In case of UPS with output single-phasis, eigth fundamental parameters are sampled : Input Voltage and Frequency, Output Voltage, Frequency, Power and Load, Battery capacity and Remaining time.
In case of UPS with output three-phasis, twelve fundamental parameters are sampled : Input Voltage, Frequency and Current, Output Voltage, Frequency, Apparent Power phase 1 to 3 and Active Power phase 1 to 3, Battery capacity.
The sampling period is defined by the parameter History Log Interval in the page System Settings.
By default this period is 60 seconds.
Each sample is dated and stored into a log based in the communication card.
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 file in the communication card.