Siemens Siprotec 5 7SS85 Techical Data page 42

Technical Data
11.16 Stage with Inverse-Time Characteristic Curve
[dwocpka4-080213-01.tif, 2, en_US]
Figure 11-6
Frequency Operating Range
0.9 ≤ f/f ≤ 1.1
rated
10 Hz ≤ f < 0.9 f
1.1 f < f ≤ 80 Hz
rated
f < 10 Hz
f > 80 Hz
Tolerances
Currents, method of measurement = fundamental
component
Currents, method of measurement = RMS value
(33% harmonics, in relation to fundamental component)
Up to 30th harmonic
Up to 50th harmonic, f
Up to 50th harmonic, f
Operate time for 2 ≤ I/I threshold value ≤ 20
Dropout time for I/I threshold value ≤ 0.90
586
Operate Curves and Dropout-Time Characteristic Curves According to ANSI/IEEE
rated
= 50 Hz
rated
= 60 Hz
rated
According to specified tolerances
Slightly expanded tolerances
Active
1 % of the setting value or 5 mA (I
or 25 mA (I = 5 A), (f
rated rated
1 % of the setting value or 5 mA (I
or 25 mA (I = 5 A), (f
rated rated
3 % of the setting value or 20 mA (I
or 100 mA (I = 5 A), (f
rated rated
4 % of the setting value or 20 mA (I
or 100 mA (I = 5 A), (f
rated rated
5 % of the reference (calculated) value
+2 % current tolerance or 30 ms
5 % of the reference (calculated) value
+2 % current tolerance or 30 ms
SIPROTEC 5, Low-Impedance Busbar Protection 7SS85, Manual
C53000-G5040-C019-6, Edition 06.2016
= 1 A)
rated
± 10 %)
= 1 A)
rated
± 10 %)
= 1 A)
rated
± 10 %)
= 1 A)
rated
± 10 %)