Setting Values
Direction mode Forward
Reverse
–
Method of measurement Fundamental component
RMS value
–
Threshold value 1 A @ 50 and 100 Irated 0.030 A to 35.000 A Increments of 0.001 A
5 A @ 50 and 100 Irated 0.15 A to 175.00 A Increments of 0.01 A
1 A @ 1.6 Irated 0.001 A to 1.600 A Increments of 0.001 A
5 A @ 1.6 Irated 0.005 A to 8.000 A Increments of 0.001 A
Dropout Disk emulation
Instantaneous
–
Time multiplier 0.05 to 15.00 Increments of 0.01
X values of the operate curve 1.00 p. u. to 66.67 p. u. Increments of 0.01 p. u.
Y values of the operate curve 0.00 s to 999.00 s Increments of 0.01 s
Number of value pairs for the dropout characteristic
curve
2 to 30 Increments of 1
X values of the dropout characteristic curve 0.05 p. u. to 0.95 p. u. Increments of 0.01 p. u.
Y values of the dropout characteristic curve 0.00 s to 999.00 s Increments of 0.01 s
Dropout
The greater dropout differential (= | pickup value – dropout value |) of the following 2 criteria
applies:
Dropout
95 % of 1.1 ⋅ threshold value
Minimum absolute dropout differential
Protection-class current transformer 15 mA sec. (I
rated
= 1 A) or
75 mA sec. (I
rated
= 5 A)
Instrument current transformer 0.5 mA sec. (I
rated
= 1 A) or
2.5 mA sec. (I
rated
= 5 A)
Reset of the Integration Timer
Instantaneous
With dropout
Disk emulation Approx. < 0.90 ⋅ threshold value
Times
The maximum pickup time with operate delay = 0 ms
Approx. 30 ms + OOT at 50 Hz
Approx. 25 ms + OOT at 60 Hz
Extension of the operate time during operation with
inrush-current detection
Approx. 10 ms
Dropout time Approx. 20 ms + OOT
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 with reduced sensitivity
Technical Data
11.11 Directional Overcurrent Protection, Ground
SIPROTEC 5, High-Voltage Bay Controller, Manual 1157
C53000-G5040-C015-A, Edition 05.2018
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