CIRCUTOR QNA-P Series - Manual (Page 22)

Page no. 21
• Overvoltage hysteresis: An overvoltage hysteresis is to be defined so that
the voltage at the start of the overvoltage is not the same as the voltage at the
end. Therefore an overvoltage starts when the overvoltage threshold is
exceeded and ends when it is below the value defined by difference between
the overvoltage threshold and the overvoltage hysteresis.
• % Dip threshold: Detecting a dip will depend on the value that is set in this
section. For every half cycle that its effective value exceeds this defined value
(% above nominal voltage) it will be considered to be a dip. The events file
(EVQ) will record each time this value is not exceeded, showing the minimum
voltage recorded, average voltage, voltage prior to the event and the time
when this threshold was not exceeded.
• Dip hysteresis: A dip hysteresis is to be defined so that the voltage at the
start of the dip is not the same as the voltage at the end. Therefore a dip starts
when the dip threshold is not exceeded and ends when it is above the value
defined by adding the dip threshold and the dip hysteresis.
• % Interruption voltage threshold: This is defined as power off (no voltage,
Interruption) by voltage dropping below a fixed value (% above nominal
voltage). The events file (EVQ) will record each time this value is not
exceeded, showing the minimum voltage recorded, average voltage, voltage
prior to the event and the time when this threshold was not exceeded.
• Interruption Hysteresis: An interruption hysteresis is to be defined so that
the voltage at the start of the interruption is not the same as the voltage at the
end. Therefore an interruption starts when the interruption threshold is not
exceeded and ends when it is above the value defined by adding the
interruption threshold and the interruption hysteresis.
• Time of recording the STD file. This is the section of the memory for this file
and is expressed in days. The value cannot be changed. It will depend on the
period of recording and the capacity defined in the other files.
• Number of recordings for the EVE file. This is the section of the memory for
the events file and states the number of events.
• Number of recordings for the EVQ file. This is the section of the memory for
the events file and states the number of events.
• Size of H24 recording file: Indicates the size of the H24 file.
Default Maximum STD
(Value Calculated – Not configurable)
Time of recording STD file (*)
34 days 5 hours 92 days 2 hours
EVE file 1365 682
Number of recordings
EVQ file 2554 5626
Size of H24 file (in Kb): 264 (33 days) 8 (1 day)
(*) The STD file has been calculated with a recording period of 10 minutes and the
variables of the STD file as a default.
(**) Minimum configurable values.