GB831239A - Gas blast electric circuit interrupters - Google Patents
Gas blast electric circuit interruptersInfo
- Publication number
- GB831239A GB831239A GB26711/57A GB2671157A GB831239A GB 831239 A GB831239 A GB 831239A GB 26711/57 A GB26711/57 A GB 26711/57A GB 2671157 A GB2671157 A GB 2671157A GB 831239 A GB831239 A GB 831239A
- Authority
- GB
- United Kingdom
- Prior art keywords
- contact
- pressure
- gas
- arc
- vents
- 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
- H01H33/70—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid
- H01H33/7015—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid characterised by flow directing elements associated with contacts
- H01H33/7038—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid characterised by flow directing elements associated with contacts characterised by a conducting tubular gas flow enhancing nozzle
Abstract
831,239. High-tension switches. CANADIAN WESTINGHOUSE CO. Ltd. Aug. 23, 1957, No. 26711/57. Class 38 (5). In a gas blast circuitbreaker in which the gas also produces the opening movement of the movable contact, the arrangement is such that the contacts do not open until adequate pressure for arc - extinction is available and then remain open notwithstanding variations in pressure due to the arc. The parts shown are enclosed in a pressure-gas-chamber and comprise the hollow movable contact 2 blocked in the closed position by the fixed contact 1. When the passage 3 is vented to the atmosphere the contact 2 is moved if the gas pressure on the annular top 6 of the contact 2 is sufficient to overcome the spring 12. After a short contact movement an annular piston 8 on the contact 2 closes vents 15 so that the space between the contact 2 and a cylinder 9 is cut-off from the gas supply. Also vents 16, 17 come into line so that the space is open to the atmosphere and the gas pressure also acts on the piston 8 to increase the speed of contact travel. In the fully-open position the vents 16, 17 move out of register so that the pressure cylinder 9 is unaffected by pressure changes in the passage 3 due to the arc. Contacts 14 ensure a low resistance path from the cylinder 9 to the contact 6. Specification 736,090 is referred to.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA353785X | 1956-04-10 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB831239A true GB831239A (en) | 1960-03-23 |
Family
ID=4171459
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB26711/57A Expired GB831239A (en) | 1956-04-10 | 1957-08-23 | Gas blast electric circuit interrupters |
Country Status (5)
| Country | Link |
|---|---|
| BE (1) | BE559510A (en) |
| CH (1) | CH353785A (en) |
| DE (1) | DE1071190B (en) |
| FR (1) | FR1186251A (en) |
| GB (1) | GB831239A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0642347B2 (en) * | 1981-11-12 | 1994-06-01 | 三菱電機株式会社 | Switchgear |
-
0
- DE DENDAT1071190D patent/DE1071190B/de active Pending
-
1957
- 1957-04-08 CH CH353785D patent/CH353785A/en unknown
- 1957-07-18 FR FR1186251D patent/FR1186251A/en not_active Expired
- 1957-07-24 BE BE559510D patent/BE559510A/xx unknown
- 1957-08-23 GB GB26711/57A patent/GB831239A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| BE559510A (en) | 1957-08-14 |
| CH353785A (en) | 1961-04-30 |
| DE1071190B (en) | |
| FR1186251A (en) | 1959-08-19 |
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