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4 Measured Quantities and Recording
4.1 Power Quality Measuring System and Recording System
4.1.4
Mains Signalling Voltage
Mains signalling voltage (MSV) measurement is performed according to IEC 61000-4-30.
SICAM Q100 detects mains singalling frequencies from 100 Hz to 3 kHz. The threshold for detection and
capture is from 1 % up to 15 % of Udin.
The following data and values are determined during the evaluation of the mains signalling voltage in SICAM
Q100 and listed in the window Mains signalling voltage (see Chapter 8.4.2.3):
•
Time when mains signalling voltage starts to occur (time stamp with date and time)
•
The values of the affected phase (a, b, c, ab, bc, ca)
Detected time stamp
The mains signalling voltage will be recorded if the instantaneous value of the MSV (on the user-specified carrier
frequency) is higher than a given threshold voltage. The recorder will not end until the Total recording duration is
reached.
The 10/12 cycle values of voltages are recorded. For detailed information on calculation of mains signalling voltage ,
refer to IEC 61000-4-30.
Figure 4-2
32
Mains signalling voltage
Mains signalling voltage
Total recording duration
Pre-recording duration
Mains Signalling Voltage
Zoom
Detection threshold
Time
Detection threshold
Time
SICAM Q100, 7KG95xx, Device Manual
E50417-H1040-C522-A4, Edition 03.2018
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