DE378545C - Method for the display of overvoltage events in overvoltage protection devices - Google Patents
Method for the display of overvoltage events in overvoltage protection devicesInfo
- Publication number
- DE378545C DE378545C DEM78197D DEM0078197D DE378545C DE 378545 C DE378545 C DE 378545C DE M78197 D DEM78197 D DE M78197D DE M0078197 D DEM0078197 D DE M0078197D DE 378545 C DE378545 C DE 378545C
- Authority
- DE
- Germany
- Prior art keywords
- overvoltage
- protection devices
- display
- events
- overvoltage protection
- 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
- H01T—SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
- H01T1/00—Details of spark gaps
- H01T1/12—Means structurally associated with spark gap for recording operation thereof
Landscapes
- Thermistors And Varistors (AREA)
Description
Verfahren zurAnzeige von Überspannungsvorgängen bei Überspannungsschutzvorrichtungen. Im Patent 291324 ist eine Überspannungsschutzvorrichtung beschrieben, bei welcher Elektroden mit scharfen Kanten oder Spitzen sich durch einen Isolierkörper getrennt gegenüberstehen. Bei der Erhöhung der Spannung über eine gewisse Grenze tritt eine Überschreitung der elektrischen Festigkeit der Luft ein und die als Kondensator zu betrachtende Vorrichtung vergrößert ihre Kapazität und läßt Ladeströme hindurch. An einzelnen Punkten des Zwischenraumes zwischen, den Elektroden sowohl in der Luft als auch in dem festen Dielektrikum entstehen Punkte hoher Felddichte.Method for displaying overvoltage events in overvoltage protection devices. In patent 291324 an overvoltage protection device is described in which Electrodes with sharp edges or points are separated by an insulating body face. When the voltage is increased above a certain limit, a Exceeding the electrical strength of the air and acting as a capacitor The device to be considered increases its capacity and allows charging currents through. At individual points in the space between, the electrodes both in the air as well as in the solid dielectric, points of high field density arise.
Nach der Erfindung wird nun das Ansprechen eines derartigen Apparates, d. h. die Bildung solcher hochbeanspruchter Punkte, dadurch kenntlich gemacht, daß vor jeder Einschaltung ein dünner Überzug aus staub- oder pulverförmigem Material auf das feste Dielektrikum gebracht wird, welcher den erwähnten Einflüssen der elektrischen Felddichte unterworfen ist. Bei richtiger Einstellung und passender Auswahl und Anordnung des Pulvermaterials, welches insbesondere nicht zu leicht sein darf, tritt eine Beeinflussung der Verteilung des Staubes oder Pulvers bei normaler Spannung, also unterhalb der Glimmgrenze nicht ein, während bei Erhöhung der Spannung, über die Glimmgrenze eine Veränderung deutlich sichtbar wird. An den Punkten hoher Felddichte wird das vorher punktförmige Gefüge der Pulverschicht verändert, so daß ein gleichmäßiger dünner Belag übrigbleibt. Es findet auch gleichzeitig eine Zerstäubung statt, welche um so intensiver ist, j e höher die Felddichte ansteigt und die soweit gehen kann, daß die Teile hoher Felddichte von dem Staub fast vollständig befreit werden, während außerhalb dieser Region der Staub unverändert liegenbleibt. Verwendet man ein leitendes Pulver, so ordnet es sich in der Nähe der abgeblasenen Stellen nach Figuren an, welche einen Rückschluß auf die Feldverteilung zulassen.According to the invention, the response of such an apparatus is now d. H. the formation of such highly stressed points, indicated by the fact that a thin coating of dusty or powdery material before switching on is brought to the solid dielectric, which the mentioned influences of the electrical Field density is subject. With the right setting and selection, and Arrangement of the powder material, which in particular must not be too light, occurs influencing the distribution of dust or powder at normal voltage, So below the glow limit not a, while when increasing the voltage, over the glow limit a change is clearly visible. At the points of high field density the previously punctiform structure of the powder layer is changed, so that a more uniform thin topping remains. There is also an atomization at the same time, which the more intense it is, the higher the field density increases and which can go as far as that the parts of high field density are almost completely freed from the dust, while outside this region the dust remains unchanged. If you use a conductive Powder, this is how it is arranged according to figures near the blown spots, which allow conclusions to be drawn about the field distribution.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEM78197D DE378545C (en) | 1922-06-24 | 1922-06-24 | Method for the display of overvoltage events in overvoltage protection devices |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEM78197D DE378545C (en) | 1922-06-24 | 1922-06-24 | Method for the display of overvoltage events in overvoltage protection devices |
Publications (1)
Publication Number | Publication Date |
---|---|
DE378545C true DE378545C (en) | 1923-07-18 |
Family
ID=7318003
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEM78197D Expired DE378545C (en) | 1922-06-24 | 1922-06-24 | Method for the display of overvoltage events in overvoltage protection devices |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE378545C (en) |
-
1922
- 1922-06-24 DE DEM78197D patent/DE378545C/en not_active Expired
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP0018522A1 (en) | Method and apparatus for sustaining a cathodic protection against corrosion | |
DE378545C (en) | Method for the display of overvoltage events in overvoltage protection devices | |
DE833798C (en) | Process for preventing disruptive space charges in electrostatic precipitators | |
DE69026790T2 (en) | Conductivity meter | |
DE658721C (en) | Device for the production of artificial fibers from a fiber-forming fluid | |
DE713635C (en) | Electrically semiconducting ground | |
DE822558C (en) | Arrangement for monitoring the insulation condition of the high-voltage system on electric vehicles isolated from earth | |
DE741159C (en) | Electrical insulating body made of ceramic material containing titanium dioxide as the main component | |
DE737825C (en) | Multiple protective spark gap for high voltage systems | |
DE499604C (en) | Electrical insulating body made of crystalline materials | |
DE675021C (en) | Electrostatic precipitator | |
DE730472C (en) | Device for testing insulating surfaces of any shaped conductor objects | |
DE404487C (en) | Corona protection device | |
AT221623B (en) | Registration device for response processes of surge arresters | |
DE657836C (en) | Electric discharge vessel with device for displaying the hours of operation | |
DE617146C (en) | Process for eliminating the edge effect on metal deposits on capacitors, insulators, etc. like | |
AT134577B (en) | Process for electrical gas cleaning. | |
DE323793C (en) | Protective resistance against traveling waves for series connection with the part of the line to be protected | |
DE941143C (en) | Process for the production of an electrolytic capacitor, in which the cathode consists of a covering of metal applied to a spacer | |
DE394127C (en) | Overvoltage protection | |
AT290340B (en) | Device for the production of an intimately mixed continuous filament yarn from at least two different multifilament yarns | |
DE419773C (en) | Arrangement for the display and registration of overvoltage phenomena in electrical networks | |
DE489211C (en) | High voltage capacitor | |
DE411735C (en) | Corona protection device | |
DE505909C (en) | Circuit for power supply units |