GB1108108A - Current-limiting fuse having parallel current-limiting elements and a series connected current calibrated element with auxiliary arc gaps to blow the current-limiting elements one by one - Google Patents

Current-limiting fuse having parallel current-limiting elements and a series connected current calibrated element with auxiliary arc gaps to blow the current-limiting elements one by one

Info

Publication number
GB1108108A
GB1108108A GB50979/66A GB5097966A GB1108108A GB 1108108 A GB1108108 A GB 1108108A GB 50979/66 A GB50979/66 A GB 50979/66A GB 5097966 A GB5097966 A GB 5097966A GB 1108108 A GB1108108 A GB 1108108A
Authority
GB
United Kingdom
Prior art keywords
fuse
current
auxiliary
terminal
blowing
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
GB50979/66A
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.)
S&C Electric Co
Original Assignee
S&C 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
Priority claimed from US523312A external-priority patent/US3304389A/en
Application filed by S&C Electric Co filed Critical S&C Electric Co
Publication of GB1108108A publication Critical patent/GB1108108A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
    • G01C19/00—Gyroscopes; Turn-sensitive devices using vibrating masses; Turn-sensitive devices without moving masses; Measuring angular rate using gyroscopic effects
    • G01C19/02—Rotary gyroscopes
    • G01C19/44—Rotary gyroscopes for indicating the vertical
    • G01C19/46—Erection devices for restoring rotor axis to a desired position
    • G01C19/48—Erection devices for restoring rotor axis to a desired position operating by electrical means
    • 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
    • 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
    • H01H85/38—Means for extinguishing or suppressing arc

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Fuses (AREA)

Abstract

1,108,108. Electric cut outs. S. & C. ELECTRIC CO. 14 Nov., 1966 [24 Jan., 1966], No. 50979/66. Heading H2G. A cartridge fuse comprises a main fuse element 51 connected in series with a plurality of auxiliary fuse elements 40 and corresponding spark gaps 73 connected between the free end of the main fuse element and intermediate junctions 67 on the auxiliary fuses. The fuses 40 are each rated below the main fuse but in combination in parallel rate above it. When the main fuse 51 blows a potential difference is applied to the spark gaps 73 and one breaks down at random as indicated at 84. The whole current then passes through the corresponding auxiliary fuse 40, the major part of the current passing through the portion 68 (which is only a small portion) and through the other auxiliary fuses. The portion 68 breaks down and the whole current passes through the remaining portion 69 blowing this also. The remaining spark gaps break down in turn successively blowing the corresponding auxiliary fuses in similar manner. As shown in Figure 1, a cartridge fuse has a main fuse 50 comprising a silver wire 51 and a strain wire 52 connecting a fixed terminal 47 to a terminal 53 on an indicator tube biased to be forced outwardly by a spring 55 on blowing of the fuse. Spring contacts 58 connect between the indicator tube (and thus the terminal 53) and a fixed terminal 14 for external connection. The auxiliary fuse elements are nickel or silver alloy tapes 40 perforated as a 41 to facilitate break down, wound on an insulating ceramic former 38 and connected in parallel between the terminal 47 and a terminal 25. Metal contacts 66 engage the tapes 40 as indicated at 67 to form the intermediate junctions and have portions which project into openings 71 in an insulating flange 63 and co-operate with a conductive flange 20 to form the spark gaps. The fuse tube 65 is of fibre or inorganic material carrying a material which evolves an extinguishing gas when heated by blowing of the fuse.
GB50979/66A 1966-01-24 1966-11-14 Current-limiting fuse having parallel current-limiting elements and a series connected current calibrated element with auxiliary arc gaps to blow the current-limiting elements one by one Expired GB1108108A (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US522676A US3304387A (en) 1966-01-24 1966-01-24 Current-limiting fuse having parallel current-limiting elements and a series connected current calibrated element with auxiliary arc gaps to blow the current-limiting elements one by one
US523228A US3304388A (en) 1966-01-24 1966-01-26 Current-limiting fuse having arc chutes in which arcs are formed to cut extensions of the current-limiting elements
US523312A US3304389A (en) 1966-01-27 1966-01-27 Current-limiting fuse having an impact member to sever mechanically ribbon extensions of current-limiting elements
US523442A US3304390A (en) 1966-01-24 1966-01-27 Current-limiting fuse with dual element release and having extensions of the current-limiting elements cut by arc blasts in arc chutes and by a mechanical cutter

Publications (1)

Publication Number Publication Date
GB1108108A true GB1108108A (en) 1968-04-03

Family

ID=27504570

Family Applications (4)

