Siemens SICAM Q100 - Accuracy of the Frequency Measurement

4 Measured Quantities and Recording
4.3 Display of Measured Quantities
78 SICAM Q100, 7KG95xx, Device Manual
E50417-H1040-C522-A4, Edition 03.2018
4.3.3 Accuracy of the Frequency Measurement
Table 4-21 Accuracy of the Frequency Measurement
Circuit Accuracy
Voltage to V
a-N
0 V to 2 V: invalid
> 2 V: 10 mHz
Voltage to V
b-N
Voltage to V
c-N
NOTE
The frequency measurement is carried out as software frequency measurement (V
a-N
, V
b-N
, V
c-N
> 2 V).
The frequency will be measured first at the measuring circuit V
a-N
.
If the voltage V
a-N
is < 2 V, the measurement is performed automatically at the measuring circuit V
b-N
.
If the voltage V
b-N
is < 2 V, the measurement is performed automatically at the measuring circuit V
c-
N
.
If none of the voltages is > 2 V, the frequency measurement is invalid.