DE577112C - Protective device for electrical apparatus and machines, consisting of a light source and a selenium cell or photocell - Google Patents

Protective device for electrical apparatus and machines, consisting of a light source and a selenium cell or photocell

Info

Publication number
DE577112C
DE577112C DEA60847D DEA0060847D DE577112C DE 577112 C DE577112 C DE 577112C DE A60847 D DEA60847 D DE A60847D DE A0060847 D DEA0060847 D DE A0060847D DE 577112 C DE577112 C DE 577112C
Authority
DE
Germany
Prior art keywords
photocell
machines
light
protective device
electrical apparatus
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
DEA60847D
Other languages
German (de)
Inventor
Charles Hatay
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
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by AEG AG filed Critical AEG AG
Priority to DEA60847D priority Critical patent/DE577112C/en
Application granted granted Critical
Publication of DE577112C publication Critical patent/DE577112C/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H5/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal non-electric working conditions with or without subsequent reconnection

Landscapes

  • Investigating Or Analysing Materials By Optical Means (AREA)

Description

Schutzeinrichtung für elektrische Apparate und Maschinen, bestehend aus einer Beleuchtungsquelle und einer Selenzelle oder Photozelle Es ist bereits bekannt, das Auftreten von Dämpfen und gasförmigen Zersetzungsprodukten der festen und flüssigen Isoliermittel von elektrischen Apparaten und Maschinen, z, B. von Transformatoren, Schaltern, Generatoren- oder Motoren, zur Betätigung einer Schutzeinrichtung heranzuziehen. Die Schutzeinrichtung besteht dabei aus einer Selenzelle oder Photozelle, deren Beleuchtungsverhältnisse dadurch geändert werden, daß die Intensität des von einer Beleuchtungsquelle ausgehenden Lichtstrahles durch die vorbeiströmenden Zersetzungsprodukte beeinflußt wird. Mit der Änderung der Beleuchtung ist bei diesen Zellen eine Änderung der elektrischen Leitfähigkeit verbunden, die in einem angeschlossenen Stromkreis sich auswirkt. Der Stromkreis kann dabei. eine Anzeige- oder Auslösevorrichtung betätigen.Protective device for electrical apparatus and machines, consisting from a light source and a selenium cell or photocell It is already known the appearance of vapors and gaseous decomposition products of the solid and liquid insulating agents for electrical apparatus and machines, e.g. Transformers, switches, generators or motors, for operating a protective device to use. The protective device consists of a selenium cell or photocell, whose lighting conditions are changed in that the intensity of the A light beam emanating from an illumination source through the decomposition products flowing past being affected. As the lighting changes, there is a change in these cells the electrical conductivity connected in a connected circuit affects. The circuit can do this. an indicator or trigger device actuate.

Die Empfindlichkeit der bekannten Anordnung kann nun erfindungsgemäß dadurch erhöht werden; daß die von der Beleuchtungsquelle ausgesandten Lichtwellen überwiegend eine kurze Wellenlänge besitzen. Die Beleuchtungsquelle wird man daher so - ausbilden, däß ihr Licht überwiegend im violetten und ultravioletten Bereich des Strahlenspektrums liegt. Als Photozelle eignet sich wegen ihrer höheren Empfindlichkeit gegenüber kurzen Lichtwellen besonders eine Alkalizelle.The sensitivity of the known arrangement can now be according to the invention are thereby increased; that the light waves emitted by the illumination source predominantly have a short wavelength. One therefore becomes the source of illumination so - train that their light is predominantly in the violet and ultraviolet range of the radiation spectrum lies. It is suitable as a photocell because of its higher sensitivity especially an alkaline cell compared to short light waves.

Durch die Einrichtung nach der Erfindung wird nämlich die Eigenschaft der kurzen Lichtwellen ausgenutzt, daß sie Rauchschwaden in geringerem Maße zu durchdringen vermögen als Licht hoher Wellenlänge. Ganz schwache Dämpfe von Zersetzungsprodukten werden daher- schon die Intensität dieser Lichtwellen beeinflussen und die Einrichtung zum Auslösen bringen.The device according to the invention namely the property exploited the short waves of light that they penetrate billows of smoke to a lesser extent can be used as light of high wavelength. Very weak fumes from decomposition products will therefore- already affect the intensity of these light waves and the facility to trigger.

Claims (3)

PATENTANSPRÜCHE: i. Schutzeinrichtung für elektrische Apparate und Maschinen, bestehend aus einer Beleuchtungsquelle und einer Selenzelle oder Photozelle, die infolge einer Änderung der Beleuchtungsverhältnisse durch die Dämpfe und gasförmigen Zersetzungsprodukte der festen und flüssigen Isoliermittel der Apparate bzw. Maschinen den Strom einer Anzeige- oder Auslösevorrichtung beeinflußt, dadurch gekennzeichnet; daß die von der-Beleuchtungsquelle ausgesandten Lichtwellen überwiegend eine kurze Wellenlänge besitzen. PATENT CLAIMS: i. Protective device for electrical apparatus and Machines, consisting of a light source and a selenium cell or photocell, the result of a change in lighting conditions due to the vapors and gaseous Decomposition products of the solid and liquid isolating agents of the apparatus or machines influencing the current of an indicating or triggering device, characterized in that; that the light waves emitted by the illumination source are predominantly short Own wavelength. 2. Schutzeinrichtung nach Anspruch i, dadurch gekennzeichnet; daB das Licht der Beleuchtungsquelle überwiegend im violetten und ultravioletten Bereich des Strahlenspektrums liegt. 2. Protection device according to claim i, characterized marked; that the light from the source of illumination is predominantly in the violet and ultraviolet region of the radiation spectrum. 3. Schutzeinrichtung nach Anspruch i und 2, dadurch gekennzeichnet, daß als Photozelle eine gegenüber kurzen Lichtwellen besonders empfindliche Alkalizelle vorgesehen ist.3. Protection device according to claim i and 2, characterized in that the photocell is a short light wave particularly sensitive alkaline cell is provided.
DEA60847D 1931-02-22 1931-02-22 Protective device for electrical apparatus and machines, consisting of a light source and a selenium cell or photocell Expired DE577112C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEA60847D DE577112C (en) 1931-02-22 1931-02-22 Protective device for electrical apparatus and machines, consisting of a light source and a selenium cell or photocell

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEA60847D DE577112C (en) 1931-02-22 1931-02-22 Protective device for electrical apparatus and machines, consisting of a light source and a selenium cell or photocell

Publications (1)

Publication Number Publication Date
DE577112C true DE577112C (en) 1933-05-23

Family

ID=6942384

Family Applications (1)

Application Number Title Priority Date Filing Date
DEA60847D Expired DE577112C (en) 1931-02-22 1931-02-22 Protective device for electrical apparatus and machines, consisting of a light source and a selenium cell or photocell

Country Status (1)

Country Link
DE (1) DE577112C (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1041564B (en) * 1954-12-30 1958-10-23 Licentia Gmbh Intrinsically safe control circuit
DE1146664B (en) * 1957-06-14 1963-04-04 Hartmann & Braun Ag Measuring point switch, especially for compensation measuring devices

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1041564B (en) * 1954-12-30 1958-10-23 Licentia Gmbh Intrinsically safe control circuit
DE1146664B (en) * 1957-06-14 1963-04-04 Hartmann & Braun Ag Measuring point switch, especially for compensation measuring devices

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