System for detecting low voltage in an electric appliance

A system for detecting low voltage in an electric appliance having multiple loads ( 10 ) associated with drive switches ( 20 ) commanded by respective electronic controls ( 30 ) which are energized from a power source ( 40 ) connected to an electric network and which are operatively coupled to a command module ( 50 ). The system comprises: a compensating load ( 60 ), connected to the power source ( 40 ) and constructed to maintain constant the relation between the voltage of the electric network and the voltage of the power source ( 40 ), regardless of the number of loads ( 10 ) being energized; a control unit ( 70 ) associated with the command module ( 50 ) and with the compensating load ( 60 ), to define the current consumption to be produced by the compensating load ( 60 ), and a voltage sensing means (S) associated with the power source ( 40 ) and with the control unit ( 70 ) to promote the de-energization of the loads ( 10 ) when the voltage of the power source ( 40 ) is lower than a predetermined minimum value.