Electronic trip device equipped with monitoring means and corresponding monitoring method

摘要

The device has a current sensor (4) to supply a signal representative of a current intensity in a main conductor. An actuator (6) actuates an opening mechanism of contacts in series with the conductor. An electronic processing unit (5) controls the actuator based on the signal values. The unit has a monitoring unit to monitor the state of connections of the sensor and/or actuator, and a display unit (32) to display an operating state of the device. The monitoring unit acts on the display unit to display the connection state, while maintaining processing to control the actuator. An independent claim is also included for a method for monitoring the state of connections of an electronic trip device.