Stub Protection Stbptoc; Identification; Application; Setting Guidelines - ABB REQ650 Applications Manual

Section 6
Current protection
6.11
6.11.1
6.11.2
6.11.3
140

Stub protection STBPTOC

Identification

Function description
Stub protection

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
IEC08000015 V1 EN
Figure 68: Typical connection for stub protection in 1½-breaker arrangement.

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.
IEC 61850 IEC 60617
identification identification
STBPTOC
3I>STUB
SYMBOL-T V1 EN
IED
en08000015.vsd
1MRK 505 291-UEN A
ANSI/IEEE C37.2
device number
50STB
Application manual