ABB Relion 670 Series Commissioning Manual page 224

Section 11
Testing functionality by secondary injection
Shortly after the reclosing shot, a new fault is applied. If a single-shot auto reclosing
program is selected, there shall be one reclosing operation and then blocking of the auto
recloser for the set reset time.
Before a new reclosing sequence can be run, the
7. Repeat the sequence by simulating a three-pole transient and permanent faults, and other
applicable cases, such as signal to
If just single-pole reclosing is selected,
three-pole trip does not result in any auto reclosing. Other similar cases can be checked as
required.
11.10.2.4 Checking the auto reclosing conditions
When checking the influence of a releasing condition it is suggested to first run an auto reclosing
sequence with the condition fulfilled. When the condition signal is removed, and a new sequence is
run, it indicates that the result was due to the changed condition. In case of a blocking signal the
procedure should be similar. Start without the blocking or inhibit signal, and then run a sequence
with the blocking or inhibit signal added.
Checking the influence of the INHIBIT signal
1. Check that the auto recloser is operative, for example, by making a reclosing shot without
the
2. Apply a fault and thereby a
to the input
3. Check that the auto reclosing sequence is interrupted and no auto reclosing takes place.
Check closing onto a fault
1. Check that the auto recloser is operative, for example by making a reclosing shot.
Keep the
2. Set the breaker simulating relay BR in Open position.
3. Close the BR relay and immediately apply a fault and thereby a RI signal.
4. Check that no auto reclosing takes place.
Checking the influence of circuit breaker not ready for reclosing
1. Check that the auto recloser function is operative, for example by making an auto reclosing
shot.
Keep the CB simulator BR closed. Remove the
2. Apply a fault and thereby a RI signal.
3. Check that no auto reclosing takes place.
Checking the influence of synchrocheck (at three-pole reclosing)
1. Check that the auto recloser is operative, for example, by making a three-pole reclosing shot
with the synchrocheck SESRSYN (25)conditions fullfilled.
Set the SESRSYN (25) function to
SYNC.
2. Apply a fault causing three-phase trip and thereby a
3. Wait for the
Check that no reclosing is made.
218
INHIBIT signal.
RI signal. At the same time, or during the dead time, apply a signal
INHIBIT .
CBREADY signal high.
tSync time-out limit.
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CBREADY and 52a must be set manually.
RI_HS and high-speed reclosing.
ARMode = 1ph , a check can be run to make sure that a
CBREADY signal by opening SRY.
Disabled to eliminate the signal connected to input signal
RI and a TR3P signal to the auto recloser.
1MRK 506 371-UUS E
M12400-123 v5
M12400-129 v5
M12400-137 v5
M12400-149 v5
M12400-161 v10
Line distance protection REL670
Commissioning manual