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US3818163A - Vacuum type circuit interrupting device with contacts of infiltrated matrix material - Google Patents

Vacuum type circuit interrupting device with contacts of infiltrated matrix material Download PDF

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Publication number
US3818163A
US3818163A US00162881A US16288171A US3818163A US 3818163 A US3818163 A US 3818163A US 00162881 A US00162881 A US 00162881A US 16288171 A US16288171 A US 16288171A US 3818163 A US3818163 A US 3818163A
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US
United States
Prior art keywords
matrix
infiltrated
copper
metal
metals
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 - Lifetime
Application number
US00162881A
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English (en)
Inventor
A Robinson
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.)
English Electric Co Ltd
Original Assignee
English Electric Co Ltd
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 English Electric Co Ltd filed Critical English Electric Co Ltd
Application granted granted Critical
Publication of US3818163A publication Critical patent/US3818163A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/02—Contacts characterised by the material thereof
    • H01H1/0203—Contacts characterised by the material thereof specially adapted for vacuum switches
    • H01H1/0206—Contacts characterised by the material thereof specially adapted for vacuum switches containing as major components Cu and Cr
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C1/00—Making non-ferrous alloys
    • C22C1/04—Making non-ferrous alloys by powder metallurgy
    • C22C1/0475—Impregnated alloys
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/02—Contacts characterised by the material thereof
    • H01H1/0203—Contacts characterised by the material thereof specially adapted for vacuum switches
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J17/00—Gas-filled discharge tubes with solid cathode
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J2893/00—Discharge tubes and lamps
    • H01J2893/0059—Arc discharge tubes

Definitions

  • F IG. 1 shows a vertical cross-section through the interrupter, g
  • FIG. 2 shows diagrammatically andto a very much larger scale a vertical cross section through an arcing portion of one contact of the vacuum interrupter
  • FIG. 3 is a photomicrograph of part of a cross-section of a vacuum interrupter contact, showing an arcrefined surface layer on :the, unmodified substrate of a copper-infiltrated chromium matrix
  • the solid solubility of chromium in copper is low about 0.7 percent near the melting point of copper, less than 0.1 percent at 600 C, and asymptotic to 0.05 percent at low temperatures.
  • chromium particle size is limited to 250 microns. the maximum size of asperities is limited, and when such contacts engage under pressure in a vacuum interrupter it is believed that micro-deformation occurs. resulting in a large number of well distributed contact points. It is considered that this condition would tend to result in low resistance between the contacts when closed, good distribution of the PR loss at high current flow immediately prior to arcing, and little tendency to weld.
  • a vacuum interrupter according to claim 9, wherein the infiltrated metal comprises an alloy of copper and silver.
  • a vacuum interrupter according to claim 9, wherein the infiltrated metal comprises an alloy consisting substantially of 99.7 percent copper and 0.3 percent zirconium.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • High-Tension Arc-Extinguishing Switches Without Spraying Means (AREA)
  • Contacts (AREA)
US00162881A 1966-05-27 1971-07-15 Vacuum type circuit interrupting device with contacts of infiltrated matrix material Expired - Lifetime US3818163A (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
GB23780/66A GB1194674A (en) 1966-05-27 1966-05-27 Vacuum Type Electric Circuit Interrupting Devices
AT405468A AT297833B (de) 1966-05-27 1968-04-25 Elektrode für Vakuum-Trennschalter oder Vakuum-Entladungsstrecken
NL6806077.A NL163353C (nl) 1966-05-27 1968-04-29 Elektrode.
AU37011/68A AU3701168A (en) 1966-05-27 1968-04-29 Improvements in or relating to contacts

Publications (1)

Publication Number Publication Date
US3818163A true US3818163A (en) 1974-06-18

Family

ID=27422002

Family Applications (1)

Application Number Title Priority Date Filing Date
US00162881A Expired - Lifetime US3818163A (en) 1966-05-27 1971-07-15 Vacuum type circuit interrupting device with contacts of infiltrated matrix material

Country Status (9)

Country Link
US (1) US3818163A (xx)
AT (1) AT297833B (xx)
AU (1) AU3701168A (xx)
BE (1) BE714487A (xx)
CH (1) CH495618A (xx)
DE (1) DE1640039B1 (xx)
GB (1) GB1194674A (xx)
NL (1) NL163353C (xx)
SE (1) SE331756B (xx)

