GB577363A - Improvements in and relating to high voltage fuses - Google Patents

Improvements in and relating to high voltage fuses

Info

Publication number
GB577363A
GB577363A GB4314/44A GB431444A GB577363A GB 577363 A GB577363 A GB 577363A GB 4314/44 A GB4314/44 A GB 4314/44A GB 431444 A GB431444 A GB 431444A GB 577363 A GB577363 A GB 577363A
Authority
GB
United Kingdom
Prior art keywords
resistor
fuse
march
wires
point solder
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
GB4314/44A
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.)
British Thomson Houston Co Ltd
Original Assignee
British Thomson Houston 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 British Thomson Houston Co Ltd filed Critical British Thomson Houston Co Ltd
Publication of GB577363A publication Critical patent/GB577363A/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
    • H01H85/0039—Means for influencing the rupture process of the fusible element
    • H01H85/0047—Heating means
    • H01H85/0052—Fusible element and series heating means or series heat dams

Landscapes

  • Fuses (AREA)

Abstract

577,363. Fusible cut-outs. BRITISH THOMSON-HOUSTON CO., Ltd. March 8, 1944, No. 4314. Convention date, March 11, 1943. [Class 38 (i)] A high-current fuse comprises a glass or ceramic casing 10, containing a granular arcquenching material 21, in which is embedded a star-shaped core 12 carrying a fusible spirally-wound conductor 14, connected to the end-caps 11. The conductor 14 consists of the long wires 15 which are adapted to fuse over a considerable length and are connected by low melting-point solder 18 to the thermal storage bodies 16 connected together by a resistor 19. On sustained overcurrents insufficient to fuse the wires 15, enough heat is generated by the resistor and accumulated in the storage bodies to melt the soldered connections 18 and interrupt the circuit. In a modification, a single wire, resistor and storage body may be used, and the supporting core omitted. Where a long delay in fusing is tolerable the low-melting-point solder may be dispensed with and the wire directly connected to the thermal storage body.
GB4314/44A 1943-03-11 1944-03-08 Improvements in and relating to high voltage fuses Expired GB577363A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US577363XA 1943-03-11 1943-03-11

Publications (1)

Publication Number Publication Date
GB577363A true GB577363A (en) 1946-05-15

Family

ID=22012440

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4314/44A Expired GB577363A (en) 1943-03-11 1944-03-08 Improvements in and relating to high voltage fuses

Country Status (1)

Country Link
GB (1) GB577363A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL1002061C2 (en) * 1995-01-14 1998-02-26 Cooper Ind Inc Fuse assemblies.

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL1002061C2 (en) * 1995-01-14 1998-02-26 Cooper Ind Inc Fuse assemblies.

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