GB479947A - Improvements in differential piston circuit breakers - Google Patents
Improvements in differential piston circuit breakersInfo
- Publication number
- GB479947A GB479947A GB23552/36A GB2355236A GB479947A GB 479947 A GB479947 A GB 479947A GB 23552/36 A GB23552/36 A GB 23552/36A GB 2355236 A GB2355236 A GB 2355236A GB 479947 A GB479947 A GB 479947A
- Authority
- GB
- United Kingdom
- Prior art keywords
- wall
- pressure generated
- arc
- piston
- space
- 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
- H01H33/70—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid
- H01H33/88—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being produced or increased by movement of pistons or other pressure-producing parts
- H01H33/94—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being produced or increased by movement of pistons or other pressure-producing parts this movement being effected solely due to the pressure caused by the arc itself or by an auxiliary arc
- H01H33/96—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being produced or increased by movement of pistons or other pressure-producing parts this movement being effected solely due to the pressure caused by the arc itself or by an auxiliary arc the arc-extinguishing fluid being liquid, e.g. oil
Landscapes
- Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Circuit Breakers (AREA)
- Gas-Insulated Switchgears (AREA)
Abstract
479,947. High - tension switches. ALLMANNA SVENSKA ELEKTRISKA AKTIEBOLAGET. Aug. 27, 1936, No. 23552. Convention date, Aug. 28, 1935. [Class 38 (v)] An extinguishing chamber for a circuitbreaker having a differential piston 12 actuated by the pressure generated by the arc formed on separating the contacts 1, 10, includes an insulating wall 18 through which the movable contact passes, the wall being so arranged that, during the first part of the interruption period, it is moved towards the stationary contact 1 by the pressure generated by the arc. This movement results from the pressure produced in the space 21 below the wall 18 when the piston 12 is forced downwards by the pressure generated by the arc. The wall is carried by a cylinder 17, and its movement is damped by a dashpot device 25, the extent of the movement being inversely proportional to the pressure generated by the arc, so that the wall moves nearer to the fixed contact when heavy currents are interrupted than when lighter currents are interrupted. During the latter part of the interruption period, a projection 15 on the piston 12 engages a shoulder 20 on the cylinder 15 and couples the piston to the cylinder carrying the wall 18, so that the latter is moved away from the contact 1. The Specification as open to inspection under Sect. 91 comprises also a construction, Fig. 1 (Cancelled) in which the extinguishing chamber 37 is movably mounted on a rod 36 secured to the lead-in insulator 31. The pressure generated in the space 44 on separation of the contacts 40, 41 is transmitted through a channel 45 to the space 46 between the upper wall 34 of the chamber 37 and a plunger 32 secured to the end of the rod 36. The space below the plunger is in communication with the atmosphere through a channel 47, so that the pressure generated by the arc moves the whole extinguishing chamber bodily upwards, and carries the insulating wall 38 forming the bottom of the chamber nearer to the fixed contact 41. This subject-matter does not appear in the Specification as accepted.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE479947X | 1935-08-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB479947A true GB479947A (en) | 1938-02-15 |
Family
ID=20310444
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB23552/36A Expired GB479947A (en) | 1935-08-28 | 1936-08-27 | Improvements in differential piston circuit breakers |
Country Status (3)
| Country | Link |
|---|---|
| DE (1) | DE671016C (en) |
| FR (1) | FR810179A (en) |
| GB (1) | GB479947A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2781435A (en) * | 1951-03-18 | 1957-02-12 | Heilmann Philipp | Arc-extinguishing mechanism for electric switches |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE759015C (en) * | 1939-10-07 | 1952-10-27 | Sachsenwerk Licht Und Kraft A | Loeschkammer liquid switch |
-
1936
- 1936-08-27 GB GB23552/36A patent/GB479947A/en not_active Expired
- 1936-08-28 DE DEST55198D patent/DE671016C/en not_active Expired
- 1936-08-28 FR FR810179D patent/FR810179A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2781435A (en) * | 1951-03-18 | 1957-02-12 | Heilmann Philipp | Arc-extinguishing mechanism for electric switches |
Also Published As
| Publication number | Publication date |
|---|---|
| FR810179A (en) | 1937-03-17 |
| DE671016C (en) | 1939-01-30 |
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