Verifying The Re-Trip Mode; Verifying The Back-Up Trip Mode - ABB REG670 Commissioning Manual
Relion 670 series, generator protection
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- Technical manual (1298 pages) ,
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1MRK 502 073-UUS A
13.5.8.4
13.5.8.5
Generator protection REG670 2.2 ANSI and Injection equipment REX060, REX061, REX062
Commissioning manual
Verifying the re-trip mode
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,
1.
Set RetripMode = Retrip Off.
2.
Apply the fault condition, including initiation of CCRBRF (50BF), 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 BFI_3P input signals.
Checking the re-trip with current check,
1.
Set RetripMode = CB Pos Check.
2.
Apply the fault condition, including initiation of CCRBRF (50BF), 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 initiation of CCRBRF (50BF), with current
below set current value.
5.
Verify that no re-trip and no back-up trip are obtained.
6.
Disconnect AC and BFI_3P input signals.
Checking re-trip without current check
1.
Set RetripMode = No CBPos Check.
2.
Apply the fault condition, including initiation of CCRBRF (50BF), 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 initiation of CCRBRF (50BF), 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 BFI_3P input signals.
Verifying the back-up trip mode
In the cases below it is assumed that FunctionMode = Current is selected.
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.
Testing functionality by secondary injection
RetripMode = Retrip Off
RetripMode = CB Pos Check
Section 13
M12104-36 v6
M12104-107 v7
M12104-48 v7
M12104-58 v9
M12104-146 v5
M12104-150 v8
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