GB235960A - Improvements in and relating to electric cut-out switches - Google Patents
Improvements in and relating to electric cut-out switchesInfo
- Publication number
- GB235960A GB235960A GB782424A GB782424A GB235960A GB 235960 A GB235960 A GB 235960A GB 782424 A GB782424 A GB 782424A GB 782424 A GB782424 A GB 782424A GB 235960 A GB235960 A GB 235960A
- Authority
- GB
- United Kingdom
- Prior art keywords
- shield
- coil
- relating
- spark
- coils
- 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
235,960. English Electric Co., Ltd., and Zweigbergk, T. March 27, 1924. Magnetic blow-outs comprise two coils 1, 2 mounted on the same core 7, the coil 2 being in series with the contacts 12 of the circuitbreaker when the latter is closed, and the coil 1 being connected at one end to the coil 2 and at the other end to a body such as a metallic shield 5, so that it is only energized when the circuit - breaker opens and a spark is formed between the auxiliary contact 16 and the shield 5. The current then passes through both coils in series, or, according to a modification, in parallel, producing a strong blow-out field between pole-pieces S which blows the arc around 'the shield. A second spark which may form between the shield 5 and the fixed contact 13 is blown out along an arc-shoot 15.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB782424A GB235960A (en) | 1924-03-27 | 1924-03-27 | Improvements in and relating to electric cut-out switches |
| FR595488D FR595488A (en) | 1924-03-27 | 1925-03-19 | Improvements in electrical switches |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB782424A GB235960A (en) | 1924-03-27 | 1924-03-27 | Improvements in and relating to electric cut-out switches |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB235960A true GB235960A (en) | 1925-06-29 |
Family
ID=9840452
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB782424A Expired GB235960A (en) | 1924-03-27 | 1924-03-27 | Improvements in and relating to electric cut-out switches |
Country Status (2)
| Country | Link |
|---|---|
| FR (1) | FR595488A (en) |
| GB (1) | GB235960A (en) |
-
1924
- 1924-03-27 GB GB782424A patent/GB235960A/en not_active Expired
-
1925
- 1925-03-19 FR FR595488D patent/FR595488A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR595488A (en) | 1925-10-03 |
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