Event Records
Function Description
Using the device you can record the following events:
•
Voltage events
•
Frequency events
•
Voltage unbalance events
Table 6-7 Recording and Evaluation
Measured Quantities Values
Va x
Vb x
Vc x
Vab x
Vbc x
Vca x
•
Interfaces: protocols IEC 61850 and Modbus TCP, HTML, display determining overvoltage, undervoltage
and voltage interruption according to EN 50160 (only SICAM P855), for example.
Voltage Events
Function Description
The device detects voltage events (dips, swells, interruptions) based on 1/2-cycle RMS values according to
IEC 61000-4-30 Edition 3.0.
The device works as follows:
•
It determines the start of events with the threshold value.
All thresholds are related to the primary nominal voltage.
•
It determines the end of voltage events with the voltage considering the hysteresis of the preset
threshold.
6.4
6.4.1
6.4.2
6.4.2.1
Power Quality
6.4 Event Records
SICAM, SICAM P850/P855 7KG85X, Manual 125
E50417-H1040-C482-A9, Edition 03.2022
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