FAULT RECOVERY DEVICE FOR MONITOR CONTROL STATION IN LOOP LINE

PROBLEM TO BE SOLVED: To allow a fault in a master station to be supported. SOLUTION: Slave stations S22 , Sn-12 are arranged to ends of loop lines FD12 , FD22 connecting a master station M2 and the slave stations S22 , Sn-12 . Branch changeover switches SW1a, SW1b are provided to input terminals of...

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Bibliographische Detailangaben
Hauptverfasser:	FUJITA TETSUO, KAWABE KOICHI, TOMITA MATSUO
Format:	Patent
Sprache:	eng
Schlagworte:	ELECTRIC COMMUNICATION TECHNIQUE ELECTRICITY TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION
Online-Zugang:	Volltext bestellen
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To allow a fault in a master station to be supported. SOLUTION: Slave stations S22 , Sn-12 are arranged to ends of loop lines FD12 , FD22 connecting a master station M2 and the slave stations S22 , Sn-12 . Branch changeover switches SW1a, SW1b are provided to input terminals of the slave stations S22 , Sn-12 , 1st fixed contacts A of the switches SW1a, SW1b are connected to transmission lines FD12 , FD22 and a 2nd fixed contact B is connected to a transmission line FD3. Moving contacts C of the changeover switches SW1a, SW1b are connected to the input terminals of the slave stations S22 , Sn-12 , a hybrid transformer HT is provided to an incoming line FDI3 of a transmission line connecting the master station M3 and the slave station sn3 and the 1st fixed contact A and the moving contact C of the changeover switch SW2 are provided to an outgoing line FD23 . An output terminal of the transformer HT is connected to one terminal of a backup central monitor control installation BKM3 . via an incoming information transmission line FD3 and a 2nd fixed contact B of the changeover switch SW2 is connected to the other terminal of the installation BKM via an outgoing information transmission line FD4.