AT8705B - Switching device for induction measuring devices for equally loaded three-phase systems. - Google Patents

Switching device for induction measuring devices for equally loaded three-phase systems.

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Publication number
AT8705B
AT8705B AT8705DA AT8705B AT 8705 B AT8705 B AT 8705B AT 8705D A AT8705D A AT 8705DA AT 8705 B AT8705 B AT 8705B
Authority
AT
Austria
Prior art keywords
switching device
measuring devices
phase systems
equally loaded
induction measuring
Prior art date
Application number
Other languages
German (de)
Original Assignee
Oesterreichische Union Elek Ci
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 Oesterreichische Union Elek Ci filed Critical Oesterreichische Union Elek Ci
Application granted granted Critical
Publication of AT8705B publication Critical patent/AT8705B/en

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  • Testing Electric Properties And Detecting Electric Faults (AREA)

Description

  

   <Desc/Clms Page number 1> 
 



  ÖSTERREICHISCHEUNIONELEKTRICITÄTS-GESELLSCHAFT   ix WIEN.   
 EMI1.1 
 



   Es ist bekannt, dass unter Annahme gleicher Belastung und gleicher Verschiebung in den drei Leitungen Drehstrom durch ein gewöhnliches Wattmeter gemessen werden kann.   Es ist dabei nothwendig,   dass die Spannungsspule des Instrumentes einen Strom führt, der mit dem Strom der dickdrähtigen Spule dann in Phase ist, wenn das System inductionsfrei und gleichmässig belastet ist : von diesem Umstand wird in der Technik bei der bekannton Schaltungsweise der auf   elektrodynamischem Princip   beruhenden Zähler mit künstlichen Nullpunkt Gebrauch   gemacht.   



   Bei Zählern nach Ferrairs Princip wird es dementsprechend darauf ankommen, sie im   Drchstromnetz   so anzuordnen, dass der in der Hauptstromspule Hiessende Strom in seiner Wirkung auf die bewegliche Scheibe vereinigt wird mit einem   Nebenschlusstrop\     wetcher th)"gegen   den IIauptstrom zurückbleibt, so lange das   Netz gleichmässig   und inductionsfreibelastetist. 
 EMI1.2 
 

**WARNUNG** Ende DESC Feld kannt Anfang CLMS uberlappen**.



   <Desc / Clms Page number 1>
 



  AUSTRIAN UNION ELECTRICITY GESELLSCHAFT ix VIENNA.
 EMI1.1
 



   It is known that, assuming the same load and the same displacement in the three lines, three-phase current can be measured by an ordinary wattmeter. It is necessary that the voltage coil of the instrument conducts a current which is in phase with the current of the thick-wire coil when the system is inductively-free and evenly loaded: this fact is used in technology with the circuitry based on the electrodynamic principle based counter with artificial zero point made use of.



   In the case of meters according to Ferrair's principle, it will therefore be important to arrange them in the third-current network in such a way that the current in the main current coil is combined in its effect on the movable disk with a shunt drop against the main current as long as the network remains is evenly and induction-free load.
 EMI1.2
 

** WARNING ** End of DESC field may overlap beginning of CLMS **.

Claims (1)

**WARNUNG** Ende CLMS Feld Kannt Anfang DESC uberlappen**. ** WARNING ** End of CLMS field may overlap beginning of DESC **.
AT8705D 1900-12-10 1900-12-10 Switching device for induction measuring devices for equally loaded three-phase systems. AT8705B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT8705T 1900-12-10

Publications (1)

Publication Number Publication Date
AT8705B true AT8705B (en) 1902-08-11

Family

ID=3501694

Family Applications (1)

Application Number Title Priority Date Filing Date
AT8705D AT8705B (en) 1900-12-10 1900-12-10 Switching device for induction measuring devices for equally loaded three-phase systems.

Country Status (1)

Country Link
AT (1) AT8705B (en)

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