Transfer Of Measured Values; Information List - Siemens SIPROTEC 4 Manual

Please note that value V
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.
2.12.3.2

Transfer of Measured Values

Measured values can be transferred via the interfaces to a central control and storage unit.
The measuring range in which these values are transmitted depend on the protocol and, if necessary, addi-
tional settings.
Protocol
IEC 60870-5-103
IEC 61850
PROFIBUS, Modbus,
DNP 3.0
2.12.3.3

Information List

No. Information
621 Va =
622 Vb =
623 Vc =
624 Va-b=
625 Vb-c=
626 Vc-a=
627 VN =
629 V1 =
630 V2 =
632 Vsync =
644 Freq=
765 V/f =
766 V/f th=
832 Vo =
30800 VX =
30801 Vph-n =
SIPROTEC 4, 7RW80, Manual
C53000-G1140-C233-4, Edition 07.2018
is indicated in the operational measured values.
0
Transmittable measuring range, format
0 to 240 % of the measured value.
The primary operational measured values are transmitted.
The measured values as well as their unit format are set out in detail in manual PIXIT
7SJ.
The measured values are transmitted in "Float" format. The transmitted measuring
range is not limited and corresponds to the operational measurement.
The unit format of the measured values on the device side is at first automatically
generated by means of the selected nominal values of current and voltage within the
system data.
The current unit format can be determined in DIGSI or at the device via Menu Opera-
tional Values.
The user can select via DIGSI which operational measured values (primary, secondary
or percentage) must be transmitted.
The measured values are always transmitted as 16-bit values including sign (range
± 32768). The user can define the scaling of the operational measured value to be
transmitted. This will result in the respective transmittable measuring range.
For further details, please refer to the descriptions and protocol profiles.
Type of
Informa-
tion
MV
MV
MV
MV
MV
MV
MV
MV
MV
MV
MV
MV
MV
MV
MV
MV
Comments
Va
Vb
Vc
Va-b
Vb-c
Vc-a
VN
V1 (positive sequence)
V2 (negative sequence)
Vsync (synchronism)
Frequency
(V/Vn) / (f/fn)
Calculated temperature (V/f)
Vo (zero sequence)
Voltage VX
Voltage phase-neutral
Functions
2.12 Auxiliary Functions
107