Subaru impreza 2017 - Page 161

Function Range or value Accuracy
Time delay for re-trip at 0 to 2 x I
set
(0.000-60.000) s ±0.2% or ±15 ms
whichever is greater
Time delay for back-up trip at 0 to 2 x I
set
(0.000-60.000) s ±0.2% or ±15 ms
whichever is greater
Time delay for back-up trip at multi-phase start at
0 to 2 x I
set
(0.000-60.000) s ±0.2% or ±20 ms
whichever is greater
Additional time delay for a second back-up trip at
0 to 2 x I
set
(0.000-60.000) s ±0.2% or ±20 ms
whichever is greater
Time delay for alarm for faulty circuit breaker (0.000-60.000) s ±0.2% or ±15 ms
whichever is greater
6.8 Stub protection STBPTOC
IP14515-1 v3
6.8.1 Identification
M17108-1 v2
Function description IEC 61850
identification
IEC 60617
identification
ANSI/IEEE C37.2
device number
Stub protection STBPTOC
3I>STUB
SYMBOL-T V1 EN-US
50STB
6.8.2 Functionality
M12902-3 v10
When a power line is taken out of service for maintenance and the line
disconnector is opened in multi-breaker arrangements the voltage transformers will
mostly be outside on the disconnected part. The primary line distance protection
will thus not be able to operate and must be blocked.
The stub protection (STBPTOC) covers the zone between the current transformers
and the open disconnector. The three-phase instantaneous overcurrent function is
released from a normally open, NO (b) auxiliary contact on the line disconnector.
6.8.3 Function block
M12524-3 v5
IEC05000678-2-en.vsd
STBPTOC
I3P*
BLOCK
BLKTR
RELEASE
TRIP
START
IEC05000678 V2 EN-US
Figure 60: STBPTOC function block
1MRK 505 384-UEN A Section 6
Current protection
Breaker protection REQ650 2.2 IEC 155
Technical manual