Verifying The Auto Recloser; Checking The Auto Reclosing Conditions - ABB Relion 670 Series Commissioning Manual

Section 11
Testing functionality by secondary injection
The circuit breaker should be closed and ready.
3. If external control inputs OFF/ON are used, check that they work. Set
and use the control inputs to switch On and Off, and check the state of the function.
11.9.2.3

Verifying the auto recloser

Select the test cases to be run according to what is applicable to the particular application. It
can be, for example,
• three-phase single-shot auto reclosing
• two-shot reclosing
• single-phase and three-phase single-shot auto reclosing
Below, a case with single-phase and three-phase single-shot auto reclosing is described.
1. Set
2. If the synchrocheck SESRSYN is not to be operated, ensure that the signal SYNC input is
activated. If SESRSYN is to be included, ensure that it is supplied with the appropriate AC
quantities.
3. Simulate CB closed position by closing switch SC to make the BR relay start.
4. Simulate CBREADY by closing the switch SRY, and leave it closed.
5. Inject AC quantities to give a trip, for example, a one-phase trip, to the BR and to the
START input of the auto recloser.
Observe and preferably record the operation. The BR relay shall trip and reclose (start).
After reclosing, the SRY switch can be opened for about 5s and then closed again.
The auto reclosing open time and the sequence should be checked, for example in the
event recording. Check also the operation indications (disturbance report) and the
operation counters on the local HMI under Main menu/Test/Function status/Control/
AutoRecloser79,5(0–>1)/SMBRREC(79,5(0–>)):x
Should the operation not be as expected, this should be investigated. It could be caused
by an inappropriate setting or missing condition such as
6. Repeat the sequence by simulating a permanent fault.
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 reclaim time.
Before a new reclosing sequence can be run, the
manually.
7. Repeat the sequence by simulating a three-phase transient and permanent faults, and
other applicable cases, such as signal to
If just single-phase reclosing is selected,
that a three-phase trip does not result in any auto reclosing. Other similar cases can be
checked as required.
11.9.2.4

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
152
Operation = On .
© Copyright 2017 ABB. All rights reserved
CBREADY .
CBREADY and CBCLOSED must be set
STARTHS and high-speed reclosing.
ARMode = 1ph , a check can be run to make sure
1MRK 511 403-UEN E
ExternalCtrl = On
M12400-91 v12
M12400-123 v5
M12400-129 v5
Bay control REC670
Commissioning manual