Information to a Control Centre
If the device has a serial system interface, stored information may additionally be transferred via this interface
to a centralised control and storage device. Transmission is possible via different transmission protocols.
Measurement
A series of measured values and the values derived from them are constantly available for call up on site, or
for data transfer (see Table 2-8 and Table 2-9).
Functional Description
Display of Measured Values of the Voltage Inputs:
The operational measured values of the voltages at the 6 voltage inputs are displayed as secondary values.
Primary and percentage values are not displayed.
Table 2-8 Operational Measured Values
Measured
Values
secondary primary %
U
a
,
U
b
,
U
c
,
U
d,
U
e
,
U
f,
U
sec.
no primary values no percentage values
f
a
,
f
b
,
f
c
,
f
d
,
f
e
,
f
f
f in Hz — —
Synchronization Measured Values
The measured values derived from the synchronization function (see Table 2-9) can be read out in secondary,
primary or percentage values. Such measured values can only be displayed if a group has been selected. A
prerequisite for a correct display of primary and percentage values is the complete and correct input of the
nominal values of the transformers. Table 2-9 shows the formulas which form the basis for the conversion
from secondary values into primary values and percentages.
Table 2-9
Conversion formulae between secondary values and primary/percentage values of the
synchronizing function
Measured
values
secon-
dary
primary %
U1 U1
sek.
U2 U2
sek.
2.14.2
2.14.2.1
Functions
2.14 Auxiliary Functions
122 SIPROTEC 4, 7VE61 and 7VE63, Manual
C53000-G1176-C163-3, Edition 10.2017
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