Functions
2.12 Auxiliary Functions
SIPROTEC, 7RW80, Manual
C53000-G1140-C233-1, Release date 10.2010
119
2.12.3.1 Displaying of Measured Values
Table 2-10
Conversion formulae between secondary, primary and percentage values
Table 2-11
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 calculation of the operational measured values is also performed during a fault. The values are updated in
intervals of > 0.3 s and < 1 s.
Measured
Values
Second-
ary
Primary
%
V
A
, V
B
, V
C
,
V
0
, V
1
, V
2
,
V
syn
V
Ph-N sec.
V
A–B
, V
B–C
, V
C–A
V
Ph-Ph sec.
V
en
V
N sec.
V
x
V
x sec.
Frequenz
f in Hz
f in Hz
Parameter
Adress
Vnom PRIMARY
202
Vnom SECONDARY
203
Vph / Vdelta
206
FullScaleVolt. 1101
