Checking The Re-Trip And Back-Up Times; Verifying The Re-Trip Mode; Verifying The Back-Up Trip Mode - ABB RELION 650 Series Commissioning Manual

1MRK 506 366-UEN A
10.5.5.3

Checking the re-trip and back-up times

The check of the set times can be made in connection with the check of operate values above.
Choose the applicable function and trip mode, such as
RetripMode = CB Pos Check .
1. Apply the fault condition, including start of CCRBRF, well above the set current value.
Measure the time from START of CCRBRF.
2. Check the re-trip
In applicable cases, the back-up trip for multi-phase start
and
applied.
10.5.5.4

Verifying the re-trip mode

Choose the mode below, which corresponds to the actual case.
In the cases below it is assumed that
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.
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 the start of CCRBRF, with the current below the set
current value.
5. Verify that no re-trip, and no back-up trip is obtained.
Checking re-trip without 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 the 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
10.5.5.5

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. Interrupt the current, with a margin before back-up trip time,
of re-trip command.
3. Check that re-trip is achieved, if selected, but no back-up trip is obtained.
Commissioning manual
t1 and back-up trip times t2 and t3 .
t3 can also be checked. To check t2MPh , a two-phase or three-phase start shall be
RetripMode = Retrip Off .
RetripMode = CB Pos Check .
RetripMode = No CBPos Check .
IP> .
FunctionMode = Current and
FunctionMode = Current is selected.
RetripMode = Retrip Off
RetripMode = CB Pos Check
t1 and back-up trip after time t2
t1 , and the back-up trip after time t2 .
t1 , but no back-up trip is obtained.
FunctionMode = Current is selected.
Testing functionality by secondary injection
t2MPh and back-up trip 2, t2
t2 . It may be made at issue
Section 10
M12104-93 v10
M12104-36 v6
M12104-107 v6
M12104-48 v6
M12104-58 v8
M12104-146 v5
M12104-150 v7
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