The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 24, 1984
Filed:
Sep. 22, 1982
Applicant:
Inventor:
Alfred Ziegler, Munich, DE;
Assignee:
Siemens Aktiengesellschaft, Berlin & Munich, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H02H / ; H02H / ; H02J / ; H02J / ;
U.S. Cl.
CPC ...
361 62 ; 361 65 ; 307 64 ; 307 86 ; 1791 / ;
Abstract
A switching device is provided for alternating current parallel remote feed for the automatic disconnection of a faulty section and connection of a fault-free section of a remote feed field. The switching apparatus enables safe continued operation in case of a field fault. To this end, the switching apparatus contains switches for disconnecting the remote feed current paths and for connecting a d.c. voltage source to the section of the remote field facing away from the alternating voltage source. The switches are controllable by the direct current emitted by the d.c. voltage source and by the alternating currents flowing in the remote feed current paths.