Siemens 7SJ85 - Stage with User-Defined Characteristic Curve

Disk emulation Approx. < 0.90 ⋅ threshold value
Operate Curves and Dropout Characteristic Curves According to IEC
Extension of the operate time during operation with
transformer inrush-current detection
Approx. 10 ms
The operate curves and dropout characteristic curves according to IEC can be found in the Technical Data
chapter under Inverse-Time Overcurrent Protection.
Operate Curves and Dropout Characteristic Curves According to ANSI/IEEE
The operate curves and dropout characteristic curves according to ANSI/IEEE can be found in the Technical
Data chapter under Inverse-Time Overcurrent Protection.
Frequency Operating Range
0.9 ≤ f/f
rated
≤ 1.1 According to specified tolerances
10 Hz ≤ f < 0.9 f
rated
1.1 f
rated
< f ≤ 80 Hz
Slightly expanded tolerances
f < 10 Hz
f > 80 Hz
Active
Tolerances
Currents, method of measurement = fundamental
component
1 % of the setting value or 5 mA (I
rated
= 1 A)
or 25 mA (I
rated
= 5 A), (f
rated
± 10 %)
Currents, method of measurement = RMS value
(33 % harmonics, in relation to fundamental component)
Up to 30th harmonic 1 % of the setting value or 5 mA (I
rated
= 1 A)
or 25 mA (I
rated
= 5 A), (f
rated
± 10 %)
Up to 50th harmonic, f
rated
= 50 Hz 3 % of the setting value or 20 mA (I
rated
= 1 A)
or 100 mA (I
rated
= 5 A), (f
rated
± 10 %)
Up to 50th harmonic, f
rated
= 60 Hz 4 % of the setting value or 20 mA (I
rated
= 1 A)
or 100 mA (I
rated
= 5 A), (f
rated
± 10 %)
Operate time for 2 ≤ I/I threshold value ≤ 20 5 % of the reference (calculated) value
+2 % current tolerance or 30 ms
Dropout time for I/I threshold value ≤ 0.90 5 % of the reference (calculated) value
+2 % current tolerance or 30 ms
Influencing Variables for Thresholds
Transient excess pickup in method of measurement =
fundamental component, for τ > 100 ms (with
complete unbalance)
< 5 %
Stage with User-Defined Characteristic Curve
Setting Values
Method of measurement
Fundamental component
RMS value
–
12.14.3
Technical Data
12.14 Overcurrent Protection, 1-Phase
1468 SIPROTEC 5, Overcurrent Protection, Manual
C53000-G5040-C017-8, Edition 07.2017