Parameter: Neutr.point in dir.of ref.obj
•
Default setting
(_:8881:116) Neutr.point in dir.of ref.obj
=
yes
The
Neutr.point in dir.of ref.obj
parameter is used to set the direction of the neutral point of the
current transformer (see following figure). Often, the neutral point of the current transformer is determined
by the direction of the protected object (for example, in the direction of the line, cable, transformer). For this
reason, the default setting of the parameter was defined as
yes
.
When switching the parameter, the direction of the phase currents and of the ground current IN or IN-sepa-
rate is rotated device-internally.
[dwpolstromwdl-251013, 1, en_US]
Figure 5-3
Polarity of Current Transformers
Parameter: Inverted phases
•
Default setting
(_:8881:114) Inverted phases
=
none
The
Inverted phases
parameter is intended for special applications, for example, pumped-storage hydro-
power plants (see Chapter Phase-rotation reversal). This default setting may be retained for power-system
protection applications.
Parameter: Magnitude correction
•
Default setting
(_:3841:103) Magnitude correction
=
1.000
When using the
Magnitude correction
parameter, you adjust the magnitude (magnitude correction) for
the current input. This allows you to correct the tolerances of the primary current transformer phase-selec-
tively. The magnitude correction may be required for highly precise measurements. Use a comparison meas-
urement to determine the setting value (for example, with a high-precision measuring-voltage transformer). If
a primary correction is not necessary, retain the default setting.
i
i
NOTE
The
Magnitude correction
parameter has nothing to do with the internal adjustment of the input
circuit.
You will find more parameters in chapter
Note Regarding Routable Data
Indications for the current rotating field can be found in Information routing under Power system →
General in DIGSI 5. The indication
Freq.out of oper.range
means that the frequency operating range
Function-Group Types
5.1 Power-System Data
188
SIPROTEC 5, High-Voltage Bay Controller, Manual
C53000-G5040-C015-9, Edition 11.2017
Summary of Contents for 6MD85
Page 8: ...8 SIPROTEC 5 High Voltage Bay Controller Manual C53000 G5040 C015 9 Edition 11 2017 ...
Page 30: ...30 SIPROTEC 5 High Voltage Bay Controller Manual C53000 G5040 C015 9 Edition 11 2017 ...
Page 46: ...46 SIPROTEC 5 High Voltage Bay Controller Manual C53000 G5040 C015 9 Edition 11 2017 ...
Page 172: ...172 SIPROTEC 5 High Voltage Bay Controller Manual C53000 G5040 C015 9 Edition 11 2017 ...
Page 514: ...514 SIPROTEC 5 High Voltage Bay Controller Manual C53000 G5040 C015 9 Edition 11 2017 ...
Page 1056: ...1056 SIPROTEC 5 High Voltage Bay Controller Manual C53000 G5040 C015 9 Edition 11 2017 ...
Page 1092: ...1092 SIPROTEC 5 High Voltage Bay Controller Manual C53000 G5040 C015 9 Edition 11 2017 ...
Page 1204: ...1204 SIPROTEC 5 High Voltage Bay Controller Manual C53000 G5040 C015 9 Edition 11 2017 ...
Page 1238: ...1238 SIPROTEC 5 High Voltage Bay Controller Manual C53000 G5040 C015 9 Edition 11 2017 ...
Page 1252: ...1252 SIPROTEC 5 High Voltage Bay Controller Manual C53000 G5040 C015 9 Edition 11 2017 ...
Page 1256: ...1256 SIPROTEC 5 High Voltage Bay Controller Manual C53000 G5040 C015 9 Edition 11 2017 ...