Siemens SICAM 7KG85X - Page 51

Measured Quantities and Operational Measurement Uncertainty acc. to IEC 62586-1 Product Standard Class S and
Standards IEC 61000-4-30 Ed. 3, IEC 61000-4-7, and IEC 61000-4-15
Table 2-11 Measured Quantities and Their Operational Measurement Uncertainty
Measured Quantity Unit Measuring Range
Operational Measurement
Uncertainty acc. to
IEC 62586 Class S,
IEC 61000-4-30 Ed. 3,
IEC 61000-4-7,
IEC 61000-4-15
Frequency f Hz 50 Hz (±15 %):
42.5 Hz to 57.5 Hz
60 Hz (±15 %):
51.0 Hz to 69.0 Hz
±50 mHz
Power-system voltage > 2 V
required
Voltage V
ph-N/PE
(star) V 0 % to 120 % Udin ±0.2 % Udin
AC 63.5 V
AC 110 V
AC 230 V
AC 400 V
UL conditions： AC 347 V
Voltage V
ph-ph
(delta) V 0 % to 120 % Udin ±0.2 % Udin
AC 110 V
AC 190 V
AC 400 V
AC 690 V
UL conditions: AC 600 V
Flicker Pst, Plt – Pst, Plt: 0.4 to 4 Acc. to class S, IEC 61000-4-30:
Pst: ±10 %
Plt: ±10 %
Undervoltages (dips) and over-
voltages (swells) of the power-
system voltage
V, s – Amplitude: ±0.2 % of Udin
Duration: ±1 cycle
Voltage interruptions of the
power-system voltage
V, s – Duration: ±1 cycle
Voltage unbalance % – ±0.15 %
Harmonics of voltage H_xV
ph
% or V 10 % to 100 % acc. to
IEC 61000-2-4, class 3
IEC 61000-4-7, Class II:
Condition: Um ≥ 3 % of Udin
Maximum error: ±5 % of Um
Condition: Um < 3 % of Udin
Maximum error: ±0.15 % of
Udin
Harmonics of Current H_xI % or A Im ≥ 10 % Inom
Im < 10 % Inom
±5 % Im
±0.5 % Inom
Magnitude of current % 10 % FS to 100 % FS 0.2 %
Udin: Primary nominal voltage, corresponding to the primary rated voltage
Um: Measured value
u2: Value of negative-sequence system component V
FS: Full scale
Im: Measured value
Inom: Primary nominal current
Basic Functions
2.5 AC Measurement
50 SICAM, SICAM P850/P855 7KG85X, Manual
E50417-H1040-C482-A9, Edition 03.2022