ABB Relion 670 Series Technical Reference Manual page 646

Section 12
Control
ANSI05000785 V2 EN
Figure 318: Pulsing of closing command and driving the operation counters
640
Pulsing of the CB closing command
The CB closing command, CLOSECMD is a pulse with a duration set by parameter
tPulse. For circuit-breakers without anti-pumping function, the close pulse cutting
described below can be used. This is done by selecting the parameter
CutPulse=Enabled. In case of a new trip pulse, the closing command pulse is cut
(interrupted). The minimum duration of the pulse is always 50 ms. See figure
When a reclosing command is issued, the appropriate reclosing operation counter is
incremented. There is a counter for each type of reclosing and one for the total number
of reclosing commands issued.
tPulse
pulse
initiate **)
50 ms
1PT1
2PT1
3PT1
3PT2
3PT3
3PT4
3PT5
RSTCOUNT
**) Only if "CutPulse" = Enabled
Transient fault
After the reclosing command the reset timer tReset starts running for the set time. If no
tripping occurs within this time, the auto-reclosing will reset.
AND
OR
AND
counter
AND
counter
AND
counter
AND
counter
AND
counter
AND
counter
AND
counter
counter
1MRK505222-UUS C
318
CLOSECMD
COUNT1P
COUNT2P
COUNT3P1
COUNT3P2
COUNT3P3
COUNT3P4
COUNT3P5
COUNTAR
ANSI05000785_2_en.vsd
Technical reference manual