EQUIPMENT FOR SELECTING, SWITCHING AND DISPLAYING THE TYPE OF VOLTAGES USED IN THE RAILWAY WAGGONS

摘要

The invention relates to an equipment for selecting, switching and displaying the supply voltage for some auxiliary services in a passenger waggon. According to the invention, the equipment consists of a circuit closer (1), a temperature fuse (2) of a selection block (3), a voltage transducer (4) for measuring the supply voltage from a main electric pipe and for sending a signal to a logic block with microprocessor (5), in order to establish the actual value and the voltage frequency, and transmitting the same to a controlling block (6), for controlling a switching block (8) for driving the a series of contacts, ensuring the voltage supplyng of a source (9) for auxiliary services, as well as some contacts (10 and 14) which, by means of the controlling block (6), supply some coils of some circuit closers (11 and 15), for the voltage supply of some heat resistors (R11...R16 and R21...R26), the voltage applied to the serially-connected resistors being measured by some voltage transducers (13 and 17), which also have the role of sending some signals for acknowledging the correct supply of the logic block with microprocessor (5) and then of the controlling block (6), in order to continue the voltage supply, the information regarding the type of the supply voltage, the correct functioning of the switching block (8), the integrity of the heat resistors (R11...R16 and R21...R26), being sent by the logic block with microprocessor (5) , to a displaying block (18) and to a control panel existant in the waggon, and also to a central signalling panel.