Circuit for automatically closing a backup remote feed loop

Details Circuit for automatically closing a backup remote feed loop Circuit for automatically closing a backup remote feed loop

1983-03-23

1984-12-18

Eisenzopf, Reinhard J.

Electricity: electrical systems and devices

Control circuits for electromagnetic devices

For relays or solenoids

361210, 361194, H01H 4732

Patent

active

044893604

ABSTRACT:
A circuit for automatically closing a backup remote feed loop upon interruption of the remote feed loop of a remote feed device for supplying electrical users by means of DC series feed has a holding winding and a response winding disposed in a longitudinal arm of a switching relay, the contact of the switching relay being disposed in a cross-arm in series with a choke coil. The relay operates with a very low voltage drop at the holding winding and occupies a relatively small volume. The circuit can be utilized as an auxiliary relay controlled by means of a delay circuit for selectively cutting in and cutting out the response winding of the relay, particularly in remote feed repeaters or regenerators.

REFERENCES:
Fehlerortung in Tf-Kabelstrecken mit Unterflurverstarkern, Siemens Zeitschrift 48 (1974) supplement "Nachrichten-Ubertragungstechnik", pp. 109-111.

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