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

1MRK 505 264-UEN A
1. Apply the fault condition, including start of CCRBRF, well above the set current value.
Measure time from START of CCRBRF.
2. Check the re-trip
3. Disconnect AC and START input signals.
7.4.4.4

Verifying the re-trip mode

Choose the mode below, which corresponds to the actual case.
In the cases below it is assumed that
Settings/IED Settings/Current/CCRBRF(50BF)/1:CCRBRF.
Checking the case without re-trip,
1. Set
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,
1. Set
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
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,
1. Set
2. Apply the fault condition, including start of CCRBRF, without any current.
3. Verify that re-trip is achieved after set time
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
6. Disconnect AC and START input signals.
7.4.4.5

Verifying the back-up trip mode

In the cases below it is assumed that
Checking that back-up tripping is not achieved at normal CB tripping
Use the actual tripping modes. The case below applies to re-trip with current check.
1. Apply the fault condition, including start of CCRBRF, with phase current well above set
value
2. Arrange switching the current off, with a margin before back-up trip time,
made at issue of re-trip command.
3. Check that re-trip is achieved, if selected, but no back-up trip.
4. Disconnect AC and START input signals.
The normal mode
applicable cases the modes
which corresponds to the actual case.
Busbar protection REB650
Commissioning manual
t1 and back-up trip times t2 .
RetripMode = Retrip Off .
RetripMode = CB Pos Check .
RetripMode = No CBPos Check .
IP .
BuTripMode = 1 out of 3 should have been verified in the tests above. In
1 out of 4 and 2 out of 4 can be checked. Choose the mode below,
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FunctionMode = Current as set under Main menu/
RetripMode = Retrip Off
RetripMode = CB Pos Check
t1 and back-up trip after time t2
RetripMode = No CBPos Check
t1 , and back-up trip after time t2 .
t1 , but no back-up trip is obtained.
FunctionMode = Current is selected.
Section 7
Testing functionality
M12104-36 v5
M12104-107 v4
M12104-48 v4
M12104-58 v6
M12104-146 v4
M12104-150 v4
t2 . It may be
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