GB542894A - Improvements in electric circuit-interrupting systems - Google Patents
Improvements in electric circuit-interrupting systemsInfo
- Publication number
- GB542894A GB542894A GB2599/41A GB259941A GB542894A GB 542894 A GB542894 A GB 542894A GB 2599/41 A GB2599/41 A GB 2599/41A GB 259941 A GB259941 A GB 259941A GB 542894 A GB542894 A GB 542894A
- Authority
- GB
- United Kingdom
- Prior art keywords
- circuit
- breaker
- fluid
- switch
- feb
- 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
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/02—Details
- H01H33/28—Power arrangements internal to the switch for operating the driving mechanism
- H01H33/30—Power arrangements internal to the switch for operating the driving mechanism using fluid actuator
- H01H33/32—Power arrangements internal to the switch for operating the driving mechanism using fluid actuator pneumatic
Landscapes
- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
- Circuit Breakers (AREA)
Abstract
542,894. Actuation of switches. BRITISH THOMSON-HOUSTON CO., Ltd. Feb. 26, 1941, No: 2599. Convention date, Feb. 28, 1940. [Class 38 (v)] A circuit-interrupting system comprises a fluid-actuated circuit-breaker and a normallyinoperative second interrupting device in the circuit, means responsive to an abnormal decrease in the pressure of the fluid-source rendering the second device operative to interrupt the circuit. The circuit-breaker 10 is arranged as in Specification 544,017, with an arcextinguishing fluid-blast admitted through valve 28 and conduit 16 from the source 27, which operates the movable contact through the crosshead 25, shaft 22, and motor 18, 19 to which fluid is admitted through pipes 32, 33 under control of a valve 31 and opening and closing solenoids 36, 37. If the pressure in reservoir 27 falls unduly, a switch 44 closes the circuit to a coil 43 which removes latch 42 and allows spring 41 to open an air-break switch 40, so opening a shunt-circuit to a fusible cut-out 38 which is of a rupturing capacity comparable with that of the circuit-breaker 10. The latter has backcontacts 48 which open when the breaker 10 opens, and the circuit of coil 43 is also adopted to be opened by back-contacts 49 of the switch 40.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US321235A US2250217A (en) | 1940-02-28 | 1940-02-28 | Circuit-interrupting system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB542894A true GB542894A (en) | 1942-01-30 |
Family
ID=23249758
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2599/41A Expired GB542894A (en) | 1940-02-28 | 1941-02-26 | Improvements in electric circuit-interrupting systems |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US2250217A (en) |
| DE (1) | DE928657C (en) |
| GB (1) | GB542894A (en) |
-
1940
- 1940-02-28 US US321235A patent/US2250217A/en not_active Expired - Lifetime
-
1941
- 1941-02-26 DE DEA19146D patent/DE928657C/en not_active Expired
- 1941-02-26 GB GB2599/41A patent/GB542894A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DE928657C (en) | 1955-06-06 |
| US2250217A (en) | 1941-07-22 |
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