Siemens SIPROTEC 7SJ62 Instruction Manual page 309

Table 6-7 Operating Measured Values
Measured Values
I , I , I
a b c
I
G
3I
0
I , I Positive and Negative Sequence
1 2
Components of Current
I Sensitive Ground Current
Ns
V , V , V Phase-to-Phase Voltages
ab bc ca
V , V , V Phase-to-Ground Voltages
ag bg cg
V
gn
3V
0
V , V Positive and Negative Sequence
1 2
Components of Voltage
S, P, Q Complex, Real, Reactive Power MVA, MW,
Cos ϕ
f
per address  (see Subsection 6.1.3)
1
)
per address  (see Subsection 6.1.3)
2
)
7SJ62 Manual
C53000-G1140-C121-1
The displacement voltage is either measured directly or calculated from the phase-to-
ground voltages:
V = 3V /(V / V )
gn ph gnTRA
0
The ground current I is either measured directly or calculated from the conductor cur-
G
rents:
I = 3⋅I / (I /I )
G 0 G phTRA
Phase Currents
Ground Current
Ground Current
Displacement Voltage
Displacement Voltage
Power Factor
Frequency
In addition, the following may be available:
− Minimum and maximum values for the three phase currents I
ground voltages V ; the three phase-to-phase voltages V
xg
components I and V
1 1
the frequency; and the power factor cos ϕ; primary values. Included are the date
and time they were last updated.
with:
3V = (V + V + V
a b c
0
V /V = Transformation adjustment for ground
ph gnTRA
input voltage (setting )
with:
3I = (I + I + I )
a b c
0
I /I = Transformation adjustment for ground input
G phTRA
current (setting )
Primary Secondary
A A
A A
A A
A A
A mA
kV V
kV V
kV V
kV V
kV V
VA, W,
MVAR VAR
(abs) --
Hz --
; the real power P, reactive power Q, and apparent power S;
)
% of
Nominal Operating Current
Nominal Operating Current
Nominal Operating Current
Nominal Operating Current
-----
Nominal Operating Voltage
Nominal Operating Voltage/√3
Nominal Operating Voltage
Nominal Operating Voltage⋅√3
Nominal Operating Voltage/√3
√3 ⋅V ⋅I
Nominal Operating
N N
1 2
Quantities
)
-----
-----
; the three phase-to-
x
; the positive sequence
xy
Functions
1
)
1
)
1
)
1
)
2
)
2
)
2
)
2
)
2
)
)
6-169