Sel 411L - Page 351

P.3.243
Date Code 20151029 Protection Manual SEL-411L Relay
Protection Functions
Trip Logic
Figure 3.156 Trip Logic Diagram (continued)
TPC
TPB
TPA
TRIP
3PT
SPT
A3PT
TRPRM
TDURD*
0
TDURD*
0
A3PT
TDURD*
0
A3PT
ATPA
ATPB
ATPC
ULTR
ULTRA
ULTRB
ULTRC
1
cyc
0
ATPA
1
cyc
0
ATPB
1
cyc
0
ATPC
RSTTRGT
A3PT
TDURD = TDUR1D if A3PT = 0
TDURD = TDUR3D if A3PT = 1
If A3PT evolves from 0 to 1 while TDUR1D is timing reload TDUR3D
* = Settings
Underline = SEL OGIC Setting