ABB RELION Series, Technical Manual

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• The
SYNC
input must be TRUE if the particular CBB requires information about
the synchronism
• All AR initiation inputs that are defined protection lines (using the Control line
setting) are inactive
• The circuit breaker is open
• The circuit breaker is ready for the close command, that is, the
CB_READY
input
is TRUE. This is indicated by active
READY
output.
If at least one of the conditions is not fulfilled within the time set with the Auto wait
time parameter, the autoreclose sequence is locked.
The synchronism requirement for the CBBs can be defined with the Synchronisation
set setting, which is a bit mask. The lowest bit in the Synchronisation set setting is
related to CBB1 and the highest bit to CBB7. For example, if the setting is set to "1",
only CBB1 requires synchronism. If the setting is it set to "7", CBB1, CBB2 and
CBB3 require the
SYNC
input to be TRUE before the reclosing command can be
given.
A070873 V1 EN
Figure 336: Initiation during discrimination time - AR function goes to lockout
The discrimination time starts when the close command
CLOSE_CB
has been given.
If a start input is activated before the discrimination time has elapsed, the AR function
goes to lockout. The default value for each discrimination time is zero. The
discrimination time can be adjusted with the
Dsr time shot 1…4 parameter.
1MRS758755 A
Section 9
Control functions
REC615 and RER615 643
Technical Manual