Six fundamental parameters of the UPS : Input Voltage and Frequency, Output Voltage and Load, Battery capacity are sampled at a period defined by the parameter History Log Interval in the page System Settings.

By default this period is ten seconds.

Each sample is dated and stored into a log based in the communication card.

Many log files corresponding to many time segments are used to limit the size of log files.

The Save Log button asks the operator to choose the .csv file where the log will be saved.

The Clear Log button deletes the log files in the communication card.