Cited By (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2914186A1 (de) * 1978-04-13 1979-10-31 Westinghouse Electric Corp Verfahren zur herstellung von elektrischen kontakten fuer vakuum- trennschalter
US4372783A (en) * 1979-07-27 1983-02-08 Mitsubishi Denki Kabushiki Kaisha Electrical contact composition for a vacuum type circuit interrupter
US4399339A (en) * 1981-03-02 1983-08-16 Cherry Electrical Products Corporation Electrical contact
US4419551A (en) * 1977-05-27 1983-12-06 Mitsubishi Denki Kabushiki Kaisha Vacuum circuit interrupter and method of producing the same
US4471184A (en) * 1981-10-03 1984-09-11 Kabushiki Kaisha Meidensha Vacuum interrupter
US4501941A (en) * 1982-10-26 1985-02-26 Westinghouse Electric Corp. Vacuum interrupter contact material
US4503010A (en) * 1982-07-16 1985-03-05 Siemens Aktiengesellschaft Process of producing a compound material of chromium and copper
DE3347550A1 (de) * 1983-12-30 1985-07-11 Siemens AG, 1000 Berlin und 8000 München Verbundwerkstoff aus chrom und kupfer, verfahren zu dessen herstellung sowie formteilkontaktstueck aus diesem werkstoff
US4640999A (en) * 1982-08-09 1987-02-03 Kabushiki Kaisha Meidensha Contact material of vacuum interrupter and manufacturing process therefor
US4686338A (en) * 1984-02-25 1987-08-11 Kabushiki Kaisha Meidensha Contact electrode material for vacuum interrupter and method of manufacturing the same
US4743718A (en) * 1987-07-13 1988-05-10 Westinghouse Electric Corp. Electrical contacts for vacuum interrupter devices
US4757166A (en) * 1987-06-15 1988-07-12 Westinghouse Electric Corp. Vacuum interrupter with ceramic enclosure
US4766274A (en) * 1988-01-25 1988-08-23 Westinghouse Electric Corp. Vacuum circuit interrupter contacts containing chromium dispersions
US4777335A (en) * 1986-01-21 1988-10-11 Kabushiki Kaisha Toshiba Contact forming material for a vacuum valve
EP0172912B1 (en) * 1984-02-16 1990-07-18 Mitsubishi Denki Kabushiki Kaisha Contact material for vacuum breaker
US5120918A (en) * 1990-11-19 1992-06-09 Westinghouse Electric Corp. Vacuum circuit interrupter contacts and shields
US5241745A (en) * 1989-05-31 1993-09-07 Siemens Aktiengesellschaft Process for producing a CUCB contact material for vacuum contactors
US5280236A (en) * 1991-07-23 1994-01-18 Seiko Electronic Components Ltd. IC test instrument
US5557083A (en) * 1993-07-14 1996-09-17 Hitachi, Ltd. Vacuum circuit breaker and electric contact
US5701993A (en) * 1994-06-10 1997-12-30 Eaton Corporation Porosity-free electrical contact material, pressure cast method and apparatus
US5852266A (en) * 1993-07-14 1998-12-22 Hitachi, Ltd. Vacuum circuit breaker as well as vacuum valve and electric contact used in same
EP1278222A2 (en) * 2001-07-17 2003-01-22 Hitachi, Ltd. Sintered vacuum circuit breaker contact and method for manufacturing
US10361039B2 (en) * 2015-08-11 2019-07-23 Meidensha Corporation Electrode material and method for manufacturing electrode material
US10629397B2 (en) * 2016-03-29 2020-04-21 Mitsubishi Electric Corporation Contact member, method for producing the same, and vacuum interrupter

