Event Records; Function Description; Voltage Events - Siemens SICAM 7KG85X Manual

6.4

Event Records

Function Description

6.4.1
Using the device you can record the following events:
•

Voltage events

•
Frequency events
•
Voltage unbalance events
Table 6-7
Measured Quantities
Va
Vb
Vc
Vab
Vbc
Vca
•
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
6.4.2
6.4.2.1 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.
SICAM, SICAM P850/P855 7KG85X, Manual
E50417-H1040-C482-A9, Edition 03.2022
Recording and Evaluation
Values
x
x
x
x
x
x
Power Quality
6.4 Event Records
125