Operational Measured Values and Statistical Values
The following applies to the tolerances of currents and voltages:
•
The values apply both to the RMS values and the absolute value and phase angle of the fundamental
components.
•
The values were determined for pure sinusoidal signals – without harmonics.
•
All measured values have an additional tolerance of 1 DIGIT.
Voltages
V
A
, V
B
, V
C
Voltage range
V secondary
< 200 V secondary
Secondary rated voltage
Measuring range
Frequency range
100 V to 125 V
(0.1 to 2) · V
rated
49 Hz to 51 Hz at f
rated
= 50 Hz
59 Hz to 61 Hz at f
rated
= 60 Hz
Tolerance
0.2 % of the measured value in the above-mentioned
measuring range
Frequency range (expanded)
45 Hz to 55 Hz at f
rated
= 50 Hz
55 Hz to 65 Hz at f
rated
= 60 Hz
Tolerance
0.3 % of the measured value in the above-mentioned
measuring range
V
AB
, V
BC
, V
CA
Voltage range
V secondary
< 200 V
Secondary rated voltage
Measuring range
Frequency range
100 V to 125 V
(0.1 to 2) · V
rated
49 Hz to 51 Hz at f
rated
= 50 Hz
59 Hz to 61 Hz at f
rated
= 60 Hz
Tolerance
0.2 % of the measured value in the above-mentioned
measuring range
Frequency range (expanded)
45 Hz to 55 Hz at f
rated
= 50 Hz
55 Hz to 65 Hz at f
rated
= 60 Hz
Tolerance
0.3 % of the measured value in the above-mentioned
measuring range
Currents, Protection-Class Current Transformer
Feeder currents I
A
, I
B
, I
C
, 3I
0
Differential currents (of all busbar sections and the
check zone) I
dA
, I
dB
, I
dC
Restraint currents (of all busbar sections and the
check zone) I
sA
, I
sB
, I
sC
A secondary
% I
rated
% I
rated
Rated currents
Measuring range
Frequency range
1 A, 5 A
(0.1 to 5) · I
rated
49 Hz to 51 Hz at f
rated
= 50 Hz
59 Hz to 61 Hz at f
rated
= 60 Hz
Tolerance
0.2 % of the measured value in the above-mentioned
measuring range
11.33
Technical Data
11.33 Operational Measured Values and Statistical Values
SIPROTEC 5, Low-Impedance Busbar Protection, Manual
985
C53000-G5040-C019-C, Edition 04.2021
