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11. PQ Configuration
11.8 Voltage interruption
An interruption of the voltage is detected as soon as it falls below a certain threshold on all phases.
Limits
In addition to the threshold, a hysteresis can also be configured individually.
Additionally, a time duration can be defined, where an interruption is categorized as either short or long interruption.
It is also possible to define a permitted number of interruptions per category before it is categorized as a violation.
11.9 Unbalance
The unbalance of a three-phase system is represented by the quantity u2 using the symmetrical components.
This represents the ratio of the negative sequence component to the positive sequence component in percent.
Limits
In addition to the permitted maximum, a time period can be defined in which the limits must be observed before a violation occurs.
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