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11.
PQ Configuration
Page 53 from 69
Limits
For the evaluation, both a limit value and a time period can be defined in which the limit value must be adhered to before a violation
occurs.
The maximum level of a mains signalling voltage depends on the selected frequency of the mains signalling voltage.
The max. limit value of this voltage is automatically generated based on the specifications of EN 50160 Fig. 1.
11.12 Rapid voltage changes
A rapid voltage change is when the voltage magnitude is at a nearly constant level for a period of time and suddenly a voltage change
occurs that significantly deviates from that level.
Limits
The voltage change level defines the limit from which height the deviation from the constant level is considered as a rapid voltage
change.
This limit is given in % of the nominal voltage.
In addition, a hysteresis can be defined for this value and a permissible number of rapid voltage changes in the selected observation
period.
In addition, a minimum and a maximum must be defined, above or below which the rapid voltage change is categorized as a dip or swell.
These values are identical with the thresholds of the latter.
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