ABB REQ650 Commissioning Manual

6.3.10.5 Verifying the case RetripMode = No CB Pos Check
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 initiation of CSPRBRF (50BF).
4. Verify that re-trip and back-up trip are achieved after set times.
5. Disconnect the initiate signal. Keep the CB closed signal.
6. Apply input signal, for initiating of CSPRBRF (50BF).
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 initiate input signals.
6.3.10.6 Verifying the function mode Current&Contact
• To be made only when FunctionMode = Current&Contact is selected.
• Checking the case with fault current above set value Pickup_PH.
• The operation shall be as in FunctionMode = Current&Contact.
1. Set FunctionMode = Current&Contact.
2. Leave the inputs for CB close inactivated. These signals should not influence.
3. Apply the fault condition, including initiation of CSPRBRF (50BF), with current
above the set Pickup_PH value.
4. Check that the re-trip, if selected, and back-up trip commands are achieved.
5. Disconnect injected AC and initiate input signals.
6.3.10.7 Checking the case with fault current below set value
Pickup_BlkCont
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 retrip without
current check is used; setting RetripMode = No CBPos Check.
1. Set FunctionMode = Current & Contact check.
2. Apply input signal for CB closed to relevant input or inputs BFI_A, BFI_B, or
BFI_C
3. Apply the fault condition with input signal(s) for initiation of CSPRBRF (50BF).
The value of current should be below the set value Pickup_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 initiation signal(s). Keep the CB closed signal(s).
1MRK 505 293-UUS A Section 6
Testing functionality
67
Commissioning manual

ABB REQ650 Specifications

General

Brand	ABB
Model	REQ650
Category	Protection Device
Language	English