Function Block - ABB REL 501-C1 2.5 Technical Reference Manual

2.3
Definite time non-directional overcurrent
protection (TOC)

Function block

TOC--
TOC
BLOCK TRIP
BLKTR TRP
TRN
STP
STL1
STL2
STL3
STN
xx00000197.vsd
Figure 54: TOC function block, phase + N
TOC--
TOC
BLOCK TRIP
BLKTR TRP
STP
STL1
STL2
STL3
xx00000681.vsd
Figure 55: TOC function block, phase
TOC--
TOC
BLOCK TRIP
BLKTR TRN
STN
xx00000709.vsd
Figure 56: TOC function block, N
Chapter 5
Current
109