Apparatus for displaying thermal condition of motor controller

摘要: A method and apparatus for remotely displaying information about heat in a motor having an associated motor-starting contactor with overload relay system is provided. The includes suitably programmed microprocessor which obtains signal representative of current the motor, squares multiplies by time. This actual I 2 t value then used to calculate relationship between target at contacts will open due situation. preferably percentage displayed on either LED bar type display or digital display. may also include "trip" indicator "reset allowed" indicator.