10.5.7.3
Verifying the re-trip mode
M12104-36 v6
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
M12104-107 v7
1.
Set
RetripMode
=
Retrip Off
.
2.
Apply the fault condition, including the START of CCRWRBRF, well above
the set current value.
3.
Verify that no re-trip, but back-up trip is achieved after set time delay of
t2
.
Checking the re-trip with current check
M12104-48 v7
1.
Set
RetripMode
=
CB Pos Check
.
2.
Apply the fault condition, including the START of CCRWRBRF, 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 the START of CCRWRBRF, with the
current below the set current value
IP>
.
5.
Verify that no re-trip and no back-up trip are obtained.
Checking re-trip without current check
M12104-58 v9
1.
Set
RetripMode
=
No CBPos Check
.
2.
Apply the fault condition, including the START of CCRWRBRF, well above
the set current value.
3.
Verify that re-trip is achieved after the set time
t1
, and the back-up trip after
time
t2
.
4.
Apply the fault condition, including the START of CCRWRBRF, with the
current below the set current value
IP>
.
5.
Verify that re-trip is achieved after set time
t1
, but no back-up trip is obtained.
10.5.7.4
Verifying the back-up trip
M12104-146 v5
In the case below, it is assumed that
FunctionMode
=
Current
is selected.
Checking that back-up tripping is not achieved at normal CB tripping
M12104-150 v8
Use the actual tripping modes. The case below applies to re-trip with current check.
1.
Apply the fault condition, including the START of CCRWRBRF, with the
phase current well above the set value
IP>
.
2.
Interrupt the current, with a margin before back-up trip time,
t2
. It may be
made at issue of re-trip command.
3.
Check that re-trip is achieved, if selected, but no back-up trip is obtained.
Section 10
1MRK 506 377-UEN C
Testing functionality by secondary injection
116
Railway application RER670 2.2 IEC
Commissioning manual
Summary of Contents for RELION RER670
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