ABB REL650 series Technical Manual page 378

Section 11
Control
372
pulse
initiate
3PT1
3PT2
3PT3
3PT4
3PT5
RSTCOUNT
ANSI08000245 V1 EN
Figure 173: Pulsing of closing command and driving the operation counters
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.
Permanent fault and reclosing unsuccessful signal
If a new trip occurs after the CB closing command, and a new input signal RI or TRSOTF
appears, the output UNSUCCL (unsuccessful closing) is set high. The timers for the first
shot can no longer be started. Depending on the setting for the number of reclosing shots,
further shots may be made or the reclosing sequence will be ended. After the reset time has
elapsed, the auto-reclosing function resets but the CB remains open. The CB closed data
at the 52a input will be missing. Because of this, the reclosing function will not be ready
for a new reclosing cycle.
Normally the signal UNSUCCL appears when a new trip and initiate is received after the
last reclosing shot has been made and the auto-reclosing function is blocked. The signal
resets once the reset time has elapsed. The "unsuccessful" signal can also be made to
depend on CB position input. The parameter UnsucClByCBChk should then be set to
CBCheck, and a timer tUnsucCl should also be set. If the CB does not respond to the
closing command and does not close, but remains open, the output UNSUCCL is set high
after time tUnsucCl.
AND
AND
AND
AND
AND
AND
1MRK 506 335-UUS A
CLOSECMD
COUNT3P1
counter
COUNT3P2
counter
COUNT3P3
counter
COUNT3P4
counter
COUNT3P5
counter
COUNTAR
counter
ANSI08000245-1-en.vsd
Technical manual