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3960554A (en) * 1974-06-03 1976-06-01 Westinghouse Electric Corporation Powdered metallurgical process for forming vacuum interrupter contacts
US4048117A (en) * 1974-10-29 1977-09-13 Westinghouse Electric Corporation Vacuum switch contact materials
DE2638700C3 (de) * 1976-08-27 1983-11-10 Siemens AG, 1000 Berlin und 8000 München Elektrischer Vakuumschalter
JPS5519710A (en) * 1978-07-28 1980-02-12 Hitachi Ltd Vacuum breaker electrode
JPS6059691B2 (ja) * 1979-02-23 1985-12-26 三菱電機株式会社 真空しや断器用接点及びその製造方法
NL7905720A (nl) * 1979-07-24 1981-01-27 Hazemeijer Bv Werkwijze voor het verbeteren van schakelkontakten, in het bijzonder voor vakuumschakelaars.
DE2932407C2 (de) * 1979-08-09 1982-05-27 Siemens AG, 1000 Berlin und 8000 München Niederspannungsschütz mit dreiphasigem Kontaktsatz
JPS579019A (en) * 1980-06-18 1982-01-18 Hitachi Ltd Electrode for vacuum breaker
US4517033A (en) * 1982-11-01 1985-05-14 Mitsubishi Denki Kabushiki Kaisha Contact material for vacuum circuit breaker
JPS59163726A (ja) * 1983-03-04 1984-09-14 株式会社日立製作所 真空しや断器
JPS59214123A (ja) * 1983-05-18 1984-12-04 三菱電機株式会社 真空しや断器用接点材料
GB8426009D0 (en) * 1984-10-15 1984-11-21 Vacuum Interrupters Ltd Vacuum interrupter contacts
DE4110600C2 (de) * 1990-04-04 1996-09-05 Hitachi Ltd Elektrode für einen Vakuum-Leistungsschalter
GB2356975B (en) * 1999-12-02 2002-03-20 Alstom Improvements relating to vacuum switching device electrodes and devices incorporating them

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1769229A (en) * 1925-05-19 1930-07-01 Ambrose J Mandell Electrode and contact element
GB403937A (en) * 1932-04-01 1934-01-04 Gen Electric Improvements relating to electric switches
US2127117A (en) * 1937-02-05 1938-08-16 Mallory & Co Inc P R Copper alloys
US2137281A (en) * 1937-09-15 1938-11-22 Mallory & Co Inc P R Copper alloys
US2975256A (en) * 1958-07-24 1961-03-14 Gen Electric Vacuum type circuit interrupter
US3008022A (en) * 1960-06-15 1961-11-07 Gen Electric Contact structure for a vacuum-type circuit interrupter
US3042474A (en) * 1962-07-03 Vern m
US3367801A (en) * 1964-01-10 1968-02-06 Texas Instruments Inc Fuel cell including electrode of silver, nickel, and zinc
US3514559A (en) * 1967-03-27 1970-05-26 Mc Graw Edison Co Vacuum type circuit interrupter
US3551622A (en) * 1963-03-22 1970-12-29 Hitachi Ltd Alloy materials for electrodes of vacuum circuit breakers

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL216321A (xx) * 1956-04-17
GB1020914A (en) * 1961-11-10 1966-02-23 Gen Electric Improvements in vacuum circuit interrupter
FR1390678A (fr) * 1963-04-23 1965-02-26 Ass Elect Ind Perfectionnements aux contacts d'interrupteurs dans le vide
FR1401037A (fr) * 1963-07-18 1965-05-28 Ass Elect Ind Perfectionnements aux électrodes d'interrupteurs à vide
FR1410886A (fr) * 1963-10-11 1965-09-10 Ass Elect Ind Perfectionnements aux contacts d'interrupteurs sous vide
FR1429965A (fr) * 1964-04-21 1966-02-25 English Electric Co Ltd Contact ou électrode pour interrupteurs ou éclateurs sous vide

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3042474A (en) * 1962-07-03 Vern m
US1769229A (en) * 1925-05-19 1930-07-01 Ambrose J Mandell Electrode and contact element
GB403937A (en) * 1932-04-01 1934-01-04 Gen Electric Improvements relating to electric switches
US2127117A (en) * 1937-02-05 1938-08-16 Mallory & Co Inc P R Copper alloys
US2137281A (en) * 1937-09-15 1938-11-22 Mallory & Co Inc P R Copper alloys
US2975256A (en) * 1958-07-24 1961-03-14 Gen Electric Vacuum type circuit interrupter
US3008022A (en) * 1960-06-15 1961-11-07 Gen Electric Contact structure for a vacuum-type circuit interrupter
US3551622A (en) * 1963-03-22 1970-12-29 Hitachi Ltd Alloy materials for electrodes of vacuum circuit breakers
US3367801A (en) * 1964-01-10 1968-02-06 Texas Instruments Inc Fuel cell including electrode of silver, nickel, and zinc
US3514559A (en) * 1967-03-27 1970-05-26 Mc Graw Edison Co Vacuum type circuit interrupter

