Verifying The Re-Trip Mode; Verifying The Back-Up Trip Mode - ABB Relion 650 Series Commissioning Manual

1MRK 511 209-UEN -
5.3.7.4
5.3.7.5
REC650
Commissioning Manual
3. Disconnect AC and start input signals.

Verifying the re-trip mode

Choose the mode below, which corresponds to the actual case.
In the cases below it is assumed that FunctionMode=Current as set under Main
menu/Settings/IED Settings/CCRBRF(50BF)/1:CCRBRF.
Checking the case without re-trip,
Procedure:
1. Set RetripMode = Retrip Off.
2. Apply the fault condition, including start of CCRBRF, well above the set
current value.
3. Verify that no re-trip, but back-up trip is achieved after set time.
4. Disconnect AC and start input signals.
Checking the re-trip with current check,
Procedure
1. Set RetripMode = CB Pos Check check.
2. Apply the fault condition, including start CCRBRF, well above the set current
value.
3. Verify that retrip is achieved after set time t1 and back-up trip after time t2
4. Apply the fault condition, including start of CCRBRF, with current below set
current value.
5. Verify that no re-trip, and no back-up trip is obtained.
6. Disconnect AC and start input signals.
Checking re-trip without current check,
Procedure:
1. Set RetripMode = No CBPos Check.
2. Apply the fault condition, including start of CCRBRF, well above the set
current value.
3. Verify that re-trip is achieved after set time t1, and back-up trip after time t2.
4. Apply the fault condition, including start of CCRBRF, with current below set
current value.
5. Verify that re-trip is achieved after set time t1, but no back-up trip is obtained.
6. Disconnect AC and start input signals.

Verifying the back-up trip mode

In the cases below it is assumed that FunctionMode = Current is selected.
Testing functionality
RetripMode = Retrip Off
RetripMode = CB Pos Check
RetripMode = No CBPos Check
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