AT222204B - High voltage fuse - Google Patents
High voltage fuseInfo
- Publication number
- AT222204B AT222204B AT834860A AT834860A AT222204B AT 222204 B AT222204 B AT 222204B AT 834860 A AT834860 A AT 834860A AT 834860 A AT834860 A AT 834860A AT 222204 B AT222204 B AT 222204B
- Authority
- AT
- Austria
- Prior art keywords
- fusible
- voltage fuse
- fuse according
- bridges
- conductors
- Prior art date
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
- H01H85/041—Fuses, i.e. expendable parts of the protective device, e.g. cartridges characterised by the type
- H01H85/044—General constructions or structure of low voltage fuses, i.e. below 1000 V, or of fuses where the applicable voltage is not specified
-
- 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
- H01H85/08—Fusible members characterised by the shape or form of the fusible member
- H01H85/10—Fusible members characterised by the shape or form of the fusible member with constriction for localised fusing
-
- 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
- H01H85/12—Two or more separate fusible members in parallel
Description
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Hochspannungs-Sicherung
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ÜberströmenBrücke zum Schmelzleiter, die zweckmässig an den Querschnittsverengungen der Schmelzleiter angeord- net sind, eine Schmorstelle und ein Teillichtbogen ausgelöst wird, ohne dass die Schmelzbrücke selbst abschmilzt ; zum andern kann man den Teillichtbogen dadurch einleiten, dass man die Schmelzbrücke abschmelzen lässt. Die Schmelzleiterbrücken werden beispielsweise als Leitlack auf den Keramikträger 4 zwischen den Schmelzleitern 1 und 2 aufgebracht oder als spiralförmig gewickelte Wendel aus Metall- draht oder als Metallröhrchen ausgeführt und zwischen den Schmelzdrähten ohne feste Kontaktherstellung angeordnet.
Vorteilhaft ist die Verwendung von Halbleiterwiderständen oder Widerstandsmaterialien, die als Schmelzbrücke einen wesentlich höheren Widerstand besitzen als ein gleich langer Abschnitt des Schmelzleiters.
Hochschmelzende Metalle wie Wolfram oder Molybdän eignen sich ebenfalls gut für die Schmelzleiterbrücken, da sie erst bei Temperaturen abschmelzen, bei denen das die Schmelzleiterbrücken umgebende Füllmaterial (Quarzsand) schmilzt und schon eine gewisse Leitfähigkeit besitzt, so dass auch nach dem Abschmelzen der Schmelzleiterbrücken eine elektrisch leitende Verbindung für kurze Zeit bestehen bleibt.
Will man die Leitfähigkeit nach dem Abschmelzen der Schmelzleiterbrücken längere Zeit aufrechterhalten, so kann es vorteilhaft sein, die Schmelzleiterbrücken, von denen in einer Sicherung auch mehrere unterschiedlich voneinander gestaltet sein können, mit einer Paste aus glasflussbildenden Bestandteilen oder andern Stoffen zu umgeben, so dass bei hohen Temperaturen eine gute elektrolytische Leitfähigkeit des die Schmelzleiterbrücken umgebenden Materials entsteht.
PATENTANSPRÜCHE :
1. Hochspannungs-Sicherung mit mehreren parallelgeschalteten Schmelzleitern, zwischen denen Stromübergangsstellen vorgesehen sind, dadurch gekennzeichnet, dass die Schmelzleiter so angeordnet und ausgebildet sind, dass die Stromwege zwischen den Schmelzleitern erst nach dem Ansprechen der Sicherung wirksam werden und dadurch eine ungleichmässige Stromaufteilung auf die einzelnen Schmelzleiter hervorrufen.
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High voltage fuse
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Overcurrent bridges to the fusible link, which are expediently arranged at the cross-sectional constrictions of the fusible link, a scorching point and a partial arc are triggered without the fusible link itself melting; on the other hand, the partial arc can be initiated by letting the melting bridge melt. The fusible link bridges are applied, for example, as conductive varnish to the ceramic carrier 4 between the fusible conductors 1 and 2, or designed as spirally wound coils made of metal wire or as metal tubes and arranged between the fusible wires without making permanent contact.
It is advantageous to use semiconductor resistors or resistance materials which, as a fusible link, have a significantly higher resistance than a section of the fusible conductor of the same length.
High-melting metals such as tungsten or molybdenum are also well suited for the fusible link bridges, as they only melt at temperatures at which the filler material (quartz sand) surrounding the fusible link bridges melts and already has a certain conductivity, so that an electrically conductive one even after the fusible conductor bridges have melted Connection remains for a short time.
If the conductivity is to be maintained for a longer period of time after the fusible link bridges have melted, it can be advantageous to surround the fusible link bridges, several of which can be designed differently from one another in a fuse, with a paste of glass flux-forming components or other substances so that at high temperatures a good electrolytic conductivity of the material surrounding the fusible link is created.
PATENT CLAIMS:
1. High-voltage fuse with several fusible conductors connected in parallel, between which current transfer points are provided, characterized in that the fusible conductors are arranged and designed in such a way that the current paths between the fusible conductors only become effective after the fuse has responded and thus an uneven current distribution to the individual Create fusible link.
Claims (1)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE222204X | 1959-11-26 |
Publications (1)
Publication Number | Publication Date |
---|---|
AT222204B true AT222204B (en) | 1962-07-10 |
Family
ID=5844138
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
AT834860A AT222204B (en) | 1959-11-26 | 1960-11-09 | High voltage fuse |
Country Status (1)
Country | Link |
---|---|
AT (1) | AT222204B (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
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 |
DE3309378A1 (en) * | 1983-03-16 | 1984-09-27 | Efen Elektrotechnische Fabrik Gmbh, 6228 Eltville | Fuse insert |
DE19600947B4 (en) * | 1995-01-14 | 2007-01-04 | Cooper Industries, Inc., Houston | Backup subassembly |
-
1960
- 1960-11-09 AT AT834860A patent/AT222204B/en active
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
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 |
DE3309378A1 (en) * | 1983-03-16 | 1984-09-27 | Efen Elektrotechnische Fabrik Gmbh, 6228 Eltville | Fuse insert |
DE19600947B4 (en) * | 1995-01-14 | 2007-01-04 | Cooper Industries, Inc., Houston | Backup subassembly |
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