Siemens SICAM Q100 7KG95 Series Manual page 231

The default values of thresholds are defined and assigned to the measured values as shown in Table 2-3. You
can change the assignment in the mapping file, see Figure 9-67.
Table 9-28
Group
AC voltage
AC current
Power
Power factor
Frequency
Percentage value
Voltage harmonics
Current harmonics
Harmonics power
The threshold processing uses a combination of the following methods:
• Fixed

If the difference percentage is larger than the configured threshold (in positive direction or negative
direction), a measured value is immediately transmitted.

The difference percentage = (Current value - last transmitted value)/last transmitted value
• Integrated

If the rolling difference percentage exceeds the configured threshold, a measured value is transmitted.

The configured integration interval (5 s or its multiplies) decides when the measured value is
transmitted. The following list shows examples.

If the percentage of the measured-value change is in the configured threshold, a change of the
measured value is transmitted after 5 s.

If the percentage of the measured-value change is twice the configured threshold, a change of the
measured value is transmitted after 10 s.
SICAM Q100, 7KG95xx, Device Manual
E50417-H1040-C522-A6, Edition 06.2019
Default Values of Thresholds for Operation Values and Harmonics
Descriptions
Threshold value for voltages (Vx, Vxy)
Threshold value for currents (Ix, Ixy)
Threshold value for power values (P, Q, S)
Threshold value for power-factor values
Threshold value for frequencies
Threshold value for percentage values
(Neg. seq. comp., Zero seq. comp., THDR)
Threshold value for voltage harmonics
Threshold value for current harmonics
Threshold value for harmonics power
9 Operation at Use of a PC
9.3 Configuration of the Device
Threshold
5 % (of the last transmitted value)
5 % (of the last transmitted value)
5 % (of the last transmitted value)
5 % (of the last transmitted value)
0.05 % (of the last transmitted value)
5 % (of the last transmitted value)
5 % (of the last transmitted value)
5 % (of the last transmitted value)
5 % (of the last transmitted value)
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