Set Points For Measured Values; Setting Notes; Set Points For Statistic; Functional Description - Siemens SIPROTEC 4 Manual

No. Information
869 Vb-cMax=
870 Vc-aMin=
871 Vc-aMax=
872 Vn Min =
873 Vn Max =
874 V1 Min =
875 V1 Max =
882 fmin=
883 fmax=

Set Points for Measured Values

2.12.5
SIPROTEC devices facilitate the setting of limit values for some measured and metered values. If any of these
limit values is reached, exceeded or fallen below during operation, the device issues an alarm which is indi-
cated in the form of an operational message. This can be allocated to LEDs and/or binary outputs, transferred
via the interfaces and linked in DIGSI CFC. The limit values can be configured via DIGSI CFC and allocated via
the DIGSI device matrix.
Applications
•
This monitoring program works with multiple measurement repetitions and a lower priority than the
protection functions. Therefore, it may not pick up if measured values are changed spontaneously in the
event of a fault, before a pickup or tripping of the protection function occurs. This monitoring program is
therefore absolutely unsuitable for blocking protection functions.
2.12.5.1

Setting Notes

Setpoints for Measured Values
Setting is performed in the DIGSI configuration Matrix under Settings, Masking I/O (Configuration Matrix).
Apply the filter "Measured and Metered Values Only" and select the configuration group "Set Points (MV)".
Here you can insert new limit values via the Information Catalog which are subsequently linked to the meas-
ured value to be monitored using CFC.
This view also allows you to change the default settings of the limit values under Properties.
The settings for limit values must be in percent and usually refer to nominal values of the device.
For more details, see the SIPROTEC 4 System Description and the DIGSI CFC Manual.

Set Points for Statistic

2.12.6
2.12.6.1

Functional Description

For the statistical counters, setpoints may be entered and a message is generated as soon as they are reached.
The message can be allocated to both output relays and LEDs.
2.12.6.2 Setting Notes
Setpoints for the Statistical Counter
The setting of threshold values for the statistical counters takes place in DIGSI under Messages → Statistics in
the sub-menu Threshold Values for Statistics. Double-click to display the corresponding contents in another
window. By overwriting the previous value the settings can be changed (please refer to the SIPROTEC 4
System Description).
SIPROTEC 4, 7RW80, Manual
C53000-G1140-C233-4, Edition 07.2018
Type of Comments
Informa-
tion
MVT Vb-c Max
MVT Vc-a Min
MVT Vc-a Max
MVT V neutral Min
MVT V neutral Max
MVT V1 (positive sequence) Voltage Minimum
MVT V1 (positive sequence) Voltage Maximum
MVT Frequency Minimum
MVT Frequency Maximum
Functions
2.12 Auxiliary Functions
109