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11.
PQ Configuration
Page 51 from 69
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 u
using the symmetrical components.
2
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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