4 Technical Data
484
7SA522 Manual
C53000-G1176-C155-3
4.22 Auxiliary Functions
Measured Values
Operational measured values for currents I
L1
; I
L2
; I
L3
; 3I
0
; I
1
; I
2
; I
Y
; I
P
in A primary and secondary and in % I
N
Tolerance 1 % of measured value, or 0.5 % of I
N
Operational measured values for voltages U
L1-E
, U
L2-E
, U
L3-E
; U
X
in kV primary, in V secondary or in % of U
N
/√3
Tolerance 0.5 % of measured value, or 0.5 % of U
N
Operational measured values for voltages 3U
0
in kV primary, in V secondary or in % of U
N
/√3
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
, U
X
, U
1
; U
2
; U
1Ko
in kV primary, in V secondary or in % of U
N
Tolerance 0.5 % of measured value, or 0.5 % of U
N
Operational measured values of 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 1 % of S
N
at I/I
N
and U/U
N
from 50 to 120%
1% of P
N
at I/I
N
and U/U
N
from 50 to 120% and ABS (cosϕ)
from 0.7 to 1
1% of Q
N
at I/I
N
and U/U
N
from 50 to 120% and ABS (cosϕ)
from 0.7 to 1
Operating measured value for power factor cos Ï•
Tolera nc e 0,02
Counter values for energy Wp, Wq (real and reactive energy)
In kWh (MWh or GWh) and
In kVARh (MVARh or GVARh)
Tolerance
1)
5 % for I > 0.5 I
N
, U > 0.5 U
N
and | cosϕ | ≥ 0.707
Operating measured values for frequency f in Hz and % f
N
Range 94 % to 106 % of f
N
Tolerance 10 mHz and 0.2 %
Operational measured values for synchro check U
line
, U
sync
, U
diff
f
line
, f
sync
, f
diff
in Hz;
Ï•
diff
in °
Long-term mean value I
L1
dmd; I
L2
dmd; I
L3
dmd; I
1d
md;
Pdmd; Pdmd Forw, Pdmd Rev;
Qdmd; Qdmd Forw; Qdmd Rev;
Sdmd
In primary values
Minimum and maximum values I
L1
; I
L2
; I
L3
; I
1
; I
L1
d; I
L2
d; I
L3
d; I
1
d;
U
L1-E
; U
L2-E
; U
L3-E
; U
1
;
U
L1-L2
; U
L2-L3
; U
L3-L1
;3U
0
;
P Forw; P Rev; Q Forw; Q Rev; S; Pd; Qd; Sd;
cos Ï• Pos; cos Ï• Neg; f
In primary values
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