DE474871C - Arrangement of a fuse for the interruption of a quiescent current line - Google Patents
Arrangement of a fuse for the interruption of a quiescent current lineInfo
- Publication number
- DE474871C DE474871C DEF66324D DEF0066324D DE474871C DE 474871 C DE474871 C DE 474871C DE F66324 D DEF66324 D DE F66324D DE F0066324 D DEF0066324 D DE F0066324D DE 474871 C DE474871 C DE 474871C
- Authority
- DE
- Germany
- Prior art keywords
- fuse
- quiescent current
- interruption
- arrangement
- current line
- 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
- H01H37/00—Thermally-actuated switches
- H01H37/74—Switches in which only the opening movement or only the closing movement of a contact is effected by heating or cooling
- H01H37/76—Contact member actuated by melting of fusible material, actuated due to burning of combustible material or due to explosion of explosive material
- H01H37/761—Contact member actuated by melting of fusible material, actuated due to burning of combustible material or due to explosion of explosive material with a fusible element forming part of the switched circuit
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Fuses (AREA)
Description
Anordnung einer Schmelzsicherung für die Unterbrechung einer Ruhestromleitung Bei elektrischen Anlagen, die im Feuersfalle selbsttätig außer Betrieb gesetzt werden, bedient man sich eines Ruhestromes, der durch eine leicht schmelzbare Verbindungsstelle geleitet wird, so daß im Falle eines Feuers die dabei zustande kommende Temperaturerhöhung die Schmelzstelle zur Trennung bringt und den Ruhestrom unterbricht, wobei der Pumpenmotor außer Betrieb gesetzt wird. Einerseits soll nun die Schmelzsicherung so angeordnet sein, daß sie der Temperatureinwirkung stark ausgesetzt ist, anderseits muß sie aber zwecks Vermeidung von-Nebenschlüssen vor Berührung geschützt werden. Dies wird durch die vorliegende Erfindung dadurch erzielt, daß die Schmelzsicherung in eine Kapsel gesetzt wird, die durch einen abschmelzbaren Deckel verschlossen ist.Arrangement of a fuse for the interruption of a quiescent current line For electrical systems that are automatically shut down in the event of a fire, one uses a quiescent current through an easily fusible connection point is conducted, so that in the event of a fire, the resulting temperature increase brings the melting point to separation and interrupts the quiescent current, whereby the pump motor is taken out of service. On the one hand, the fuse should now be arranged in this way be that it is strongly exposed to the action of temperature, on the other hand it must but must be protected from contact in order to avoid shunts. this will achieved by the present invention in that the fuse in a Capsule is set, which is closed by a fusible lid.
In der Zeichnung ist der Erfindungsgegenstand dargestellt, und zwar in Abb. i im Aufriß und in Abb.2 im Grundriß.In the drawing, the subject of the invention is shown, namely in Fig. i in elevation and in Fig. 2 in plan.
Der Ruhestrom wird durch eine Schmelzlasche i geleitet, die auf ein Isolierstück -2 zwischen Klemmschrauben 4 und 5 eingespannt ist und durch Schmelzen den Strom unterbricht. Das ganze Sicherungsstück ist in eine Isolierschutzkapsel6 eingebettet, die durch einen Deckel 7 verschlossen ist, der mit Schmelzlot 8 auf der Kapsel befestigt ist. Hierdurch wird die unerwünschte Berührung der ruhestromführenden Teile i, q. und 5 verhütet und dennoch die Einrichtung sehr wärmeempfindlich gehalten, da der dünne Schutzdeckel 7 die von außen kommende Temperaturerhöhung rasch annimmt und das Schmelzlot 8 abschmelzen läßt, wodurch er abfällt und sofort die Schmelzverbindung i der Hitzeeinwirkung gänzlich freigibt. Der Schutzdeckel? kann auch selbst aus leicht verbrennbarem oder leicht schmelzbarem Baustoff sein.The quiescent current is passed through a fusible link i, which is on a Insulating piece -2 is clamped between clamping screws 4 and 5 and by melting interrupts the current. The whole fuse is in an insulating capsule6 embedded, which is closed by a cover 7, the 8 with fusible link the capsule is attached. This prevents unwanted contact with the quiescent current-carrying Parts i, q. and 5 prevented and yet kept the device very sensitive to heat, since the thin protective cover 7 quickly accepts the temperature increase coming from the outside and melts the fusible link 8, whereby it falls off and immediately the fusible link i completely releases the heat. The protective cover? can also do it yourself easily combustible or easily meltable building material.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEF66324D DE474871C (en) | Arrangement of a fuse for the interruption of a quiescent current line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEF66324D DE474871C (en) | Arrangement of a fuse for the interruption of a quiescent current line |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE474871C true DE474871C (en) | 1929-04-10 |
Family
ID=7110404
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DEF66324D Expired DE474871C (en) | Arrangement of a fuse for the interruption of a quiescent current line |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE474871C (en) |
-
0
- DE DEF66324D patent/DE474871C/en not_active Expired
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