Application Number Title Priority Date Filing Date
GB50670/66A Expired GB1119087A (en) 1966-01-24 1966-11-11 Current-limiting fuse having an impact member to sever mechanically ribbon extensionsof current-limiting elements
GB50979/66A Expired GB1108108A (en) 1966-01-24 1966-11-14 Current-limiting fuse having parallel current-limiting elements and a series connected current calibrated element with auxiliary arc gaps to blow the current-limiting elements one by one
GB51785/66A Expired GB1119089A (en) 1966-01-24 1966-11-18 Current-limiting fuse with dual element release and having extensions of the current-limiting elements cut by arc chutes and by a mechanical cutter
GB51784/66A Expired GB1119088A (en) 1966-01-24 1966-11-18 Current-limiting fuse having arc chutes in which arcs are formed to cut extensions of the current-limiting elements

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB50670/66A Expired GB1119087A (en) 1966-01-24 1966-11-11 Current-limiting fuse having an impact member to sever mechanically ribbon extensionsof current-limiting elements

Family Applications After (2)

Application Number Title Priority Date Filing Date
GB51785/66A Expired GB1119089A (en) 1966-01-24 1966-11-18 Current-limiting fuse with dual element release and having extensions of the current-limiting elements cut by arc chutes and by a mechanical cutter
GB51784/66A Expired GB1119088A (en) 1966-01-24 1966-11-18 Current-limiting fuse having arc chutes in which arcs are formed to cut extensions of the current-limiting elements

Country Status (2)

Country Link
US (3) US3304387A (en)
GB (4) GB1119087A (en)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3863187A (en) * 1973-06-04 1975-01-28 Chance Co Ab Total range fault interrupter
US3868618A (en) * 1974-01-18 1975-02-25 Amp Inc Fuse holder having indicator means
US3863191A (en) * 1974-03-29 1975-01-28 Chase Shawmut Co Electric cartridge fuse with blown fuse indicator
US3893056A (en) * 1974-04-01 1975-07-01 S & C Electric Co Fuse device
US4001749A (en) * 1975-12-17 1977-01-04 The Chase-Shawmut Company Electric fuse for elevated circuit voltages
US4153893A (en) * 1977-09-27 1979-05-08 S&C Electric Company End fitting for high-voltage fuse
US4198615A (en) * 1978-02-06 1980-04-15 A. B. Chance Company Full range current limiting fuse having high load current carrying capacity
US4369420A (en) * 1980-05-27 1983-01-18 Westinghouse Electric Corp. Current limiting fuse with actuable external means
US4319212A (en) * 1981-04-06 1982-03-09 General Electric Company Fuse supporting means having notches containing a gas evolving material
US6211768B1 (en) * 1999-08-18 2001-04-03 Ontario Power Generation Inc. Non-venting cutout mounted fuse
US6256183B1 (en) 1999-09-09 2001-07-03 Ferraz Shawmut Inc. Time delay fuse with mechanical overload device and indicator actuator
US20080048819A1 (en) * 2005-05-05 2008-02-28 Cooper Technologies Company Modular Fuseholders With Wireless Communication Capabilities
US7348872B1 (en) * 2006-11-10 2008-03-25 Eaton Corporation Fuse having a plurality of configurable thermal ceilings
US9490096B2 (en) 2013-03-14 2016-11-08 Mersen Usa Newburyport-Ma, Llc Medium voltage controllable fuse
US9324533B2 (en) * 2013-03-14 2016-04-26 Mersen Usa Newburyport-Ma, Llc Medium voltage controllable fuse
EP3018692A4 (en) * 2013-07-02 2017-03-15 Indelcon 2007 S.L. Device for protecting against overcurrents in electric circuits and uses of said device in a fuse link and in a related limiting fuse as well as in fuses for protecting semiconductors

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1848152A (en) * 1928-11-21 1932-03-08 Signal Engineering & Mfg Co High voltage protective device
US2200608A (en) * 1936-06-13 1940-05-14 Schweitzer & Conrad Inc Fuse
BE436228A (en) * 1938-09-01
BE446947A (en) * 1941-10-01
US2502992A (en) * 1943-12-16 1950-04-04 Westinghouse Electric Corp Circuit interrupter
US2435472A (en) * 1944-11-17 1948-02-03 Gen Electric Circuit interrupting device
CA484965A (en) * 1947-03-20 1952-07-15 J. Berberich Leo Circuit interrupters embodying polytetrafluoroethylene
US2879354A (en) * 1954-05-26 1959-03-24 Westinghouse Electric Corp Fusible devices
US2847537A (en) * 1955-07-22 1958-08-12 Chase Shawmut Co Modular low impedance fuse
US3218517A (en) * 1962-09-14 1965-11-16 Mc Graw Edison Co Combined lightning arrester and fuse cutout

Also Published As

Publication number Publication date
US3304388A (en) 1967-02-14
GB1119088A (en) 1968-07-10
US3304387A (en) 1967-02-14
GB1119089A (en) 1968-07-10
GB1119087A (en) 1968-07-10
US3304390A (en) 1967-02-14

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