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DE461252C - Device for determining and measuring the asymmetry in electrical multi-conductor systems - Google Patents

Device for determining and measuring the asymmetry in electrical multi-conductor systems

Info

Publication number
DE461252C
DE461252C DEK97999D DEK0097999D DE461252C DE 461252 C DE461252 C DE 461252C DE K97999 D DEK97999 D DE K97999D DE K0097999 D DEK0097999 D DE K0097999D DE 461252 C DE461252 C DE 461252C
Authority
DE
Germany
Prior art keywords
asymmetry
measuring
determining
conductor systems
electrical multi
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
DEK97999D
Other languages
German (de)
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.)
HERMANN KISLINGER
Original Assignee
HERMANN KISLINGER
Publication date
Priority to DEK97999D priority Critical patent/DE461252C/en
Application granted granted Critical
Publication of DE461252C publication Critical patent/DE461252C/en
Expired legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R29/00Arrangements for measuring or indicating electric quantities not covered by groups G01R19/00 - G01R27/00
    • G01R29/16Measuring asymmetry of polyphase networks

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Control Of Resistance Heating (AREA)

Description

Einrichtung zur Feststellung und Messung der Asymmetrie in elektrischen mehrleitersystemen. Es sind verschiedene Verfahren-und Vorrichtungen bekannt, durch die man asymmetrische elektrische Verhältnisse in Mehrleitersystemen kontrollieren und messen kann. Sie sind aber durchweg mit größeren Unkosten verknüpft. Die Einrichtungen gemäß der Erfindung sind mit geringen Mitteln auszuführen und genügen für die meisten Fälle trotz ihrer Einfachheit den Betriebserfordernissen.Device for determining and measuring the asymmetry in electrical multi-conductor systems. Various methods and devices are known by which control asymmetrical electrical conditions in multi-conductor systems and can measure. But they are always associated with greater costs. The facilities according to the invention can be carried out with few resources and suffice for most Cases in spite of their simplicity to the operational requirements.

Es wird die an sich schon lange bekannte Empfindlichkeit der Differenzthermometer (Luftthermometer) angewandt.It is the sensitivity of the differential thermometer, which has long been known (Air thermometer) applied.

Bis zu welchem Grad der Empfindlichkeit und Meßgenauigkeit man bei Verwendung dieser Thermometer gelangen kann, dürfte allerdings erst durch die Arbeit A. S c h e i -b e s : »Über ein hochempfindliches Hitzdraht-Luftthermometer zur Messung der Schwingungsenergie kurzer elektrischer Wellen« (im Jahrbuch der drahtlosen Telegraphie, Bd. 25, S. 12, usw.) neuerdings bekannt und bewiesen worden sein.Up to what degree of sensitivity and measurement accuracy one is with Use of this thermometer is likely, however, only through work A. S c h e i -b e s: »Via a highly sensitive hot wire air thermometer for Measurement of the Vibration Energy of Short Electric Waves «(in the yearbook of the wireless Telegraphie, vol. 25, p. 12, etc.) have recently become known and proven.

