Technical Data
4.26 Additional Functions
SIPROTEC, 7SD5, Manual
C53000-G1176-C169-5, Release date 02.2011
634
4.26 Additional Functions
Measured values
Operational measured values for currents I
L1
; I
L2
; I
L3
; 3I
0
; I
1
; I
2
; I
Y
; I
P;
I
EE
in A primary and secondary, and in % of I
NOperation
Tolerance 0.5 % of measured value, or 0.5 % of I
N
Phase angles for currents Ï•(I
L1
-I
L2
); Ï•(I
L2
-I
L3
); Ï•(I
L3
-I
L1
) in °
Tolerance 1° at nominal current
Operational measured values for voltages U
L1-E
, U
L2-E
, U
L3-E
; 3U
0
; U
0
; U
1
; U
2
; U
1Ko
in kV primary, in V secondary, or in % of U
NOperation
/√3
Tolerance 0.5 % of measured value, or 0.5 % of U
N
Operational measured values for voltages U
EN
; U
X
in V secondary
Tolerance 0.5 % of measured value, or 0.5 % of U
N
Operational measured values for voltages U
L1-L2
, U
L2-L3
, U
L3-L1
in kV primary, in V secondary, or in % of U
NOperation
Tolerance 0.5 % of measured value, or 0.5 % of U
N
Phase angle for voltages Ï•(U
L1
-U
L2
); Ï•(U
L2
-U
L3
); Ï•(U
L3
-U
L1
) in °
Tolerance 1° at nominal voltage
Phase angle for voltages and currents Ï•(U
L1
-I
L1
); Ï•(U
L2
-I
L2
); Ï•(U
L3
-I
L3
) in °
Tolerance 1° at nominal voltage and nominal current
Operational measured values for impedances R
L1-L2
, R
L2-L3
, R
L3-L1
, R
L1-E
, R
L2-E
, R
L3-E
,
X
L1-L2
, X
L2-L3
, X
L3-L1
, X
L1-E
, X
L2-E
, X
L3-E
in Ω primary and secondary
Operational measured values for power S; P; Q (apparent, active, and reactive power)
in MVA; MW; Mvar primary and % S
N
(operational nominal power) = √3 · U
N
· I
N
Tolerance for S 1 % of S
N
at I/I
N
and U/U
N
in range 50 % to 120 %
Tolerance for P 1 % of P
N
at I/I
N
and U/U
N
in range 50 % to 120 % and ABS(cos Ï•)
in range ≥ 0.7
Tolerance for Q 1 % of Q
N
at I/I
N
and U/U
N
in range 50 to 120 % and ABS(cos Ï•) in
range ≤ 0.7
Operating measured value for power factor cos Ï•
Tol e ra nce 0,0 2
Counter values for energy W
p
+, W
q
+; W
p
-; W
q
- (active and reactive energy)
in kWh (MWh or GWh) or
in kVARh (MVARh or GVARh)
Tolerance at nominal frequency 5 % for I > 0.5 I
N
, U > 0.5 U
N
and | cosϕ | ≥ 0.707
Operational measured values of frequency f in Hz and % of f
N
Range 10 Hz to 75 Hz
Tolerance 20 mHz in range f
N
± 10 % at nominal values
Measured values of the differential protection I
DIFFL1
; I
DIFFL2
; I
DIFFL3
;
I
StabL1
; I
StabL2
; I
StabL3
;
I
CL1
; I
CL2
; I
CL3
;
I
DIFF3I0
in % I
NOperation
Thermal measured values Θ
L1
/Θ
TRIP
; Θ
L2
/Θ
TRIP
; Θ
L3
/Θ
TRIP
; Θ/Θ
TRIP
related to tripping temperature rise
Operational measured values for synchro check U
sy1
; U
sy2
; U
diff
in kV primary
f
sy1
; f
sy2
; f
diff
in Hz;
Ï•
diff
in °
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