ABB REL650 series Technical Manual page 261

1MRK 506 335-UUS A
Technical manual
IA, IB, IC
Calculation
of final
temperature
ANSI09000637 V2 EN
Figure 114: Functional overview of LFPTTR/LCPTTR (26)
Current protection
Final Temp
> TripTemp
actual temperature
Calculation
of actual
temperature
Actual Temp >
AlarmTemp
Actual Temp
> TripTemp
Lock-
Actual Temp
< Recl Temp
Calculation
of time to
trip
Calculation
of time to
reset of
lockout
ANSI09000637-2-en.vsd
Section 7
PICKUP
ALARM
TRIP
LOCKOUT
out
logic
TTRIP
TENRECL
255