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
; 3
I
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
ϕ
(
I
L1
-
I
L2
);
ϕ
(
I
L2
-
I
L3
);
ϕ
(
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
ϕ
(U
L1
-U
L2
);
ϕ
(U
L2
-U
L3
);
ϕ
(U
L3
-U
L1
) in °
Tolerance
1° at nominal voltage
Phase angle for voltages and currents
ϕ
(U
L1
-
I
L1
);
ϕ
(U
L2
-
I
L2
);
ϕ
(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
ϕ
)
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
ϕ
) in
range
≤
0.7
Operating measured value for power factor
cos
ϕ
Tolerance
0,02
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 | cos
ϕ
|
≥
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
DIFF3
I
0
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;
ϕ
diff
in °
