SU23186A1 - Push-button fire detector - Google Patents

Description

The present invention relates to a push-button multi-loop fire detector device with automatic grounding during damage to the line wires of the loop by means of a special relay.

The drawing shows the electrical circuit of the proposed detector.

In order to perform automatic grounding when the line wires of the cable are damaged, in order to replace the damaged wire with earth, the detector is equipped with two windings 1 and 2 relays, and the ground of the latter is set so that it attracts to the core only when the normal linear current passes through both windings. When a wire is broken due to the cessation of current passage, the measles is lowered down, the ground is detected by closing the contact K. In this position, the crp tone passes through only one winding and through the ground, replacing the return wire. With a short circuit in

The current line runs parallel to both windings, but has a different direction, as a result of which the test is released until the malfunction detected by the detector is eliminated.

The described detector will include devices and devices for the response signal and a telephone device for communication with the central station.

The subject matter of the invention.

A push-button fire device is characterized by the use of a two-winding relay, which serves to replace the damaged wire with an earth one, the grounding pin of which relay is installed so that pk attracts only when current passes through both windings in series, and the current passes through one end or in parallel both bags of measles remained unpicked, a commonplace: both line wires.