ABB RELION REX640 Technical Manual page 1530

Section 9
Control functions
1524
issues a CLOSE_CB command. When the wait close time elapses, that is, the closing
of the circuit breaker fails, the next shot is automatically started. Another example is
the embedded generation on the power line, which can make the synchronism check
fail and prevent the reclosing. If the auto-reclose sequence is continued to the second
shot, a successful synchronous reclosing is more likely than with the first shot, since
the second shot lasts longer than the first one.
GUID-1ADB3733-2C48-4C13-9875-838AE98969CC V1 EN
Figure 802: Logic diagram of auto-initiation sequence detection
Automatic initiation can be selected with the Auto initiation Cnd setting to be the
following:
1MRS759142 C
REX640
Technical Manual