DEVICE FOR FAULT FINDING IN SYSTEM OF CONTROL OVER VALVES Russian patent published in 1994 - IPC

FIELD: electrical engineering. SUBSTANCE: channel by channel monitoring of state of output keys of control pulse amplifiers is conducted continuously in process of operation simultaneously with control over state of secondary side of potential separators by presence of control pulse in its circuit. In case of malfunction of error condition of any of monitored parameters timely disconnection of power supply source from faulty circuits takes place which prevents formation of output voltage of decreased quality, failure of power supply source itself or output keys of control pulse amplifiers. EFFECT: enhanced reliability and safety of operation of valves. 4 dwg