DE500796C - Device for securing electrical circuits by means of a fuse and a heating coil associated with this in series connection - Google Patents
Device for securing electrical circuits by means of a fuse and a heating coil associated with this in series connectionInfo
- Publication number
- DE500796C DE500796C DEA47647D DEA0047647D DE500796C DE 500796 C DE500796 C DE 500796C DE A47647 D DEA47647 D DE A47647D DE A0047647 D DEA0047647 D DE A0047647D DE 500796 C DE500796 C DE 500796C
- Authority
- DE
- Germany
- Prior art keywords
- heating coil
- fuse
- series connection
- electrical circuits
- securing electrical
- 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
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
- H01H85/54—Protective devices wherein the fuse is carried, held, or retained by an intermediate or auxiliary part removable from the base, or used as sectionalisers
- H01H85/62—Protective devices wherein the fuse is carried, held, or retained by an intermediate or auxiliary part removable from the base, or used as sectionalisers the intermediate or auxiliary part being adapted for screwing into the base
Landscapes
- General Induction Heating (AREA)
Description
Schmelzsicherungen haben bekanntlich den Nachteil, daß einerseits ihr Grenzstrom so hoch liegt, daß eine für die Leitung gefährliche hohe Überlastung längere Zeit andauern kann, ohne daß die Sicherungen zum Abschmelzen kommen, während andererseits die Sicherungen bereits bei kurzen hohen Stromstößen abschmelzen, die den Leitungen wenig oder gar nicht gefährlich sind. Eine Verbesserung der Wirkungsweise soll nun gemäß der Erfindung durch Verwendung einer normalen Schmelzsicherung, die durch eine Heizspule vorbeheizt ist, erzielt werden, deren Neuheitskennzeichen darin besteht, daß die Heizspule unmittelbar auf die Sicherungspatrone einwirkt.Fuses are known to have the disadvantage that on the one hand their limit current so is high that a dangerous high overload for the line persists for a long time can without the fuses to melt, while on the other hand the fuses already with short high current surges melt away, which are of little or no danger to the lines. An improvement the mode of operation should now, according to the invention, by using a normal fuse, which is through a heating coil is preheated, are achieved, the novelty is that the Heating coil acts directly on the fuse cartridge.
Man hat nun bereits vorgeschlagen, an Sicherungseinrichtungen einen Schmelzdraht und eine Heizspule hintereinanderzuschalten.It has already been proposed to use a fuse wire on safety devices and to connect a heating coil in series.
ao Durch diese vorbekannten Einrichtungen wird aber der hier angestrebte Zweck nicht erreicht, nämlich daß eine normale kurzschlußsicher gebaute Schmelzpatrone ohne Berücksichtigung der Vorbeheizung für einen höheren Nennstrom bemessen ist als die zu schützende Leitung führt. Durch die Anwendung der unmittelbar auf die Patrone einwirkenden Heizwicklung wird einerseits der Grenzstrom entsprechend herabgesetzt, während andererseits durch die Verwendung von Schmelzdrähten größeren Querschnitts (Patrone für höhere Nennstromstärke) die Trägheit gegenüber dem Abschmelzen bei plötzlichen Stromstößen erhöht wird. Da die Patrone normaler Bauart ist, ist die Kurzschlußsicherheit gegeben.ao However, these previously known devices do not achieve the intended purpose achieved, namely that a normal short-circuit-proof built fusible cartridge without consideration the preheating is dimensioned for a higher rated current than the line to be protected leads. Through the application the heating coil acting directly on the cartridge, on the one hand, the limit current is correspondingly reduced, while on the other hand through the use of fusible wires of larger cross-section (Cartridge for higher rated amperage) the inertia against melting is increased in the event of sudden current surges. Since the Cartridge is of normal design, the short-circuit protection is given.
Die Unterbringung der Heizvorrichtung ist an sich beliebig, sie kann entweder in das Sicherungselement oder in den Handhabungskopf eingebaut werden, so daß eine Patrone normaler Bauart auswechselbar eingesetzt werden kann und die Unverwechselbarkeit erhalten bleibt. Die Heizvorrichtung kann aber auch mit dem Patronenkörper vereinigt sein. *5The heating device can be accommodated in any way, either in the Fuse element or built into the handling head, so that a cartridge normal design can be used interchangeably and the uniqueness preserved. The heating device can also be combined with the cartridge body be. * 5
In der Zeichnung ist ein Ausführungsbeispiel der Erfindung dargestellt.An exemplary embodiment of the invention is shown in the drawing.
In dem Sicherungselement α bekannter Bauart ist der ebenfalls normale Handhabungskopf b mit der Einsatzpatrone c eingeschraubt. In dem Handhabungskopf b ist eine Isolierkappe d angeordnet, in welcher der Heizdraht e an den beiden Kontaktplatten / und g befestigt ist, so daß beim Einsetzen der Patrone c Heizdraht e und Schmelzdraht h hintereinandergeschaltet sind. Der Heizdraht besteht zweckmäßig aus Chromnickel. An Stelle der Heizspule kann auch eine andere Heizvorrichtung treten.The likewise normal handling head b with the insert cartridge c is screwed into the fuse element α of known design. In the handling head b an insulating cap d is arranged, in which the heating wire e is attached to the two contact plates / and g , so that when the cartridge c heating wire e and fuse wire h are connected in series. The heating wire is expediently made of chrome-nickel. Another heating device can also be used in place of the heating coil.
Claims (4)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEA47647D DE500796C (en) | Device for securing electrical circuits by means of a fuse and a heating coil associated with this in series connection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEA47647D DE500796C (en) | Device for securing electrical circuits by means of a fuse and a heating coil associated with this in series connection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE500796C true DE500796C (en) | 1930-06-25 |
Family
ID=6935899
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DEA47647D Expired DE500796C (en) | Device for securing electrical circuits by means of a fuse and a heating coil associated with this in series connection |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE500796C (en) |
-
0
- DE DEA47647D patent/DE500796C/en not_active Expired
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