Functions
2.1 General
SIPROTEC, 7SD5, Manual
C53000-G1176-C169-5, Release date 02.2011
44
2.1.2 General Power System Data (Power System Data 1)
The device requires some plant and power system data in order to be able to adapt its functions accordingly,
depending on the actual application. The data required include for instance rated data of the substation and the
measuring transformers, polarity and connection of the measured quantities, if necessary features of the circuit
breakers, and others. Furthermore, there are several function parameters associated with several functions
rather than one specific protection, control or monitoring function. The Power System Data 1 can only be
changed from a PC running DIGSI and are discussed in this section.
2.1.2.1 Setting Notes
Polarity of the current transformers
In address 201 CT Starpoint, the polarity of the wye-connected current transformers is specified (the fol-
lowing figure also goes for only two current transformers). The setting determines the measuring direction of
the device (forward = line direction). A change in this setting also results in a polarity reversal of the earth
current inputs I
E
or I
EE
.
142 Therm.Overload Disabled
Enabled
Disabled Thermal Overload Protection
143 TRANSFORMER NO
YES
NO Transformer inside protection
zone
144 V-TRANSFORMER Not connected
connected
connected Voltage transformers
145 P. INTERFACE 1 Enabled
Disabled
IEEE C37.94
Enabled Protection Interface 1 (Port D)
146 P. INTERFACE 2 Disabled
Enabled
IEEE C37.94
Disabled Protection Interface 2 (Port E)
147 NUMBER OF RELAY 2 relays
3 relays
4 relays
5 relays
6 relays
2 relays Number of relays
148 GPS-SYNC. Enabled
Disabled
Disabled GPS synchronization
149 charge I comp. Enabled
Disabled
Disabled charging current compensation
160 L-sections FL 1 Section
2 Sections
3 Sections
1 Section Line sections for fault locator
Addr. Parameter Setting Options Default Setting Comments
To Next Page
Loading...
Need help?
General
