Siemens SIPROTEC 4 7UT6 Series Manual page 281

Differential protection
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Table 2-13
Measured Values
ΙL1S1, ΙL2S1, ΙL3S1
ΙL1S2, ΙL2S2, ΙL3S2
1)
ΙL1S3, ΙL2S3, ΙL3S3
Ι1S1, Ι2S1, 3Ι0S1
Ι1S2, Ι2S2, 3Ι0S2
Ι1S3, Ι2S3, 3Ι0S3
2)
ΙL1S4, ΙL2S4, ΙL3S4
1) 3)
ΙL1S5, ΙL2S5, ΙL3S5
Ι1S4, Ι2S4, 3Ι0S4
Ι1S5, Ι2S5, 3Ι0S5
2) 3)
1)
only for 3-phase protected objects, also single-phase transformers (not in 7UT612)
2)
only for 3-phase protected objects, not for single-phase transformers (not in 7UT612)
3)
only for 7UT635
The phase angles are listed separately in
(current in phase L1 at measuring location M1), which has thus a phase angle = 0°. With 1-phase busbar
Ι
L1M1
protection, the current Ι
Depending on the device's order number, connection type, topology and protection functions configured, only
a part of the phase angles listed there is available.
Phase angles are indicated in degrees. Since further processing of such values (in CFC or when transmitted
through serial interfaces) requires values without dimension, arbitrary references have been chosen, which
are contained in
Table 2-14
φΙL1M1, φΙL2M1, φΙL3M1
φΙL1M2, φΙL2M2, φΙL3M2
φΙL1M3, φΙL2M3, φΙL3M3
φΙL1M4, φΙL2M4, φΙL3M4
φΙL1M5, φΙL2M5, φΙL3M5
φΙX1; φΙX2; φΙX3
φΙX4
5)
φΙ1 to φΙ9
3)
φΙ10 to φΙ12
3) 5)
φUL1E; φUL2E; φUL3E
1) 4)
φUen
4)
φU4
4)
SIPROTEC 4, 7UT6x, Manual
C53000-G1176-C230-5, Edition 09.2016
Operational measured values (magnitudes) of the sides
Phase currents flowing in from the
sides S1 to S3
1)
Positive, negative and zero sequence
component of the currents at the sides
S1 to S3
2)
Phase currents flowing in from the
sides S4 to S5
1) 3)
Positive, negative and zero sequence
component of the currents at the sides
S4 to S5
2) 3)
Table
has the phase angle 0°, i.e. it is the reference value.
1
Table 2-14
in the column "% Conversion".
Operational measured values (phase relationship)
Measured Values
Phase angle of the currents at the measuring
locations M1 to M3, referred to ΙL1 M1
1)
Phase angle of the currents at the measuring
locations M1 to M3, referred to ΙL1M1
1) 5)
Currents at the 1-phase further measuring loca-
tions X1 to X3, referred to ΙL1M13
Currents at the 1-phase auxiliary measuring loca-
tion X4, referred to ΙL1M1
Phase angle of the currents at the current inputs,
referred to Ι1
3)
Phase angle of the currents at the current inputs,
referred to Ι1
3) 5)
Phase angle of the voltages at the 3-phase
voltage measuring location, referred to ΙL1M1
bzw. Ι1
1) 4)
Phase angle of the voltages at the 1-phase
voltage measuring location, referred toΙL1M1
bzw. Ι1
4)
Phase angle of the voltages at the 1-phase
voltage measuring location, referred to ΙL1M1
bzw. Ι1
4)
Primary
Secondary
A; kA
A; kA
A; kA
A; kA
2-14. The reference value for 3-phase objects is the current
1)
1) 5)
5)
2.22 Auxiliary Functions
% referred to
Rated operating current of
the respective side
Rated operating current of
the respective side
Rated operating current of
the respective side
Rated operating current of
the respective side
Dimension
% Conversion
˚
0˚ = 0 %
360˚ = 100 %
˚
0˚ = 0 %
360˚ = 100 %
˚
0˚ = 0 %
360˚ = 100 %
˚
0˚ = 0 %
360˚ = 100 %
˚
0˚ = 0 %
360˚ = 100 %
˚
0˚ = 0 %
360˚ = 100 %
˚
0˚ = 0 %
360˚ = 100 %
˚
0˚ = 0 %
360˚ = 100 %
˚
0˚ = 0 %
360˚ = 100 %
Functions
6)
281

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