US3401244A - Spring and shunt assembly for circuit interrupters - Google Patents

Spring and shunt assembly for circuit interrupters Download PDF

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Publication number
US3401244A
US3401244A US663021A US66302167A US3401244A US 3401244 A US3401244 A US 3401244A US 663021 A US663021 A US 663021A US 66302167 A US66302167 A US 66302167A US 3401244 A US3401244 A US 3401244A
Authority
US
United States
Prior art keywords
spring
conducting
fuse unit
auxiliary
bore
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
US663021A
Other languages
English (en)
Inventor
Calvin C Patterson
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
Priority to US663021A priority Critical patent/US3401244A/en
Priority to GB32836/68A priority patent/GB1200704A/en
Priority to BE718706D priority patent/BE718706A/xx
Priority to ES356574A priority patent/ES356574A1/es
Priority to FR1593566D priority patent/FR1593566A/fr
Priority to SE11421/68A priority patent/SE344134B/xx
Priority to JP6083668A priority patent/JPS4637968B1/ja
Application granted granted Critical
Publication of US3401244A publication Critical patent/US3401244A/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
    • H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
    • H01H85/02—Details
    • H01H85/04—Fuses, i.e. expendable parts of the protective device, e.g. cartridges
    • H01H85/041—Fuses, i.e. expendable parts of the protective device, e.g. cartridges characterised by the type
    • H01H85/042—General constructions or structure of high voltage fuses, i.e. above 1000 V

Definitions

  • FIG. 2 is an enlarged, longitudinal, sectional view of a fuse unit of the dropout type which forms part of the fuse structure shown in FIGURE 1 with portions of the end fittings of the fuse unit omitted;
  • FIGURE 1 the structure shown comprises a power fuse structure of the high voltage, dropout type, the general arrangement of which is set forth more fully in copending application Ser. No. 663,020 filed Aug. 24, 1967.
  • R. E. Frink and C. T. Walker which is assigned to the same assignee as the present application.
  • Each of the blocks 126 and 128 therefore includes around a major portion of its inner periphery a frangible inner wall, as indicated at 126A and 128A, respectively, which is arranged to disintegrate when the fuse unit is called upon to interrupt relatively large currents and when the intense heat results within the main bore 130 and the gas pressure within the main bore 130 exceeds a predetermined value.
  • the size or cross-section of the main bore 130 through the blocks 126 and 128 is effectively increased by the distintegration of the inner walls 126A and 128A of the blocks 126 and 128, respectively, to thereby 0 increase the size of the gas passageway and decrease or limit the gas pressure which would otherwise result.
  • the escape of ionized gases from the upper end of the renewable unit 20 from the auxiliary bore 192 may be adequately prevented by reducing the size of the relatively smaller opening through the retaining member 189 through which the auxiliary conduc or 182 passes so that the cross-section of the auxiliary conductor 182 substantially fills the relatively smaller opening through the retaining member 189.
  • stretching of the helical Wire 194 during the initial movement of the conducting rod 83 and the auxiliary conductor 182 following the melting or blowing of the fusible element 164 and the strain element 162 will permit the formation of an electrically insulating gap in the main bore 130 while initially delaying the formation of a significant insulating gap in the auxiliary bore 192.

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  • Fuses (AREA)
US663021A 1967-08-24 1967-08-24 Spring and shunt assembly for circuit interrupters Expired - Lifetime US3401244A (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
US663021A US3401244A (en) 1967-08-24 1967-08-24 Spring and shunt assembly for circuit interrupters
GB32836/68A GB1200704A (en) 1967-08-24 1968-07-10 High voltage circuit interrupter
BE718706D BE718706A (es) 1967-08-24 1968-07-26
ES356574A ES356574A1 (es) 1967-08-24 1968-07-27 Un aparato interruptor de circuitos de alta tension.
FR1593566D FR1593566A (es) 1967-08-24 1968-08-21
SE11421/68A SE344134B (es) 1967-08-24 1968-08-23
JP6083668A JPS4637968B1 (es) 1967-08-24 1968-08-24

