AT131050B - Phase protection relay. - Google Patents

Phase protection relay.

Info

Publication number
AT131050B
AT131050B AT131050DA AT131050B AT 131050 B AT131050 B AT 131050B AT 131050D A AT131050D A AT 131050DA AT 131050 B AT131050 B AT 131050B
Authority
AT
Austria
Prior art keywords
protection relay
phase protection
phase
relay
torque
Prior art date
Application number
Other languages
German (de)
Inventor
Fritz Ing Steghart
Otto Ing Plechl
Original Assignee
Bbc Ag Oesterr
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 Bbc Ag Oesterr filed Critical Bbc Ag Oesterr
Application granted granted Critical
Publication of AT131050B publication Critical patent/AT131050B/en

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  • Control Of Ac Motors In General (AREA)

Description

  

   <Desc/Clms Page number 1> 
 



    Phasensehutzrelais.   
 EMI1.1 
 

 <Desc/Clms Page number 2> 

 
 EMI2.1 
 (Leerlaufleistung) ab der Fall ein, dass das Drehmoment der Stromtriebe über jenes des Drehfeldmessers und der Torsionsfeder überwiegt. Es wird also das Relais bei dieser Unsymmetrie bei allen Leistungen, die grösser sind als Li ansprechen und die   Maschine..   vom Netz abtrennen. 



   Endlich soll das Phasenschutzrelais im Falle einphasigen Kurzschlusses ansprechen. Bei einphasigem Kurzschluss kehrt der Drehfeldmesser seine Drehmomentrichtung um. Das Relais   schlägt   wieder an den Anschlag ban, R spricht an und schaltet den Motor vom Netz ab. 



   PATENT-ANSPRUCHE :
1. Stromrelais zum Schutze gegen einphasigen oder unsymmetrischen Betrieb   mehrphasiger   
 EMI2.2 
 drehmoment der Strommesser grösser wird, als dasjenige des Drehfeldmessers.



   <Desc / Clms Page number 1>
 



    Phase protection relay.
 EMI1.1
 

 <Desc / Clms Page number 2>

 
 EMI2.1
 (Idle power) from the case that the torque of the current drives outweighs that of the rotary field meter and the torsion spring. With this asymmetry, the relay will respond to all powers that are greater than Li and disconnect the machine .. from the mains.



   Finally the phase protection relay should respond in the event of a single-phase short circuit. In the event of a single-phase short circuit, the rotary field meter reverses its torque direction. The relay hits the ban stop again, R responds and disconnects the motor from the mains.



   PATENT CLAIMS:
1. Current relay for protection against single-phase or asymmetrical multi-phase operation
 EMI2.2
 torque of the ammeter is greater than that of the rotary field meter.

Claims (1)

2. Stromrelais nach, Anspruch 1, dadurch gekennzeichnet, dass das Relais während des stromlosen Zustandes durch eine Feder in der Ruhelage gehalten wird. 2. Current relay according to claim 1, characterized in that the relay is held in the rest position by a spring during the de-energized state. 3. Stromrelais nach Anspruch 2, dadurch gekennzeichnet, dass das Drehmoment der Torsionsfeder kleiner ist, als das bei einphasigem Leerlauf auftretende Summendrehmoment der Stromtriebe. EMI2.3 3. Current relay according to claim 2, characterized in that the torque of the torsion spring is smaller than the total torque of the current drives occurring in single-phase idling. EMI2.3
AT131050D 1931-12-07 1931-12-07 Phase protection relay. AT131050B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT131050T 1931-12-07

Publications (1)

Publication Number Publication Date
AT131050B true AT131050B (en) 1932-12-27

Family

ID=34199636

Family Applications (1)

Application Number Title Priority Date Filing Date
AT131050D AT131050B (en) 1931-12-07 1931-12-07 Phase protection relay.

Country Status (1)

Country Link
AT (1) AT131050B (en)

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