GB356468A - Improvements in or relating to electric switches with arc extinction by self-generated vapour pressure - Google Patents
Improvements in or relating to electric switches with arc extinction by self-generated vapour pressureInfo
- Publication number
- GB356468A GB356468A GB26200/30A GB2620030A GB356468A GB 356468 A GB356468 A GB 356468A GB 26200/30 A GB26200/30 A GB 26200/30A GB 2620030 A GB2620030 A GB 2620030A GB 356468 A GB356468 A GB 356468A
- Authority
- GB
- United Kingdom
- Prior art keywords
- liquid
- switching
- vapour pressure
- expansion
- break
- 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
- H01H33/161—Variable impedances
- H01H33/162—Liquid resistors
Landscapes
- Circuit Breakers (AREA)
- Devices For Dispensing Beverages (AREA)
Abstract
356,468. High - tension switches. SIEMENS - SCHUCKERTWERKE AKT.- GES., Siemensstadt, Berlin. Sept. 2, 1930, No. 26200. Convention date, Nov. 22, 1929. [Class 38 (v).] Expansion switches in which the arc at break is extinguished by the sudden expansion of selfgenerated vapour pressure, as described in Specification 354,890, employ a resistance liquid, for example soda solution as the switching liquid so that in the switching-in movement the resistance of the liquid is inserted in the circuit before the contacts 3, 4 come together. In the arrangement shown in which the walls 1 of the expansion chamber are of conducting material, the fixed contact is surrounded by an insulating cylinder 9 which isolates a portion of the switching liquid. Small holes 10 in the lower part of the cylinder ensure that the levels of liquid, inside and outside are the same. An external glass tube n serves to indicate the height of the switching liquid. In the form shown, the pressure is built up in the switching chamber, at break, until suddenly released by the automatic opening of the valve 8.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE356468X | 1929-11-22 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB356468A true GB356468A (en) | 1931-09-10 |
Family
ID=6290283
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB26200/30A Expired GB356468A (en) | 1929-11-22 | 1930-09-02 | Improvements in or relating to electric switches with arc extinction by self-generated vapour pressure |
Country Status (4)
| Country | Link |
|---|---|
| BE (1) | BE373239A (en) |
| FR (1) | FR702225A (en) |
| GB (1) | GB356468A (en) |
| NL (1) | NL32441C (en) |
-
0
- NL NL32441D patent/NL32441C/xx active
- BE BE373239D patent/BE373239A/xx unknown
-
1930
- 1930-09-02 GB GB26200/30A patent/GB356468A/en not_active Expired
- 1930-09-05 FR FR702225D patent/FR702225A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| NL32441C (en) | |
| BE373239A (en) | |
| FR702225A (en) | 1931-04-02 |
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