GB727662A - Improvements relating to fusible electric cut-outs - Google Patents

Improvements relating to fusible electric cut-outs

Info

Publication number
GB727662A
GB727662A GB2923351A GB2923351A GB727662A GB 727662 A GB727662 A GB 727662A GB 2923351 A GB2923351 A GB 2923351A GB 2923351 A GB2923351 A GB 2923351A GB 727662 A GB727662 A GB 727662A
Authority
GB
United Kingdom
Prior art keywords
strips
fuse
outs
arc
currents
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
GB2923351A
Inventor
Wilfred James Chicken
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.)
ELECTRIC TRANSMISSION Ltd
Original Assignee
ELECTRIC TRANSMISSION 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 ELECTRIC TRANSMISSION Ltd filed Critical ELECTRIC TRANSMISSION Ltd
Priority to GB2923351A priority Critical patent/GB727662A/en
Priority to FR1072509D priority patent/FR1072509A/en
Priority to ES0206702A priority patent/ES206702A1/en
Publication of GB727662A publication Critical patent/GB727662A/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
    • H01H85/04—Fuses, i.e. expendable parts of the protective device, e.g. cartridges
    • H01H85/05—Component parts thereof
    • H01H85/055—Fusible members
    • 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

727,662. Fusible cut-outs. ELECTRIC TRANSMISSION, Ltd. Nov. 21, 1952 [Dec. 13, 1951], No. 29233/51. Class 38 (1). A cartridge fuse comprises silver strips a having lengths h of reduced cross-section. A fuse element is formed of (as shown) three strips a, the number of strips depending, however, on the size of fuse, 24 being employed for a 300 amp. fuse. The strips are wound helically round a star-shaped core b, the lengths h being in register with one another so that the arc currents will not jump from one strip to another, so that three relatively weak arc currents in parallel are,obtained. The strips a are held by metal fingers e attached to a terminal cap d, and the fuse element is housed in a body c filled with a mixture of powdered quartz and marble of grain size between 60-100 meshes to the inch. The relatively long portions of reduced cross-section of each strip are stated to allow immediate extinguishing of the arc both at high and at low overload currents.
GB2923351A 1951-12-13 1951-12-13 Improvements relating to fusible electric cut-outs Expired GB727662A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
GB2923351A GB727662A (en) 1951-12-13 1951-12-13 Improvements relating to fusible electric cut-outs
FR1072509D FR1072509A (en) 1951-12-13 1952-12-08 Improvements to fuse circuit breakers
ES0206702A ES206702A1 (en) 1951-12-13 1952-12-09 Improvements relating to fusible electric cut-outs

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2923351A GB727662A (en) 1951-12-13 1951-12-13 Improvements relating to fusible electric cut-outs

Publications (1)

Publication Number Publication Date
GB727662A true GB727662A (en) 1955-04-06

Family

ID=10288247

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2923351A Expired GB727662A (en) 1951-12-13 1951-12-13 Improvements relating to fusible electric cut-outs

Country Status (3)

Country Link
ES (1) ES206702A1 (en)
FR (1) FR1072509A (en)
GB (1) GB727662A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3267240A (en) * 1963-07-22 1966-08-16 Mc Graw Edison Co Protectors for electric circuits
US3268691A (en) * 1963-07-22 1966-08-23 Mc Graw Edison Co Protectors for electric circuits
US3294936A (en) * 1964-09-08 1966-12-27 Mc Graw Edison Co Current limiting fuse
US3680019A (en) * 1970-06-08 1972-07-25 Chase Shawmut Co High-voltage fuse having a plurality of fuse links wound helically around an insulating mandrel

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3611238A (en) * 1970-07-28 1971-10-05 Chase Shawmut Co High-voltage fuse having high speed ratio
NL8300581A (en) * 1983-02-16 1984-09-17 Hazemeijer Bv COMPOSITION FOR A CURRENT LIMITING HIGH VOLTAGE MELT SAFETY.

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3267240A (en) * 1963-07-22 1966-08-16 Mc Graw Edison Co Protectors for electric circuits
US3268691A (en) * 1963-07-22 1966-08-23 Mc Graw Edison Co Protectors for electric circuits
US3294936A (en) * 1964-09-08 1966-12-27 Mc Graw Edison Co Current limiting fuse
US3680019A (en) * 1970-06-08 1972-07-25 Chase Shawmut Co High-voltage fuse having a plurality of fuse links wound helically around an insulating mandrel

Also Published As

Publication number Publication date
ES206702A1 (en) 1953-01-16
FR1072509A (en) 1954-09-14

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