Directional Overcurrent Protection, Phases - Siemens SIPROTEC 5 Technical Data Manual

11.10

Directional Overcurrent Protection, Phases

Stage with Definite-Time Characteristic Curve
11.10.1
Setting Values
Rotation angle of the reference voltage
Directional mode
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
Direction Determination
Type
Forward range
Dropout differential forward/reverse range
Directional sensitivity
Times
Operate time with time delay = 0 ms
59 If you have selected the method of measurement = RMS value, do not set the threshold value under 0.1 l
60 OOT (Output Operating Time): additional delay of the output medium used, for example 5 ms with fast relays
SIPROTEC 5, High-Voltage Bay Controller, Manual
C53000-G5040-C015-A, Edition 05.2018
1 A @ 50 and 100 Irated
59
5 A @ 50 and 100 Irated
1 A @ 1.6 Irated
5 A @ 1.6 Irated
11.10 Directional Overcurrent Protection, Phases
-180° to +180°
Forward
Reverse
Fundamental component
RMS value
0.030 A to 35.000 A
0.15 A to 175.00 A
0.001 A to 1.600 A
0.005 A to 8.000 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
With healthy voltages
With voltage memory 2 s
V ±88°
ref,rot
1°
Unlimited for 1 and 2-phase short circuits
Dynamically unlimited, stationary for 3-phase short
circuits
Approx. 13 V phase-to-phase
Approx. 37 ms + OOT 60 at 50 Hz
Approx. 22 ms + OOT at 60 Hz
Technical Data
Increments of 1°
–
–
Increments of 0.001 A
Increments of 0.01 A
Increments of 0.001 A
Increments of 0.001 A
Increments of 0.01
Increments of 0.01 s
Increments of 0.01 s
.
rated,sec
1143