GB1253253A - - Google Patents
Info
- Publication number
- GB1253253A GB1253253A GB1253253DA GB1253253A GB 1253253 A GB1253253 A GB 1253253A GB 1253253D A GB1253253D A GB 1253253DA GB 1253253 A GB1253253 A GB 1253253A
- Authority
- GB
- United Kingdom
- Prior art keywords
- grid
- housing
- tank
- foot
- attached
- 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
- 229910001316 Ag alloy Inorganic materials 0.000 abstract 1
- 229910000599 Cr alloy Inorganic materials 0.000 abstract 1
- 229930040373 Paraformaldehyde Natural products 0.000 abstract 1
- ITZSSQVGDYUHQM-UHFFFAOYSA-N [Ag].[W] Chemical compound [Ag].[W] ITZSSQVGDYUHQM-UHFFFAOYSA-N 0.000 abstract 1
- GXDVEXJTVGRLNW-UHFFFAOYSA-N [Cr].[Cu] Chemical compound [Cr].[Cu] GXDVEXJTVGRLNW-UHFFFAOYSA-N 0.000 abstract 1
- 239000000788 chromium alloy Substances 0.000 abstract 1
- 239000000835 fiber Substances 0.000 abstract 1
- 239000007789 gas Substances 0.000 abstract 1
- 230000016507 interphase Effects 0.000 abstract 1
- 239000000203 mixture Substances 0.000 abstract 1
- -1 polyoxymethylene Polymers 0.000 abstract 1
- 229920006324 polyoxymethylene Polymers 0.000 abstract 1
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
- H01H33/72—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid having stationary parts for directing the flow of arc-extinguishing fluid, e.g. arc-extinguishing chamber
- H01H33/75—Liquid-break switches, e.g. oil-break
Landscapes
- Breakers (AREA)
- Arc-Extinguishing Devices That Are Switches (AREA)
Abstract
1,253,253. Liquid-blast switches. WESTINGHOUSE ELECTRIC CORP. 9 Jan., 1969 [6 Feb., 1968], No. 1414/69. Heading H1N. In a three-phase oil-blast switch 1 in which the three pole units A, B and C are disposed within a single tank 2, each pole unit includes a spaced pair of serially connected grid units 4 with respective vent channels 41, 42, directed radially outwardly of the tank with respect to the central axis of the three spaced pairs so that the exhaust gases may not substantially combine for interphase flashover within the tank 2. Each terminal bushing 9 has a stud 6 to which a contact foot 15 is attached, a stationary contact housing 17 being attached to foot 15 and an insulating shell 14 housing a grid unit 4 being secured to housing 17. The pairs of grid structures 4 are electrically interconnected by conducting crossarms 11A, 11B or 11C, which are reciprocally vertically moved by lift-rods 12A, 12B, 12C, to cause rod-shaped moving contacts 26 to engage and disengage with the stationary contact structures 24 in housings 17. Structure 24 comprises four spring-loaded contact fingers 21 of a copper-chromium alloy with are-resistant tungsten-silver alloy tips 21a, one finger 24A being longer than the others to act as an arc horn. Each grid structure 4 includes a stack of insulating elements of various compositions, in particular vent-providing plates 36, 37, of polyoxymethylene, see also Figs. 6-9 (not shown), and a splitter plate 39 of fibre sheets, and a bottom plug 62.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US70341068A | 1968-02-06 | 1968-02-06 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1253253A true GB1253253A (en) | 1971-11-10 |
Family
ID=24825272
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1253253D Expired GB1253253A (en) | 1968-02-06 | 1969-01-09 |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US3646296A (en) |
| ES (1) | ES362870A1 (en) |
| GB (1) | GB1253253A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5042146A (en) * | 1990-02-06 | 1991-08-27 | Watson Troy M | Method and apparatus of making an electrical interconnection on a circuit board |
| FR3039924B1 (en) * | 2015-08-07 | 2019-05-10 | Supergrid Institute | MECHANICAL CUTTING APPARATUS OF AN ELECTRIC CIRCUIT |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2760033A (en) * | 1952-11-19 | 1956-08-21 | Westinghouse Electric Corp | Circuit interrupter |
| DE1143891B (en) * | 1959-08-28 | 1963-02-21 | Continental Elektro Ind Ag | Arrangement of extinguishing chambers for liquid switches with cross flushing of the drawn arc |
| US3128360A (en) * | 1960-01-14 | 1964-04-07 | Ite Circuit Breaker Ltd | Interrupter structure having splitter plates of malleable material |
| US3214550A (en) * | 1962-05-02 | 1965-10-26 | Westinghouse Electric Corp | Circuit interrupters with crossbars captively related to piston structures |
| US3356811A (en) * | 1965-01-15 | 1967-12-05 | Westinghouse Electric Corp | Oil-type circuit breakers having outer continuous insulating support tube and inner stacked insulating plates providing lateral vent openings |
| US3392248A (en) * | 1965-03-12 | 1968-07-09 | Ite Circuit Breaker Ltd | Interrupter structure having contoured arc splitter plates and separately housed resistor contacts and resistor structure therefor |
| US3335245A (en) * | 1966-01-12 | 1967-08-08 | Ite Circuit Breaker Ltd | Combined tank liner interphase barrier for oil circuit breakers |
-
1968
- 1968-02-06 US US703410A patent/US3646296A/en not_active Expired - Lifetime
-
1969
- 1969-01-09 GB GB1253253D patent/GB1253253A/en not_active Expired
- 1969-01-24 ES ES362870A patent/ES362870A1/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| ES362870A1 (en) | 1970-11-16 |
| US3646296A (en) | 1972-02-29 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed [section 19, patents act 1949] | ||
| PLNP | Patent lapsed through nonpayment of renewal fees |