Siemens SICAM 7KG85X Manual page 51

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