GB1028791A - Improvements in vacuum-type circuit breakers - Google Patents

Improvements in vacuum-type circuit breakers

Info

Publication number
GB1028791A
GB1028791A GB2548/63A GB254863A GB1028791A GB 1028791 A GB1028791 A GB 1028791A GB 2548/63 A GB2548/63 A GB 2548/63A GB 254863 A GB254863 A GB 254863A GB 1028791 A GB1028791 A GB 1028791A
Authority
GB
United Kingdom
Prior art keywords
shield
torr
jan
contacts
power input
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
GB2548/63A
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.)
General Electric Co
Original Assignee
General Electric Co
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 General Electric Co filed Critical General Electric Co
Publication of GB1028791A publication Critical patent/GB1028791A/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
    • H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
    • H01H33/66—Vacuum switches
    • H01H33/662—Housings or protective screens
    • H01H33/66261—Specific screen details, e.g. mounting, materials, multiple screens or specific electrical field considerations
    • 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
    • H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
    • H01H33/66—Vacuum switches
    • H01H33/662—Housings or protective screens
    • H01H33/66261—Specific screen details, e.g. mounting, materials, multiple screens or specific electrical field considerations
    • H01H2033/66269—Details relating to the materials used for screens in vacuum switches
    • 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
    • H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
    • H01H33/66—Vacuum switches
    • H01H33/662—Housings or protective screens
    • H01H33/66261—Specific screen details, e.g. mounting, materials, multiple screens or specific electrical field considerations
    • H01H2033/66292—Details relating to the use of multiple screens in vacuum switches

Abstract

1,028,791. Vacuum switches. GENERAL ELECTRIC CO. Jan. 21, 1963 [Jan. 26, 1962], No. 2548/63. Heading H2B. The invention relates to vacuum switches rated to interrupt a current in excess of 10,000 R.M.S. amperes and provides such a switch with a pair of contacts of a non-refractory metal sufficiently free from gaeous impurities that if these contacts are deeply eroded by arcing in a two-litre chamber evacuated to 10<SP>-5</SP> Torr. the pressure will not rise above 10<SP>-3</SP> Torr. 1/30th of a second after etching has ceased, and a metallic shield surrounding them whose surface area is sufficient to limit the power input (given by 0À7 IaVa) to it to 100 kw./inch<SP>2</SP> during the most severe interruptions within its rating and which is made of a metal whose ratio #k/K is less than 0À085 (where k is thermal diffusivity in in.<SP>2</SP>/sec. and K is thermal conductivity in watts/in. ‹C. at room temperature) and whose thickness is greater than #k/4 inches. Molybdenum, aluminium, copper and silver are suggested as suitable shield materials and optimum thicknesses are quoted for these and other materials. In order to reduce the power input per unit shield area, the effective area of the shield may be increased by corrugations (Fig. 5, not shown); a plurality of upstanding partitions (Figs. 7-9, not shown); or by inserting a number of perforated metal shields in front of the main shield.
GB2548/63A 1962-01-26 1963-01-21 Improvements in vacuum-type circuit breakers Expired GB1028791A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US168959A US3163734A (en) 1962-01-26 1962-01-26 Vacuum-type circuit interrupter with improved vapor-condensing shielding

Publications (1)

Publication Number Publication Date
GB1028791A true GB1028791A (en) 1966-05-11

Family

ID=22613696

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2548/63A Expired GB1028791A (en) 1962-01-26 1963-01-21 Improvements in vacuum-type circuit breakers

Country Status (3)

Country Link
US (1) US3163734A (en)
DE (1) DE1203349B (en)
GB (1) GB1028791A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9317827U1 (en) * 1993-11-22 1995-03-23 Siemens Ag Vacuum interrupter
DE19503347A1 (en) * 1995-02-02 1996-08-08 Abb Patent Gmbh Shielding element surrounding the contact point of a vacuum switch

