GB858791A - Improvements in or relating to gas blast electric circuit interrupters - Google Patents

Improvements in or relating to gas blast electric circuit interrupters

Info

Publication number
GB858791A
GB858791A GB7513/59A GB751359A GB858791A GB 858791 A GB858791 A GB 858791A GB 7513/59 A GB7513/59 A GB 7513/59A GB 751359 A GB751359 A GB 751359A GB 858791 A GB858791 A GB 858791A
Authority
GB
United Kingdom
Prior art keywords
contact
piston
gas
lost
motion
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
Application number
GB7513/59A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
CBS Corp
Original Assignee
Westinghouse Electric Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Westinghouse Electric Corp filed Critical Westinghouse Electric Corp
Publication of GB858791A publication Critical patent/GB858791A/en
Expired legal-status Critical Current

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
    • H01H33/901—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 making use of the energy of the arc or an auxiliary arc
    • H01H33/903—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 making use of the energy of the arc or an auxiliary arc and assisting the operating mechanism

Abstract

858,791. Gas-blast switches. WESTING- HOUSE ELECTRIC CORPORATION. March 4, 1959 [March 7, 1958], No. 7513/59. Class 38 (5). In a gas-blast circuit-interrupter having a pumping cylinder in the arcing chamber, the differential piston thereof has a lost-motion connection with the moving contact which has a passage venting into an orifice passage in the piston when the contacts are closed and which is closed after the lost-motion has been taken-up during contact separation. The interrupter housing, which preferably contains sulphur hexafluoride, comprises two cylindrical insulators 2, 3 secured and sealed to a base 27, connector plates 6 and 19 and a cap 17. The moving contact 7 passes through an opening 8 in a boss 59 on the plate 6, and the boss has threaded thereto an insulating cylinder 57 which receives one end of the differential piston 54. The piston has lost-motion on the end of the contact 7 limited by a recess 63, and its larger end is provided with a piston-ring 61 engaging the inner wall 60 of the insulator 2. A bracket 10 on the cap 17 supports the fixed contact 9 which is biased towards the moving contact by a spring 11. When the contact 7 is moved downward the contact 9 moves with it initially but the piston 54 is not moved until the lost-motion 63 is taken up. The contact 7 and piston 54 then move together and under heavy current conditions the pressure on the upper large surface 55 of the piston due to the arc assists the external operating-mechanism in compressing the gas in the cylinder 57 which is forced through passages 65 to the arcing region 52. A valve 70 is provided so that the gas in the cylinder 2 does not oppose its movement when light currents are being interrupted. Passages 49, 50, 51 in the contact 7 are sealed by the piston when the contact is moved downward but during closing movement they are opened and allow gas to flow. The plate 6 is connected to the contact 7 by rollers as described in Specification 847,968, and the contact is moved by links 34, 38, the former carrying rollers 35 in slots 36 in the base 27 and the latter being keyed to a shaft 39 rotatable by an arm 40 outside the interrupter. Specification 736,090 also is referred to.
GB7513/59A 1958-03-07 1959-03-04 Improvements in or relating to gas blast electric circuit interrupters Expired GB858791A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US719892A US2957063A (en) 1958-03-07 1958-03-07 Pumped-gas circuit interrupter

Publications (1)

Publication Number Publication Date
GB858791A true GB858791A (en) 1961-01-18

Family

ID=24891800

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7513/59A Expired GB858791A (en) 1958-03-07 1959-03-04 Improvements in or relating to gas blast electric circuit interrupters

Country Status (4)

Country Link
US (1) US2957063A (en)
CH (1) CH368535A (en)
DE (1) DE1130028B (en)
GB (1) GB858791A (en)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1210473B (en) * 1961-07-20 1966-02-10 Westinghouse Electric Corp Circuit breaker
US3218420A (en) * 1961-10-04 1965-11-16 Asea Ab Arc-extinguishing circuit breaker with enclosed gas space
FR2050727A5 (en) * 1969-06-23 1971-04-02 Latour Andre
FR2079896A5 (en) * 1970-02-16 1971-11-12 Merlin Gerin
CH524886A (en) * 1970-12-01 1972-06-30 Bbc Brown Boveri & Cie Electric compression switch
CH600538A5 (en) * 1976-04-22 1978-06-15 Bbc Brown Boveri & Cie
CA1109511A (en) * 1977-06-27 1981-09-22 Masami Kii Gas-type circuit breaker comprising means to boost arc chamber gas pressure
DE2909270C2 (en) * 1979-03-09 1985-07-18 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Auto-pneumatic pressure gas switch
DE3065575D1 (en) * 1980-03-10 1983-12-22 Sprecher & Schuh Ag Gas-blast circuit breaker
CH654138A5 (en) * 1981-06-30 1986-01-31 Sprecher & Schuh Ag HIGH VOLTAGE CIRCUIT BREAKERS.
FR2641409B1 (en) * 1989-01-02 1996-04-26 Alsthom Gec HIGH AND MEDIUM VOLTAGE CIRCUIT BREAKER WITH SUPPLY GAS
FR2646013B1 (en) * 1989-04-17 1996-02-23 Alsthom Gec MEDIUM VOLTAGE CIRCUIT BREAKER

Family Cites Families (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR696259A (en) * 1929-09-11 1930-12-29 Alsthom Cgee Further development of electric switches operating in gas
BE378023A (en) * 1930-03-10
DE651169C (en) * 1934-07-20 1937-10-08 Studiengesellschaft Fuer Hochl Fluid switch, in which a pump piston driven by the movable contact causes a fluid flow within a deletion chamber
DE637075C (en) * 1934-10-06 1936-10-21 Studiengesellschaft Fuer Hochl Oil switch with small oil quantity for high performance
DE655479C (en) * 1935-04-14 1938-01-17 Studiengesellschaft Fuer Hochl Fire chamber switch with valve-controlled outlet opening
FR810720A (en) * 1935-12-12 1937-03-27 Alsthom Cgee Improvements to arc blow switches using insulating liquid jets
DE726619C (en) * 1937-04-16 1942-10-16 Stalturbine G M B H Electric switch
DE679232C (en) * 1937-09-01 1939-08-01 Studiengesellschaft Fuer Hochl Compressed air switch
US2246171A (en) * 1938-01-10 1941-06-17 Gen Electric Method of and apparatus for interrupting electric arcs
DE697904C (en) * 1938-01-10 1940-10-29 Aeg Electric high-voltage switch with arc extinguishing in a closed case
DE675370C (en) * 1938-05-24 1939-05-06 Studiengesellschaft Fuer Hochl Pressure gas switch with differential piston
DE710178C (en) * 1940-05-04 1941-09-05 Studiengesellschaft Fuer Hochl Compressed gas switch with a differential pump piston built into the switch housing
US2442010A (en) * 1943-12-24 1948-05-25 Westinghouse Electric Corp Circuit interrupter
US2459599A (en) * 1944-09-20 1949-01-18 Westinghouse Electric Corp Circuit interrupter
US2572406A (en) * 1948-09-02 1951-10-23 Stulz Charles High-voltage oil circuit breaker
US2666118A (en) * 1950-06-29 1954-01-12 Westinghouse Electric Corp Circuit interrupter
US2781435A (en) * 1951-03-18 1957-02-12 Heilmann Philipp Arc-extinguishing mechanism for electric switches
US2757261A (en) * 1951-07-19 1956-07-31 Westinghouse Electric Corp Circuit interrupters

Also Published As

Publication number Publication date
DE1130028B (en) 1962-05-24
US2957063A (en) 1960-10-18
CH368535A (en) 1963-04-15

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