30° -30°
Parameter: Polarization with
•
Recommended setting value (_:2311:104) Polarization with = zero sequence
This parameter is not available in the basic function. The basic function uses always zero-sequence compo-
nents for the direction determination.
You use the parameter Polarization with to select the values for the direction determination.
Parameter Value Description
zero sequence
Select zero sequence to determine the direction via the zero-sequence
components V0 and 3I0.
Siemens recommends using the zero-sequence components for the direction
determination.
negative sequence
Select negative sequence to determine the direction via the negative-
sequence components V2 and I2.
The negative-sequence system can be used in case of danger that the zero-
sequence voltage is too small due to unfavorable zero-sequence impedance
conditions or that a parallel line influences the zero-sequence system.
Input Signal:
>Test of direction
If you activate the binary input signal
>Test of direction
, the direction is determined and indicated even
without the current threshold being exceeded in one of the stages. This provides an easy means of checking
the direction during commissioning, without changing the threshold values of the stages.
Settings
Addr.
Parameter C Setting Options Default Setting
General
_:2311:9 General:Measured value
•
3I0 calculated
•
IN measured
IN measured
_:2311:101 General:Min. voltage V0
or V2
0.150 V to 20.000 V 2.000 V
_:2311:102 General:Rotation angle
of ref. volt.
-180 ° to 180 ° -45 °
_:2311:103 General:Forward section
+/-
0 ° to 90 ° 88 °
_:2311:104 General:Polarization
with
•
zero sequence
•
negative sequence
zero sequence
7.7.3.4
Protection and Automation Functions
7.7 Directional Overcurrent Protection, Ground
SIPROTEC 5, High-Voltage Bay Controller, Manual 707
C53000-G5040-C015-9, Edition 11.2017
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