GB319749A - Improvements in or relating to electrical circuit interrupters - Google Patents

Improvements in or relating to electrical circuit interrupters

Info

Publication number
GB319749A
GB319749A GB29371/29A GB2937129A GB319749A GB 319749 A GB319749 A GB 319749A GB 29371/29 A GB29371/29 A GB 29371/29A GB 2937129 A GB2937129 A GB 2937129A GB 319749 A GB319749 A GB 319749A
Authority
GB
United Kingdom
Prior art keywords
fuse
arc
channel
voltage
wire
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
GB29371/29A
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.)
Associated Electrical Industries Ltd
Original Assignee
Associated Electrical Industries 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 Associated Electrical Industries Ltd filed Critical Associated Electrical Industries Ltd
Publication of GB319749A publication Critical patent/GB319749A/en
Expired legal-status Critical Current

Links

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
    • H01H85/38—Means for extinguishing or suppressing arc
    • 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

Landscapes

  • Fuses (AREA)

Abstract

319,749. Associated Electrical Industries, Ltd., (Assignees of Slepian, J., and Mason, R. C.). Sept. 27, 1928, [Convention date]. Fusible cut-outs. - A fuse wire is enclosed in a channel of such dimensions that the voltage of the arc attains a value equal to the voltage of the circuit for a relatively low current value. Certain equations are. given in the Specification correlating the voltage per inch of arc and the current with the crosssection of a channel confining the arc. A fuse is designed from these equations that limits the current to a predetermined value when the fullcircuit voltage is applied to the ends of the arc upon the fuse being ruptured. The fuse wire 5, that may be of tungsten in preference to copper or nickel silver, lies in a channel 11 of spiral or zig-zag form cut in a block of soapstone 8. It is surrounded by a casing 2 of soapstone and connects with conducting plates 12, 13 and end caps 3, 4 having contacts 6, 7. The block 8 may be divided into two or three sections, the channel 11 being formed between them. A sudden fusion of the wire may be prevented by making a short piece of the fuse of high resistance wire and the remainder of low resistance wire.
GB29371/29A 1928-09-27 1929-09-27 Improvements in or relating to electrical circuit interrupters Expired GB319749A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US308713A US1927905A (en) 1928-09-27 1928-09-27 Potential transformer fuse

Publications (1)

Publication Number Publication Date
GB319749A true GB319749A (en) 1930-12-29

Family

ID=23195090

Family Applications (1)

Application Number Title Priority Date Filing Date
GB29371/29A Expired GB319749A (en) 1928-09-27 1929-09-27 Improvements in or relating to electrical circuit interrupters

Country Status (2)

Country Link
US (1) US1927905A (en)
GB (1) GB319749A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2877320A (en) * 1954-08-18 1959-03-10 Hill George Leslie Fuse cutout
US2917605A (en) * 1956-04-26 1959-12-15 Westinghouse Electric Corp Fusible devices
US3251968A (en) * 1963-10-10 1966-05-17 Westinghouse Electric Corp Fuse structures formed of concentric fuse tubes to provide a maximum heat radiating surface and a novel venting means

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2483577A (en) * 1943-11-24 1949-10-04 Westinghouse Electric Corp Circuit interrupter
US2502992A (en) * 1943-12-16 1950-04-04 Westinghouse Electric Corp Circuit interrupter
US2496704A (en) * 1945-03-15 1950-02-07 Westinghouse Electric Corp Circuit interrupter
US2523139A (en) * 1946-09-28 1950-09-19 Westinghouse Electric Corp Fuse
US2773960A (en) * 1954-04-28 1956-12-11 Sundt Engineering Company Time delay fuse
US2830156A (en) * 1956-12-21 1958-04-08 Jr Arthur A Burgess Shock and vibration resistant fuse
ES352151A1 (en) * 1967-03-30 1969-06-16 English Electric Co Ltd Fuse links
US3959875A (en) * 1975-05-05 1976-06-01 The Chase-Shawmut Company Method and fixture for manufacturing fuses having helically wound fusible elements
DE19738575A1 (en) * 1997-09-04 1999-06-10 Wickmann Werke Gmbh Electrical fuse element
US6507265B1 (en) * 1999-04-29 2003-01-14 Cooper Technologies Company Fuse with fuse link coating
PL360332A1 (en) * 2003-05-26 2004-11-29 Abb Sp.Z O.O. High voltage high breaking capacity thin-layer fusible cut-out
US20060119465A1 (en) * 2004-12-03 2006-06-08 Dietsch G T Fuse with expanding solder
US8525633B2 (en) * 2008-04-21 2013-09-03 Littelfuse, Inc. Fusible substrate
US9117615B2 (en) * 2010-05-17 2015-08-25 Littlefuse, Inc. Double wound fusible element and associated fuse
US8629750B2 (en) * 2010-09-20 2014-01-14 Cooper Technologies Company Fractional amp fuse and bridge element assembly therefor
US11393651B2 (en) * 2018-05-23 2022-07-19 Eaton Intelligent Power Limited Fuse with stone sand matrix reinforcement

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2877320A (en) * 1954-08-18 1959-03-10 Hill George Leslie Fuse cutout
US2917605A (en) * 1956-04-26 1959-12-15 Westinghouse Electric Corp Fusible devices
US3251968A (en) * 1963-10-10 1966-05-17 Westinghouse Electric Corp Fuse structures formed of concentric fuse tubes to provide a maximum heat radiating surface and a novel venting means

Also Published As

Publication number Publication date
US1927905A (en) 1933-09-26

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