ABB 615 series Technical Manual page 1004

Section 9
Control functions
998
Delayed DEL_INIT_2...4 signals are used only when the autoreclosing shot is
initiated with the pickup signal of a protection stage. After a pickup delay, the AR function
opens the circuit breaker and an autoreclosing shot is initiated. When the shot is initiated
with the trip signal of the protection, the protection function trips the circuit breaker and
simultaneously initiates the autoreclosing shot.
If the circuit breaker is manually closed against the fault, that is, if SOTF is used, the fourth
time delay can automatically be taken into use. This is controlled with the internal logic
of the AR function and the Fourth delay in SOTF parameter.
A typical autoreclose situation is where one autoreclosing shot has been performed after
the fault was detected. There are two types of such cases: operation initiated with
protection pickup signal and operation initiated with protection trip signal. In both cases,
the autoreclosing sequence is successful: the reclaim time elapses and no new sequence is
picked up.
A070867 V1 EN
Figure 507: Signal scheme of autoreclosing operation initiated with protection pickup
signal
The autoreclosing shot is initiated with a trip signal of the protection function after the
pickup delay time has elapsed. The autoreclosing picks up when the Str 2 delay shot 1
setting elapses.
1MAC059074-MB A
615 series ANSI
Technical Manual