SU100995A1 - Incoming Relay Kit Two-Wire Interconnect (PCL) - Google Patents

Description

In existing devices, for example, in sets of relays of two-conductor connecting lines (RSL) of capacitor type, at. Two or more sections of connecting lines have repeated occupations of incoming sets of RSLs of the last sections from breaker pulses of alternating current coming from outgoing sets of RSLs of the 2nd and 3rd sections of the connecting line. In these cases, the incoming sets of PCLs and searchers connected to them are blocked after the end of the conversation. As a result of this, the number of active two-wire connecting lines is reduced, the time taken to occupy the instruments increases, and the wear of the relay of the RSL sets increases.

The proposed incoming relay kit eliminates the possibility of repeated occupancy of incoming kits and ensures the normal operation of PBX devices.

For this purpose, it is proposed to switch on the input of the burglary relay (through the closed contact of the hold relay and the open contact of the burglary relay) a DC source for short-term biasing of the burglary relay and creating the necessary deceleration of the latter to release after the relay triggers from the AC pulse.

The drawing shows part of a schematic diagram of an incoming set of an RSL in a position after a set is occupied.

The diagram shows: О - breaker relay of direct current; 3 - interlocking winding of relay; C is the wire through which the searcher is held and held (not shown in the diagram); J is the resistance through which the relay O receives, after actuation, the direct magnetizing current from the station battery B.

When the incoming set of the RSL is occupied, the relay 3 is triggered through its working winding (not shown in the diagram) and is blocked by the wire C with its blocking winding using the contact H. Due to this, the searcher is held and held directly connected to the incoming set of the RSL.

During the end of the connection line, a short-term alternating current impulse is supplied, from which the firing relay O is triggered, receiving plus batteries through the contact h. Relay O triggered through contact 3, contact 0 and resistance J receives an amplified DC magnetization from battery B and simultaneously contacts O and turns off the holding circuit of relay 3 and the search relay of the CI (not shown in the diagram).

Due to the considerable magnetization of the core by constant toch and shunting of the winding by contact 3 of relay O, the latter releases its measles after releasing the core of relay 3 with such a release time that is much longer than the possible duration of receipt of pulses from the alternating current from the outgoing w, their PCL sets of the 2nd and 3rd sections of the connecting line.

In case of continuous supply of alternating current through the connecting line (in case of damage to the outgoing w, the RSL set) relay 3, the pulser from the alternating current periodically turns on the O magnetization circuit of the relay, so that it keeps its measles in operation until the supply AC does not stop. This eliminates the possibility of damage to the searcher connected to the incoming RSL complex and subsequent searchers to which the first searcher can connect under the action of alternating current.

After releasing the relay About devices

RSL Incoming Kit

come back to the original state.

Subject invention

Claims (2)

1.Incoming relay set of two-wire interconnecting line (PCL) for automatic telephone systems containing an instantaneous one-winding DC burglary relay for receiving AC burglary pulses and an occupancy relay, characterized in that, in order to prevent unused power from the connecting line and increased wear of the relay of the RSL sets and group finders as a result of repeated occupations of the RSL set from the firing pulses, at the input of the firing relay it is turned on - through a closed ( after occupying the RSL) contact of the occupancy relay and the open contact of the burglary relay-DC source for short-term biasing of the burglary relay and creating the necessary deceleration of the latter for release after the relay triggers from AC impuls. 2. Application in the incoming relay set according to claim 1 of the electrical resistance in the bias circuit of the burglary relay. , To soya insh yli line. (- “s {} Prash (.-) Pussy to; a