GB435961A - Improvements in and relating to liquid break electric switches - Google Patents
Improvements in and relating to liquid break electric switchesInfo
- Publication number
- GB435961A GB435961A GB30629/34A GB3062934A GB435961A GB 435961 A GB435961 A GB 435961A GB 30629/34 A GB30629/34 A GB 30629/34A GB 3062934 A GB3062934 A GB 3062934A GB 435961 A GB435961 A GB 435961A
- Authority
- GB
- United Kingdom
- Prior art keywords
- members
- pressure
- liquid
- contacts
- tank
- 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
- H01H33/04—Means for extinguishing or preventing arc between current-carrying parts
- H01H33/14—Multiple main contacts for the purpose of dividing the current through, or potential drop along, the arc
Landscapes
- Circuit Breakers (AREA)
Abstract
435,961. Oil-break switches. BRITISH THOMSON - HOUSTON CO., Ltd., Crown House, Aldwych, London. Oct. 25, 1934, No. 30629. Convention date, Oct. 26, 1933. [Class 38 (v)] A liquid-break switch comprises a casing containing oil or other arc-extinguishing liquid in which are immersed relatively movable contacts responsive to variations in the pressure of the liquid, the casing having a flexible wall portion co-operating with means exterior of the casing for varying the pressure of the liquid to actuate the contacts. In the form shown, the movable contact structure comprises a number of sealed hollow expansible members 7 made of conducting material, such as copper, each member containing a compressible fluid such as air. The oil pressure within the tank 1 is varied by a flexible wall portion or metallic bellows 10 connected to an operating rod 11 which is latched against the tension of a spring 12 by a latch 13 which co-operates with a tripping solenoid 14. When the latch is tripped, the spring 12 acts on the bellows 10 to increase the pressure within the tank, with consequent collapse of the members 7, to produce a series of breaks between the fixed contacts 3, 4 and contacts 9 carried by the members 7. Return movement and latching of the rod 11 removes the pressure within the tank, whereupon the members 7 expand to close the circuit, the expansion being aided by springs 8. The lateral supports 15 for the fixed and movable contact members are connected by high resistances 17 which form a shunt across the breaks.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US695242A US1990348A (en) | 1933-10-26 | 1933-10-26 | Electric switch |
Publications (1)
Publication Number | Publication Date |
---|---|
GB435961A true GB435961A (en) | 1935-10-02 |
Family
ID=24792208
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB30629/34A Expired GB435961A (en) | 1933-10-26 | 1934-10-25 | Improvements in and relating to liquid break electric switches |
Country Status (3)
Country | Link |
---|---|
US (1) | US1990348A (en) |
DE (1) | DE704534C (en) |
GB (1) | GB435961A (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2163558A (en) * | 1937-04-30 | 1939-06-20 | Westinghouse Electric & Mfg Co | Circuit breaker |
DE767058C (en) * | 1938-05-27 | 1951-08-16 | Brown Ag | Compressed gas switch |
DE750488C (en) * | 1941-11-11 | 1945-01-15 | Resistance switch |
-
1933
- 1933-10-26 US US695242A patent/US1990348A/en not_active Expired - Lifetime
-
1934
- 1934-10-23 DE DEA74386D patent/DE704534C/en not_active Expired
- 1934-10-25 GB GB30629/34A patent/GB435961A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
DE704534C (en) | 1941-04-02 |
US1990348A (en) | 1935-02-05 |
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