ABB RELION 620 Series Technical Manual page 724

Section 9
Control functions
718
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 363: 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.
A070868-ANSI V1 EN
Figure 364: Signal scheme of autoreclosing operation initiated with protection trip
signal
1MAC504801-IB E
620 series ANSI
Technical Manual