Zur Erläuterung der Erfindung sei in Abb. i ein Spannungsasymmeter, wie es unter anderem als Erdschlußmelder in Drehstromanlagen Anwendung findet, beispielsweise dargestellt. Die drei Gasbehälter a, a, a des dreiteiligen Gasthermometers werden dauernd bei vorhandener Netzspannung gleichmäßig durch die elektrischen Widerstandsspiralen b, b, b beheizt. Die drei Gasräume a, a, a stehen untereinander in Verbindung durch die kommunizierenden Röhren c, c, c, in denen sich eine Kontroll- und Meßflüssigkeit d, d, d befindet. Die drei Äste des Flüssigkeitskolbens d, d, d bewegen sich vor j e einer Skala, so daß die relativen Flüssigkeitsstände zahlenmäßig abgelesen und ohne Schwierigkeit ausgewertet werden können. Als Beispiel zeige die Abb. i einen asymmetrischen Flüssigkeitsspiegel. Im Rohr der Phase S ist er gestiegen, im Rohr der Phase R und T dagegen gefallen. Dieses Bild würde, auf den Betrieb übertragen, bedeuten: Phasenspannung S bleibt aus, Phasenspannung R und T sind vorhanden. Abb. 2 zeigt ein analog dem Spannungsasymmeter ausgebildetes Stromasymmeter. Es unterscheidet sich vom ersteren prinzipiell nur durch die Art des Stromanschlusses an das Netz und die Ausführungsform der Heizwiderstände b, b, b. Alles andere läßt sich sinngemäß aus Abb. i erklären und ableiten. Abb. 2 zeigt einen symmetrischen Flüssigkeitsstand, d. h. der Strom ist in allen drei Zweigen gleich. Es sei hier ausdrücklich bemerkt, daß am Wesen der Erfindung nichts geändert wird, wenn durch den Flüssigkeitsspiegel (Quecksilber) elektrische Kontakte zur Erzeugung von Hilfs- und Schutzschaltungen gesteuert werden. Ebenso bleibt es für den Erfindungsgedanken unwesentlich, in welcher räumlichen Form und chemischen Beschaffenheit die Gasheizbehälter und ihre zugehörigen Heizungen ausgeführt werden. Die Einrichtungen gemäß der Erfindung eignen sich gleich gut für alle Stromarten und für alle Spannungswerte in Mehrleitersy stemen.To explain the invention, a voltage asymmetry meter, as it is used, among other things, as an earth fault detector in three-phase systems, is shown, for example, in FIG. The three gas containers a, a, a of the three-part gas thermometer are continuously heated evenly by the electrical resistance spirals b, b, b when the mains voltage is present. The three gas spaces a, a, a are connected to one another through the communicating tubes c, c, c, in which there is a control and measuring liquid d, d, d . The three branches of the liquid piston d, d, d each move in front of a scale, so that the relative liquid levels can be read off numerically and evaluated without difficulty. As an example, Fig. I shows an asymmetrical liquid level. In the pipe of phase S it rose, but in the pipe of phase R and T it fell. This picture would, transferred to the company, mean: phase voltage S remains off, phase voltage R and T are present. Fig. 2 shows a current asymmetry designed analogously to the voltage asymmetry. It differs from the former in principle only in the type of power connection to the network and the design of the heating resistors b, b, b. Everything else can be explained and derived from Fig. I. Fig. 2 shows a symmetrical liquid level, ie the flow is the same in all three branches. It should be expressly noted here that nothing is changed in the essence of the invention if electrical contacts for generating auxiliary and protective circuits are controlled by the liquid level (mercury). It also remains unimportant for the concept of the invention in which spatial form and chemical composition the gas heating containers and their associated heaters are designed. The devices according to the invention are equally suitable for all types of current and for all voltage values in Mehrleitersy systems.

Claims (1)

PATENTANSPRUCH: Einrichtung zur Feststellung und Messung der Asymmetrie in elektrischen Mehrleitersvstemen, dadurch gekennzeichnet, daß in einem mehrteiligen Differenzthermometer den elektrischen Größen entsprechende Temperaturen erzeugt, festgestellt und gemessen werden.PATENT CLAIM: Device for determining and measuring the asymmetry in electrical multi-conductor systems, characterized in that in a multi-part Differential thermometer generates temperatures corresponding to the electrical parameters, determined and measured.
DEK97999D Device for determining and measuring the asymmetry in electrical multi-conductor systems Expired DE461252C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEK97999D DE461252C (en) Device for determining and measuring the asymmetry in electrical multi-conductor systems

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEK97999D DE461252C (en) Device for determining and measuring the asymmetry in electrical multi-conductor systems

Publications (1)

Publication Number Publication Date
DE461252C true DE461252C (en) 1928-06-27

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
DEK97999D Expired DE461252C (en) Device for determining and measuring the asymmetry in electrical multi-conductor systems

Country Status (1)

Country Link
DE (1) DE461252C (en)

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