1.
Apply the fault condition, including START of CCSRBRF, well above the set
current value. Measure time from “Start of CCSRBRF”.
2.
Check the re-trip
t1
and back-up trip times
t2
and
t3
3.
Disconnect AC and start input signals.
10.4.7.3
Verifying the re-trip mode
SEMOD128582-67 v2
Choose the mode below, which corresponds to the actual case. In the cases below it
is assumed that
FunctionMode
=
Current
is selected.
Checking the case without re-trip,
RetripMode = Retrip Off
SEMOD128582-71 v5
Procedure
1.
Set
RetripMode
=
Retrip Off
.
2.
Apply the fault condition, including START of CCSRBRF, 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,
RetripMode = CB Pos Check
SEMOD128582-83 v4
Procedure
1.
Set
RetripMode
=
CB Pos Check
.
2.
Apply the fault condition, including START of CCSRBRF, 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 CCSRBRF, 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,
RetripMode = No CBPos
Check
SEMOD128582-99 v5
Procedure
1.
Set
RetripMode
=
No CBPos Check
.
2.
Apply the fault condition, including START of CCSRBRF, 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 CCSRBRF, 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.
Section 10
1MRK 505 372-UEN A
Testing functionality by secondary injection
102
Busbar protection REB670 2.2 IEC
Commissioning manual
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