6.11 Stub protection STBPTOC
6.11.1 Identification
Function description
IEC 61850
identification
IEC 60617
identification
ANSI/IEEE C37.2
device number
Stub protection STBPTOC
SYMBOL-T V1 EN
50STB
6.11.2 Application
Stub protection STBPTOC is a simple phase overcurrent protection, fed from the two
current transformer groups feeding the object taken out of service. The stub protection
is only activated when the disconnector of the object is open. STBPTOCenables fast
fault clearance of faults at the section between the CTs and the open disconnector.
Open
Disconnector
IED
en08000015.vsd
IEC08000015 V1 EN
Figure 68: Typical connection for stub protection in 1½-breaker arrangement.
6.11.3 Setting guidelines
The parameters for Stub protection STBPTOC are set via the local HMI or PCM600.
The following settings can be done for the stub protection.
Section 6 1MRK 505 291-UEN A
Current protection
140
Application manual
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