GB805278A - Improvements in or relating to electric oil circuit breakers - Google Patents
Improvements in or relating to electric oil circuit breakersInfo
- Publication number
- GB805278A GB805278A GB38279/56A GB3827956A GB805278A GB 805278 A GB805278 A GB 805278A GB 38279/56 A GB38279/56 A GB 38279/56A GB 3827956 A GB3827956 A GB 3827956A GB 805278 A GB805278 A GB 805278A
- Authority
- GB
- United Kingdom
- Prior art keywords
- oil
- piston
- breaker
- chamber
- spring
- 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
- H01H33/90—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 by or in conjunction with the contact-operating mechanism
- H01H33/92—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 by or in conjunction with the contact-operating mechanism the arc-extinguishing fluid being liquid, e.g. oil
Landscapes
- Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Percussive Tools And Related Accessories (AREA)
- Circuit Breakers (AREA)
Abstract
805,278. Liquid - blast circuit breakers. MASCHINENFABRIK OERLIKON. Dec. 14, 1956 [Jan. 30, 1956], No. 38279/56. Class 38 (5). A small oil-volume circuit-breaker has an oil pump 30 controlled by the breaker actuating mechanism and mounted on the breaker pedestal 29 and an arc control chamber 1 with an non-return valve 14 which permits oil to enter the chamber only at a chamber pressure corresponding with a predetermined comparatively low value of ruptured current. The chamber 1 comprises two tubular members 6, 7 of synthetic resin bonded glass fibre fabric, mounted between two metal plates 9, 12 which may have a resistance 22 connected between them. The space 5 between the members 6, 7 forms a venting passage with a hole 11 in the plate 9 to the separator tank 4. The moving contact 16 is operated from a shaft 35 and biased open by a spring 39 acting on a lever 40 also fixed to the shaft 35 and which operates the pump piston-rod 42. The piston 44 can slide on the rod 42 but is urged against its enlarged head by a spring 45. An oil accumulator 55 recharges the pump through its non- return valves 49 so that the breaker may be opened several times in succession. When the breaker is closed the piston 44 is moved to the dotted position with the displaced oil passing through passages 54, 53 and non-return valves 48 to the top of the piston. The sealing of passage 54 by the side of the piston 44 of the end of its stroke has a damping effect on the contact movement. On opening, the spring 45 drives the piston 44 upward to force oil through the non-return valves 47 and towards the chamber 1 as shown by the arrows. At low values of fault current the valve 14 opens and oil is driven through the arc to vents 21. If the breaker remains inoperative after opening the oil which has been pumped returns through openings 17, 50, 51 and 52 to the accumulator 55. At high values of fault current the pressure in the chamber 1 keeps the valve 14 closed so that the piston 44 does not move with the rod 42.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH805278X | 1956-01-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB805278A true GB805278A (en) | 1958-12-03 |
Family
ID=4538005
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB38279/56A Expired GB805278A (en) | 1956-01-30 | 1956-12-14 | Improvements in or relating to electric oil circuit breakers |
Country Status (4)
| Country | Link |
|---|---|
| CH (1) | CH338885A (en) |
| DE (1) | DE1044922B (en) |
| FR (1) | FR1164808A (en) |
| GB (1) | GB805278A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1293885B (en) * | 1960-04-14 | 1969-04-30 | Mc Graw Edison Co | Low-fluid electrical circuit breaker |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE716296C (en) * | 1937-07-29 | 1942-01-16 | Sachsenwerk Licht & Kraft Ag | Low-liquid circuit breaker |
-
1956
- 1956-01-30 CH CH338885D patent/CH338885A/en unknown
- 1956-11-28 DE DEM32488A patent/DE1044922B/en active Pending
- 1956-12-14 GB GB38279/56A patent/GB805278A/en not_active Expired
-
1957
- 1957-01-17 FR FR1164808D patent/FR1164808A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| CH338885A (en) | 1959-06-15 |
| FR1164808A (en) | 1958-10-14 |
| DE1044922B (en) | 1958-11-27 |
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