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US663021A US3401244A (en) 1967-08-24 1967-08-24 Spring and shunt assembly for circuit interrupters

Publications (1)

Publication Number Publication Date
US3401244A true US3401244A (en) 1968-09-10

Family

ID=24660187

Family Applications (1)

Application Number Title Priority Date Filing Date
US663021A Expired - Lifetime US3401244A (en) 1967-08-24 1967-08-24 Spring and shunt assembly for circuit interrupters

Country Status (7)

Country Link
US (1) US3401244A (es)
JP (1) JPS4637968B1 (es)
BE (1) BE718706A (es)
ES (1) ES356574A1 (es)
FR (1) FR1593566A (es)
GB (1) GB1200704A (es)
SE (1) SE344134B (es)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3508184A (en) * 1969-01-27 1970-04-21 Westinghouse Electric Corp Fuse having improved means for reducing the force applied to a fusible means
US3855563A (en) * 1973-11-21 1974-12-17 Westinghouse Electric Corp Circuit interrupter
US3886512A (en) * 1974-05-15 1975-05-27 Westinghouse Electric Corp Spring and shunt assembly for circuit interrupter
US4952900A (en) * 1989-12-04 1990-08-28 Westinghouse Electric Corp. Controlled seal for an expulsion fuse and method of assembling same
US4995886A (en) * 1989-12-04 1991-02-26 Westinghouse Electric Corp. Method of assembling a controlled seal for an expulsion fuse

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2183728A (en) * 1936-06-17 1939-12-19 Schweitzer & Conrad Inc Fuse
US2247704A (en) * 1939-11-17 1941-07-01 Schweitzer & Conrad Inc Fuse construction
US2403121A (en) * 1942-01-29 1946-07-02 Westinghouse Electric Corp Circuit interrupter
US2502992A (en) * 1943-12-16 1950-04-04 Westinghouse Electric Corp Circuit interrupter
US2752458A (en) * 1952-07-26 1956-06-26 Westinghouse Electric Corp Circuit interrupters
US2976381A (en) * 1959-05-15 1961-03-21 S & C Electric Co Circuit interrupter
US3184568A (en) * 1962-10-01 1965-05-18 S & C Electric Co Circuit interrupter embodying 2, 4 dichloro benzoic acid or 3, 4 dichloro benzoic aci

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2183728A (en) * 1936-06-17 1939-12-19 Schweitzer & Conrad Inc Fuse
US2247704A (en) * 1939-11-17 1941-07-01 Schweitzer & Conrad Inc Fuse construction
US2403121A (en) * 1942-01-29 1946-07-02 Westinghouse Electric Corp Circuit interrupter
US2502992A (en) * 1943-12-16 1950-04-04 Westinghouse Electric Corp Circuit interrupter
US2752458A (en) * 1952-07-26 1956-06-26 Westinghouse Electric Corp Circuit interrupters
US2976381A (en) * 1959-05-15 1961-03-21 S & C Electric Co Circuit interrupter
US3184568A (en) * 1962-10-01 1965-05-18 S & C Electric Co Circuit interrupter embodying 2, 4 dichloro benzoic acid or 3, 4 dichloro benzoic aci

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3508184A (en) * 1969-01-27 1970-04-21 Westinghouse Electric Corp Fuse having improved means for reducing the force applied to a fusible means
US3855563A (en) * 1973-11-21 1974-12-17 Westinghouse Electric Corp Circuit interrupter
US3886512A (en) * 1974-05-15 1975-05-27 Westinghouse Electric Corp Spring and shunt assembly for circuit interrupter
US4952900A (en) * 1989-12-04 1990-08-28 Westinghouse Electric Corp. Controlled seal for an expulsion fuse and method of assembling same
US4995886A (en) * 1989-12-04 1991-02-26 Westinghouse Electric Corp. Method of assembling a controlled seal for an expulsion fuse

Also Published As

Publication number Publication date
JPS4637968B1 (es) 1971-11-09
SE344134B (es) 1972-03-27
FR1593566A (es) 1970-06-01
GB1200704A (en) 1970-07-29
BE718706A (es) 1968-12-31
ES356574A1 (es) 1970-01-16

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