SU1538153A1 - Device for checking electric circuits - Google Patents

Abstract

The invention relates to instrumentation technology and can be used to control electrical circuits. The purpose of the invention — extending the functionality — is achieved by a device diagnosing the number of a faulty circuit and identifying such types of defects as a short circuit and open circuit. For this, memory relays 6, a delay element 7, first 9 and second 10 alternating voltage sources, a decoder 11, a signal lamp 12 and an indicator 13 are entered into the device. In addition, the device contains cells 2 ₁ , 2 ₂ , ..., 2 _N control (where N is the number of monitored electrical circuits), each of which contains a relay 3, a fuse 4 and a diode 5. The drawing also shows the source 8 of the DC voltage. 1 il.

Description

signals the presence of a short something- 40

a device in one of the electrical circuits — a device for controlling electropic circuits, containing cells, simultaneously through the disconnecting switch, by the number of controlled circuits,

contact 6.5 and the closing contact voltage source, the first output

3.J.4 sends a signal to the indicator 13 45 of which is connected to the connected transducer

which gives information about the number of the faulty circuit, i.e. A J is displayed on its display corresponding to the circuit in which the short circuit has occurred.

In the event of an interruption in the load circuit 1.1, the voltage of the source 8 through the sequentially connected disconnecting contacts 3.1.1, 3.2.13. P.1 is fed to the input of the delay element 7, which operates with a time delay and sends a signal to turn on the relay 6 of the memory which cf.

control inputs, the second inputs of which are interconnected, and the outputs are connected to the first terminals of the corresponding controlled circuits

Pei, the connected second terminals of which are connected to the second terminal of the voltage source, characterized in that, in order to extend the functionality by

To identify the type of defect and the number of the faulty circuit, a delay element, a decoder, an indicator, first and second sources of alternating voltage, a signal lamp, a memory relay are inserted into the device, and each control cell contains a diode, a fuse and a relay, one output winding which is the first input of the control cell, the other output of the relay coil is the output of the control cell and is connected to the first output of the fuse, the second output of which is connected to the cathode of the diode, the anode of which is the second input of the cell It is connected to the memory relay with the first inputs of the control cells, the first input of the decoder, and the memory relay's first contact with the first output of the memory relay and the output of the delay element, whose input is through the series-connected disconnecting contacts of the control cells connected to the first output of the voltage source, the second output of which is connected to the second output of the winding of the memory relay and the first output of the signal lamp; the outputs of the first and second sources of alternating voltage correspond but are connected to second and third inputs of the decoder, a first output connected to the second signal terminal of the lamp, and the second output - with an input indicator.

Claims (1)

Claim A device for monitoring electrical circuits, containing control cells by the number of monitored circuits, a voltage source, the first output of which is connected to the connected ^ first inputs of the control cells, the second 'inputs of which are interconnected,' and the outputs are connected to the first outputs of ¹ corresponding control circuits + drink, connected the second conclusions, which are connected to the second output of the voltage source, characterized in that, in order to expand the functionality by providing identification of the type of defect and its number reference circuit, a delay element, a decoder, an indicator, first and second alternating voltage sources are introduced into the device ,! signal lamp, relay memory, and controls each cell contains a diode, the fuse and the relay, one terminal ob- _g skeins which is the first control vho- ^J home cell, the other terminal of the relay coil output control is connected to the cell and the first terminal of the fuse, a second terminal whose ed is connected to the cathode of the diode, the anode of which is the second input of the control cell and is connected through the opening contact of the memory relay to the first inputs of the control cells, the first input of the deciphering device and through the opening contact of the memory relay to the first output the house of the coil of the memory relay and the output of the delay element, the input of which through series-connected disconnecting contacts of the relay of the control cells is connected to the first terminal of the voltage source, the second terminal of which is connected to the second terminal of the coil of the memory relay and the first terminal of the signal lamp, the outputs of the first and second AC voltage sources, respectively connected to the second and third inputs of the decoder, the first output of which is connected to the second output of the signal lamp, and the second outputs to the inputs of the indicator.