ABB Relion 670 Series Commissioning Manual page 178

Section 11
Testing functionality by secondary injection
1. Repeat the check of back-up trip time. Disconnect current and input signals.
2. Activate the input 52FAIL. The output CBALARM (CB faulty alarm) should appear after set
time
3. Apply the fault condition, including initiation of CCRBRF (50BF), with current above set
current value.
4. Verify that back-up trip is obtained without intentional delay, for example within 20ms from
application of initiation.
5. Disconnect injected AC and BFI_3P input signals.
11.5.8.7 Verifying the case
It is assumed that re-trip without current check is selected,
1. Set
2. Apply input signal for CB closed to relevant input or inputs 52A_A, 52A_B or 52A_C.
3. Apply the input signal, or signals for the start of CCRBRF.
4. Verify that phase selection re-trip and backup trip are achieved after set times.
5. Disconnect the start signal(s). Keep the CB closed signal(s).
6. Apply input signal(s), for start of CCRBRF.
7. Arrange disconnection of CB closed signal(s) well before set backup trip time
8. Verify that backup trip is not achieved.
11.5.8.8 Verifying the case
It is assumed that re-trip without current check is selected,
1. Set
2. Apply input signal for CB closed to relevant input or inputs 52a_A (B or C).
3. Apply input signal, or signals for initiation of CCRBRF (50BF).
4. Verify that phase selection re-trip and back-up trip are achieved after set times.
5. Disconnect the trip signal(s). Keep the CB closed signal(s).
6.
7. Apply input signal(s), for initiation of CCRBRF (50BF).
8. Arrange disconnection of CB closed signal(s) well before set back-up trip time
9. Verify that back-up trip is not achieved.
10. Disconnect injected AC and BFI_3P input signals.
11.5.8.9 Verifying the case
To be made only when
tests in one phase only, or at three-pole trip applications for just three-pole tripping.
Checking the case with fault current above set value
The operation shall be as in
172
tCBAlarm . Keep the input activated.
FunctionMode = CB Pos
FunctionMode = CB Pos .
RetripMode = Contact
FunctionMode = Contact
FunctionMode = Current or CB Pos
FunctionMode = Current or CB Pos is selected. It is suggested to make the
RetripMode = UseFunctionMode .
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GUID-06D1545D-31F7-4B48-821E-151212962A81 v1
RetripMode = UseFunctionMode .
RetripMode = Contact .
Pickup_PH
Line distance protection REL670
Commissioning manual
1MRK 506 371-UUS E
t2
M12104-213 v10
t2 .
M12104-237 v7
M12104-241 v8