Catenary short-circuit detection-signalling system of an electric cable run.

摘要

Catenary short-circuit detection-signalling system of an electric cable run. This is designed for being used on railways and is characterized by having a plurality of sensors that are connected to the catenary 5, 5', which measure the voltage and are further connected by means of an optical fibre cable to a comparator 2, which in turn is capable of being connected to a substation that controls a plurality of comparators. There may be a plurality of substations connected in series that communicate with one another, each of which controls a plurality of comparators; at least one of the substations 3 is connected to a remote console 4 through which the threshold voltage value to be compared is programmed, below which an absence of voltage is indicated in the catenary, and in order to receive the different values of the voltages measured by the sensors 1. A sensor and a comparator are capable of operating independently in order to signal the voltage at a specified point of the catenary. <IMAGE>