GB538349A - Improvements in fluid-pressure-operated electric switchgear - Google Patents
Improvements in fluid-pressure-operated electric switchgearInfo
- Publication number
- GB538349A GB538349A GB859140A GB859140A GB538349A GB 538349 A GB538349 A GB 538349A GB 859140 A GB859140 A GB 859140A GB 859140 A GB859140 A GB 859140A GB 538349 A GB538349 A GB 538349A
- Authority
- GB
- United Kingdom
- Prior art keywords
- piston
- blade
- spring
- latch
- fluid
- 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
- Arc-Extinguishing Devices That Are Switches (AREA)
Abstract
538,349. Actuation of switches; gas-blast switches. ENGLISH ELECTRIC CO., Ltd., BLANDFORD, A. R., and ROWLAND, F. G. May 13, 1940, No. 8591. [Class 38 (v)] When the movable contact 2 of a gas-blast switch is separated from a fixed nozzle contact 1 against the action of spring 14, by fluid pressure acting on a piston 4, a port 5a in an adjacent cylinder is opened to admit the pressure beneath a piston 8 which rises and rotates an isolating blade 10 about its pivot 11 into the open position in which it is held by spring clips 19 engaging the crosshead 8b. Contact 2 is also held by a latch 15 which is pivoted at 16 and takes over the piston 4. The latch has a tail 17 pivoted to it at 15a and is deflected, against the action of spring 18 by the projection 10a from blade 10 in the latter's opening movement. The blade is moved to closed position by fluid admitted above piston 8, the piston 4 having a cut-away port 4b to open the space beneath it to atmosphere. The projection 10a engages the tail 17 and moves the latch 15, so allowing spring 14 to close the breaker before the blade closes. Specification 514,804 is referred to.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB859140A GB538349A (en) | 1940-05-13 | 1940-05-13 | Improvements in fluid-pressure-operated electric switchgear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB859140A GB538349A (en) | 1940-05-13 | 1940-05-13 | Improvements in fluid-pressure-operated electric switchgear |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB538349A true GB538349A (en) | 1941-07-30 |
Family
ID=9855427
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB859140A Expired GB538349A (en) | 1940-05-13 | 1940-05-13 | Improvements in fluid-pressure-operated electric switchgear |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB538349A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3179775A (en) * | 1960-12-07 | 1965-04-20 | Westinghouse Electric Corp | Circulating-type compressed-gas circuit interrupters with composite blast-tube extension |
-
1940
- 1940-05-13 GB GB859140A patent/GB538349A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3179775A (en) * | 1960-12-07 | 1965-04-20 | Westinghouse Electric Corp | Circulating-type compressed-gas circuit interrupters with composite blast-tube extension |
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