SU651355A1 - Electric wiring checking arrangement - Google Patents

Description

(54) ELECTRIC INSTALLATION MONITORING APPENDIX 6 measurements, from the outputs of which the signals were output to the indication of the state of monitored contacts. The device works as follows. The corresponding contacts of the reference and controlled objects are respectively supplied with the voltages + E and -E. If the currents flowing through the series-connected orpajractive resistors (between points viv) are equal, then the potential of the point c is equal to O and there are no currents through the diodes. This situation corresponds to the case when the KOHtaKTa connections of the controlled and the reference objects are equally fulfilled. If monitored object 3 has a type of communication defect, then the resistance of the circuit on the side of the monitored object is less than the resistance of the non-contact contact of the reference object and the potential of the point with is negatively biased, which causes current to flow through the diode DB. there is, in the controlled there is no), the potential of the point c turns out to be positively biased and a current flows through the diode Dd. Connected to the outputs of node 4, the measurement node responds to the appearance of current through the diodes (the direction of the potential at point c) and outputs the corresponding signals to the display unit (not shown in the drawing). If the offset point is absent, then the node 6 gives ognal to switch the switch 6.

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Claims (2)

-o Thus, the device provides verification of the installation of electrical circuits with the identification of the detected defect. Claims An apparatus for controlling electrical installation, including limiting resistors, an analysis unit, a base object, a switch and a measurement unit, whose outputs are connected respectively to the device’s output output and the control input of the switch, the output group of which is connected to the output group of the reference object and the first the group of inputs of the analysis node, the second group of inputs of which is connected to the group of inputs of the switch and the group of outputs of the object being monitored, is given by the fact that Considering the functionality of the device by providing identification of the type of the detected defect, the first and second groups of inputs of the measurement node are connected respectively to the first and second groups of signal outputs of the analysis node, which additionally contains rectifying diodes; each input of the first group of inputs of the analysis node is connected via two series-connected limiting resistors to the same input of the second group of inputs of the analysis node, and the same names of the first and second groups of signal outputs are connected to the common output of limiting resistors, respectively, directly and back. Sources of information taken into account in the examination 1. Authors (zhdetestvstvo USSR W 406186, M. KL. 005823 / 02,1971. 2. Authors certificate of the USSR N 377777, M. class. G 06F 11/04, 1970.