DEVICE AND METHOD FOR TESTING THE OPERATION OF A PROTECTIVE APPARATUS AND PROTECTIVE APPARATUS COMPRISING SUCH A DEVICE FOR TESTING

摘要

The invention relates to a device for testing (1) the operation of a protective device (2) of an electrical network. The test device comprises: - a generator (6) for generating a pulse train (65) in a secondary winding of a current transformer (3) according to a frequency profile such as a measurement of the pulse train (65) after passing through a low-pass filter (44) is less than a selected trigger threshold (Sd), and - a processing circuit (7) arranged to identify a presence of the pulse train (65) in a signal delivered by a second secondary winding of the current transformer. The invention also relates to a protection device (2) comprising such a test device (1) and to a method of testing an electrical protection device.