DE409200C - Overcurrent thermal time release made of metal wires or bands - Google Patents
Overcurrent thermal time release made of metal wires or bandsInfo
- Publication number
- DE409200C DE409200C DEK89606D DEK0089606D DE409200C DE 409200 C DE409200 C DE 409200C DE K89606 D DEK89606 D DE K89606D DE K0089606 D DEK0089606 D DE K0089606D DE 409200 C DE409200 C DE 409200C
- Authority
- DE
- Germany
- Prior art keywords
- time release
- overcurrent
- bands
- expansion
- metal wires
- 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
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/10—Operating or release mechanisms
- H01H71/12—Automatic release mechanisms with or without manual release
- H01H71/14—Electrothermal mechanisms
- H01H71/16—Electrothermal mechanisms with bimetal element
Description
AUSGEGEBEN AM 5. FEBRUAR 1925ISSUED FEBRUARY 5, 1925
REICHSPATENTAMTREICH PATENT OFFICE
PATENTSCHRIFTPATENT LETTERING
- M 409200 -KLASSE 21 c GRUPPE 58 - M 409200 - CLASS 21 c GROUP 58
(K S-gSoff VIII/sic3)(K S-gSoff VIII / sic 3 )
Beim Aufbau von Überstromwärmezeitauslösern, vor allen Dingen für kleine Stromstärken, führt die übliche Ausnutzung der Längsausdehnung metallischer Körper zu Schwierigkeiten, falls man nicht zur mittelbaren Beheizung übergeht. Die mittelbare Beheizung hat den Nachteil, daß sie bei höheren Überströmen nicht schnell genug zur Auswirkung kommt. Die unmittelbare Heizung ergibt außerordentlich geringe Quer- ίο schnitte des Auslöseelementes, so daß die Zeitkonstante zu klein wird, um eine genügende Ausnutzung des zu schützenden Motors oder Apparates zu gewährleisten.When setting up overcurrent thermal time releases, especially for small currents, the usual use of the longitudinal expansion of metallic bodies leads to Difficulties if one does not switch to indirect heating. The indirect Heating has the disadvantage that it is not fast enough for higher overcurrents Impact is coming. The immediate heating results in extremely low cross ίο cuts of the release element, so that the time constant is too small to be a sufficient Ensure utilization of the motor or apparatus to be protected.
Gemäß der Erfindung wird statt der Längsausdehnung die Querausdehnung herangezogen. Hierdurch ist es möglich, unmittelbar geheizte Auslöseelemente aufzubauen, die eineAccording to the invention, the transverse dimension is used instead of the longitudinal dimension. This makes it possible to build directly heated release elements that have a
große Masse aufweisen. Diese Elemente werden dann auf Druck beansprucht. Es erscheint zweckmäßig, die notwendigen isolierenden Zwischenlagen ebenfalls für die Ausdehnung heranzuziehen.have great mass. These elements are then put under pressure. It appears expedient, the necessary insulating intermediate layers also for the expansion to use.
Abb. ι zeigt ein metallisches Element i, das um Isolierstücke 2 herumgewickelt ist. Die Querausdehnung der Drähte oder Bänder, die unter Umständen durch die Querausdehnung des Isoliermaterials unterstützt wird, führt die Auslösung herbei. Die Masse dieses Auslöseelementes ist gegenüber einem Element gleichen Querschnitts, bei dem die Längeausdehnung verwandt wird, außerordentlich groß.Fig. Ι shows a metallic element i, which is wrapped around insulating pieces 2. The transverse extent of the wires or bands, which may be supported by the transverse expansion of the insulating material, causes the release. The mass of this trigger element is opposite to an element of the same cross-section, in which the longitudinal expansion is used, is extraordinary great.
Abb. 2 und 3 zeigen ähnliche Anordnungen, bei denen die besonderen Isolationsstücke wegfallen und statt dessen oxydierte Metalle verwandt werden.Fig. 2 and 3 show similar arrangements in which the special insulation pieces are eliminated and oxidized metals are used instead.
Claims (5)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEK89606D DE409200C (en) | 1924-05-13 | 1924-05-13 | Overcurrent thermal time release made of metal wires or bands |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEK89606D DE409200C (en) | 1924-05-13 | 1924-05-13 | Overcurrent thermal time release made of metal wires or bands |
Publications (1)
Publication Number | Publication Date |
---|---|
DE409200C true DE409200C (en) | 1925-02-05 |
Family
ID=7236577
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEK89606D Expired DE409200C (en) | 1924-05-13 | 1924-05-13 | Overcurrent thermal time release made of metal wires or bands |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE409200C (en) |
-
1924
- 1924-05-13 DE DEK89606D patent/DE409200C/en not_active Expired
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