DE389956C - Device for measuring alternating current discharges - Google Patents
Device for measuring alternating current dischargesInfo
- Publication number
- DE389956C DE389956C DEM79964D DEM0079964D DE389956C DE 389956 C DE389956 C DE 389956C DE M79964 D DEM79964 D DE M79964D DE M0079964 D DEM0079964 D DE M0079964D DE 389956 C DE389956 C DE 389956C
- Authority
- DE
- Germany
- Prior art keywords
- alternating current
- current discharges
- measuring alternating
- capacities
- telephone
- 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
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R17/00—Measuring arrangements involving comparison with a reference value, e.g. bridge
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measurement Of Resistance Or Impedance (AREA)
Description
Einrichtung zur Messung von Wecbselstromableitungen. In dem Hauptpatent' 3894r z sind Einrichtungen zur Messung von ZVechselstromableitungen beschrieben, bei denen die an sich bekannte Maxwellsche Methode zum Vergleich einer Selbstinduktion mit einer Kapazität zur Ableitungsmessung benutzt wird. Mit dieser Ableitungsmeffbrücke lassen sich nach einer kleinen Abänderung gemäß der Erfindung auch Betriebsableitungen und Betriebskapazitäten direkt messen.Device for measuring alternating current discharges. In the main patent ' 3894r z describes devices for measuring Z AC current conductors, in which the Maxwell method, known per se, for comparing a self-induction is used with a capacitance for derivative measurement. With this derivation bridge After a small modification according to the invention, operational derivatives can also be used and measure operating capacities directly.
In der Abbildung, die eine beispielsweise Ausführungsfoxm der Erfindung zeigt, ist die zu messende Betriebskapazität C durch drei Kondensatoren c" c2, c" dargestellt.In the figure, an example embodiment of the invention shows is the operating capacitance C to be measured by three capacitors c "c2, c" shown.
Teilt man nun die Widerstände A B, die künstlicheAbleitung,und A C im Verhältnis c, zu c$ und legt das MeBtelephon T, an die so gefundenen Punkte E und F statt an B und C, so bleibt die Brückengleichgewichtsbedingung dieselbe, und die Erdkapazitäten der Stromquelle lassen sich durch Abgleich der Hilfsbrücke G H mit Hilfe des Telephons T, unschädlich machen. Dabei ist es nur notwendig, die zu messende Kapazität während der Abgleichung des Hilfszweiges abzuschalten, um ihre Erdkapazitäten nicht auch unwirksam zu machen.If one now divides the resistances A, B, the artificial discharge, and AC in the ratio c, to c $ and places the measuring telephone T, at the points E and F found in this way instead of at B and C, the bridge equilibrium condition remains the same, and the earth capacities of the Power sources can be rendered harmless by balancing the auxiliary bridge GH with the aid of the telephone T. It is only necessary to switch off the capacitance to be measured during the adjustment of the auxiliary branch in order not to render its earth capacities ineffective.
Die Schaltung hat den großen Vorteil, da$ das Telephon T,, des Hauptzweiges sich auf Erdpotential befindet. Der Abgleidh der Widerstände A B und A C im Verhältnis c2 zu c$ läßt sich durch eine Hilfsmessung ausführen. Im allgemeinen wird es aber genügen, das Telephon T, an die Mittelpunkte der Widerstände zu legen, da c2 und c$ bei Leitungen wesentlich gleich sind und ihre Abweichun,g voneinander für die Angabe der Betriebskapazität, die selbst nicht genau definiert ist, nicht von Bedeutung ist.The circuit has the great advantage that the telephone T1 of the main branch is at ground potential. The difference between the resistances AB and AC in the ratio c2 to c $ can be carried out by means of an auxiliary measurement. In general, however, it will suffice to place the telephone T i at the center of the resistors, since c2 and c $ are essentially the same for lines and their difference, g from one another, for the indication of the operating capacity, which is not itself precisely defined, is not of Meaning is.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEM79964D DE389956C (en) | 1922-12-16 | 1922-12-16 | Device for measuring alternating current discharges |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEM79964D DE389956C (en) | 1922-12-16 | 1922-12-16 | Device for measuring alternating current discharges |
Publications (1)
Publication Number | Publication Date |
---|---|
DE389956C true DE389956C (en) | 1924-02-15 |
Family
ID=7318579
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEM79964D Expired DE389956C (en) | 1922-12-16 | 1922-12-16 | Device for measuring alternating current discharges |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE389956C (en) |
-
1922
- 1922-12-16 DE DEM79964D patent/DE389956C/en not_active Expired
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