Verifying The Case Retripmode = Contact; Verifying The Function Mode Current&Contact - ABB REC650 Commissioning Manual

1MRK 511 248-UEN -
6.3.7.6
6.3.7.7
Commissioning Manual
RetripMode = Contact
Verifying the case
It is assumed that re-trip without current check is selected, RetripMode = Contact.
1. Set FunctionMode = Contact
2. Apply input signal for CB closed to input CBCLDL1 (2 or 3)CBCLD
3. Apply input signal, for start of CCRBRF. The value of current could be low.
4. Verify that phase-selection 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 CCRBRF. The value of current could be low.
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.
Verifying the function mode
To be made only when FunctionMode = Current&Contact is selected.
Checking the case with fault current above set value
The operation shall be as in FunctionMode = Current.
1. Set FunctionMode = Current&Contact.
2. Leave the inputs for CB close inactivated. These signals should not influence.
3. Apply the fault condition, including start of CCRBRF, with current above the
set IP> value.
4. Check that the re-trip, if selected, and back-up trip commands are achieved.
5. Disconnect injected AC and START input signals.
Checking the case with fault current below set value
The case shall simulate a case where the fault current is very low and operation
will depend on CB position signal from CB auxiliary contact. It is suggested that re-
trip without current check is used, setting RetripMode = No CBPos Check.
1. Set FunctionMode = Current&Contact.
2. Apply input signal for CB closed to relevant input or inputs CBCLDL1 (2 or 3)
3. Apply the fault condition with input signal(s) for start of CCRBRF. The value
of current should be below the set value I>BlkCont
4. Verify that phase-selection re-trip (if selected) and back-up trip are achieved
after set times. Failure to trip is simulated by keeping the signal(s) CB closed
activated.
5. Disconnect the AC and the START signal(s). Keep the CB closed signal(s).
6. Apply the fault and the start again. The value of current should be below the
set value I>BlkCont.
Testing functionality
Current&Contact
Section 6
IP>
I>BlkCont
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