GB642628A - A circuit breaker with magnetic blow-out for alternating current - Google Patents
A circuit breaker with magnetic blow-out for alternating currentInfo
- Publication number
- GB642628A GB642628A GB14689/48A GB1468948A GB642628A GB 642628 A GB642628 A GB 642628A GB 14689/48 A GB14689/48 A GB 14689/48A GB 1468948 A GB1468948 A GB 1468948A GB 642628 A GB642628 A GB 642628A
- Authority
- GB
- United Kingdom
- Prior art keywords
- arc
- magnet
- field
- centre
- straightening
- 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
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/30—Means for extinguishing or preventing arc between current-carrying parts
- H01H9/44—Means for extinguishing or preventing arc between current-carrying parts using blow-out magnet
Landscapes
- Arc-Extinguishing Devices That Are Switches (AREA)
Abstract
642,628. Arc rupturing in switches. CZECHOSLOVAK METAL & ENGINEERING WORKS, NATIONAL CORPORATION, and ZAJIC, V. May 31, 1948, No. 14689. Convention date, June 12, 1947. [Class 38(v)] In an alternating-current switch having an arc-shoot with deionizing plates (not shown), the field of a main blow-out magnet 9 is delayed in phase behind the field of an auxiliary magnet 3 to cause the straightening of the arc so that it engages all the plates simultaneously. The arc 17 drawn between contacts 1, 2 is initially blown along the arc horns 5, 6 by the magnet 3, the roots of the arc lagging behind the centre of the arc. The centre of the arc, as at 18, comes under the influence of the field of magnet 9 first, and at parts of the A.C. cycle, has its movement opposed by this main field, so that the arc roots may catch up with the centre of the arc so straightening the arc, as at 19. The phase delay of the main blow-out field may be provided by connecting an inductance in. series with the energizing winding of the magnet 9, by providing the magnet 9 with a short-circuited turn on its laminated core or pole shoe, or by the use of a solid core and solid pole shoes for the magnet 9.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CS270967X | 1947-06-12 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB642628A true GB642628A (en) | 1950-09-06 |
Family
ID=5451743
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB14689/48A Expired GB642628A (en) | 1947-06-12 | 1948-05-31 | A circuit breaker with magnetic blow-out for alternating current |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US2554547A (en) |
| CH (1) | CH270967A (en) |
| FR (1) | FR967564A (en) |
| GB (1) | GB642628A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2172434A (en) * | 1985-03-13 | 1986-09-17 | Gen Electric Plc | Circuit breakers |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2828380A (en) * | 1955-03-14 | 1958-03-25 | Westinghouse Electric Corp | Flux phase shifter and high speed closing with contact construction |
| US2901579A (en) * | 1957-09-12 | 1959-08-25 | Gen Electric | Electric circuit breaker |
| US3054876A (en) * | 1958-12-24 | 1962-09-18 | Ite Circuit Breaker Ltd | Magnetic assists for low current arcs |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1511332A (en) * | 1920-11-20 | 1924-10-14 | Westinghouse Electric & Mfg Co | Magnetic damper for electric arcs |
| US2180147A (en) * | 1936-07-21 | 1939-11-14 | Gen Electric | Electric circuit interrupter |
| US2381637A (en) * | 1942-04-09 | 1945-08-07 | Ite Circuit Breaker Ltd | Arc quencher |
-
1948
- 1948-05-29 US US30036A patent/US2554547A/en not_active Expired - Lifetime
- 1948-05-31 GB GB14689/48A patent/GB642628A/en not_active Expired
- 1948-06-11 CH CH270967D patent/CH270967A/en unknown
- 1948-06-12 FR FR967564D patent/FR967564A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2172434A (en) * | 1985-03-13 | 1986-09-17 | Gen Electric Plc | Circuit breakers |
Also Published As
| Publication number | Publication date |
|---|---|
| US2554547A (en) | 1951-05-29 |
| CH270967A (en) | 1950-09-30 |
| FR967564A (en) | 1950-11-07 |
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