The recordings can be deleted individually or all at once.
Individual disturbance recordings can be deleted with PCM600 or any appropriate computer software, which can access the protection relay's COMTRADE folder. The disturbance recording is not removed from the protection relay's memory until both of the corresponding COMTRADE files, .CFG and .DAT, are deleted. Both file types may need to be deleted separately, depending on the software used.
Deleting all disturbance recordings at once is done either with PCM600 or any appropriate computer software, or from the LHMI via the menu. Deleting all disturbance recordings at once also clears the pre-trigger recording in progress.