Verifying The Function Mode Curr&Cont Check; Completing The Test; Stub Protection Stbptoc - ABB RELION REG670 Commissioning Manual

1MRK 502 067-UEN B
12.5.10.7 Verifying the function mode
To be made only when
the tests in one phase only, or at three-phase trip applications for just three-phase tripping.
Checking the case with fault current above set value
The operation shall be as in
Set
RetripMode = CB Pos Check .
Procedure
1. Set
2. Leave the input for CB close inactivated. This signal should not influence. Leave the
inputs for CB close inactivated. These signals should not influence.
3. Apply the fault condition, including START of CCSRBRF, with current above the set
value.
4. Check that the re-trip, if selected, and back-up trip commands are achieved.
5. Disconnect injected AC and START input signals.
Checking the case with fault current below set value
The case shall simulate a case where the fault current is very low and operation will depend on
CB position signal from CB auxiliary contact. It is suggested that re-trip without current check
is used; setting
Procedure
1. Set
2. Apply input signal for CB closed to relevant input CBCLD.Apply input signal for CB closed
to relevant input or inputs CBCLD.
3. Apply the fault condition with input signal(s) for START of CCSRBRF. The value of current
should be below the set value
4. Verify that re-trip (if selected) and back-up trip are achieved after set times. Failure to
trip is simulated by keeping the signal CB closed activated.Failure to trip is simulated by
keeping the signals CB closed activated.
5. Disconnect the AC and the START signals. Keep the CB closed signal.Disconnect the AC
and the START signals. Keep the CB closed signals.
6. Apply the fault and the START again. The value of current should be below the set value
I>BlkCont
7. Arrange disconnection of BC closed signal well before set back-up trip time
disconnection of BC closed signals well before set back-up trip time
correct CB tripping.
8. Verify that back-up trip is not achieved. Re-trip can appear, for example, due to selection
RetripMode = No CBPos Check .
9. Disconnect injected AC and START input signals.
12.5.10.8

Completing the test

Continue to test another function or end the test by changing the
Restore connections and settings to their original values, if they were changed for testing
purposes.
12.5.11

Stub protection STBPTOC

Prepare the IED for verification of settings as outlined in section
section
Commissioning manual
FunctionMode = Current&Contact is selected. It is suggested to make
FunctionMode = Current .
FunctionMode = Current/Contact .
RetripMode = No CBPos Check .
FunctionMode = Current/Contact .
"Preparing for test" in this chapter.
Curr&Cont Check
I>BlkCont
Testing functionality by secondary injection
SEMOD128582-207 v3
SEMOD128582-211 v6
SEMOD128582-227 v6
t2 .Arrange
t2 . It simulates a
SEMOD128582-251 v3
TestMode setting to Off .
"Requirements" and
Section 12
IP>
M14922-2 v7
171