Siemens 7SK80 - Page 274

Functions
2.20 Auxiliary Functions
SIPROTEC, 7SK80, Manual
E50417-G1140-C344-A5, Release date 11.2012
274
Table 2-21 Legend for the conversion formulae
Depending on the type of device ordered and the device connections, some of the operational measured values
listed below may not be available. The phase–to–Ground voltages are either measured directly, if the voltage
inputs are connected phase–to–Ground, or they are calculated from the phase–to–phase voltages V
A–B
and
V
B–C
and the displacement voltage V
N
.
The displacement voltage V
N
is either measured directly or calculated from the phase-to-Ground voltages:
Please note that value V
0
is indicated in the operational measured values.
The ground current I
N
is either measured directly or calculated from the conductor currents.
V
x
V
x sec.
P, Q, S (P and Q
phase-segregat-
ed)
No secondary measured values
Power factor
(phase-segre-
gated)
cos ϕ cos ϕ cos ϕ · 100 in %
Frequency f in Hz f in Hz
Measured
values
second-
ary
primary %
Parameter Address Parameter Address
Vnom PRIMARY 202 Ignd-CT PRIM 217
Vnom SECONDARY 203 Ignd-CT SEC 218
CT PRIMARY 204 Ignd2-CT PRIM. 238
CT SECONDARY 205 Ignd2-CT SEC. 239
Vph / Vdelta 206 FullScaleVolt. 1101
VXnom PRIMARY 232 FullScaleCurr. 1102
VXnom SECONDARY 233