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3283103A (en) * 1963-12-06 1966-11-01 Gen Electric Means for controlling phase relationship between flux and current in a vacuum interrupter
US3345484A (en) * 1965-05-10 1967-10-03 Gen Electric Shielding for a vacuum type circuit interrupter
US3355564A (en) * 1966-06-03 1967-11-28 John W Ranheim Vacuum-type circuit interrupter
US3366825A (en) * 1966-07-11 1968-01-30 Gen Electric Vacuum gap discharge device having grooved electrodes for thermal insulation
US3612939A (en) * 1968-03-13 1971-10-12 Westinghouse Electric Corp Molecular sieve for vacuum circuit interrupter
JPS5022231B1 (en) * 1969-01-30 1975-07-29
US4310736A (en) * 1969-03-18 1982-01-12 Mitsubishi Denki K.K. Vacuum circuit interrupter
US3668350A (en) * 1969-03-18 1972-06-06 Mitsubishi Electric Corp Vacuum type circuit interrupter
US3720798A (en) * 1969-09-08 1973-03-13 Sumitomo Electric Industries Vacuum-type current interrupter
CA1015806A (en) * 1972-07-24 1977-08-16 Sidney J. Cherry Two-material vapor shield for vacuum-type circuit interrupter
US4020304A (en) * 1972-07-24 1977-04-26 Westinghouse Electric Corporation Two-material vapor shield for vacuum-type circuit interrupter
US3825789A (en) * 1973-06-29 1974-07-23 Gen Electric Vacuum arc devices with hard, ductile, ferrous electrodes
US3851203A (en) * 1973-07-30 1974-11-26 Gen Electric Vacuum arc devices with improved arcing shields
JPS5040288Y1 (en) * 1973-10-18 1975-11-18
JPS57612B1 (en) * 1976-04-23 1982-01-07
JPS532655U (en) * 1977-07-21 1978-01-11
DE8334848U1 (en) * 1983-12-05 1986-05-07 Siemens AG, 1000 Berlin und 8000 München Vacuum switch for the low voltage range, especially low voltage contactor
ES2359755T3 (en) * 2008-09-01 2011-05-26 Abb Technology Ag SET OF LOW VOLTAGE, MEDIUM VOLTAGE AND HIGH VOLTAGE.
JP7056548B2 (en) * 2018-12-28 2022-04-19 オムロン株式会社 Electromagnetic relay
DE102022207491A1 (en) 2022-07-21 2024-02-01 Siemens Energy Global GmbH & Co. KG Vacuum interrupter for switching voltages and method for collecting particles in the vacuum interrupter

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE593489C (en) * 1934-02-26 Hubert Maschke Vacuum switch
GB291815A (en) * 1926-12-13 1928-06-13 Robert Andrews Millikan Electrical switches
GB293018A (en) * 1927-07-01 1929-08-29 Arthur Scherbius Improvements in and relating to electric switches
US1819154A (en) * 1928-08-22 1931-08-18 Westinghouse Electric & Mfg Co Vacuum circuit breaker
DE521377C (en) * 1929-02-19 1931-03-20 Birka Regulator Ges M B H Switches whose contacts work under vacuum or in an inert gas
US2740915A (en) * 1954-10-18 1956-04-03 Jennings Radio Mfg Corp Adjustable spark gap
US2794885A (en) * 1954-12-13 1957-06-04 Jennings Radio Mfg Corp Vacuum switch
US2863027A (en) * 1956-03-30 1958-12-02 Jennings Radio Mfg Corp Vacuum switch
DE1048625B (en) * 1956-04-17
NL216587A (en) * 1956-04-24
US2892912A (en) * 1956-12-24 1959-06-30 Gen Electric Vacuum type circuit interrupter
NL244627A (en) * 1958-07-24
US3014107A (en) * 1959-01-02 1961-12-19 Gen Electric Vacuum switch
US2976382A (en) * 1959-06-29 1961-03-21 Gen Electric Arc extinguishing structure for an electric circuit interrupter

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9317827U1 (en) * 1993-11-22 1995-03-23 Siemens Ag Vacuum interrupter
DE19503347A1 (en) * 1995-02-02 1996-08-08 Abb Patent Gmbh Shielding element surrounding the contact point of a vacuum switch

Also Published As

Publication number Publication date
US3163734A (en) 1964-12-29
DE1203349B (en) 1965-10-21

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