Hitachi Relion 670 Series Commissioning Manual page 219

1MRK506371-UUS Rev. M
Possibly reset the counters to Zero. Counters are reset in the reset menu.
4. Make arrangements for the simulation of the CB, for example as in Figure 54.
5. Make arrangements for indication, recording and time measurements.
The signals for ,52a, RI, CLOSECMD, READY and other relevant signals should preferably be
arranged for event recording with time tagging. If that is not possible, other means of time
measurement and recording should be arranged.
11.10.2.2 Switching the auto recloser to On and Off Enabled and Disabled
1. Set the Operation setting to Disabled and check the state.
2. Set the Operation setting to Enabled and check the state, including SETON and READY.
The circuit breaker should be closed and ready.
3. If external control inputs OFF/ON are used, check that they work. Set ExternalCtrl = Enabled and
use the control inputs to switch On and Off, and check the state of the function.
11.10.2.3 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-pole single-shot auto reclosing
• two-shot reclosing
• single-pole and three-pole single-shot auto reclosing
Below, a case with single-phase and three-pole single-shot auto reclosing is described.
1. Set Operation = Enabled.
2. If the synchrocheck SESRSYN (25) is not to be operated, ensure that the signal SYNC input is
activated. If SESRSYN (25) 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 pick-up.
4. Simulate CBREADY by closing the switch SRY, and leave it closed.
5. Inject AC quantities to give a trip, for example, a one-pole trip, to the BR and to the RI input of the
auto recloser.
Observe and preferably record the operation. The BR relay shall trip and reclose (pick-up). 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 CBREADY.
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
reset time.
Before a new reclosing sequence can be run, the CBREADY and 52a must be set manually.
7. Repeat the sequence by simulating a three-pole transient and permanent faults, and other
applicable cases, such as signal to RI_HS and high-speed reclosing.
If just single-pole reclosing is selected, ARMode = 1ph, a check can be run to make sure that a
three-pole trip does not result in any auto reclosing. Other similar cases can be checked as
required.
Line distance protection REL670
Commissioning manual
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Section 11
Testing functionality by secondary injection
M12400-91 v12
M12400-79 v9
213