Power Quality Logger
Methods of Logging
Voltage InterruptionsThe Logger records two types of interruptions:
•All measured RMS values of input voltages that are < 1% of the nominal voltage. (This threshold can be adjusted in PQ Log.)
•Interruptions > 10 ms (0.5 line power periods).
The start time and duration of each interruption are registered.
110% Un
100% Un
90% Un
1%
Duration
Time
egb018.eps
Figure 15. Voltage Interruption
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