Initiation Of Reclosing From Cb Open Information - ABB REL650 series Technical Manual

1MRK 506 335-UUS A
11.3.6.11
Technical manual
CLOSECB
52a CBClosed
PICKUP
ANSI10000254 V1 EN
Figure 183: Automatic proceeding of shot 2 to 5

Initiation of reclosing from CB open information

If a user wants to apply initiation of auto-reclosing from CB open position instead of from
protection trip signals, the function offers such a possibility. This starting mode is selected
by a setting parameter StartByCBOpen = Enabled. One needs then to block reclosing at all
manual trip operations. Typically, one also set CBAuxContType = NormClosed and
connect a CB auxiliary contact of type NC (normally closed) to inputs 52a and RI. When
the signal changes from CB closed to CB open an auto-reclosing start pulse of limited
length is generated and latched in the function, subject to the usual checks. Then the
reclosing sequence continues as usual. One needs to connect signals from manual tripping
and other functions, which shall prevent reclosing, to the input INHIBIT.
0-tAutoContWait
0
S Q
AND
R
AND
OR
Section 11
Control
AND
initiate
OR
ANSI10000254-1-en.vsd
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