APPARATUS FOR MONITORING OPERATING CHARACTERISTICS OF CIRCUIT BREAKER HAVING A STUDY FUNCTION

摘要

PURPOSE: A breaker operation feature monitoring device with a learning function is provided to diagnose a breaker by a trip coil current profile, thereby checking an abnormality cause of opening time. CONSTITUTION: A breaker(20) comprises an operating power source(VDD), a trip switch(21), a trip coil(22), an assistant a contact point(23), and an assistant b contact point(24). The trip switch is turned on by a trip signal of a relay. The trip switch is excited by turning the trip switch on. If the trip coil is excited, a main contact point is opened by moving a mover.