7.3.10.4
Verifying the
RetripMode
GUID-C52E8E13-1715-4817-A3FA-8BD49F024AC7 v2
1.
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/
Current/CSPRBRF(50BF)/CSPRBRF:1
2.
Continue with the cases shown below.
Checking the re-trip with current check,
RetripMode = CB Pos Check
GUID-D7E5610C-10B5-40CA-8AFB-34258DE8C038 v1
1.
Set
RetripMode = CB Pos Check check.
2.
Apply the fault condition, including start of CSPRBRF, 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 CSPRBRF, 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 the case without re-trip,
RetripMode = Retrip Off
GUID-BD45E346-023D-4776-BB32-2E877AABB1A9 v1
1.
Set RetripMode = Retrip Off.
2.
Apply the fault condition, including start of CSPRBRF , 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 re-trip without current check,
RetripMode = No CBPos Check
GUID-967E2665-DC4C-42CC-B95B-FAD53CE4BF66 v1
1.
Set
RetripMode = No CBPos Check.
2.
Apply the fault condition, including start of CSPRBRF, 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 CSPRBRF, 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.
7.3.10.5
Verifying the case
RetripMode = No CB Pos Check
GUID-BF81D7EB-6978-43FE-A03E-C4875C6EB57B v2
It is assumed that re-trip without current check is selected,
RetripMode = No CB Pos Check.
1.
Set
FunctionMode = Contact.
2.
Apply input signal for CB closed to input CBCLD.
3.
Apply input signal, for start of CSPRBRF.
4.
Verify that re-trip and back-up trip are achieved after set times.
5.
Disconnect the start signal. Keep the CB closed signal.
6.
Apply input signal, for start of CSPRBRF.
7.
Arrange disconnection of CB closed signal well before set back-up trip time
t2.
8.
Verify that back-up trip is not achieved.
9.
Disconnect injected AC and start input signals.
7.3.10.6
Verifying the function mode
Current&Contact
GUID-787A9556-3460-4AF6-920E-0E6C5504E78E v1
•
To be made only when
FunctionMode = Current&Contact is selected.
•
Checking the case with fault current above set value
IP>.
•
The operation shall be as in
FunctionMode = Current&Contact.
1MRK 505 293-UEN B
Section 7
Testing functionality
Breaker protection REQ650
59
Commissioning manual
© Copyright 2013 ABB. All rights reserved
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