Stage With Definite-Time Characteristic Curve - Siemens Siprotec 5 7SS85 Techical Data

Technical Data

11.17 Stage with Definite-Time Characteristic Curve

11.17 Stage with Definite-Time Characteristic Curve
Setting Values
Method of measurement
Threshold value
Dropout ratio
Time delay
Dropout delay
Dropout
The greater dropout differential (= | pickup value – dropout value |) of the following 2 criteria
applies:
Dropout differential derived from the parameter Dropout ratio
If this parameter is not available, a dropout ratio of 95 % applies for overcurrent and of 105 % for undercur-
rent functionality.
Minimum absolute dropout differential
Protection-class current transformer
Instrument current transformer
Times
Operate time with time delay = 0 ms
Extension of the operate time during operation with
transformer inrush-current detection
Dropout time
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
3I0 measured via I4
fundamental component
20 If you have selected the method of measurement = RMS value, do not set the threshold value under 0.1 l
21 OOT (Output Operating Time) additional delay of the output medium used, see Chapter
22 Slightly expanded tolerances will occur during the calculation of 3I0, maximum factor of 2
588
1 A @ 100 Irated
20
5 A @ 100 Irated
rated
22 , method of measurement =
Fundamental component
RMS value
0.030 A to 35.000 A
0.15 A to 175.00 A
0.90 to 0.99
0.00 s to 60.00 s
0.00 s to 60.00 s
15 mA sec. (I = 1 A) or
rated
75 mA sec. (I = 5 A)
rated
0.5 mA sec. (I = 1 A) or
rated
2.5 mA sec. (I = 5 A)
rated
Approx. 25 ms + OOT 21 at 50 Hz
Approx. 22 ms + OOT at 60 Hz
Approx. 10 ms
Approx. 20 ms + OOT
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
11.1.4 Relay Outputs
SIPROTEC 5, Low-Impedance Busbar Protection 7SS85, Manual
C53000-G5040-C019-6, Edition 06.2016
–
Increments of 0.001 A
Increments of 0.01 A
Increments of 0.01
Increments of 0.01 s
Increments of 0.01 s
= 1 A)
rated
± 10 %)
.
rated,sec