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One also has to configure and connect signals from manual trip commands to input
INHIBIT.
The logic for switching the auto-recloser
Enabled/Disabled
and the starting of the
reclosing is shown in figure
. The following should be considered:
•
Setting
Operation
can be set to
Disabled
,
External ctrl
or
Enabled
.
External ctrl
offers the possibility of switching by external switches to inputs ON and OFF,
communication commands to the same inputs, and so on.
•
SMBRREC (79) is normally started by tripping. It is either a Zone 1 and
Communication aided trip or a general trip. If the general trip is used the function
must be blocked from all back-up tripping connected to INHIBIT. In both alternatives
the breaker failure function must be connected to inhibit the function. RI makes a first
attempt with synchronism-check. TRSOTF starts shots 2-5.
•
Circuit breaker checks that the breaker was closed for a certain length of time before
the starting occurred and that the CB has sufficient stored energy to perform an auto-
reclosing sequence and is connected to inputs 52a and CBREADY.
Operation:Enabled
Operation:Disabled
Operation:External Ctrl
AND
AND
AND S
R
AND
AND
AND
SETON
initiate
pickup
READY
52a
CBREADY
TRSOTF
RI
OFF
ON
Additional conditions
ANSI08000017-2-en.vsd
autoInitiate
CB Closed
AND S
Blocking conditions
Inhibit condistions
count 0
AND
OR
OR
OR
R
OR
AND
120 ms
0
0
0-tCBClosedMin
ANSI08000017 V2 EN
Figure 103:
Auto-reclosing Disabled/Enabled and start
Section 10
1MRK 511 287-UUS A
Control
242
Technical manual
Содержание REC650 ANSI
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