DE468951C - Open or closed fuse - Google Patents

Open or closed fuse

Info

Publication number
DE468951C
DE468951C DEA49022D DEA0049022D DE468951C DE 468951 C DE468951 C DE 468951C DE A49022 D DEA49022 D DE A49022D DE A0049022 D DEA0049022 D DE A0049022D DE 468951 C DE468951 C DE 468951C
Authority
DE
Germany
Prior art keywords
fuse
open
cartridge
short
rated current
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
DEA49022D
Other languages
German (de)
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.)
AEG AG
Original Assignee
AEG AG
Publication date
Priority to NL25194D priority Critical patent/NL25194C/xx
Priority to DEA49022D priority patent/DE468951C/en
Application granted granted Critical
Publication of DE468951C publication Critical patent/DE468951C/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

Landscapes

  • Fuses (AREA)

Description

Die zur Zeit gebräuchlichen Schmelzsicherungen, insbesondere die geschlossenen Patronen, sind gegenüber hohen kurzzeitigen Überlastungen (z. B. gegenüber Stromstößen, wie sie beim Anlassen von Motoren auftreten) zu empfindlich. Bekanntlich wird eine Sicherung bestimmten Nennstromes um so träger, je langer sie ist. Man kann demnach eine Patrone dadurch träger machen, daß man denThe fuses currently in use, especially the closed cartridges, are against high short-term overloads (e.g. against power surges, such as those that occur when starting motors) too sensitive. It is well known that a fuse with a certain nominal current becomes all the more sluggish, the longer it is. You can therefore make a cartridge inert by having the

ίο Schmelzleiter verlängert, indem man ihn etwa mehrere Male in der Patrone in gesonderten Kanälen hin und her führt. Bei einer solchen Ausführung wird die Sicherung auch gegenüber Kurzschlüssen träge, so daß unter Umständen bei Kurzschluß eine vorgeschaltete höhere Sicherung allein (oder mit) anspricht. Außerdem ist es baulich nahezu unmöglich, eine Patrone mit diesen großen Schmelzmassen kurzschlußsicher auszubilden.ίο Fusible link extended by putting it around passes back and forth several times in the cartridge in separate channels. With such a Execution, the fuse is also slow to short circuits, so that under certain circumstances in the event of a short circuit, an upstream higher fuse responds alone (or with). In addition, it is structurally almost impossible to use a cartridge with these large melt masses to be short-circuit proof.

Diese beiden Mangel werden erfindungsgemäß durch folgende Anordnung behoben: eine lange, nur überstromsichere, träge Sicherung vom Nennstrom Jn wird mit einer kurzen, kurzschlußsicheren Sicherung höheren Nennstromes hintereinandergeschaltet (Abb. 1). Es entsteht dadurch eine zusammengesetzte Patrone, die wieder den Nennstrom Jn besitzt; es arbeitet aber bei langandauernder Überlastung die lange träge, bei Kurzschluß die kurze, wenig träge Sicherung. In der Abb. 2 sind die Stromzeitschaulinien der verschiedenen Patronen dargestellt, und zwar bedeutet:These two deficiencies are remedied according to the invention by the following arrangement: a long, only overcurrent- proof, slow-blow fuse with the rated current J n is connected in series with a short, short-circuit-proof fuse with a higher rated current (Fig. 1). This creates a composite cartridge which again has the nominal current J n ; However, in the event of a long-term overload, the long, slow-acting fuse, and in the case of a short circuit, the short, less slow-acting fuse. In Fig. 2 the current time lines of the various cartridges are shown, which means:

Ki normale Patrone mit Nennstrom Jn, K 3 lange Patrone mit Nennstrom Jn, Ki normal cartridge with rated current J n , K 3 long cartridge with rated current J n ,

K 4 normale Patrone mit Nennstrom > /„, K 2 zusammengesetzte Patrone mit Nennstrom Jn. K 4 normal cartridge with rated current> / ", K 2 composite cartridge with rated current J n .

Das Endergebnis der Hintereinanderschaltung einer langen, trägen und überstromsicheren Sicherung vom Nennstrom Jn mit einer normalen Sicherung höheren Nennstromes ergibt eine Sicherung mit der dickgezeichneten Stromzeitschaulinie K 2.The end result of the series connection of a long, slow-blow and overcurrent-safe fuse with the rated current J n with a normal fuse with a higher rated current results in a fuse with the current time line K 2 drawn in bold.

Die vorbeschriebene Anordnung von Sieherungen kann vorteilhaft in einem Patronenkörper untergebracht werden.The above-described arrangement of seals can advantageously be in a cartridge body be accommodated.

Claims (2)

Patentansprüche:Patent claims: 1. Offene oder geschlossene Schmelzsicherung, dadurch gekennzeichnet, daß sie aus einer hintereinandergeschalteten Anordnung einer langen (tragen) Sicherung vom Nennstrom (Jn) und einer kurzen (wenig tragen) Sicherung höheren Nennstromes (> Jn) besteht.1. Open or closed fuse, characterized in that it consists of a series-connected arrangement of a long (wear) fuse of the nominal current (J n ) and a short (little wear) fuse of higher nominal current (> J n ) . 2. Schmelzsicherung nach Anspruch 1, dadurch gekennzeichnet, daß die hintereinandergeschalteten Schmelzdrähte verschiedener Nennstromstärke in einem Patronenkörper angeordnet sind.2. Fuse according to claim 1, characterized in that the series-connected Fusible wires of different nominal amperage are arranged in a cartridge body. Hierzu 1 Blatt Zeichnungen1 sheet of drawings
DEA49022D Open or closed fuse Expired DE468951C (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
NL25194D NL25194C (en)
DEA49022D DE468951C (en) Open or closed fuse

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEA49022D DE468951C (en) Open or closed fuse

Publications (1)

Publication Number Publication Date
DE468951C true DE468951C (en) 1928-11-28

Family

ID=6936644

Family Applications (1)

Application Number Title Priority Date Filing Date
DEA49022D Expired DE468951C (en) Open or closed fuse

Country Status (2)

Country Link
DE (1) DE468951C (en)
NL (1) NL25194C (en)

Also Published As

Publication number Publication date
NL25194C (en)

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