Siemens SIPROTEC 7SD610 Manual page 251

Table 2-11 Operational measured values of the local device
Measured Values
I ; I ; I Phase currents
L1 L2 L3
3I Earth current
0
-I ), ϕ(I -I ), Phase angle of the phase currents
ϕ(I
L1 L2 L2 L3
-I ) towards each other
ϕ(I
L3 L1
I , I Positive and negative sequence cur-
1 2
rents
Transformer starpoint current
I
Y
U , U , U Phase-to-phase voltages
L1-L2 L2-L3 L3-L1
U , U , U Phase-earth voltage
L1-E L2-E L3-E
3U Displacement Voltage
0
-U ), ϕ(U -U ), Phase angle of the phase voltages
ϕ(U
L1 L2 L2 L3
-U ) towards each other
ϕ(U
L3 L1
-I ), ϕ(U -I ), Phase angle of the phase voltages
ϕ(U
L1 L1 L2 L2
-I ) towards the phase currents
ϕ(U
L3 L3
U , U Positive and negative sequence com-
1 2
ponent of the voltages
U , U Voltage at measuring input U
X EN
U Positive sequence component of volt-
1compound
ages at the remote end (if compound-
ing is active in voltage protection)
S, P, Q Apparent, active and reactive power
cos ϕ Power factor
f Frequency (constellation frequency)
/Θ , Θ /Θ , Thermal value of each phase,
Θ
L1 TRIP L2 TRIP
/Θ referred to the tripping value
Θ
L3 TRIP
Resulting thermal value,
Θ/Θ
TRIP
referred to the tripping value, calculat-
ed according to the set method
1)
according to address 1104
2)
according to address 1103
3)
considering factor 221 I4/Iph CT
SIPROTEC, 7SD610, Manual
C53000-G1176-C145-6, Release date 02.2011
Primary Second-
ary
A
A
°
A
A
kV
kV
kV
°
°
kV
–
4
kV
MVA,
MW,
MVAR
(abs) (abs)
Hz Hz
%
%
2.17 Additional Functions
% Referred to
A Nominal operational current
A Nominal operational current
– –
A Nominal operational current
A Nominal operational current
V Nominal operational voltage
V Rated operational voltage / √3
V Rated operational voltage / √3
– –
– –
V Rated operational voltage / √3
V –
V Operational rated voltage / √3
– ·I Nominal operational
√3·U
N N
quantities
–
Nominal Frequency
– Trip overtemperature
– Trip overtemperature
Functions
1)
1)
1)
1)3)
2)
2)
2)
2)
2)
1)2)
251