ABB Relion REQ650, Руководство по применению

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auto-reclosing start pulse 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.
10.2.2.4 Blocking of the autorecloser
Auto-Reclose attempts are expected to take place only in the event of transient faults
on the own line. The Auto-Recloser must be blocked for the following conditions:
• Tripping from Delayed Distance protection zones
• Tripping from Back-up protection functions
• Tripping from Breaker failure function
• Intertrip received from remote end Breaker failure function
• Busbar protection tripping
Depending of the starting principle (General Trip or only Instantaneous trip) adopted
above the delayed and back-up zones might not be required. Breaker failure local and
remote must however always be connected.
10.2.2.5 Control of the auto-reclosing open time
There are settings for the three-phase auto-reclosing open time, t1 3Ph to t5 3Ph .
10.2.2.6 Long trip signal
In normal circumstances the trip command resets quickly because of fault clearance.
The user can set a maximum trip pulse duration
tTrip . A long trip signal interrupts the
reclosing sequence in the same way as a signal to input INHIBIT.
10.2.2.7 Maximum number of reclosing shots
The maximum number of reclosing shots in an auto-reclosing cycle is selected by the
setting parameter
NoOfShots .
10.2.2.8 3-phase reclosing, one to five shots according to setting NoOfShots.
A trip operation is made as a three-phase trip at all types of fault. The reclosing is as
a three-phase. 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. The timer for 3-phase auto-reclosing open time is started.
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.
1MRK 505 291-UEN A
Section 10
Control
201
Application manual