networks | |
| GB866183A (en) | Electro-dynamic quick-break protective device | |
| GB817878A (en) | Improvements relating to earth fault protection for electrical equipment | |
| GB909720A (en) | Improvements in or relating to ignition and excitation arrangements for single anodemetal-vapour discharge valves | |
| ES332733A1 (en) | Protective apparatus combining a differential magnetotermic switch fuse high interruption power. (Machine-translation by Google Translate, not legally binding) |