Phase Reclosing, One To Five Shots According To Setting Noofshots - ABB REL650 Applications Manual

Section 11
Control
11.3.2.9
11.3.2.10
11.3.2.11
324

3-phase reclosing, one to five shots according to setting NoOfShots

1-phase or 3-phase reclosing first shot, followed by 3-phase reclosing shots, if selected.
Here, the auto-reclosing function is assumed to be "On" and "Ready". The breaker is
closed and the operation gear ready (operating energy stored). Input START is received
and sealed-in. The output READY is reset (set to false). Output ACTIVE is set.
• If TR3P is low (1-phase trip): The timer for 1-phase reclosing open time is started and
the output 1PT1 (1-phase reclosing in progress) is activated. It can be used to suppress
pole disagreement trip and ground-fault protection during the 1-phase open interval.
•
• If TR3P is high (3-phase trip): The timer for 3-phase auto-reclosing open time, t1 3Ph
or t1 3PhHS is started and output 3PT1 (3-phase auto-reclosing shot 1 in progress) is
set.
While any of the auto-reclosing open time timers are running, the output INPROGR is
activated. When the "open time" timer runs out, the respective internal signal is
transmitted to the output module for further checks and to issue a closing command to the
circuit breaker.
When a CB closing command is issued the output prepare 3-phase trip is set. When issuing
a CB closing command a resettimer tReset is started. If no tripping takes place during that
time the auto-reclosing function resets to the "Ready" state and the signal ACTIVE resets.
If the first reclosing shot fails, a 3-phase trip will be initiated and 3-phase reclosing can
follow, if selected.
FirstShot=1ph 1-phase reclosing in the first shot
The 1-phase reclosing attempt can be followed by 3-phase reclosing, if selected. If the first
trip is a 3-phase trip the auto-reclosing will be blocked. In the event of a 1-phase trip, the
operation is as in the example described above, program mode 1/3ph. If the first reclosing
shot fails, a 3-phase trip will be initiated and 3-phase reclosing can follow, if selected. A
maximum of four additional shots can be done (according to the NoOfShots parameter).
During 3-phase trip (TR2P low and TR3P high) the auto-reclosing will be blocked and no
reclosing takes place.
FirstShot=1ph + 1*3ph 1-phase or 3-phase reclosing in the first shot
At 1-phase trip, the operation is as described above. If the first reclosing shot fails, a 3-
phase trip will be issued and 3-phase reclosing will follow, if selected. At 3-phase trip, the
operation is similar to the above. But, if the first reclosing shot fails, a 3-phase trip
1MRK 506 334-UUS A
Application manual