ELECTRICAL OPERATION INSTALLATION FOR CONVEYER BELTS

摘要

The invention relates to an electrical operation installation for one-circuit supply of two identical 6 kV asynchronous motors with short-circuited rotors which actuate a conveyer belt simultaneously. The claimed installation comprises two current transformers (f1 and f2) selected for the equivalent motor connected to the usual short-circuit and overload protection installations (I and I1) required for such motor, an additional current transformer (f4) to which an additional protective installation (I2) is connected in order to detect the individual overload condition of each of the operating motors, a test block (b1) which supplies the coils of some over and under relays and a signal relay (h1) transmitting pulses to the signalling installation (S).