GB691168A - Improvements relating to air-blast switches - Google Patents
Improvements relating to air-blast switchesInfo
- Publication number
- GB691168A GB691168A GB13420/52A GB1342052A GB691168A GB 691168 A GB691168 A GB 691168A GB 13420/52 A GB13420/52 A GB 13420/52A GB 1342052 A GB1342052 A GB 1342052A GB 691168 A GB691168 A GB 691168A
- Authority
- GB
- United Kingdom
- Prior art keywords
- air
- contact
- piston
- contacts
- nozzle
- 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
- H01H33/16—Impedances connected with contacts
-
- 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
Landscapes
- Circuit Breakers (AREA)
- Arc-Extinguishing Devices That Are Switches (AREA)
- Switches Operated By Changes In Physical Conditions (AREA)
Abstract
691,168. Air-blast switches. CZECHOSLOVAK HEAVY ENGINEERING WORKS, NATIONAL CORPORATION, and GROSSE, V. May 14, 1948 [May 15, 1947], No. 13420/52. Class 38 (v) In an air-blast switch having main interrupting contacts 1, 2, parallel-connected auxiliary spark-gap electrodes 3, 4 with a series resistor 5, and a pneumatically-operated disconnecting switch 6, the application of compressed air to the arc chamber 8 of the electrodes 3, 4 is delayed with respect to the opening of the contacts 1, 2, and a valve 47, 48 controlled by air from the chamber 8 is used to close the outlet from the arc chamber 7 of the main contacts. The valve comprises a disc 47 mounted on sleeve 55 on a piston 46, the parts 47, 55, 46 being slidable on a fixed arc electrode 42 and the disc 47 co-operating with a valve seat 48 formed within the nozzle contact 2. The switch is opened on the application of compressed air through a hollow supporting insulator 11. The air pressure acting on a piston 56, Fig. 2, moves the piston 56 down against the bias of a spring 9 to separate the contact 1 from the nozzle contact 2. The piston 56, when the contacts 1, 2 are fully open, uncovers a port, admitting air to a pipe 58, air then passing through a spiral delay pipe 16 to the chamber 8. Air passing through an insulating nozzle 25 extinguishes the arc between the electrodes 3, 4 and air flowing through the annular space 53 around the nozzle 25 enters a pipe 21 from which air is supplied to a cylinder 44 to move the piston 46 to close the valve 47, 48 so shutting off the blast through the nozzle contact 2 and maintaining the contacts 1, 2 open under pressure. Air from the pipe 21 also enters a cylinder 22 to open the isolator, 6 the blade of the isolator moving out off engagement with a fixed contact (not shown) down into a slot formed in a gas cooler 32, as shown. Conductivity between the moving contact 1 and its holder 15 is maintained by a helical spring ring 64 disposed around an extension 61 of the contact and between conical surfaces of a disc 63 and the holder 15, the spring 9 acting on the disc 63.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CS276833X | 1947-05-15 | ||
CS210448X | 1948-04-21 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB691168A true GB691168A (en) | 1953-05-06 |
Family
ID=25746721
Family Applications (5)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB13344/48A Expired GB681985A (en) | 1947-05-15 | 1948-05-14 | Improvements relating to air-blast switches |
GB11086/51A Expired GB691154A (en) | 1947-05-15 | 1948-05-14 | Improvements relating to air-blast switches |
GB13420/52A Expired GB691168A (en) | 1947-05-15 | 1948-05-14 | Improvements relating to air-blast switches |
GB11087/51A Expired GB682053A (en) | 1947-05-15 | 1948-05-14 | Improvements relating to air-blast switches |
GB13421/52A Expired GB691169A (en) | 1947-05-15 | 1948-05-14 | Improvements relating to air-blast switches |
Family Applications Before (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB13344/48A Expired GB681985A (en) | 1947-05-15 | 1948-05-14 | Improvements relating to air-blast switches |
GB11086/51A Expired GB691154A (en) | 1947-05-15 | 1948-05-14 | Improvements relating to air-blast switches |
Family Applications After (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB11087/51A Expired GB682053A (en) | 1947-05-15 | 1948-05-14 | Improvements relating to air-blast switches |
GB13421/52A Expired GB691169A (en) | 1947-05-15 | 1948-05-14 | Improvements relating to air-blast switches |
Country Status (3)
Country | Link |
---|---|
CH (1) | CH276833A (en) |
FR (1) | FR966489A (en) |
GB (5) | GB681985A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1025485B (en) * | 1954-11-24 | 1958-03-06 | British Thomson Houston Co Ltd | Electric pressure gas switch |
DE1040115B (en) * | 1953-07-08 | 1958-10-02 | Reyrolle A & Co Ltd | Arrangement for switching off line networks or power supply units |
DE1059532B (en) * | 1957-11-18 | 1959-06-18 | Bbc Brown Boveri & Cie | Compressed air switch with resistors |
DE1168994B (en) * | 1957-07-01 | 1964-04-30 | Associated Electrical Ind Rugb | Contact drive for electrical pressure gas switch |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB806232A (en) * | 1956-04-14 | 1958-12-23 | Asea Ab | Improvements in electric air blast circuit breakers |
-
1948
- 1948-05-11 CH CH276833D patent/CH276833A/en unknown
- 1948-05-14 GB GB13344/48A patent/GB681985A/en not_active Expired
- 1948-05-14 GB GB11086/51A patent/GB691154A/en not_active Expired
- 1948-05-14 GB GB13420/52A patent/GB691168A/en not_active Expired
- 1948-05-14 GB GB11087/51A patent/GB682053A/en not_active Expired
- 1948-05-14 FR FR966489D patent/FR966489A/en not_active Expired
- 1948-05-14 GB GB13421/52A patent/GB691169A/en not_active Expired
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1040115B (en) * | 1953-07-08 | 1958-10-02 | Reyrolle A & Co Ltd | Arrangement for switching off line networks or power supply units |
DE1025485B (en) * | 1954-11-24 | 1958-03-06 | British Thomson Houston Co Ltd | Electric pressure gas switch |
DE1168994B (en) * | 1957-07-01 | 1964-04-30 | Associated Electrical Ind Rugb | Contact drive for electrical pressure gas switch |
DE1201893B (en) * | 1957-07-01 | 1965-09-30 | Associated Electrical Ind Rugb | Electric pressure gas switch |
DE1059532B (en) * | 1957-11-18 | 1959-06-18 | Bbc Brown Boveri & Cie | Compressed air switch with resistors |
Also Published As
Publication number | Publication date |
---|---|
GB691169A (en) | 1953-05-06 |
GB682053A (en) | 1952-11-05 |
FR966489A (en) | 1950-10-11 |
GB681985A (en) | 1952-11-05 |
CH276833A (en) | 1951-07-31 |
GB691154A (en) | 1953-05-06 |
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