Siemens SIPROTEC 4 7UT6 Series Manual page 280

Functions
2.22 Auxiliary Functions
Measured Values
ΙX1; ΙX2; ΙX3
5)
ΙX4
Ι1 to Ι9 3)
Ι10 to Ι12
3) 5)
UL1E; UL2E; UL3E 1) 4)
UL12; UL23; UL31 1) 4)
U1; U2; U0 2) 4)
Uen 4)
U4 4)
S, P, Q 1) 4)
f
cos φ 1) 4)
Umess 6)
S 7)
U/f 4)
1) only for 3-phase objects, also for single-phase transformers
2) only for 3-phase objects, not for single-phase transformers
3) only for single-phase busbar protection
4) only for 7UT613 and 7UT633 with voltage measuring inputs
5) only for 7UT635
6) if configured and prepared in CFC
7) calculated from phase currents and rated voltage or measured voltage U
In addition to the measured and calculated values at the measuring locations, measured values are output at
the sides of the main protected object. This makes if possible to obtain the data relevant for the protected
object, even if they are fed to the protected object from several measuring locations, as for example the
higher voltage side (S1) of the transformer. Also, relative values are always referred to a specific side of the
protected object. A current which does not flow into the object from 2 measuring locations (e. g. a current
flowing from one busbar through M1 and M2 to the other busbar) is theoretically zero because no current
flows into the protected object.
Table 2-13 summarizes the operational measured values that are assigned to the sides. Depending on the
device's order number, connection type, topology and protection functions configured, only a part of the
magnitudes listed there is available. The table does not apply to the single-phase busbar protection, since no
sides are defined there.
280
Currents at the 1-phase further meas-
uring locations X1 to X3
Current at the further measuring loca-
tion X4 5)
Currents at the measuring inputs
Currents at the measuring inputs
Phase-to-earth voltages at the 3- phase
voltage measuring location
Phase-to-phase voltages at the 3- phase
voltage measuring location
Positive, negative and zero sequence
component of the voltages at the 3-
phase voltage measuring location
Displacement voltage if connected to
the 1-phase voltage measuring input
Voltage at the 1-phase voltage meas-
uring input 4)
Apparent, active and reactive power
4)
Frequency
Power factor 1) 4)
Voltage from the current measured at
the 1-phase measuring input
Apparent power 7)
Overexcitation 4)
Primary Secondary
A; kA
A; kA
A; kA
3)
A; kA
3) 5)
V; kV; MV
1) 4)
V; kV; MV
1) 4)
V; kV; MV
2) 4)
—
4)
V; kV; MV
MVA,
1)
MW,
kVA; kW
Hz
(abs)
V; kV; MV
6)
kVA;
MVA
U /f
N N
% referred to
A - - if allocated to side → see
measured value "ΙLxSy"
- if allocated to measuring
A
location → see measured
value "ΙLxMz"
- if not allocated → then "ΙN-
PRI WDL ΙX1..4"
A Rated operational current
A Rated operational current
V Operational rated voltage/√3
V Betriebsnennspannung
V Operational rated voltage/√3
V Operational rated voltage
V Operational rated voltage
— Operational rated apparent
power
Hz Rated frequency
— (abs)
— —
— —
— U /f
N N
mess
SIPROTEC 4, 7UT6x, Manual
C53000-G1176-C230-5, Edition 09.2016