Cited By (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4419551A (en) * 1977-05-27 1983-12-06 Mitsubishi Denki Kabushiki Kaisha Vacuum circuit interrupter and method of producing the same
DE2914186A1 (de) * 1978-04-13 1979-10-31 Westinghouse Electric Corp Verfahren zur herstellung von elektrischen kontakten fuer vakuum- trennschalter
US4190753A (en) * 1978-04-13 1980-02-26 Westinghouse Electric Corp. High-density high-conductivity electrical contact material for vacuum interrupters and method of manufacture
US4372783A (en) * 1979-07-27 1983-02-08 Mitsubishi Denki Kabushiki Kaisha Electrical contact composition for a vacuum type circuit interrupter
US4399339A (en) * 1981-03-02 1983-08-16 Cherry Electrical Products Corporation Electrical contact
US4471184A (en) * 1981-10-03 1984-09-11 Kabushiki Kaisha Meidensha Vacuum interrupter
US4503010A (en) * 1982-07-16 1985-03-05 Siemens Aktiengesellschaft Process of producing a compound material of chromium and copper
US4640999A (en) * 1982-08-09 1987-02-03 Kabushiki Kaisha Meidensha Contact material of vacuum interrupter and manufacturing process therefor
US4501941A (en) * 1982-10-26 1985-02-26 Westinghouse Electric Corp. Vacuum interrupter contact material
DE3347550A1 (de) * 1983-12-30 1985-07-11 Siemens AG, 1000 Berlin und 8000 München Verbundwerkstoff aus chrom und kupfer, verfahren zu dessen herstellung sowie formteilkontaktstueck aus diesem werkstoff
EP0172912B1 (en) * 1984-02-16 1990-07-18 Mitsubishi Denki Kabushiki Kaisha Contact material for vacuum breaker
US4686338A (en) * 1984-02-25 1987-08-11 Kabushiki Kaisha Meidensha Contact electrode material for vacuum interrupter and method of manufacturing the same
US4777335A (en) * 1986-01-21 1988-10-11 Kabushiki Kaisha Toshiba Contact forming material for a vacuum valve
US4757166A (en) * 1987-06-15 1988-07-12 Westinghouse Electric Corp. Vacuum interrupter with ceramic enclosure
US4743718A (en) * 1987-07-13 1988-05-10 Westinghouse Electric Corp. Electrical contacts for vacuum interrupter devices
US4766274A (en) * 1988-01-25 1988-08-23 Westinghouse Electric Corp. Vacuum circuit interrupter contacts containing chromium dispersions
US5241745A (en) * 1989-05-31 1993-09-07 Siemens Aktiengesellschaft Process for producing a CUCB contact material for vacuum contactors
DE4135089C2 (de) * 1990-11-19 2002-07-11 Eaton Corp Vakuumschalter
US5120918A (en) * 1990-11-19 1992-06-09 Westinghouse Electric Corp. Vacuum circuit interrupter contacts and shields
US5280236A (en) * 1991-07-23 1994-01-18 Seiko Electronic Components Ltd. IC test instrument
US5557083A (en) * 1993-07-14 1996-09-17 Hitachi, Ltd. Vacuum circuit breaker and electric contact
US5852266A (en) * 1993-07-14 1998-12-22 Hitachi, Ltd. Vacuum circuit breaker as well as vacuum valve and electric contact used in same
US6048216A (en) * 1993-07-14 2000-04-11 Hitachi, Ltd. Vacuum circuit breaker as well as vacuum valve and electric contact used in same
US5701993A (en) * 1994-06-10 1997-12-30 Eaton Corporation Porosity-free electrical contact material, pressure cast method and apparatus
EP1278222A2 (en) * 2001-07-17 2003-01-22 Hitachi, Ltd. Sintered vacuum circuit breaker contact and method for manufacturing
EP1278222A3 (en) * 2001-07-17 2004-06-16 Hitachi, Ltd. Sintered vacuum circuit breaker contact and method for manufacturing
US10361039B2 (en) * 2015-08-11 2019-07-23 Meidensha Corporation Electrode material and method for manufacturing electrode material
US10629397B2 (en) * 2016-03-29 2020-04-21 Mitsubishi Electric Corporation Contact member, method for producing the same, and vacuum interrupter

Also Published As

Publication number Publication date
NL163353C (nl) 1980-08-15
BE714487A (xx) 1968-09-16
GB1194674A (en) 1970-06-10
DE1640039B1 (de) 1971-08-05
AU3701168A (en) 1969-11-06
CH495618A (fr) 1970-08-31
AT297833B (de) 1972-04-10
NL6806077A (xx) 1969-10-31
SE331756B (xx) 1971-01-11

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