GB813683A - Improvements in and relating to gas-blast electric switchgear - Google Patents
Improvements in and relating to gas-blast electric switchgearInfo
- Publication number
- GB813683A GB813683A GB334455A GB334455A GB813683A GB 813683 A GB813683 A GB 813683A GB 334455 A GB334455 A GB 334455A GB 334455 A GB334455 A GB 334455A GB 813683 A GB813683 A GB 813683A
- Authority
- GB
- United Kingdom
- Prior art keywords
- contact
- gas
- bore
- housing
- blast
- 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
- 239000000523 sample Substances 0.000 abstract 1
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
813,683. Gas-blast switches. ENGLISH ELECTRIC CO. Ltd. Feb. 3, 1956 (Feb. 4, 1965], No. 3344/55. Class 38 (5). A circuit-breaker com. prises a tubular fixed contact 3 and a movable tubular contact 2 mounted in an insulating housing 1 to which pressure gas may be applied at the lower end from an air receiver and valve (Fig. 3, not shown). The gas flow is indicated by the arrows and raises the contact 2 by piston action, the arc formed at 10 being transferred to an arc probe 4 situated in the contact 2. The upper end of the contact 3 is tapered and the adjacent part of the inner wall of the housing 1 is constricted so that the blast in the annular passage 6 is directed into the bore 7. The dimensions of the contact 3 are such that between # and “ of the gas passing upwards to the arc region flows through the bore 5. The contact 2 has a constriction at its lower end and the dimensions are preferably such that the exhaust passes in approximately equal amounts through the bore 7 and annular passage 8. A spring (Fig. 3, not shown) restores the contact 2. For very high voltages the contacts may be immersed in compressed air, in which case the breaker is controlled by an exhaust valve mounted at the opposite end of the housing 1 to which the air receiver is connected.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB813683A true GB813683A (en) | 1959-05-21 |
Family
ID=1627651
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB334455A Expired GB813683A (en) | 1955-02-04 | Improvements in and relating to gas-blast electric switchgear |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB813683A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2177804A2 (en) * | 1972-02-22 | 1973-11-09 | Siemens Ag |
-
1955
- 1955-02-04 GB GB334455A patent/GB813683A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2177804A2 (en) * | 1972-02-22 | 1973-11-09 | Siemens Ag |
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