Dead Time Start Enable Logic Diagram; Figure 168: Dead Time Start Enable Logic Diagram (Module 22) - GE MiCOM P40 Technical Manual

Chapter 11 - Autoreclose
If DT Start by Prot is disabled, the circuit breaker must be open for the dead time to start. For three-phase tripping
applications, there is an option to check that the line is dead (3PDTStart WhenLD) before starting the dead time. To
check that the line is dead, set 3PDTStart WhenLD to enabled. To check that the circuit breaker is open, set
DTStart by CB Op to Enabled.
5.12.1

DEAD TIME START ENABLE LOGIC DIAGRAM

DT Start by Prot
Disable
Protection Reset
Protection Op
AR Start
OKTimeSP
OK Time 3P
ARIP
CB1 AR Init
CB2 AR Init
Dead Line
3 PDTStart WhenLD
Enabled
Disabled
DT Start by Prot
Protection Reset
Disable
CB1 AR 1p InProg
CB2 AR 1p InProg
DTStart by CB Op
Disabled
Enabled
CB1OP1 P
CB2OPAny
CB1 Open 3 ph
CB2 Open 3 ph
CB2OP1P
CB1OPAny
CB2 Open 3 ph
CB1 Open 3 ph
Num CBs
CB1 Only
CB2 Only
V03338

Figure 168: Dead time Start Enable logic diagram (Module 22)

308
1
&
&
S
Q
1
R
0
1
0.02
&
1
&
&
&
1
1
1
1
1
&
&
S
Q
R
1
1
1
&
1
&
1
&
1
&
DTOK All
Dead Line Time
t
DeadLineLockout
0
DTOK CB1L 1P
DTOK CB1L 3P
DTOK CB2L 1P
DTOK CB2L 3P
P446SV-TM-EN-1
P446SV