SU34346A1 - Device for monitoring the state of parallel-connected current receivers - Google Patents

Description

This invention aims to provide a simple device for monitoring the status in parallel with the connected DC or AC current receivers. An example of such receivers, for which it is very important to establish whether they are inactive due to exploitation conditions or due to malfunction, can be found on the scoreboard at railway stations.

In the proposed device, a differential relay is used to monitor the state of the receivers of the electric current when the power supplies of the latter are direct current; this pair is selected so that when the linear circuit closes, when the receiver is in good condition, their magnetic fluxes cancel each other out, and the differential relay does not work, and if the circuit is faulty, with about SRI differential relay and closes a circuit common signaling device feeding abundances signal neispravnsgsti any receiver. ,, f

(167)

To detect a receiver malfunction, a pressure pedal is applied, including all serviceable receivers besides the linear circuit.

In FIG. 1 shows an electric circuit of a direct current device; FIG. 2-diagram of the same device on alternating current.

A device for monitoring the state of DC receivers consists of a differential relay equipped with several pairs of windings a, b, according to the number of controlled receivers A. Some of the ends of each napiai are connected together between themselves and connected to one of the poles (in this case minus) of the current source feeding the receiver. Connect the other end of each winding through the corresponding controlled receiver to terminals I, 2 switches B, B, B ,. Knife 3 of which is connected to another pole (in this case to the plus) of the current source feeding the receivers. The other knife 4 of these knife switches is connected to another free horse, ohm windings b. The number of turns of each IZ windings of the pair is selected so that when the switches of B, B, B are closed, the amps of each of them are equal to each other, i.e.

windings of a pair of 7 are equal to the ampere length of the yoke of this pair of the same.

When the device, i.e., when the BI, B.2, BZ switches, are closed, when the receivers A are in good condition, the differential relay will not work, since the total magnetic flux created by the ampervits of each pair will be equal to zero, and therefore Measuring the AGET relay will maintain the common circuit of all receivers of the signal device in the open state. If one of the monitored receivers fails, the differential relay will work, since the total flow will not be zero, and it will close the common signal circuit using the K core. In order to detect a faulty receiver, there is a supplementary control file, which has the form of a push pedal, as shown in the diagrams by a dotted line. In order to detect a faulty receiver, you need to unlock all the switches and use the push pedal to include everything in the circuit (Receivers. You can easily detect a faulty receiver by means of a simple inspection or a familiar method.

A device for monitoring the state of receivers powered by alternating current, the circuit of which is shown in FIG. 2, differs from that on a direct current in that in the latter case, instead of a differential relay, a transformer is attached, the secondary winding of which is closed to any

signal, for example, sound device.

 Otherwise the last device

no different from the one described above.

The subject matter of the invention.

1. A device for monitoring the condition of electric current conductors connected in parallel to a common power supply circuit using a differential relay, characterized in that for an automatic general supply of a common alarm signal of any receiver, the specified relay is provided with several pairs of windings according to the number of receivers, which are included so that one winding of the pair is connected to the line directly, and the other winding through a controlled receiver, and are selected according to the number of turns so that their magnetic fluxes and the receivers are compensated, and a pressure pedal is used to detect the faulty receiver, which serves to turn on all serviceable receivers of the linear circuit image meter.

2. Variation of the characteristic in clause 1 of the device for the case of supplying receivers with alternating current, characterized in that instead of a differential relay an IviaTop transformer is used, the secondary winding of which is closed to a signal device, for example, an audio device.

E to the author's testimony of N. V. Lupala, B. K. Shchukin 1 G. V. Krota, № 34346

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 Yes.

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